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Bugs fixed: - Bug #20877: InnoDB data dictionary memory footprint is too big - Bug #13544: Second delete of same row in transaction illustrates non-optimal locking - Bug #20791: valgrind errors in InnoDB storage/innobase/btr/btr0btr.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r823: Minor cleanup related to Bug #20877. btr_print_recursive(): Replace tree->tree_indexes with tree->index. This should have been done in r453. univ.i: Add UNIV_BTR_PRINT. rw_lock_t: Reduce writer_is_wait_ex to a bit and move it close to other bitfields. Change the types to unsigned, in case ulint or ibool bitfields will not work. Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/btr/btr0cur.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r816: Remove more remnants of mixed indexes. Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r830: page_align(ptr): New utility function to replace ut_align_down(ptr, UNIV_PAGE_SIZE) calls. Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/btr/btr0pcur.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r830: page_align(ptr): New utility function to replace ut_align_down(ptr, UNIV_PAGE_SIZE) calls. Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/btr/btr0sea.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r816: Remove more remnants of mixed indexes. Revision r824: Reduce the size of btr_search_t from 13 machine words to 7. This structure is reserved for every index in the data dictionary cache. (Bug #20877) We could shrink the structure further to three 32-bit words or two 64-bit words by turning the remaining fields to bit-fields. Unfortunately, the fields are not protected by any mutex, and thus we would better keep each field aligned to a machine word. btr_search_t, buf_block_t: Rename "ulint side" to "ibool left_side". Remove BTR_SEARCH_LEFT_SIDE and BTR_SEARCH_RIGHT_SIDE, and also rename some local variables and function parameters from "ulint side" to "ibool left_side". btr_search_t: Remove the unused fields last_search, n_direction, direction, and modify_clock. Remove the unused constants BTR_SEA_NO_DIRECTION, BTR_SEA_LEFT, BTR_SEA_RIGHT, and BTR_SEA_SAME_REC. btr_search_t: Remove magic_n unless #defined UNIV_DEBUG. Turn an assertion about the magic number into a debug assertion. Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/buf/buf0buf.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r824: Reduce the size of btr_search_t from 13 machine words to 7. This structure is reserved for every index in the data dictionary cache. (Bug #20877) We could shrink the structure further to three 32-bit words or two 64-bit words by turning the remaining fields to bit-fields. Unfortunately, the fields are not protected by any mutex, and thus we would better keep each field aligned to a machine word. btr_search_t, buf_block_t: Rename "ulint side" to "ibool left_side". Remove BTR_SEARCH_LEFT_SIDE and BTR_SEARCH_RIGHT_SIDE, and also rename some local variables and function parameters from "ulint side" to "ibool left_side". btr_search_t: Remove the unused fields last_search, n_direction, direction, and modify_clock. Remove the unused constants BTR_SEA_NO_DIRECTION, BTR_SEA_LEFT, BTR_SEA_RIGHT, and BTR_SEA_SAME_REC. btr_search_t: Remove magic_n unless #defined UNIV_DEBUG. Turn an assertion about the magic number into a debug assertion. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/buf/buf0flu.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/buf/buf0lru.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/buf/buf0rea.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/data/data0data.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/data/data0type.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r816: Remove more remnants of mixed indexes. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. storage/innobase/dict/dict0boot.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r816: Remove more remnants of mixed indexes. Revision r827: Make dict_index_find_cols() always succeed. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/dict/dict0crea.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r816: Remove more remnants of mixed indexes. Revision r827: Make dict_index_find_cols() always succeed. Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r833: Tweak the bit-field definitions introduced since r813 to address Bug #20877. rw_lock_t: Do not make writer_is_wait_ex a bit-field. There are no fields yet that could be fused to the same machine word, but we play it safe, because the field writer_is_wait_ex may be modified by several threads simultaneously. Such fields should always be allocated an own machine word. dict_table_t: Change the type of all bit-fields to "unsigned". Make "space" a bit-field of 32 bits. Move name_hash and id_hash after all bit-fields, so that the bit-fields can be allocated together. Do not make autoinc_inited a bit-field, as we cannot allocate any field from the same machine word. dict_build_table_def_step(): Pass a local variable to fil_create_new_single_table_tablespace() and initialize table->space from it after the call, now that table->space is a bit-field. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/dict/dict0dict.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r816: Remove more remnants of mixed indexes. Revision r818: Remove dict_col_t::hash, dict_col_t::table, dict_sys->col_hash, and DICT_POOL_PER_COL_HASH. (Bug #20877) The col->table pointer was only needed for maintaining a hash table of all defined columns in all tables. The hash table was only looked up in dict_index_find_cols(). Removing the col->hash and col->table pointers reduces the size of a table column by two machine words (usually 8 or 16 bytes). dict_col_add_to_cache(), dict_col_reposition_in_cache(), dict_col_remove_from_cache(): Remove. These only updated dict_sys->col_hash. dict_index_find_cols(): Use a linear search instead of the hash table. The time complexity is affected, but this function is only invoked by dict_index_add_to_cache(), and we only search the columns of a single table (typically at most a few dozen) as opposed to all columns of all tables. Revision r819: dict_col_t: Reduce ord_part to one bit. dict_index_add_to_cache(): Instead of incrementing ord_part, set it. dict_index_remove_from_cache(): Do not touch ord_part. dtype_t: Reduce mbminlen from 3 to 2 bits. row_upd(): Add a UNIV_LIKELY hint around node->in_mysql_interface. Revision r820: Remove dict_col_t::clust_pos. dict_col_get_clust_pos(): Add parameter clust_index. Replace the look-up with a linear search of all columns in the clustered index. row_upd_index_replace_new_col_vals(): Compute clust_index outside the loops. Compute clust_pos outside the inner loop. row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary(): Compute clust_index outside the loops. Declare the auxiliary variables inside the loop scope. Revision r821: dict_table_t: Rename the integer field max_row_size to the Boolean field big_rows. (Bug #20877) BIG_ROW_SIZE: Move the definition from row0sel.c to dict_table_add_to_cache(). Revision r826: The code base was reindented in r763 and automatic .emacs indentation settings introduced. Some problems were found, so from this commit on one additional indentation rule is introduced: (add-to-list 'c-offsets-alist '(arglist-intro . +)) Note that fixing some of the unfortunate line-splits done in r764 will be done in a future change. Revision r827: Make dict_index_find_cols() always succeed. Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r831: Add dict_col_get_clust_pos_noninline(), which was forgotten from r820. Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r836: Remove dict_col_t::name, replace it with a packed array of column names in dict_table_t. This saves 8-15+ bytes of memory per column on 64-bit machines. Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. Revision r845: Split long lines with [] operators better. storage/innobase/dict/dict0load.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/dict/dict0mem.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r818: Remove dict_col_t::hash, dict_col_t::table, dict_sys->col_hash, and DICT_POOL_PER_COL_HASH. (Bug #20877) The col->table pointer was only needed for maintaining a hash table of all defined columns in all tables. The hash table was only looked up in dict_index_find_cols(). Removing the col->hash and col->table pointers reduces the size of a table column by two machine words (usually 8 or 16 bytes). dict_col_add_to_cache(), dict_col_reposition_in_cache(), dict_col_remove_from_cache(): Remove. These only updated dict_sys->col_hash. dict_index_find_cols(): Use a linear search instead of the hash table. The time complexity is affected, but this function is only invoked by dict_index_add_to_cache(), and we only search the columns of a single table (typically at most a few dozen) as opposed to all columns of all tables. Revision r820: Remove dict_col_t::clust_pos. dict_col_get_clust_pos(): Add parameter clust_index. Replace the look-up with a linear search of all columns in the clustered index. row_upd_index_replace_new_col_vals(): Compute clust_index outside the loops. Compute clust_pos outside the inner loop. row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary(): Compute clust_index outside the loops. Declare the auxiliary variables inside the loop scope. Revision r821: dict_table_t: Rename the integer field max_row_size to the Boolean field big_rows. (Bug #20877) BIG_ROW_SIZE: Move the definition from row0sel.c to dict_table_add_to_cache(). Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r836: Remove dict_col_t::name, replace it with a packed array of column names in dict_table_t. This saves 8-15+ bytes of memory per column on 64-bit machines. storage/innobase/eval/eval0eval.