mirror of
https://github.com/MariaDB/server.git
synced 2025-01-23 15:24:16 +01:00
bf2f50d345
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.
1380 lines
36 KiB
C
1380 lines
36 KiB
C
/******************************************************
|
|
Mutex, the basic synchronization primitive
|
|
|
|
(c) 1995 Innobase Oy
|
|
|
|
Created 9/5/1995 Heikki Tuuri
|
|
*******************************************************/
|
|
|
|
#include "sync0sync.h"
|
|
#ifdef UNIV_NONINL
|
|
#include "sync0sync.ic"
|
|
#endif
|
|
|
|
#include "sync0rw.h"
|
|
#include "buf0buf.h"
|
|
#include "srv0srv.h"
|
|
#include "buf0types.h"
|
|
|
|
/*
|
|
REASONS FOR IMPLEMENTING THE SPIN LOCK MUTEX
|
|
============================================
|
|
|
|
Semaphore operations in operating systems are slow: Solaris on a 1993 Sparc
|
|
takes 3 microseconds (us) for a lock-unlock pair and Windows NT on a 1995
|
|
Pentium takes 20 microseconds for a lock-unlock pair. Therefore, we have to
|
|
implement our own efficient spin lock mutex. Future operating systems may
|
|
provide efficient spin locks, but we cannot count on that.
|
|
|
|
Another reason for implementing a spin lock is that on multiprocessor systems
|
|
it can be more efficient for a processor to run a loop waiting for the
|
|
semaphore to be released than to switch to a different thread. A thread switch
|
|
takes 25 us on both platforms mentioned above. See Gray and Reuter's book
|
|
Transaction processing for background.
|
|
|
|
How long should the spin loop last before suspending the thread? On a
|
|
uniprocessor, spinning does not help at all, because if the thread owning the
|
|
mutex is not executing, it cannot be released. Spinning actually wastes
|
|
resources.
|
|
|
|
On a multiprocessor, we do not know if the thread owning the mutex is
|
|
executing or not. Thus it would make sense to spin as long as the operation
|
|
guarded by the mutex would typically last assuming that the thread is
|
|
executing. If the mutex is not released by that time, we may assume that the
|
|
thread owning the mutex is not executing and suspend the waiting thread.
|
|
|
|
A typical operation (where no i/o involved) guarded by a mutex or a read-write
|
|
lock may last 1 - 20 us on the current Pentium platform. The longest
|
|
operations are the binary searches on an index node.
|
|
|
|
We conclude that the best choice is to set the spin time at 20 us. Then the
|
|
system should work well on a multiprocessor. On a uniprocessor we have to
|
|
make sure that thread swithches due to mutex collisions are not frequent,
|
|
i.e., they do not happen every 100 us or so, because that wastes too much
|
|
resources. If the thread switches are not frequent, the 20 us wasted in spin
|
|
loop is not too much.
|
|
|
|
Empirical studies on the effect of spin time should be done for different
|
|
platforms.
|
|
|
|
|
|
IMPLEMENTATION OF THE MUTEX
|
|
===========================
|
|
|
|
For background, see Curt Schimmel's book on Unix implementation on modern
|
|
architectures. The key points in the implementation are atomicity and
|
|
serialization of memory accesses. The test-and-set instruction (XCHG in
|
|
Pentium) must be atomic. As new processors may have weak memory models, also
|
|
serialization of memory references may be necessary. The successor of Pentium,
|
|
P6, has at least one mode where the memory model is weak. As far as we know,
|
|
in Pentium all memory accesses are serialized in the program order and we do
|
|
not have to worry about the memory model. On other processors there are
|
|
special machine instructions called a fence, memory barrier, or storage
|
|
barrier (STBAR in Sparc), which can be used to serialize the memory accesses
|
|
to happen in program order relative to the fence instruction.
|
|
|
|
Leslie Lamport has devised a "bakery algorithm" to implement a mutex without
|
|
the atomic test-and-set, but his algorithm should be modified for weak memory
|
|
models. We do not use Lamport's algorithm, because we guess it is slower than
|
|
the atomic test-and-set.
|
|
|
|
Our mutex implementation works as follows: After that we perform the atomic
|
|
test-and-set instruction on the memory word. If the test returns zero, we
|
|
know we got the lock first. If the test returns not zero, some other thread
|
|
was quicker and got the lock: then we spin in a loop reading the memory word,
|
|
waiting it to become zero. It is wise to just read the word in the loop, not
|
|
perform numerous test-and-set instructions, because they generate memory
|
|
traffic between the cache and the main memory. The read loop can just access
|
|
the cache, saving bus bandwidth.
|
|
|
|
If we cannot acquire the mutex lock in the specified time, we reserve a cell
|
|
in the wait array, set the waiters byte in the mutex to 1. To avoid a race
|
|
condition, after setting the waiters byte and before suspending the waiting
|
|
thread, we still have to check that the mutex is reserved, because it may
|
|
have happened that the thread which was holding the mutex has just released
|
|
it and did not see the waiters byte set to 1, a case which would lead the
|
|
other thread to an infinite wait.
|
|
|
|
LEMMA 1: After a thread resets the event of the cell it reserves for waiting
|
|
========
|
|
for a mutex, some thread will eventually call sync_array_signal_object with
|
|
the mutex as an argument. Thus no infinite wait is possible.
|
|
|
|
Proof: After making the reservation the thread sets the waiters field in the
|
|
mutex to 1. Then it checks that the mutex is still reserved by some thread,
|
|
or it reserves the mutex for itself. In any case, some thread (which may be
|
|
also some earlier thread, not necessarily the one currently holding the mutex)
|
|
will set the waiters field to 0 in mutex_exit, and then call
|
|
sync_array_signal_object with the mutex as an argument.