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r826: The code base was reindented in r763 and automatic .emacs indentation settings introduced. Some problems were found, so from this commit on one additional indentation rule is introduced: (add-to-list 'c-offsets-alist '(arglist-intro . +)) Note that fixing some of the unfortunate line-splits done in r764 will be done in a future change. storage/innobase/eval/eval0proc.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/fil/fil0fil.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/fsp/fsp0fsp.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. Revision r845: Split long lines with [] operators better. storage/innobase/handler/ha_innodb.cc: Applied innodb-5.1 snapshots ss799 and ss854 storage/innobase/handler/ha_innodb.h: Applied innodb-5.1 snapshots ss799 and ss854 storage/innobase/ibuf/ibuf0ibuf.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/include/btr0btr.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". storage/innobase/include/btr0btr.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. storage/innobase/include/btr0cur.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". storage/innobase/include/btr0cur.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". storage/innobase/include/btr0pcur.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r817: btr0pcur.h: Change FIXME to TODO. storage/innobase/include/btr0sea.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r824: Reduce the size of btr_search_t from 13 machine words to 7. This structure is reserved for every index in the data dictionary cache. (Bug #20877) We could shrink the structure further to three 32-bit words or two 64-bit words by turning the remaining fields to bit-fields. Unfortunately, the fields are not protected by any mutex, and thus we would better keep each field aligned to a machine word. btr_search_t, buf_block_t: Rename "ulint side" to "ibool left_side". Remove BTR_SEARCH_LEFT_SIDE and BTR_SEARCH_RIGHT_SIDE, and also rename some local variables and function parameters from "ulint side" to "ibool left_side". btr_search_t: Remove the unused fields last_search, n_direction, direction, and modify_clock. Remove the unused constants BTR_SEA_NO_DIRECTION, BTR_SEA_LEFT, BTR_SEA_RIGHT, and BTR_SEA_SAME_REC. btr_search_t: Remove magic_n unless #defined UNIV_DEBUG. Turn an assertion about the magic number into a debug assertion. storage/innobase/include/buf0buf.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r824: Reduce the size of btr_search_t from 13 machine words to 7. This structure is reserved for every index in the data dictionary cache. (Bug #20877) We could shrink the structure further to three 32-bit words or two 64-bit words by turning the remaining fields to bit-fields. Unfortunately, the fields are not protected by any mutex, and thus we would better keep each field aligned to a machine word. btr_search_t, buf_block_t: Rename "ulint side" to "ibool left_side". Remove BTR_SEARCH_LEFT_SIDE and BTR_SEARCH_RIGHT_SIDE, and also rename some local variables and function parameters from "ulint side" to "ibool left_side". btr_search_t: Remove the unused fields last_search, n_direction, direction, and modify_clock. Remove the unused constants BTR_SEA_NO_DIRECTION, BTR_SEA_LEFT, BTR_SEA_RIGHT, and BTR_SEA_SAME_REC. btr_search_t: Remove magic_n unless #defined UNIV_DEBUG. Turn an assertion about the magic number into a debug assertion. storage/innobase/include/data0data.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. storage/innobase/include/data0type.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r816: Remove more remnants of mixed indexes. Revision r819: dict_col_t: Reduce ord_part to one bit. dict_index_add_to_cache(): Instead of incrementing ord_part, set it. dict_index_remove_from_cache(): Do not touch ord_part. dtype_t: Reduce mbminlen from 3 to 2 bits. row_upd(): Add a UNIV_LIKELY hint around node->in_mysql_interface. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. storage/innobase/include/data0type.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r816: Remove more remnants of mixed indexes. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/include/dict0boot.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r816: Remove more remnants of mixed indexes. storage/innobase/include/dict0dict.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r816: Remove more remnants of mixed indexes. Revision r818: Remove dict_col_t::hash, dict_col_t::table, dict_sys->col_hash, and DICT_POOL_PER_COL_HASH. (Bug #20877) The col->table pointer was only needed for maintaining a hash table of all defined columns in all tables. The hash table was only looked up in dict_index_find_cols(). Removing the col->hash and col->table pointers reduces the size of a table column by two machine words (usually 8 or 16 bytes). dict_col_add_to_cache(), dict_col_reposition_in_cache(), dict_col_remove_from_cache(): Remove. These only updated dict_sys->col_hash. dict_index_find_cols(): Use a linear search instead of the hash table. The time complexity is affected, but this function is only invoked by dict_index_add_to_cache(), and we only search the columns of a single table (typically at most a few dozen) as opposed to all columns of all tables. Revision r820: Remove dict_col_t::clust_pos. dict_col_get_clust_pos(): Add parameter clust_index. Replace the look-up with a linear search of all columns in the clustered index. row_upd_index_replace_new_col_vals(): Compute clust_index outside the loops. Compute clust_pos outside the inner loop. row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary(): Compute clust_index outside the loops. Declare the auxiliary variables inside the loop scope. Revision r827: Make dict_index_find_cols() always succeed. Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r831: Add dict_col_get_clust_pos_noninline(), which was forgotten from r820. Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r836: Remove dict_col_t::name, replace it with a packed array of column names in dict_table_t. This saves 8-15+ bytes of memory per column on 64-bit machines. storage/innobase/include/dict0dict.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r820: Remove dict_col_t::clust_pos. dict_col_get_clust_pos(): Add parameter clust_index. Replace the look-up with a linear search of all columns in the clustered index. row_upd_index_replace_new_col_vals(): Compute clust_index outside the loops. Compute clust_pos outside the inner loop. row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary(): Compute clust_index outside the loops. Declare the auxiliary variables inside the loop scope. Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. storage/innobase/include/dict0mem.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r815: dict_index_t: Remove tree_indexes. It should have been removed in r453 when the list in dict_tree_t was replaced with the pointer tree_index. Revision r818: Remove dict_col_t::hash, dict_col_t::table, dict_sys->col_hash, and DICT_POOL_PER_COL_HASH. (Bug #20877) The col->table pointer was only needed for maintaining a hash table of all defined columns in all tables. The hash table was only looked up in dict_index_find_cols(). Removing the col->hash and col->table pointers reduces the size of a table column by two machine words (usually 8 or 16 bytes). dict_col_add_to_cache(), dict_col_reposition_in_cache(), dict_col_remove_from_cache(): Remove. These only updated dict_sys->col_hash. dict_index_find_cols(): Use a linear search instead of the hash table. The time complexity is affected, but this function is only invoked by dict_index_add_to_cache(), and we only search the columns of a single table (typically at most a few dozen) as opposed to all columns of all tables. Revision r819: dict_col_t: Reduce ord_part to one bit. dict_index_add_to_cache(): Instead of incrementing ord_part, set it. dict_index_remove_from_cache(): Do not touch ord_part. dtype_t: Reduce mbminlen from 3 to 2 bits. row_upd(): Add a UNIV_LIKELY hint around node->in_mysql_interface. Revision r820: Remove dict_col_t::clust_pos. dict_col_get_clust_pos(): Add parameter clust_index. Replace the look-up with a linear search of all columns in the clustered index. row_upd_index_replace_new_col_vals(): Compute clust_index outside the loops. Compute clust_pos outside the inner loop. row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary(): Compute clust_index outside the loops. Declare the auxiliary variables inside the loop scope. Revision r821: dict_table_t: Rename the integer field max_row_size to the Boolean field big_rows. (Bug #20877) BIG_ROW_SIZE: Move the definition from row0sel.c to dict_table_add_to_cache(). Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r833: Tweak the bit-field definitions introduced since r813 to address Bug #20877. rw_lock_t: Do not make writer_is_wait_ex a bit-field. There are no fields yet that could be fused to the same machine word, but we play it safe, because the field writer_is_wait_ex may be modified by several threads simultaneously. Such fields should always be allocated an own machine word. dict_table_t: Change the type of all bit-fields to "unsigned". Make "space" a bit-field of 32 bits. Move name_hash and id_hash after all bit-fields, so that the bit-fields can be allocated together. Do not make autoinc_inited a bit-field, as we cannot allocate any field from the same machine word. dict_build_table_def_step(): Pass a local variable to fil_create_new_single_table_tablespace() and initialize table->space from it after the call, now that table->space is a bit-field. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r835: Change the recently introduced ulint bit-fields to unsigned. Revision r836: Remove dict_col_t::name, replace it with a packed array of column names in dict_table_t. This saves 8-15+ bytes of memory per column on 64-bit machines. storage/innobase/include/dict0types.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". storage/innobase/include/ibuf0ibuf.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/include/page0page.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r830: page_align(ptr): New utility function to replace ut_align_down(ptr, UNIV_PAGE_SIZE) calls. Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. storage/innobase/include/page0page.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r830: page_align(ptr): New utility function to replace ut_align_down(ptr, UNIV_PAGE_SIZE) calls. Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/include/read0read.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/include/rem0cmp.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. storage/innobase/include/rem0cmp.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. storage/innobase/include/rem0rec.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. storage/innobase/include/rem0rec.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/include/rem0types.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. storage/innobase/include/row0upd.ic: Applied innodb-5.1 snapshots ss799 and ss854 Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. storage/innobase/include/sync0rw.h: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r823: Minor cleanup related to Bug #20877. btr_print_recursive(): Replace tree->tree_indexes with tree->index. This should have been done in r453. univ.i: Add UNIV_BTR_PRINT. rw_lock_t: Reduce writer_is_wait_ex to a bit and move it close to other bitfields. Change the types to unsigned, in case ulint or ibool bitfields will not work. Revision r833: Tweak the bit-field definitions introduced since r813 to address Bug #20877. rw_lock_t: Do not make writer_is_wait_ex a bit-field. There are no fields yet that could be fused to the same machine word, but we play it safe, because the field writer_is_wait_ex may be modified by several threads simultaneously. Such fields should always be allocated an own machine word. dict_table_t: Change the type of all bit-fields to "unsigned". Make "space" a bit-field of 32 bits. Move name_hash and id_hash after all bit-fields, so that the bit-fields can be allocated together. Do not make autoinc_inited a bit-field, as we cannot allocate any field from the same machine word. dict_build_table_def_step(): Pass a local variable to fil_create_new_single_table_tablespace() and initialize table->space from it after the call, now that table->space is a bit-field. storage/innobase/include/univ.i: Applied innodb-5.1 snapshots ss799 and ss854 Revision r823: Minor cleanup related to Bug #20877. btr_print_recursive(): Replace tree->tree_indexes with tree->index. This should have been done in r453. univ.i: Add UNIV_BTR_PRINT. rw_lock_t: Reduce writer_is_wait_ex to a bit and move it close to other bitfields. Change the types to unsigned, in case ulint or ibool bitfields will not work. storage/innobase/lock/lock0lock.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/log/log0log.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/log/log0recv.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/mem/mem0dbg.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/mem/mem0pool.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/mtr/mtr0log.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/mtr/mtr0mtr.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/os/os0file.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/os/os0thread.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/page/page0cur.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/page/page0page.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. storage/innobase/pars/pars0opt.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/pars/pars0pars.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/pars/pars0sym.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. storage/innobase/read/read0read.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/rem/rem0cmp.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/rem/rem0rec.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/row/row0ins.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/row/row0mysql.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/row/row0purge.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r828: Remove dict_tree_t, which should have been removed in r453. There always was a one-to-one mapping between dict_tree_t and dict_index_t. This saves 6 machine words per B-tree index in the data dictionary cache plus the memory allocation overhead. We save one mem_heap_t object per index (15 machine words). Considering the internal fragmentation of the buddy allocator in mem_area_alloc(), this should save 32 machine words per index (128 bytes on 32-bit systems and 256 bytes on 64-bit systems). (Bug #20877) struct dict_tree_struct, dict_tree_t: Remove. struct dict_index_struct: Add page and lock. dict_tree_create(): Remove. Replace the invocation with assignment to index->page and a call to rw_lock_create(&index->lock). dict_tree_free(): Remove. Replace the invocation wtih a call to rw_lock_free(&index->lock). dict_index_get_tree(): Remove. dict_tree_get_space_reserve(): Rename to dict_index_get_space_reserve() and remove the parameter, which was unused. btr_level_list_remove(): Remove the unused parameter "tree". Replace the occurrences of "tree" with "index" in names of variables, functions and data types, e.g. "dict_tree_t tree" becomes "dict_index_t index". Remove local variables "tree" or "index" of functions that needed both "tree" and "index". Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/row/row0row.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/row/row0sel.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r820: Remove dict_col_t::clust_pos. dict_col_get_clust_pos(): Add parameter clust_index. Replace the look-up with a linear search of all columns in the clustered index. row_upd_index_replace_new_col_vals(): Compute clust_index outside the loops. Compute clust_pos outside the inner loop. row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary(): Compute clust_index outside the loops. Declare the auxiliary variables inside the loop scope. Revision r821: dict_table_t: Rename the integer field max_row_size to the Boolean field big_rows. (Bug #20877) BIG_ROW_SIZE: Move the definition from row0sel.c to dict_table_add_to_cache(). Revision r825: row_search_for_mysql(): Skip setting the next-key lock on an already delete-marked record in a clustered index where the search criteria is unique, within the same transaction (Bug #13544). Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r837: page_offset(): New function to replace many ut_align_offset(., UNIV_PAGE_SIZE) calls. dict_index_build_node_ptr(): Correct a typo in a comment. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. Revision r845: Split long lines with [] operators better. storage/innobase/row/row0uins.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/row/row0umod.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/row/row0upd.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r819: dict_col_t: Reduce ord_part to one bit. dict_index_add_to_cache(): Instead of incrementing ord_part, set it. dict_index_remove_from_cache(): Do not touch ord_part. dtype_t: Reduce mbminlen from 3 to 2 bits. row_upd(): Add a UNIV_LIKELY hint around node->in_mysql_interface. Revision r820: Remove dict_col_t::clust_pos. dict_col_get_clust_pos(): Add parameter clust_index. Replace the look-up with a linear search of all columns in the clustered index. row_upd_index_replace_new_col_vals(): Compute clust_index outside the loops. Compute clust_pos outside the inner loop. row_upd_changes_ord_field_binary(), row_upd_changes_first_fields_binary(): Compute clust_index outside the loops. Declare the auxiliary variables inside the loop scope. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. Revision r851: row_upd_sec_step(): Fix false comment. storage/innobase/row/row0vers.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/srv/srv0srv.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. Revision r832: Add dict_table_get_col_name() in preparation for getting rid of dict_col_t::name, and use it instead of col->name everywhere. Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/srv/srv0start.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/sync/sync0arr.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/sync/sync0rw.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r813: Reduce the size of the data dictionary cache. (Bug #20877) dtype_t: Remove unused field "prec", which was supposed to be used for the precision of decimal columns in stand-alone InnoDB. dtype_get_prec(): Remove. dtype_set(), dict_mem_table_add_col(): Remove parameter "prec". dtype_t: Turn all fields (mtype, prtype, len, mbminlen, mbmaxlen, len) into bit-fields. dict_table_t, dict_index_t, dict_tree_t: Omit magic_n from non-debug builds. dict_col_t: Turn ind, clust_pos, and ord_part into bit-fields. Replace the default clust_pos value ULINT_UNDEFINED with REC_MAX_N_FIELDS and replace all references to clust_pos with calls to the accessor function dict_col_get_clust_pos(). dict_field_t: Turn prefix_len and fixed_len into bit-fields. dict_tree_t: Remove pad[64]. dict_table_t: Turn the fields ibd_file_missing, tablespace_discarded, cached, flags, stat_initialized, and autoinc_inited into bit-fields. Remove does_not_fit_in_memory from non-debug builds. dict_index_t: Turn the fields trx_id_offset, n_user_defined_cols, n_uniq, n_def, n_fields, n_nullable, and cached into bit-fields. dict_foreign_struct: Turn n_fields and type into bit-fields. rw_lock_t: Turn cline, last_s_line, and last_x_line into bit-fields. Omit level unless #defined UNIV_SYNC_DEBUG. Move REC_MAX_N_FIELDS (and REC_MAX_HEAP_NO and REC_MAX_N_OWNED) from rem0rec.c to rem0types.h, as they are needed in dict0dict.ic. dict_col_get_clust_pos(): Map REC_MAX_N_FIELDS to ULINT_UNDEFINED. storage/innobase/sync/sync0sync.