|
|
Q.E.D. */
|
|
|
|
ulint sync_dummy = 0;
|
|
|
|
/* The number of system calls made in this module. Intended for performance
|
|
monitoring. */
|
|
|
|
ulint mutex_system_call_count = 0;
|
|
|
|
/* Number of spin waits on mutexes: for performance monitoring */
|
|
|
|
ulint mutex_spin_round_count = 0;
|
|
ulint mutex_spin_wait_count = 0;
|
|
ulint mutex_os_wait_count = 0;
|
|
ulint mutex_exit_count = 0;
|
|
|
|
/* The global array of wait cells for implementation of the database's own
|
|
mutexes and read-write locks */
|
|
sync_array_t* sync_primary_wait_array;
|
|
|
|
/* This variable is set to TRUE when sync_init is called */
|
|
ibool sync_initialized = FALSE;
|
|
|
|
|
|
typedef struct sync_level_struct sync_level_t;
|
|
typedef struct sync_thread_struct sync_thread_t;
|
|
|
|
/* The latch levels currently owned by threads are stored in this data
|
|
structure; the size of this array is OS_THREAD_MAX_N */
|
|
|
|
sync_thread_t* sync_thread_level_arrays;
|
|
|
|
/* Mutex protecting sync_thread_level_arrays */
|
|
mutex_t sync_thread_mutex;
|
|
|
|
/* Global list of database mutexes (not OS mutexes) created. */
|
|
ut_list_base_node_t mutex_list;
|
|
|
|
/* Mutex protecting the mutex_list variable */
|
|
mutex_t mutex_list_mutex;
|
|
|
|
/* Latching order checks start when this is set TRUE */
|
|
ibool sync_order_checks_on = FALSE;
|
|
|
|
/* Dummy mutex used to implement mutex_fence */
|
|
mutex_t dummy_mutex_for_fence;
|
|
|
|
struct sync_thread_struct{
|
|
os_thread_id_t id; /* OS thread id */
|
|
sync_level_t* levels; /* level array for this thread; if this is NULL
|
|
this slot is unused */
|
|
};
|
|
|
|
/* Number of slots reserved for each OS thread in the sync level array */
|
|
#define SYNC_THREAD_N_LEVELS 10000
|
|
|
|
struct sync_level_struct{
|
|
void* latch; /* pointer to a mutex or an rw-lock; NULL means that
|
|
the slot is empty */
|
|
ulint level; /* level of the latch in the latching order */
|
|
};
|
|
|
|
/**********************************************************************
|
|
A noninlined function that reserves a mutex. In ha_innodb.cc we have disabled
|
|
inlining of InnoDB functions, and no inlined functions should be called from
|
|
there. That is why we need to duplicate the inlined function here. */
|
|
|
|
void
|
|
mutex_enter_noninline(
|
|
/*==================*/
|
|
mutex_t* mutex) /* in: mutex */
|
|
{
|
|
mutex_enter(mutex);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Releases a mutex. */
|
|
|
|
void
|
|
mutex_exit_noninline(
|
|
/*=================*/
|
|
mutex_t* mutex) /* in: mutex */
|
|
{
|
|
mutex_exit(mutex);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Creates, or rather, initializes a mutex object in a specified memory
|
|
location (which must be appropriately aligned). The mutex is initialized
|
|
in the reset state. Explicit freeing of the mutex with mutex_free is
|
|
necessary only if the memory block containing it is freed. */
|
|
|
|
void
|
|
mutex_create_func(
|
|
/*==============*/
|
|
mutex_t* mutex, /* in: pointer to memory */
|
|
ulint level, /* in: level */
|
|
const char* cfile_name, /* in: file name where created */
|
|
ulint cline, /* in: file line where created */
|
|
const char* cmutex_name) /* in: mutex name */
|
|
{
|
|
#if defined(_WIN32) && defined(UNIV_CAN_USE_X86_ASSEMBLER)
|
|
mutex_reset_lock_word(mutex);
|
|
#else
|
|
os_fast_mutex_init(&(mutex->os_fast_mutex));
|
|
mutex->lock_word = 0;
|
|
#endif
|
|
mutex_set_waiters(mutex, 0);
|
|
mutex->magic_n = MUTEX_MAGIC_N;
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
mutex->line = 0;
|
|
mutex->file_name = "not yet reserved";
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
mutex->level = level;
|
|
mutex->cfile_name = cfile_name;
|
|
mutex->cline = cline;
|
|
#ifndef UNIV_HOTBACKUP
|
|
mutex->cmutex_name= cmutex_name;
|
|
mutex->count_using= 0;
|
|
mutex->mutex_type= 0;
|
|
mutex->lspent_time= 0;
|
|
mutex->lmax_spent_time= 0;
|
|
mutex->count_spin_loop= 0;
|
|
mutex->count_spin_rounds= 0;
|
|
mutex->count_os_wait= 0;
|
|
mutex->count_os_yield= 0;
|
|
#endif /* !UNIV_HOTBACKUP */
|
|
|
|
/* Check that lock_word is aligned; this is important on Intel */
|
|
ut_ad(((ulint)(&(mutex->lock_word))) % 4 == 0);
|
|
|
|
/* NOTE! The very first mutexes are not put to the mutex list */
|
|
|
|
if ((mutex == &mutex_list_mutex) || (mutex == &sync_thread_mutex)) {
|
|
|
|
return;
|
|
}
|
|
|
|
mutex_enter(&mutex_list_mutex);
|
|
|
|
if (UT_LIST_GET_LEN(mutex_list) > 0) {
|
|
ut_a(UT_LIST_GET_FIRST(mutex_list)->magic_n == MUTEX_MAGIC_N);
|
|
}
|
|
|
|
UT_LIST_ADD_FIRST(list, mutex_list, mutex);
|
|
|
|
mutex_exit(&mutex_list_mutex);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Calling this function is obligatory only if the memory buffer containing
|
|
the mutex is freed. Removes a mutex object from the mutex list. The mutex
|
|
is checked to be in the reset state. */
|
|
|
|
void
|
|
mutex_free(
|
|
/*=======*/
|
|
mutex_t* mutex) /* in: mutex */
|
|
{
|
|
#ifdef UNIV_DEBUG
|
|
ut_a(mutex_validate(mutex));
|
|
#endif /* UNIV_DEBUG */
|
|
ut_a(mutex_get_lock_word(mutex) == 0);
|
|
ut_a(mutex_get_waiters(mutex) == 0);
|
|
|
|
if (mutex != &mutex_list_mutex && mutex != &sync_thread_mutex) {
|
|
|
|
mutex_enter(&mutex_list_mutex);
|
|
|
|
if (UT_LIST_GET_PREV(list, mutex)) {
|
|
ut_a(UT_LIST_GET_PREV(list, mutex)->magic_n
|
|
== MUTEX_MAGIC_N);
|
|
}
|
|
if (UT_LIST_GET_NEXT(list, mutex)) {
|
|
ut_a(UT_LIST_GET_NEXT(list, mutex)->magic_n
|
|
== MUTEX_MAGIC_N);
|
|
}
|
|
|
|
UT_LIST_REMOVE(list, mutex_list, mutex);
|
|
|
|
mutex_exit(&mutex_list_mutex);
|
|
}
|
|
|
|
#if !defined(_WIN32) || !defined(UNIV_CAN_USE_X86_ASSEMBLER)
|
|
os_fast_mutex_free(&(mutex->os_fast_mutex));
|
|
#endif
|
|
/* If we free the mutex protecting the mutex list (freeing is
|
|
not necessary), we have to reset the magic number AFTER removing
|
|