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/trx/trx0purge.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/trx/trx0rec.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r834: dict_col_t: Copy the fields of "dtype_t type" directly to this structure, so that all integer fields can be packed into 64 bits. (Bug #20877) dtype_t: Change the type of all bit-fields to unsigned. dict_table_get_nth_col(), dict_table_get_sys_col_noninline(), dict_table_get_sys_col(), dict_field_get_col(): Return const dict_col_t*, so that changes to dict_col_t can be detected more easily. Add const to many dict_col_t* declarations. dict_index_get_nth_type(): Replace with dict_index_get_nth_col(). dict_col_get_type(): Replace with dict_col_copy_type(). dict_col_get_min_size(), dict_col_get_max_size(), dict_col_get_fixed_size(), dict_col_get_sql_null_size(): New functions. dtype_get_at_most_n_mbchars(): Replace the parameter dtype with the parameters prtype, mbminlen, mbmaxlen. dtype_get_pad_char(), cmp_data_data(), cmp_data_data_slow(), cmp_whole_field(): Replace the dtype_t* parameter with the ulint parameters mtype, prtype. dtype_copy(): Add a const qualifier to type2 (the one being copied from). dtype_set_mblen(): Replaced with dtype_get_mblen(). dtype_get_fixed_size_low(), dtype_get_min_size_low(), dtype_get_fixed_max_low(): Replace dtype_get_fixed_size(), dtype_get_min_size(), and dtype_get_max_size(). These are used by the dict_col_get_{fixed,min,max}_size() functions. cmp_types_are_equal(): Replace with cmp_cols_are_equal(). dict_table_get_col_name(): Add a const qualifier parameter to the parameter "table". dtype_binary, dtype_binary_val: Remove. dtype_is_fixed_size(): Remove. Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/trx/trx0rseg.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/trx/trx0sys.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r829: Erase the magic number in the trx sys header using a redo-logged write; it should be redo-logged because the data structure is file-based; this patch does not fix any bug; the original erase operation was added in r781 to fix Valgrind Bug #20791 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/trx/trx0trx.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826. storage/innobase/trx/trx0undo.c: Applied innodb-5.1 snapshots ss799 and ss854 Revision r838: Revamp the line splits done in r763 and r764 that can now be done better, thanks to r826.
1105 lines
27 KiB
C
1105 lines
27 KiB
C
/******************************************************
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The wait array used in synchronization primitives
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(c) 1995 Innobase Oy
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Created 9/5/1995 Heikki Tuuri
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*******************************************************/
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#include "sync0arr.h"
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#ifdef UNIV_NONINL
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#include "sync0arr.ic"
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#endif
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#include "sync0sync.h"
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#include "sync0rw.h"
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#include "os0sync.h"
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#include "os0file.h"
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#include "srv0srv.h"
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/*
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WAIT ARRAY
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==========
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The wait array consists of cells each of which has an
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an operating system event object created for it. The threads
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waiting for a mutex, for example, can reserve a cell
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in the array and suspend themselves to wait for the event
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to become signaled. When using the wait array, remember to make
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sure that some thread holding the synchronization object
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will eventually know that there is a waiter in the array and
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signal the object, to prevent infinite wait.
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Why we chose to implement a wait array? First, to make
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mutexes fast, we had to code our own implementation of them,
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which only in usually uncommon cases resorts to using
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slow operating system primitives. Then we had the choice of
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assigning a unique OS event for each mutex, which would
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be simpler, or using a global wait array. In some operating systems,
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the global wait array solution is more efficient and flexible,
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because we can do with a very small number of OS events,
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say 200. In NT 3.51, allocating events seems to be a quadratic
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algorithm, because 10 000 events are created fast, but
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100 000 events takes a couple of minutes to create.
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*/
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/* A cell where an individual thread may wait suspended
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until a resource is released. The suspending is implemented
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using an operating system event semaphore. */
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struct sync_cell_struct {
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/* State of the cell. SC_WAKING_UP means
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sync_array_struct->n_reserved has been decremented, but the thread
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in this cell has not waken up yet. When it does, it will set the
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state to SC_FREE. Note that this is done without the protection of
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any mutex. */
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enum { SC_FREE, SC_RESERVED, SC_WAKING_UP } state;
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void* wait_object; /* pointer to the object the
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thread is waiting for; this is not
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reseted to NULL when a cell is
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freed. */
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mutex_t* old_wait_mutex; /* the latest wait mutex in cell */
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rw_lock_t* old_wait_rw_lock;/* the latest wait rw-lock in cell */
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ulint request_type; /* lock type requested on the
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object */
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const char* file; /* in debug version file where
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requested */
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ulint line; /* in debug version line where
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requested */
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os_thread_id_t thread; /* thread id of this waiting
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thread */
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ibool waiting; /* TRUE if the thread has already
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called sync_array_event_wait
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on this cell */
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ibool event_set; /* TRUE if the event is set */
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os_event_t event; /* operating system event
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semaphore handle */
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time_t reservation_time;/* time when the thread reserved
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the wait cell */
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};
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struct sync_array_struct {
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ulint n_reserved; /* number of currently reserved
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cells in the wait array */
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ulint n_cells; /* number of cells in the
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wait array */
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sync_cell_t* array; /* pointer to wait array */
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ulint protection; /* this flag tells which
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mutex protects the data */
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mutex_t mutex; /* possible database mutex
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protecting this data structure */
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os_mutex_t os_mutex; /* Possible operating system mutex
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protecting the data structure.