it from the list. */
|
|
|
|
mutex->magic_n = 0;
|
|
}
|
|
|
|
/************************************************************************
|
|
Tries to lock the mutex for the current thread. If the lock is not acquired
|
|
immediately, returns with return value 1. */
|
|
|
|
ulint
|
|
mutex_enter_nowait(
|
|
/*===============*/
|
|
/* out: 0 if succeed, 1 if not */
|
|
mutex_t* mutex, /* in: pointer to mutex */
|
|
const char* file_name __attribute__((unused)),
|
|
/* in: file name where mutex
|
|
requested */
|
|
ulint line __attribute__((unused)))
|
|
/* in: line where requested */
|
|
{
|
|
ut_ad(mutex_validate(mutex));
|
|
|
|
if (!mutex_test_and_set(mutex)) {
|
|
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
mutex_set_debug_info(mutex, file_name, line);
|
|
#endif
|
|
|
|
return(0); /* Succeeded! */
|
|
}
|
|
|
|
return(1);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Checks that the mutex has been initialized. */
|
|
|
|
ibool
|
|
mutex_validate(
|
|
/*===========*/
|
|
mutex_t* mutex)
|
|
{
|
|
ut_a(mutex);
|
|
ut_a(mutex->magic_n == MUTEX_MAGIC_N);
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Sets the waiters field in a mutex. */
|
|
|
|
void
|
|
mutex_set_waiters(
|
|
/*==============*/
|
|
mutex_t* mutex, /* in: mutex */
|
|
ulint n) /* in: value to set */
|
|
{
|
|
volatile ulint* ptr; /* declared volatile to ensure that
|
|
the value is stored to memory */
|
|
ut_ad(mutex);
|
|
|
|
ptr = &(mutex->waiters);
|
|
|
|
*ptr = n; /* Here we assume that the write of a single
|
|
word in memory is atomic */
|
|
}
|
|
|
|
/**********************************************************************
|
|
Reserves a mutex for the current thread. If the mutex is reserved, the
|
|
function spins a preset time (controlled by SYNC_SPIN_ROUNDS), waiting
|
|
for the mutex before suspending the thread. */
|
|
|
|
void
|
|
mutex_spin_wait(
|
|
/*============*/
|
|
mutex_t* mutex, /* in: pointer to mutex */
|
|
const char* file_name, /* in: file name where mutex
|
|
requested */
|
|
ulint line) /* in: line where requested */
|
|
{
|
|
ulint index; /* index of the reserved wait cell */
|
|
ulint i; /* spin round count */
|
|
#ifndef UNIV_HOTBACKUP
|
|
ib_longlong lstart_time = 0, lfinish_time; /* for timing os_wait */
|
|
ulint ltime_diff;
|
|
ulint sec;
|
|
ulint ms;
|
|
uint timer_started = 0;
|
|
#endif /* !UNIV_HOTBACKUP */
|
|
ut_ad(mutex);
|
|
|
|
mutex_loop:
|
|
|
|
i = 0;
|
|
|
|
/* Spin waiting for the lock word to become zero. Note that we do
|
|
not have to assume that the read access to the lock word is atomic,
|
|
as the actual locking is always committed with atomic test-and-set.
|
|
In reality, however, all processors probably have an atomic read of
|
|
a memory word. */
|
|
|
|
spin_loop:
|
|
#ifndef UNIV_HOTBACKUP
|
|
mutex_spin_wait_count++;
|
|
mutex->count_spin_loop++;
|
|
#endif /* !UNIV_HOTBACKUP */
|
|
|
|
while (mutex_get_lock_word(mutex) != 0 && i < SYNC_SPIN_ROUNDS) {
|
|
if (srv_spin_wait_delay) {
|
|
ut_delay(ut_rnd_interval(0, srv_spin_wait_delay));
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
if (i == SYNC_SPIN_ROUNDS) {
|
|
#ifndef UNIV_HOTBACKUP
|
|
mutex->count_os_yield++;
|
|
if (timed_mutexes == 1 && timer_started==0) {
|
|
ut_usectime(&sec, &ms);
|
|
lstart_time= (ib_longlong)sec * 1000000 + ms;
|
|
timer_started = 1;
|
|
}
|
|
#endif /* !UNIV_HOTBACKUP */
|
|
os_thread_yield();
|
|
}
|
|
|
|
#ifdef UNIV_SRV_PRINT_LATCH_WAITS
|
|
fprintf(stderr,
|
|
"Thread %lu spin wait mutex at %p"
|
|
" cfile %s cline %lu rnds %lu\n",
|
|
(ulong) os_thread_pf(os_thread_get_curr_id()), (void*) mutex,
|
|
mutex->cfile_name, (ulong) mutex->cline, (ulong) i);
|
|
#endif
|
|
|
|
mutex_spin_round_count += i;
|
|
|
|
#ifndef UNIV_HOTBACKUP
|
|
mutex->count_spin_rounds += i;
|
|
#endif /* !UNIV_HOTBACKUP */
|
|
|
|
if (mutex_test_and_set(mutex) == 0) {
|
|
/* Succeeded! */
|
|
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
mutex_set_debug_info(mutex, file_name, line);
|
|
#endif
|
|
|
|
goto finish_timing;
|
|
}
|
|
|
|
/* We may end up with a situation where lock_word is 0 but the OS
|
|
fast mutex is still reserved. On FreeBSD the OS does not seem to
|
|
schedule a thread which is constantly calling pthread_mutex_trylock
|
|
(in mutex_test_and_set implementation). Then we could end up
|
|
spinning here indefinitely. The following 'i++' stops this infinite
|
|
spin. */
|
|
|
|
i++;
|
|
|
|
if (i < SYNC_SPIN_ROUNDS) {
|
|
goto spin_loop;
|
|
}
|
|
|
|
sync_array_reserve_cell(sync_primary_wait_array, mutex,
|
|
SYNC_MUTEX, file_name, line, &index);
|
|
|
|
mutex_system_call_count++;
|
|
|
|
/* The memory order of the array reservation and the change in the
|
|
waiters field is important: when we suspend a thread, we first
|
|
reserve the cell and then set waiters field to 1. When threads are
|
|
released in mutex_exit, the waiters field is first set to zero and
|
|
then the event is set to the signaled state. */
|
|
|
|
mutex_set_waiters(mutex, 1);
|
|
|
|
/* Try to reserve still a few times */
|
|
for (i = 0; i < 4; i++) {
|
|
if (mutex_test_and_set(mutex) == 0) {
|
|
/* Succeeded! Free the reserved wait cell */
|
|
|
|
sync_array_free_cell_protected(sync_primary_wait_array,
|
|
index);
|
|
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
mutex_set_debug_info(mutex, file_name, line);
|
|
#endif
|
|
|
|
#ifdef UNIV_SRV_PRINT_LATCH_WAITS
|
|
fprintf(stderr, "Thread %lu spin wait succeeds at 2:"
|
|
" mutex at %p\n",
|
|
(ulong) os_thread_pf(os_thread_get_curr_id()),
|
|
(void*) mutex);
|
|
#endif
|
|
|
|
goto finish_timing;
|
|
|
|
/* Note that in this case we leave the waiters field
|
|
set to 1. We cannot reset it to zero, as we do not
|
|
know if there are other waiters. */
|
|
}
|
|
}
|
|
|
|
/* Now we know that there has been some thread holding the mutex
|
|
after the change in the wait array and the waiters field was made.
|
|
Now there is no risk of infinite wait on the event. */
|
|
|
|
#ifdef UNIV_SRV_PRINT_LATCH_WAITS
|
|
fprintf(stderr,
|
|
"Thread %lu OS wait mutex at %p cfile %s cline %lu rnds %lu\n",
|
|
(ulong) os_thread_pf(os_thread_get_curr_id()), (void*) mutex,
|
|
mutex->cfile_name, (ulong) mutex->cline, (ulong) i);
|
|
#endif
|
|
|
|
mutex_system_call_count++;
|
|
mutex_os_wait_count++;
|
|
|
|
#ifndef UNIV_HOTBACKUP
|
|
mutex->count_os_wait++;
|
|
/* !!!!! Sometimes os_wait can be called without os_thread_yield */
|
|
|
|
if (timed_mutexes == 1 && timer_started==0) {
|
|
ut_usectime(&sec, &ms);
|
|
lstart_time= (ib_longlong)sec * 1000000 + ms;
|
|
timer_started = 1;
|
|
}
|
|
#endif /* !UNIV_HOTBACKUP */
|
|
|
|
sync_array_wait_event(sync_primary_wait_array, index);
|
|
goto mutex_loop;
|
|
|
|
finish_timing:
|
|
#ifndef UNIV_HOTBACKUP
|
|
if (timed_mutexes == 1 && timer_started==1) {
|
|
ut_usectime(&sec, &ms);
|
|
lfinish_time= (ib_longlong)sec * 1000000 + ms;
|
|
|
|
ltime_diff= (ulint) (lfinish_time - lstart_time);
|
|
mutex->lspent_time += ltime_diff;
|
|
|
|
if (mutex->lmax_spent_time < ltime_diff) {
|
|
mutex->lmax_spent_time= ltime_diff;
|
|
}
|
|
}
|
|
#endif /* !UNIV_HOTBACKUP */
|
|
return;
|
|
}
|
|
|
|
/**********************************************************************
|
|
Releases the threads waiting in the primary wait array for this mutex. */
|
|
|
|
void
|
|
mutex_signal_object(
|
|
/*================*/
|
|
mutex_t* mutex) /* in: mutex */
|
|
{
|
|
mutex_set_waiters(mutex, 0);
|
|
|
|
/* The memory order of resetting the waiters field and
|
|
signaling the object is important. See LEMMA 1 above. */
|
|
|
|
sync_array_signal_object(sync_primary_wait_array, mutex);
|
|
}
|
|
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
/**********************************************************************
|
|
Sets the debug information for a reserved mutex. */
|
|
|
|
void
|
|
mutex_set_debug_info(
|
|
/*=================*/
|
|
mutex_t* mutex, /* in: mutex */
|
|
const char* file_name, /* in: file where requested */
|
|
ulint line) /* in: line where requested */
|
|
{
|
|
ut_ad(mutex);
|
|
ut_ad(file_name);
|
|
|
|
sync_thread_add_level(mutex, mutex->level);
|
|
|
|
mutex->file_name = file_name;
|
|
mutex->line = line;
|
|
mutex->thread_id = os_thread_get_curr_id();
|
|
}
|
|
|
|
/**********************************************************************
|
|
Gets the debug information for a reserved mutex. */
|
|
|
|
void
|
|
mutex_get_debug_info(
|
|
/*=================*/
|
|
mutex_t* mutex, /* in: mutex */
|
|
const char** file_name, /* out: file where requested */
|
|
ulint* line, /* out: line where requested */
|
|
os_thread_id_t* thread_id) /* out: id of the thread which owns
|
|
the mutex */
|
|
{
|
|
ut_ad(mutex);
|
|
|
|
*file_name = mutex->file_name;
|
|
*line = mutex->line;
|
|
*thread_id = mutex->thread_id;
|
|
}
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
/**********************************************************************
|
|
Checks that the current thread owns the mutex. Works only in the debug
|
|
version. */
|
|
|
|
ibool
|
|
mutex_own(
|
|
/*======*/
|
|
/* out: TRUE if owns */
|
|
mutex_t* mutex) /* in: mutex */
|
|
{
|
|
ut_a(mutex_validate(mutex));
|
|
|
|
if (mutex_get_lock_word(mutex) != 1) {
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
if (!os_thread_eq(mutex->thread_id, os_thread_get_curr_id())) {
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Prints debug info of currently reserved mutexes. */
|
|
|
|
void
|
|
mutex_list_print_info(void)
|
|
/*=======================*/
|
|
{
|
|
mutex_t* mutex;
|
|
const char* file_name;
|
|
ulint line;
|
|
os_thread_id_t thread_id;
|
|
ulint count = 0;
|
|
|
|
fputs("----------\n"
|
|
"MUTEX INFO\n"
|
|
"----------\n", stderr);
|
|
|
|
mutex_enter(&mutex_list_mutex);
|
|
|
|
mutex = UT_LIST_GET_FIRST(mutex_list);
|
|
|
|
while (mutex != NULL) {
|
|
count++;
|
|
|
|
if (mutex_get_lock_word(mutex) != 0) {
|
|
mutex_get_debug_info(mutex, &file_name, &line,
|
|
&thread_id);
|
|
fprintf(stderr,
|
|
"Locked mutex: addr %p thread %ld"
|
|
" file %s line %ld\n",
|
|
(void*) mutex, os_thread_pf(thread_id),
|
|
file_name, line);
|
|
}
|
|
|
|
mutex = UT_LIST_GET_NEXT(list, mutex);
|
|
}
|
|
|
|
fprintf(stderr, "Total number of mutexes %ld\n", count);
|
|
|
|
mutex_exit(&mutex_list_mutex);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Counts currently reserved mutexes. Works only in the debug version. */
|
|
|
|
ulint
|
|
mutex_n_reserved(void)
|
|
/*==================*/
|
|
{
|
|
mutex_t* mutex;
|
|
ulint count = 0;
|
|
|
|