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As this data structure is used in
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constructing the database mutex,
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to prevent infinite recursion
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in implementation, we fall back to
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an OS mutex. */
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ulint sg_count; /* count of how many times an
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object has been signalled */
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ulint res_count; /* count of cell reservations
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since creation of the array */
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};
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#ifdef UNIV_SYNC_DEBUG
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/**********************************************************************
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This function is called only in the debug version. Detects a deadlock
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of one or more threads because of waits of semaphores. */
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static
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ibool
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sync_array_detect_deadlock(
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/*=======================*/
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/* out: TRUE if deadlock detected */
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sync_array_t* arr, /* in: wait array; NOTE! the caller must
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own the mutex to array */
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sync_cell_t* start, /* in: cell where recursive search started */
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sync_cell_t* cell, /* in: cell to search */
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ulint depth); /* in: recursion depth */
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#endif /* UNIV_SYNC_DEBUG */
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/*********************************************************************
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Gets the nth cell in array. */
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static
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sync_cell_t*
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sync_array_get_nth_cell(
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/*====================*/
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/* out: cell */
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sync_array_t* arr, /* in: sync array */
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ulint n) /* in: index */
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{
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ut_a(arr);
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ut_a(n < arr->n_cells);
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return(arr->array + n);
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}
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/**********************************************************************
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Reserves the mutex semaphore protecting a sync array. */
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static
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void
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sync_array_enter(
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/*=============*/
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sync_array_t* arr) /* in: sync wait array */
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{
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ulint protection;
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protection = arr->protection;
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if (protection == SYNC_ARRAY_OS_MUTEX) {
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os_mutex_enter(arr->os_mutex);
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} else if (protection == SYNC_ARRAY_MUTEX) {
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mutex_enter(&(arr->mutex));
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} else {
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ut_error;
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}
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}
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/**********************************************************************
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Releases the mutex semaphore protecting a sync array. */
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static
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void
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sync_array_exit(
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/*============*/
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sync_array_t* arr) /* in: sync wait array */
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{
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ulint protection;
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protection = arr->protection;
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if (protection == SYNC_ARRAY_OS_MUTEX) {
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os_mutex_exit(arr->os_mutex);
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} else if (protection == SYNC_ARRAY_MUTEX) {
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mutex_exit(&(arr->mutex));
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} else {
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ut_error;
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}
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}
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/***********************************************************************
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Creates a synchronization wait array. It is protected by a mutex
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which is automatically reserved when the functions operating on it
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are called. */
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sync_array_t*
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sync_array_create(
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/*==============*/
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/* out, own: created wait array */
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ulint n_cells, /* in: number of cells in the array
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to create */
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ulint protection) /* in: either SYNC_ARRAY_OS_MUTEX or
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SYNC_ARRAY_MUTEX: determines the type
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of mutex protecting the data structure */
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{
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sync_array_t* arr;
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sync_cell_t* cell_array;
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sync_cell_t* cell;
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ulint i;
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ut_a(n_cells > 0);
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/* Allocate memory for the data structures */
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arr = ut_malloc(sizeof(sync_array_t));
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cell_array = ut_malloc(sizeof(sync_cell_t) * n_cells);
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arr->n_cells = n_cells;
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arr->n_reserved = 0;
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arr->array = cell_array;
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arr->protection = protection;
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arr->sg_count = 0;
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arr->res_count = 0;
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/* Then create the mutex to protect the wait array complex */
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if (protection == SYNC_ARRAY_OS_MUTEX) {
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arr->os_mutex = os_mutex_create(NULL);
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} else if (protection == SYNC_ARRAY_MUTEX) {
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mutex_create(&arr->mutex, SYNC_NO_ORDER_CHECK);
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} else {
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ut_error;
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}
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for (i = 0; i < n_cells; i++) {
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cell = sync_array_get_nth_cell(arr, i);
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cell->state = SC_FREE;
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cell->wait_object = NULL;
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/* Create an operating system event semaphore with no name */
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cell->event = os_event_create(NULL);
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cell->event_set = FALSE; /* it is created in reset state */
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}
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return(arr);
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}
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/**********************************************************************
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Frees the resources in a wait array. */
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void
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sync_array_free(
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/*============*/
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sync_array_t* arr) /* in, own: sync wait array */
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{
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ulint i;
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sync_cell_t* cell;
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ulint protection;
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ut_a(arr->n_reserved == 0);
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sync_array_validate(arr);
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for (i = 0; i < arr->n_cells; i++) {
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cell = sync_array_get_nth_cell(arr, i);
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os_event_free(cell->event);
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}
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protection = arr->protection;
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/* Release the mutex protecting the wait array complex */
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if (protection == SYNC_ARRAY_OS_MUTEX) {
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os_mutex_free(arr->os_mutex);
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} else if (protection == SYNC_ARRAY_MUTEX) {
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mutex_free(&(arr->mutex));
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} else {
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ut_error;
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}
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ut_free(arr->array);
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ut_free(arr);
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}
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/************************************************************************
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Validates the integrity of the wait array. Checks
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that the number of reserved cells equals the count variable. */
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void
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sync_array_validate(
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/*================*/
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sync_array_t* arr) /* in: sync wait array */
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{
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ulint i;
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sync_cell_t* cell;
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ulint count = 0;
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sync_array_enter(arr);
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for (i = 0; i < arr->n_cells; i++) {
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cell = sync_array_get_nth_cell(arr, i);
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if (cell->state == SC_RESERVED) {
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count++;
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}
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}
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ut_a(count == arr->n_reserved);
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sync_array_exit(arr);
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}
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/**********************************************************************
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Reserves a wait array cell for waiting for an object.
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The event of the cell is reset to nonsignalled state. */
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void
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sync_array_reserve_cell(
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/*====================*/
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sync_array_t* arr, /* in: wait array */
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void* object, /* in: pointer to the object to wait for */
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ulint type, /* in: lock request type */
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const char* file, /* in: file where requested */
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ulint line, /* in: line where requested */
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ulint* index) /* out: index of the reserved cell */
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{
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sync_cell_t* cell;
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ulint i;
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ut_a(object);
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ut_a(index);
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sync_array_enter(arr);
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arr->res_count++;
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/* Reserve a new cell. */
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for (i = 0; i < arr->n_cells; i++) {
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cell = sync_array_get_nth_cell(arr, i);
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if (cell->state == SC_FREE) {
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/* We do not check cell->event_set because it is
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set outside the protection of the sync array mutex
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and we had a bug regarding it, and since resetting
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an event when it is not needed does no harm it is
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safer always to do it. */
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cell->event_set = FALSE;
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os_event_reset(cell->event);
|
|
|
|
cell->state = SC_RESERVED;
|
|
cell->reservation_time = time(NULL);
|
|
cell->thread = os_thread_get_curr_id();
|
|
|
|
cell->wait_object = object;
|
|
|
|
if (type == SYNC_MUTEX) {
|
|
cell->old_wait_mutex = object;
|
|
} else {
|
|
cell->old_wait_rw_lock = object;
|
|
}
|
|
|
|
cell->request_type = type;
|
|
cell->waiting = FALSE;
|
|
|
|
cell->file = file;
|
|
cell->line = line;
|
|
|
|
arr->n_reserved++;
|
|
|
|
*index = i;
|
|
|
|
sync_array_exit(arr);
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
ut_error; /* No free cell found */
|
|
|
|
return;
|
|
}
|
|
|
|
/**********************************************************************
|
|
Frees the cell. Note that we don't have any mutex reserved when calling
|
|
this. */
|
|
static
|
|
void
|
|
sync_array_free_cell(
|
|
/*=================*/
|
|
sync_array_t* arr, /* in: wait array */
|
|
ulint index) /* in: index of the cell in array */
|
|
{
|
|
sync_cell_t* cell;
|
|
|
|
cell = sync_array_get_nth_cell(arr, index);
|
|
|
|
ut_a(cell->state == SC_WAKING_UP);
|
|
ut_a(cell->wait_object != NULL);
|
|
|
|
cell->state = SC_FREE;
|
|
}
|
|
|
|
/**********************************************************************
|
|
Frees the cell safely by reserving the sync array mutex and decrementing
|
|
n_reserved if necessary. Should only be called from mutex_spin_wait. */
|
|
|
|
void
|
|
sync_array_free_cell_protected(
|
|
/*===========================*/
|
|
sync_array_t* arr, /* in: wait array */
|
|
ulint index) /* in: index of the cell in array */
|
|
{
|
|
sync_cell_t* cell;
|
|
|
|
sync_array_enter(arr);
|
|
|
|
cell = sync_array_get_nth_cell(arr, index);
|
|
|
|
ut_a(cell->state != SC_FREE);
|
|
ut_a(cell->wait_object != NULL);
|
|
|
|
/* We only need to decrement n_reserved if it has not already been
|
|
done by sync_array_signal_object. */
|
|
if (cell->state == SC_RESERVED) {
|
|
ut_a(arr->n_reserved > 0);
|
|
arr->n_reserved--;
|
|
} else if (cell->state == SC_WAKING_UP) {
|
|
/* This is tricky; if we don't wait for the event to be
|
|
signaled, signal_object can set the state of a cell to
|
|
SC_WAKING_UP, mutex_spin_wait can call this and set the
|
|
state to SC_FREE, and then signal_object gets around to
|
|
calling os_set_event for the cell but since it's already
|
|
been freed things break horribly. */
|
|
|
|
sync_array_exit(arr);
|
|
os_event_wait(cell->event);
|
|
sync_array_enter(arr);
|
|
}
|
|
|
|
cell->state = SC_FREE;
|
|
|
|
sync_array_exit(arr);
|
|
}
|
|
|
|
/**********************************************************************
|
|
This function should be called when a thread starts to wait on
|
|
a wait array cell. In the debug version this function checks
|
|
if the wait for a semaphore will result in a deadlock, in which
|
|
case prints info and asserts. */
|
|
|
|
void
|
|
sync_array_wait_event(
|
|
/*==================*/
|
|
sync_array_t* arr, /* in: wait array */
|
|
ulint index) /* in: index of the reserved cell */
|
|
{
|
|
sync_cell_t* cell;
|
|
os_event_t event;
|
|
|
|
ut_a(arr);
|
|
|
|
cell = sync_array_get_nth_cell(arr, index);
|
|
|
|
ut_a((cell->state == SC_RESERVED) || (cell->state == SC_WAKING_UP));
|
|
ut_a(cell->wait_object);
|
|
ut_a(!cell->waiting);
|
|
ut_ad(os_thread_get_curr_id() == cell->thread);
|
|
|
|
event = cell->event;
|
|
cell->waiting = TRUE;
|
|
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
|
|
/* We use simple enter to the mutex below, because if
|
|
we cannot acquire it at once, mutex_enter would call
|
|
recursively sync_array routines, leading to trouble.