mutex_enter(&mutex_list_mutex);
|
|
|
|
mutex = UT_LIST_GET_FIRST(mutex_list);
|
|
|
|
while (mutex != NULL) {
|
|
if (mutex_get_lock_word(mutex) != 0) {
|
|
|
|
count++;
|
|
}
|
|
|
|
mutex = UT_LIST_GET_NEXT(list, mutex);
|
|
}
|
|
|
|
mutex_exit(&mutex_list_mutex);
|
|
|
|
ut_a(count >= 1);
|
|
|
|
return(count - 1); /* Subtract one, because this function itself
|
|
was holding one mutex (mutex_list_mutex) */
|
|
}
|
|
|
|
/**********************************************************************
|
|
Returns TRUE if no mutex or rw-lock is currently locked. Works only in
|
|
the debug version. */
|
|
|
|
ibool
|
|
sync_all_freed(void)
|
|
/*================*/
|
|
{
|
|
return(mutex_n_reserved() + rw_lock_n_locked() == 0);
|
|
}
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
|
|
/**********************************************************************
|
|
Gets the value in the nth slot in the thread level arrays. */
|
|
static
|
|
sync_thread_t*
|
|
sync_thread_level_arrays_get_nth(
|
|
/*=============================*/
|
|
/* out: pointer to thread slot */
|
|
ulint n) /* in: slot number */
|
|
{
|
|
ut_ad(n < OS_THREAD_MAX_N);
|
|
|
|
return(sync_thread_level_arrays + n);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Looks for the thread slot for the calling thread. */
|
|
static
|
|
sync_thread_t*
|
|
sync_thread_level_arrays_find_slot(void)
|
|
/*====================================*/
|
|
/* out: pointer to thread slot, NULL if not found */
|
|
|
|
{
|
|
sync_thread_t* slot;
|
|
os_thread_id_t id;
|
|
ulint i;
|
|
|
|
id = os_thread_get_curr_id();
|
|
|
|
for (i = 0; i < OS_THREAD_MAX_N; i++) {
|
|
|
|
slot = sync_thread_level_arrays_get_nth(i);
|
|
|
|
if (slot->levels && os_thread_eq(slot->id, id)) {
|
|
|
|
return(slot);
|
|
}
|
|
}
|
|
|
|
return(NULL);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Looks for an unused thread slot. */
|
|
static
|
|
sync_thread_t*
|
|
sync_thread_level_arrays_find_free(void)
|
|
/*====================================*/
|
|
/* out: pointer to thread slot */
|
|
|
|
{
|
|
sync_thread_t* slot;
|
|
ulint i;
|
|
|
|
for (i = 0; i < OS_THREAD_MAX_N; i++) {
|
|
|
|
slot = sync_thread_level_arrays_get_nth(i);
|
|
|
|
if (slot->levels == NULL) {
|
|
|
|
return(slot);
|
|
}
|
|
}
|
|
|
|
return(NULL);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Gets the value in the nth slot in the thread level array. */
|
|
static
|
|
sync_level_t*
|
|
sync_thread_levels_get_nth(
|
|
/*=======================*/
|
|
/* out: pointer to level slot */
|
|
sync_level_t* arr, /* in: pointer to level array for an OS
|
|
thread */
|
|
ulint n) /* in: slot number */
|
|
{
|
|
ut_ad(n < SYNC_THREAD_N_LEVELS);
|
|
|
|
return(arr + n);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Checks if all the level values stored in the level array are greater than
|
|
the given limit. */
|
|
static
|
|
ibool
|
|
sync_thread_levels_g(
|
|
/*=================*/
|
|
/* out: TRUE if all greater */
|
|
sync_level_t* arr, /* in: pointer to level array for an OS
|
|
thread */
|
|
ulint limit) /* in: level limit */
|
|
{
|
|
sync_level_t* slot;
|
|
rw_lock_t* lock;
|
|
mutex_t* mutex;
|
|
ulint i;
|
|
|
|
for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) {
|
|
|
|
slot = sync_thread_levels_get_nth(arr, i);
|
|
|
|
if (slot->latch != NULL) {
|
|
if (slot->level <= limit) {
|
|
|
|
lock = slot->latch;
|
|
mutex = slot->latch;
|
|
|
|
fprintf(stderr,
|
|
"InnoDB error: sync levels should be"
|
|
" > %lu but a level is %lu\n",
|
|
(ulong) limit, (ulong) slot->level);
|
|
|
|
if (mutex->magic_n == MUTEX_MAGIC_N) {
|
|
fprintf(stderr,
|
|
"Mutex created at %s %lu\n",
|
|
mutex->cfile_name,
|
|
(ulong) mutex->cline);
|
|
|
|
if (mutex_get_lock_word(mutex) != 0) {
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
const char* file_name;
|
|
ulint line;
|
|
os_thread_id_t thread_id;
|
|
|
|
mutex_get_debug_info(
|
|
mutex, &file_name,
|
|
&line, &thread_id);
|
|
|
|
fprintf(stderr,
|
|
"InnoDB: Locked mutex:"
|
|
" addr %p thread %ld"
|
|
" file %s line %ld\n",
|
|
(void*) mutex,
|
|
os_thread_pf(
|
|
thread_id),
|
|
file_name,
|
|
(ulong) line);
|
|
#else /* UNIV_SYNC_DEBUG */
|
|
fprintf(stderr,
|
|
"InnoDB: Locked mutex:"
|
|
" addr %p\n",
|
|
(void*) mutex);
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
} else {
|
|
fputs("Not locked\n", stderr);
|
|
}
|
|
} else {
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
rw_lock_print(lock);
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
}
|
|
}
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Checks if the level value is stored in the level array. */