|
|
rw_lock_debug_mutex freezes the debug lists. */
|
|
|
|
sync_array_enter(arr);
|
|
rw_lock_debug_mutex_enter();
|
|
|
|
if (TRUE == sync_array_detect_deadlock(arr, cell, cell, 0)) {
|
|
|
|
fputs("########################################\n", stderr);
|
|
ut_error;
|
|
}
|
|
|
|
rw_lock_debug_mutex_exit();
|
|
sync_array_exit(arr);
|
|
#endif
|
|
os_event_wait(event);
|
|
|
|
sync_array_free_cell(arr, index);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Reports info of a wait array cell. Note: sync_array_print_long_waits()
|
|
calls this without mutex protection. */
|
|
static
|
|
void
|
|
sync_array_cell_print(
|
|
/*==================*/
|
|
FILE* file, /* in: file where to print */
|
|
sync_cell_t* cell) /* in: sync cell */
|
|
{
|
|
mutex_t* mutex;
|
|
rw_lock_t* rwlock;
|
|
ulint type;
|
|
|
|
type = cell->request_type;
|
|
|
|
fprintf(file,
|
|
"--Thread %lu has waited at %s line %lu"
|
|
" for %.2f seconds the semaphore:\n",
|
|
(ulong) os_thread_pf(cell->thread), cell->file,
|
|
(ulong) cell->line,
|
|
difftime(time(NULL), cell->reservation_time));
|
|
fprintf(file, "Wait array cell state %lu\n", (ulong)cell->state);
|
|
|
|
/* If the memory area pointed to by old_wait_mutex /
|
|
old_wait_rw_lock has been freed, this can crash. */
|
|
|
|
if (cell->state != SC_RESERVED) {
|
|
/* If cell has this state, then even if we are holding the sync
|
|
array mutex, the wait object may get freed meanwhile. Do not
|
|
print the wait object then. */
|
|
|
|
} else if (type == SYNC_MUTEX) {
|
|
/* We use old_wait_mutex in case the cell has already
|
|
been freed meanwhile */
|
|
mutex = cell->old_wait_mutex;
|
|
|
|
fprintf(file,
|
|
"Mutex at %p created file %s line %lu, lock var %lu\n"
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
"Last time reserved in file %s line %lu, "
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
"waiters flag %lu\n",
|
|
(void*) mutex, mutex->cfile_name, (ulong) mutex->cline,
|
|
(ulong) mutex->lock_word,
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
mutex->file_name, (ulong) mutex->line,
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
(ulong) mutex->waiters);
|
|
|
|
} else if (type == RW_LOCK_EX || type == RW_LOCK_SHARED) {
|
|
|
|
fputs(type == RW_LOCK_EX ? "X-lock on" : "S-lock on", file);
|
|
|
|
rwlock = cell->old_wait_rw_lock;
|
|
|
|
fprintf(file,
|
|
" RW-latch at %p created in file %s line %lu\n",
|
|
(void*) rwlock, rwlock->cfile_name,
|
|
(ulong) rwlock->cline);
|
|
if (rwlock->writer != RW_LOCK_NOT_LOCKED) {
|
|
fprintf(file,
|
|
"a writer (thread id %lu) has"
|
|
" reserved it in mode %s",
|
|
(ulong) os_thread_pf(rwlock->writer_thread),
|
|
rwlock->writer == RW_LOCK_EX
|
|
? " exclusive\n"
|
|
: " wait exclusive\n");
|
|
}
|
|
|
|
fprintf(file,
|
|
"number of readers %lu, waiters flag %lu\n"
|
|
"Last time read locked in file %s line %lu\n"
|
|
"Last time write locked in file %s line %lu\n",
|
|
(ulong) rwlock->reader_count,
|
|
(ulong) rwlock->waiters,
|
|
rwlock->last_s_file_name,
|
|
(ulong) rwlock->last_s_line,
|
|
rwlock->last_x_file_name,
|
|
(ulong) rwlock->last_x_line);
|
|
} else {
|
|
ut_error;
|
|
}
|
|
|
|
if (cell->event_set) {
|
|
fputs("wait is ending\n", file);
|
|
}
|
|
}
|
|
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
/**********************************************************************
|
|
Looks for a cell with the given thread id. */
|
|
static
|
|
sync_cell_t*
|
|
sync_array_find_thread(
|
|
/*===================*/
|
|
/* out: pointer to cell or NULL
|
|
if not found */
|
|
sync_array_t* arr, /* in: wait array */
|
|
os_thread_id_t thread) /* in: thread id */
|
|
{
|
|
ulint i;
|
|
sync_cell_t* cell;
|
|
|
|
for (i = 0; i < arr->n_cells; i++) {
|
|
|
|
cell = sync_array_get_nth_cell(arr, i);
|
|
|
|
if ((cell->state == SC_RESERVED)
|
|
&& os_thread_eq(cell->thread, thread)) {
|
|
|
|
return(cell); /* Found */
|
|
}
|
|
}
|
|
|
|
return(NULL); /* Not found */
|
|
}
|
|
|
|
/**********************************************************************
|
|
Recursion step for deadlock detection. */
|
|
static
|
|
ibool
|
|
sync_array_deadlock_step(
|
|
/*=====================*/
|
|
/* out: TRUE if deadlock detected */
|
|
sync_array_t* arr, /* in: wait array; NOTE! the caller must
|
|
own the mutex to array */
|
|
sync_cell_t* start, /* in: cell where recursive search
|
|
started */
|
|
os_thread_id_t thread, /* in: thread to look at */
|
|
ulint pass, /* in: pass value */
|
|
ulint depth) /* in: recursion depth */
|
|
{
|
|
sync_cell_t* new;
|
|
ibool ret;
|
|
|
|
depth++;
|
|
|
|
if (pass != 0) {
|
|
/* If pass != 0, then we do not know which threads are
|
|
responsible of releasing the lock, and no deadlock can
|
|
be detected. */
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
new = sync_array_find_thread(arr, thread);
|
|
|
|
if (new == start) {
|
|
/* Stop running of other threads */
|
|
|
|
ut_dbg_stop_threads = TRUE;
|
|
|
|
/* Deadlock */
|
|
fputs("########################################\n"
|
|
"DEADLOCK of threads detected!\n", stderr);
|
|
|
|
return(TRUE);
|
|
|
|
} else if (new) {
|
|
ret = sync_array_detect_deadlock(arr, start, new, depth);
|
|
|
|
if (ret) {
|
|
return(TRUE);