|
|
static
|
|
ibool
|
|
sync_thread_levels_contain(
|
|
/*=======================*/
|
|
/* out: TRUE if stored */
|
|
sync_level_t* arr, /* in: pointer to level array for an OS
|
|
thread */
|
|
ulint level) /* in: level */
|
|
{
|
|
sync_level_t* slot;
|
|
ulint i;
|
|
|
|
for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) {
|
|
|
|
slot = sync_thread_levels_get_nth(arr, i);
|
|
|
|
if (slot->latch != NULL) {
|
|
if (slot->level == level) {
|
|
|
|
return(TRUE);
|
|
}
|
|
}
|
|
}
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Checks that the level array for the current thread is empty. */
|
|
|
|
ibool
|
|
sync_thread_levels_empty_gen(
|
|
/*=========================*/
|
|
/* out: TRUE if empty except the
|
|
exceptions specified below */
|
|
ibool dict_mutex_allowed) /* in: TRUE if dictionary mutex is
|
|
allowed to be owned by the thread,
|
|
also purge_is_running mutex is
|
|
allowed */
|
|
{
|
|
sync_level_t* arr;
|
|
sync_thread_t* thread_slot;
|
|
sync_level_t* slot;
|
|
ulint i;
|
|
|
|
if (!sync_order_checks_on) {
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
mutex_enter(&sync_thread_mutex);
|
|
|
|
thread_slot = sync_thread_level_arrays_find_slot();
|
|
|
|
if (thread_slot == NULL) {
|
|
|
|
mutex_exit(&sync_thread_mutex);
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
arr = thread_slot->levels;
|
|
|
|
for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) {
|
|
|
|
slot = sync_thread_levels_get_nth(arr, i);
|
|
|
|
if (slot->latch != NULL
|
|
&& (!dict_mutex_allowed
|
|
|| (slot->level != SYNC_DICT
|
|
&& slot->level != SYNC_DICT_OPERATION))) {
|
|
|
|
mutex_exit(&sync_thread_mutex);
|
|
ut_error;
|
|
|
|
return(FALSE);
|
|
}
|
|
}
|
|
|
|
mutex_exit(&sync_thread_mutex);
|
|
|
|
return(TRUE);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Checks that the level array for the current thread is empty. */
|
|
|
|
ibool
|
|
sync_thread_levels_empty(void)
|
|
/*==========================*/
|
|
/* out: TRUE if empty */
|
|
{
|
|
return(sync_thread_levels_empty_gen(FALSE));
|
|
}
|
|
|
|
/**********************************************************************
|
|
Adds a latch and its level in the thread level array. Allocates the memory
|
|
for the array if called first time for this OS thread. Makes the checks
|
|
against other latch levels stored in the array for this thread. */
|
|
|
|
void
|
|
sync_thread_add_level(
|
|
/*==================*/
|
|
void* latch, /* in: pointer to a mutex or an rw-lock */
|
|
ulint level) /* in: level in the latching order; if
|
|
SYNC_LEVEL_VARYING, nothing is done */
|
|
{
|
|
sync_level_t* array;
|
|
sync_level_t* slot;
|
|
sync_thread_t* thread_slot;
|
|
ulint i;
|
|
|
|
if (!sync_order_checks_on) {
|
|
|
|
return;
|
|
}
|
|
|
|
if ((latch == (void*)&sync_thread_mutex)
|
|
|| (latch == (void*)&mutex_list_mutex)
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
|| (latch == (void*)&rw_lock_debug_mutex)
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
|| (latch == (void*)&rw_lock_list_mutex)) {
|
|
|
|
return;
|
|
}
|
|
|
|
if (level == SYNC_LEVEL_VARYING) {
|
|
|
|
return;
|
|
}
|
|
|
|
mutex_enter(&sync_thread_mutex);
|
|
|
|
thread_slot = sync_thread_level_arrays_find_slot();
|
|
|
|
if (thread_slot == NULL) {
|
|
/* We have to allocate the level array for a new thread */
|
|
array = ut_malloc(sizeof(sync_level_t) * SYNC_THREAD_N_LEVELS);
|
|
|
|
thread_slot = sync_thread_level_arrays_find_free();
|
|
|
|
thread_slot->id = os_thread_get_curr_id();
|
|
thread_slot->levels = array;
|
|
|
|
for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) {
|
|
|
|
slot = sync_thread_levels_get_nth(array, i);
|
|
|
|
slot->latch = NULL;
|
|
}
|
|
}
|
|
|
|
array = thread_slot->levels;
|
|
|
|
/* NOTE that there is a problem with _NODE and _LEAF levels: if the
|
|
B-tree height changes, then a leaf can change to an internal node
|
|
or the other way around. We do not know at present if this can cause
|
|
unnecessary assertion failures below. */
|
|
|
|
switch (level) {
|
|
case SYNC_NO_ORDER_CHECK:
|
|
case SYNC_EXTERN_STORAGE:
|
|
case SYNC_TREE_NODE_FROM_HASH:
|
|
/* Do no order checking */
|
|
break;
|
|
case SYNC_MEM_POOL:
|
|
ut_a(sync_thread_levels_g(array, SYNC_MEM_POOL));
|
|
break;
|
|
case SYNC_MEM_HASH:
|
|
ut_a(sync_thread_levels_g(array, SYNC_MEM_HASH));
|
|
break;
|
|
case SYNC_RECV:
|
|
ut_a(sync_thread_levels_g(array, SYNC_RECV));
|
|
break;
|
|
case SYNC_WORK_QUEUE:
|
|
ut_a(sync_thread_levels_g(array, SYNC_WORK_QUEUE));
|
|
break;
|
|
case SYNC_LOG:
|
|
ut_a(sync_thread_levels_g(array, SYNC_LOG));
|
|
break;
|