|
|
}
|
|
}
|
|
return(FALSE);
|
|
}
|
|
|
|
/**********************************************************************
|
|
This function is called only in the debug version. Detects a deadlock
|
|
of one or more threads because of waits of semaphores. */
|
|
static
|
|
ibool
|
|
sync_array_detect_deadlock(
|
|
/*=======================*/
|
|
/* out: TRUE if deadlock detected */
|
|
sync_array_t* arr, /* in: wait array; NOTE! the caller must
|
|
own the mutex to array */
|
|
sync_cell_t* start, /* in: cell where recursive search started */
|
|
sync_cell_t* cell, /* in: cell to search */
|
|
ulint depth) /* in: recursion depth */
|
|
{
|
|
mutex_t* mutex;
|
|
rw_lock_t* lock;
|
|
os_thread_id_t thread;
|
|
ibool ret;
|
|
rw_lock_debug_t*debug;
|
|
|
|
ut_a(arr && start && cell);
|
|
ut_ad(cell->wait_object);
|
|
ut_ad(os_thread_get_curr_id() == start->thread);
|
|
ut_ad(depth < 100);
|
|
|
|
depth++;
|
|
|
|
if (cell->event_set || !cell->waiting) {
|
|
|
|
return(FALSE); /* No deadlock here */
|
|
}
|
|
|
|
if (cell->request_type == SYNC_MUTEX) {
|
|
|
|
mutex = cell->wait_object;
|
|
|
|
if (mutex_get_lock_word(mutex) != 0) {
|
|
|
|
thread = mutex->thread_id;
|
|
|
|
/* Note that mutex->thread_id above may be
|
|
also OS_THREAD_ID_UNDEFINED, because the
|
|
thread which held the mutex maybe has not
|
|
yet updated the value, or it has already
|
|
released the mutex: in this case no deadlock
|
|
can occur, as the wait array cannot contain
|
|
a thread with ID_UNDEFINED value. */
|
|
|
|
ret = sync_array_deadlock_step(arr, start, thread, 0,
|
|
depth);
|
|
if (ret) {
|
|
fprintf(stderr,
|
|
"Mutex %p owned by thread %lu"
|
|
" file %s line %lu\n",
|
|
(void*) mutex,
|
|
(ulong) os_thread_pf(mutex->thread_id),
|
|
mutex->file_name, (ulong) mutex->line);
|
|
sync_array_cell_print(stderr, cell);
|
|
|
|
return(TRUE);
|
|
}
|
|
}
|
|
|
|
return(FALSE); /* No deadlock */
|
|
|
|
} else if (cell->request_type == RW_LOCK_EX) {
|
|
|
|
lock = cell->wait_object;
|
|
|
|
debug = UT_LIST_GET_FIRST(lock->debug_list);
|
|
|
|
while (debug != NULL) {
|
|
|
|
thread = debug->thread_id;
|
|
|
|
if (((debug->lock_type == RW_LOCK_EX)
|
|
&& !os_thread_eq(thread, cell->thread))
|
|
|| ((debug->lock_type == RW_LOCK_WAIT_EX)
|
|
&& !os_thread_eq(thread, cell->thread))
|
|
|| (debug->lock_type == RW_LOCK_SHARED)) {
|
|
|
|
/* The (wait) x-lock request can block
|
|
infinitely only if someone (can be also cell
|
|
thread) is holding s-lock, or someone
|
|
(cannot be cell thread) (wait) x-lock, and
|
|
he is blocked by start thread */
|
|
|
|
ret = sync_array_deadlock_step(
|
|
arr, start, thread, debug->pass,
|
|
depth);
|
|
if (ret) {
|
|
print:
|
|
fprintf(stderr, "rw-lock %p ",
|
|
(void*) lock);
|
|
sync_array_cell_print(stderr, cell);
|
|
rw_lock_debug_print(debug);
|
|
return(TRUE);
|
|
}
|
|
}
|
|
|
|
debug = UT_LIST_GET_NEXT(list, debug);
|
|
}
|
|
|
|
return(FALSE);
|
|
|
|
} else if (cell->request_type == RW_LOCK_SHARED) {
|
|
|
|
lock = cell->wait_object;
|
|
debug = UT_LIST_GET_FIRST(lock->debug_list);
|
|
|
|
while (debug != NULL) {
|
|
|
|
thread = debug->thread_id;
|
|
|
|
if ((debug->lock_type == RW_LOCK_EX)
|
|
|| (debug->lock_type == RW_LOCK_WAIT_EX)) {
|
|
|
|
/* The s-lock request can block infinitely
|
|
only if someone (can also be cell thread) is
|
|
holding (wait) x-lock, and he is blocked by
|
|
start thread */
|
|
|
|
ret = sync_array_deadlock_step(
|
|
arr, start, thread, debug->pass,
|
|
depth);
|
|
if (ret) {
|
|
goto print;
|
|
}
|
|
}
|
|
|
|
debug = UT_LIST_GET_NEXT(list, debug);
|
|
}
|
|
|
|
return(FALSE);
|
|
|
|
} else {
|
|
ut_error;
|
|
}
|
|
|
|
return(TRUE); /* Execution never reaches this line: for compiler
|
|
fooling only */
|
|
}
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
|
|
/**********************************************************************
|
|
Determines if we can wake up the thread waiting for a sempahore. */
|
|
static
|
|
ibool
|
|
sync_arr_cell_can_wake_up(
|
|
/*======================*/
|
|
sync_cell_t* cell) /* in: cell to search */
|
|
{
|
|
mutex_t* mutex;
|
|
rw_lock_t* lock;
|
|
|
|
if (cell->request_type == SYNC_MUTEX) {
|
|
|
|
mutex = cell->wait_object;
|
|
|
|
if (mutex_get_lock_word(mutex) == 0) {
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
} else if (cell->request_type == RW_LOCK_EX) {
|
|
|
|
lock = cell->wait_object;
|
|
|
|
if (rw_lock_get_reader_count(lock) == 0
|
|
&& rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED) {
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
if (rw_lock_get_reader_count(lock) == 0
|
|
&& rw_lock_get_writer(lock) == RW_LOCK_WAIT_EX
|
|
&& os_thread_eq(lock->writer_thread, cell->thread)) {
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
} else if (cell->request_type == RW_LOCK_SHARED) {
|
|
lock = cell->wait_object;
|
|
|
|
if (rw_lock_get_writer(lock) == RW_LOCK_NOT_LOCKED) {
|
|
|
|
return(TRUE);
|
|
}
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Looks for the cells in the wait array which refer to the wait object
|
|
specified, and sets their corresponding events to the signaled state. In this
|
|
way releases the threads waiting for the object to contend for the object.
|
|
It is possible that no such cell is found, in which case does nothing. */
|
|
|
|
void
|
|
sync_array_signal_object(
|
|
/*=====================*/
|
|
sync_array_t* arr, /* in: wait array */
|
|
void* object) /* in: wait object */
|
|
{
|
|
sync_cell_t* cell;
|
|
ulint count;
|
|
ulint i;
|
|
ulint res_count;
|
|
|
|
/* We store the addresses of cells we need to signal and signal
|
|
them only after we have released the sync array's mutex (for
|
|
performance reasons). cell_count is the number of such cells, and
|
|
cell_ptr points to the first one. If there are less than
|
|
UT_ARR_SIZE(cells) of them, cell_ptr == &cells[0], otherwise
|
|
cell_ptr points to malloc'd memory that we must free. */
|
|
|
|
sync_cell_t* cells[100];
|
|
sync_cell_t** cell_ptr = &cells[0];
|
|
ulint cell_count = 0;
|
|
ulint cell_max_count = UT_ARR_SIZE(cells);
|
|
|
|
ut_a(100 == cell_max_count);
|
|
|
|
sync_array_enter(arr);
|
|
|
|
arr->sg_count++;
|
|
|
|
i = 0;
|
|
count = 0;
|
|
|
|
/* We need to store this to a local variable because it is modified
|
|
inside the loop */
|
|
res_count = arr->n_reserved;
|
|
|
|
while (count < res_count) {
|
|
|
|
cell = sync_array_get_nth_cell(arr, i);
|
|
|
|
if (cell->state == SC_RESERVED) {
|
|
|
|
count++;
|
|
if (cell->wait_object == object) {
|
|
cell->state = SC_WAKING_UP;
|
|
|
|
ut_a(arr->n_reserved > 0);
|
|
arr->n_reserved--;
|
|
|
|
if (cell_count == cell_max_count) {
|
|
sync_cell_t** old_cell_ptr = cell_ptr;
|
|
size_t old_size, new_size;
|
|
|
|
old_size = cell_max_count
|
|
* sizeof(sync_cell_t*);
|
|
cell_max_count *= 2;
|
|
new_size = cell_max_count
|
|
* sizeof(sync_cell_t*);
|
|
|
|
cell_ptr = malloc(new_size);
|
|
ut_a(cell_ptr);
|
|
memcpy(cell_ptr, old_cell_ptr,
|
|
old_size);
|
|
|
|
if (old_cell_ptr != &cells[0]) {
|
|
free(old_cell_ptr);
|
|
}
|
|
}
|
|
|
|
cell_ptr[cell_count] = cell;
|
|
cell_count++;
|
|
}
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
sync_array_exit(arr);
|
|
|
|
for (i = 0; i < cell_count; i++) {
|
|
cell = cell_ptr[i];
|
|
|
|
cell->event_set = TRUE;
|
|
os_event_set(cell->event);
|
|
}
|
|
|
|
if (cell_ptr != &cells[0]) {
|
|
free(cell_ptr);
|
|
}
|
|
}
|
|
|
|
/**************************************************************************
|
|
If the wakeup algorithm does not work perfectly at semaphore relases,
|
|
this function will do the waking (see the comment in mutex_exit). This
|
|
function should be called about every 1 second in the server.
|
|
|
|
Note that there's a race condition between this thread and mutex_exit
|
|
changing the lock_word and calling signal_object, so sometimes this finds
|
|
threads to wake up even when nothing has gone wrong. */
|
|
|
|
void
|
|
sync_arr_wake_threads_if_sema_free(void)
|
|
/*====================================*/
|
|
{
|
|
sync_array_t* arr = sync_primary_wait_array;
|
|
sync_cell_t* cell;
|
|
ulint count;
|
|
ulint i;
|
|
ulint res_count;
|
|
|
|
sync_array_enter(arr);
|
|
|
|
i = 0;
|
|
count = 0;
|
|
|
|
/* We need to store this to a local variable because it is modified
|
|
inside the loop */
|
|
|
|
res_count = arr->n_reserved;
|
|
|
|
while (count < res_count) {
|
|
|
|
cell = sync_array_get_nth_cell(arr, i);
|
|
|
|
if (cell->state == SC_RESERVED) {
|
|
|
|
count++;
|
|
|
|
if (sync_arr_cell_can_wake_up(cell)) {
|
|
cell->state = SC_WAKING_UP;
|
|
cell->event_set = TRUE;
|
|
os_event_set(cell->event);
|
|
|
|
ut_a(arr->n_reserved > 0);
|
|
arr->n_reserved--;
|
|
}
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
sync_array_exit(arr);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Prints warnings of long semaphore waits to stderr. */
|
|
|
|
ibool
|
|
sync_array_print_long_waits(void)
|
|
/*=============================*/
|
|
/* out: TRUE if fatal semaphore wait threshold
|
|
was exceeded */
|
|
{
|
|
sync_cell_t* cell;
|
|
ibool old_val;
|
|
ibool noticed = FALSE;
|
|
ulint i;
|
|
ulint fatal_timeout = srv_fatal_semaphore_wait_threshold;
|
|
ibool fatal = FALSE;
|
|
|
|
for (i = 0; i < sync_primary_wait_array->n_cells; i++) {
|
|
|
|
cell = sync_array_get_nth_cell(sync_primary_wait_array, i);
|
|
|
|
if ((cell->state != SC_FREE)
|
|
&& difftime(time(NULL), cell->reservation_time) > 240) {
|
|
fputs("InnoDB: Warning: a long semaphore wait:\n",
|
|
stderr);
|
|
sync_array_cell_print(stderr, cell);
|
|
noticed = TRUE;
|
|
}
|
|
|
|
if ((cell->state != SC_FREE)
|
|
&& difftime(time(NULL), cell->reservation_time)
|
|
> fatal_timeout) {
|
|
fatal = TRUE;
|
|
}
|
|
}
|
|
|
|
if (noticed) {
|
|
fprintf(stderr,
|
|
"InnoDB: ###### Starts InnoDB Monitor"
|
|
" for 30 secs to print diagnostic info:\n");
|
|
old_val = srv_print_innodb_monitor;
|
|
|
|
/* If some crucial semaphore is reserved, then also the InnoDB
|
|
Monitor can hang, and we do not get diagnostics. Since in
|
|
many cases an InnoDB hang is caused by a pwrite() or a pread()
|
|
call hanging inside the operating system, let us print right
|
|
now the values of pending calls of these. */
|
|
|
|
fprintf(stderr,
|
|
"InnoDB: Pending preads %lu, pwrites %lu\n",
|
|
(ulong)os_file_n_pending_preads,
|
|
(ulong)os_file_n_pending_pwrites);
|
|
|
|
srv_print_innodb_monitor = TRUE;
|
|
os_event_set(srv_lock_timeout_thread_event);
|
|
|
|
os_thread_sleep(30000000);
|
|
|
|
srv_print_innodb_monitor = old_val;
|
|
fprintf(stderr,
|
|
"InnoDB: ###### Diagnostic info printed"
|
|
" to the standard error stream\n");
|
|
}
|
|
|
|
return(fatal);
|
|
}
|
|
|
|
/**************************************************************************
|
|
Prints info of the wait array. */
|
|
static
|
|
void
|
|
sync_array_output_info(
|
|
/*===================*/
|
|
FILE* file, /* in: file where to print */
|
|
sync_array_t* arr) /* in: wait array; NOTE! caller must own the
|
|
mutex */
|
|
{
|
|
sync_cell_t* cell;
|
|
ulint i;
|
|
|
|
fprintf(file,
|
|
"OS WAIT ARRAY INFO: reservation count %ld,"
|
|
" signal count %ld\n",
|
|
(long) arr->res_count,
|
|
(long) arr->sg_count);
|
|
for (i = 0; i < arr->n_cells; i++) {
|
|
|
|
cell = sync_array_get_nth_cell(arr, i);
|
|
|
|
if (cell->state != SC_FREE) {
|
|
sync_array_cell_print(file, cell);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**************************************************************************
|
|
Prints info of the wait array. */
|
|
|
|
void
|
|
sync_array_print_info(
|
|
/*==================*/
|
|
FILE* file, /* in: file where to print */
|
|
sync_array_t* arr) /* in: wait array */
|
|
{
|
|
sync_array_enter(arr);
|
|
|
|
sync_array_output_info(file, arr);
|
|
|
|
sync_array_exit(arr);
|
|
}
|
|
|