|
case SYNC_THR_LOCAL:
|
|
ut_a(sync_thread_levels_g(array, SYNC_THR_LOCAL));
|
|
break;
|
|
case SYNC_ANY_LATCH:
|
|
ut_a(sync_thread_levels_g(array, SYNC_ANY_LATCH));
|
|
break;
|
|
case SYNC_TRX_SYS_HEADER:
|
|
ut_a(sync_thread_levels_g(array, SYNC_TRX_SYS_HEADER));
|
|
break;
|
|
case SYNC_DOUBLEWRITE:
|
|
ut_a(sync_thread_levels_g(array, SYNC_DOUBLEWRITE));
|
|
break;
|
|
case SYNC_BUF_BLOCK:
|
|
ut_a((sync_thread_levels_contain(array, SYNC_BUF_POOL)
|
|
&& sync_thread_levels_g(array, SYNC_BUF_BLOCK - 1))
|
|
|| sync_thread_levels_g(array, SYNC_BUF_BLOCK));
|
|
break;
|
|
case SYNC_BUF_POOL:
|
|
ut_a(sync_thread_levels_g(array, SYNC_BUF_POOL));
|
|
break;
|
|
case SYNC_SEARCH_SYS:
|
|
ut_a(sync_thread_levels_g(array, SYNC_SEARCH_SYS));
|
|
break;
|
|
case SYNC_TRX_LOCK_HEAP:
|
|
ut_a(sync_thread_levels_g(array, SYNC_TRX_LOCK_HEAP));
|
|
break;
|
|
case SYNC_REC_LOCK:
|
|
ut_a((sync_thread_levels_contain(array, SYNC_KERNEL)
|
|
&& sync_thread_levels_g(array, SYNC_REC_LOCK - 1))
|
|
|| sync_thread_levels_g(array, SYNC_REC_LOCK));
|
|
break;
|
|
case SYNC_KERNEL:
|
|
ut_a(sync_thread_levels_g(array, SYNC_KERNEL));
|
|
break;
|
|
case SYNC_IBUF_BITMAP:
|
|
ut_a((sync_thread_levels_contain(array, SYNC_IBUF_BITMAP_MUTEX)
|
|
&& sync_thread_levels_g(array, SYNC_IBUF_BITMAP - 1))
|
|
|| sync_thread_levels_g(array, SYNC_IBUF_BITMAP));
|
|
break;
|
|
case SYNC_IBUF_BITMAP_MUTEX:
|
|
ut_a(sync_thread_levels_g(array, SYNC_IBUF_BITMAP_MUTEX));
|
|
break;
|
|
case SYNC_FSP_PAGE:
|
|
ut_a(sync_thread_levels_contain(array, SYNC_FSP));
|
|
break;
|
|
case SYNC_FSP:
|
|
ut_a(sync_thread_levels_contain(array, SYNC_FSP)
|
|
|| sync_thread_levels_g(array, SYNC_FSP));
|
|
break;
|
|
case SYNC_TRX_UNDO_PAGE:
|
|
ut_a(sync_thread_levels_contain(array, SYNC_TRX_UNDO)
|
|
|| sync_thread_levels_contain(array, SYNC_RSEG)
|
|
|| sync_thread_levels_contain(array, SYNC_PURGE_SYS)
|
|
|| sync_thread_levels_g(array, SYNC_TRX_UNDO_PAGE));
|
|
break;
|
|
case SYNC_RSEG_HEADER:
|
|
ut_a(sync_thread_levels_contain(array, SYNC_RSEG));
|
|
break;
|
|
case SYNC_RSEG_HEADER_NEW:
|
|
ut_a(sync_thread_levels_contain(array, SYNC_KERNEL)
|
|
&& sync_thread_levels_contain(array, SYNC_FSP_PAGE));
|
|
break;
|
|
case SYNC_RSEG:
|
|
ut_a(sync_thread_levels_g(array, SYNC_RSEG));
|
|
break;
|
|
case SYNC_TRX_UNDO:
|
|
ut_a(sync_thread_levels_g(array, SYNC_TRX_UNDO));
|
|
break;
|
|
case SYNC_PURGE_LATCH:
|
|
ut_a(sync_thread_levels_g(array, SYNC_PURGE_LATCH));
|
|
break;
|
|
case SYNC_PURGE_SYS:
|
|
ut_a(sync_thread_levels_g(array, SYNC_PURGE_SYS));
|
|
break;
|
|
case SYNC_TREE_NODE:
|
|
ut_a(sync_thread_levels_contain(array, SYNC_INDEX_TREE)
|
|
|| sync_thread_levels_g(array, SYNC_TREE_NODE - 1));
|
|
break;
|
|
case SYNC_TREE_NODE_NEW:
|
|
ut_a(sync_thread_levels_contain(array, SYNC_FSP_PAGE)
|
|
|| sync_thread_levels_contain(array, SYNC_IBUF_MUTEX));
|
|
break;
|
|
case SYNC_INDEX_TREE:
|
|
ut_a((sync_thread_levels_contain(array, SYNC_IBUF_MUTEX)
|
|
&& sync_thread_levels_contain(array, SYNC_FSP)
|
|
&& sync_thread_levels_g(array, SYNC_FSP_PAGE - 1))
|
|
|| sync_thread_levels_g(array, SYNC_TREE_NODE - 1));
|
|
break;
|
|
case SYNC_IBUF_MUTEX:
|
|
ut_a(sync_thread_levels_g(array, SYNC_FSP_PAGE - 1));
|
|
break;
|
|
case SYNC_IBUF_PESS_INSERT_MUTEX:
|
|
ut_a(sync_thread_levels_g(array, SYNC_FSP - 1)
|
|
&& !sync_thread_levels_contain(array, SYNC_IBUF_MUTEX));
|
|
break;
|
|
case SYNC_IBUF_HEADER:
|
|
ut_a(sync_thread_levels_g(array, SYNC_FSP - 1)
|
|
&& !sync_thread_levels_contain(array, SYNC_IBUF_MUTEX)
|
|
&& !sync_thread_levels_contain(
|
|
array, SYNC_IBUF_PESS_INSERT_MUTEX));
|
|
break;
|
|
case SYNC_DICT_AUTOINC_MUTEX:
|
|
ut_a(sync_thread_levels_g(array, SYNC_DICT_AUTOINC_MUTEX));
|
|
break;
|
|
case SYNC_DICT_OPERATION:
|
|
ut_a(sync_thread_levels_g(array, SYNC_DICT_OPERATION));
|
|
break;
|
|
case SYNC_DICT_HEADER:
|
|
ut_a(sync_thread_levels_g(array, SYNC_DICT_HEADER));
|
|
break;
|
|
case SYNC_DICT:
|
|
#ifdef UNIV_DEBUG
|
|
ut_a(buf_debug_prints
|
|
|| sync_thread_levels_g(array, SYNC_DICT));
|
|
#else /* UNIV_DEBUG */
|
|
ut_a(sync_thread_levels_g(array, SYNC_DICT));
|
|
#endif /* UNIV_DEBUG */
|
|
break;
|
|
default:
|
|
ut_error;
|
|
}
|
|
|
|
for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) {
|
|
|
|
slot = sync_thread_levels_get_nth(array, i);
|
|
|
|
if (slot->latch == NULL) {
|
|
slot->latch = latch;
|
|
slot->level = level;
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
ut_a(i < SYNC_THREAD_N_LEVELS);
|
|
|
|
mutex_exit(&sync_thread_mutex);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Removes a latch from the thread level array if it is found there. */
|
|
|
|
ibool
|
|
sync_thread_reset_level(
|
|
/*====================*/
|
|
/* out: TRUE if found from the array; it is an error
|
|
if the latch is not found */
|
|
void* latch) /* in: pointer to a mutex or an rw-lock */
|
|
{
|
|
sync_level_t* array;
|
|
sync_level_t* slot;
|
|
sync_thread_t* thread_slot;
|
|
ulint i;
|
|
|
|
if (!sync_order_checks_on) {
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
if ((latch == (void*)&sync_thread_mutex)
|
|
|| (latch == (void*)&mutex_list_mutex)
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
|| (latch == (void*)&rw_lock_debug_mutex)
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
|| (latch == (void*)&rw_lock_list_mutex)) {
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
mutex_enter(&sync_thread_mutex);
|
|
|
|
thread_slot = sync_thread_level_arrays_find_slot();
|
|
|
|
if (thread_slot == NULL) {
|
|
|
|
ut_error;
|
|
|
|
mutex_exit(&sync_thread_mutex);
|
|
return(FALSE);
|
|
}
|
|
|
|
array = thread_slot->levels;
|
|
|
|
for (i = 0; i < SYNC_THREAD_N_LEVELS; i++) {
|
|
|
|
slot = sync_thread_levels_get_nth(array, i);
|
|
|
|
if (slot->latch == latch) {
|
|
slot->latch = NULL;
|
|
|
|
mutex_exit(&sync_thread_mutex);
|
|
|
|
return(TRUE);
|
|
}
|
|
}
|
|
|
|
ut_error;
|
|
|
|
mutex_exit(&sync_thread_mutex);
|
|
|
|
return(FALSE);
|
|
}
|
|
|
|
/**********************************************************************
|
|
Initializes the synchronization data structures. */
|
|
|
|
void
|
|
sync_init(void)
|
|
/*===========*/
|
|
{
|
|
sync_thread_t* thread_slot;
|
|
ulint i;
|
|
|
|
ut_a(sync_initialized == FALSE);
|
|
|
|
sync_initialized = TRUE;
|
|
|
|
/* Create the primary system wait array which is protected by an OS
|
|
mutex */
|
|
|
|
sync_primary_wait_array = sync_array_create(OS_THREAD_MAX_N,
|
|
SYNC_ARRAY_OS_MUTEX);
|
|
|
|
/* Create the thread latch level array where the latch levels
|
|
are stored for each OS thread */
|
|
|
|
sync_thread_level_arrays = ut_malloc(OS_THREAD_MAX_N
|
|
* sizeof(sync_thread_t));
|
|
for (i = 0; i < OS_THREAD_MAX_N; i++) {
|
|
|
|
thread_slot = sync_thread_level_arrays_get_nth(i);
|
|
thread_slot->levels = NULL;
|
|
}
|
|
|
|
/* Init the mutex list and create the mutex to protect it. */
|
|
|
|
UT_LIST_INIT(mutex_list);
|
|
mutex_create(&mutex_list_mutex, SYNC_NO_ORDER_CHECK);
|
|
|
|
mutex_create(&sync_thread_mutex, SYNC_NO_ORDER_CHECK);
|
|
|
|
/* Init the rw-lock list and create the mutex to protect it. */
|
|
|
|
UT_LIST_INIT(rw_lock_list);
|
|
mutex_create(&rw_lock_list_mutex, SYNC_NO_ORDER_CHECK);
|
|
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
mutex_create(&rw_lock_debug_mutex, SYNC_NO_ORDER_CHECK);
|
|
|
|
rw_lock_debug_event = os_event_create(NULL);
|
|
rw_lock_debug_waiters = FALSE;
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
}
|
|
|
|
/**********************************************************************
|
|
Frees the resources in InnoDB's own synchronization data structures. Use
|
|
os_sync_free() after calling this. */
|
|
|
|
void
|
|
sync_close(void)
|
|
/*===========*/
|
|
{
|
|
mutex_t* mutex;
|
|
|
|
sync_array_free(sync_primary_wait_array);
|
|
|
|
mutex = UT_LIST_GET_FIRST(mutex_list);
|
|
|
|
while (mutex) {
|
|
mutex_free(mutex);
|
|
mutex = UT_LIST_GET_FIRST(mutex_list);
|
|
}
|
|
|
|
mutex_free(&mutex_list_mutex);
|
|
mutex_free(&sync_thread_mutex);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Prints wait info of the sync system. */
|
|
|
|
void
|
|
sync_print_wait_info(
|
|
/*=================*/
|
|
FILE* file) /* in: file where to print */
|
|
{
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
fprintf(stderr, "Mutex exits %lu, rws exits %lu, rwx exits %lu\n",
|
|
mutex_exit_count, rw_s_exit_count, rw_x_exit_count);
|
|
#endif
|
|
|
|
fprintf(file,
|
|
"Mutex spin waits %lu, rounds %lu, OS waits %lu\n"
|
|
"RW-shared spins %lu, OS waits %lu;"
|
|
" RW-excl spins %lu, OS waits %lu\n",
|
|
(ulong) mutex_spin_wait_count,
|
|
(ulong) mutex_spin_round_count,
|
|
(ulong) mutex_os_wait_count,
|
|
(ulong) rw_s_spin_wait_count,
|
|
(ulong) rw_s_os_wait_count,
|
|
(ulong) rw_x_spin_wait_count,
|
|
(ulong) rw_x_os_wait_count);
|
|
}
|
|
|
|
/***********************************************************************
|
|
Prints info of the sync system. */
|
|
|
|
void
|
|
sync_print(
|
|
/*=======*/
|
|
FILE* file) /* in: file where to print */
|
|
{
|
|
#ifdef UNIV_SYNC_DEBUG
|
|
mutex_list_print_info();
|
|
|
|
rw_lock_list_print_info();
|
|
#endif /* UNIV_SYNC_DEBUG */
|
|
|
|
sync_array_print_info(file, sync_primary_wait_array);
|
|
|
|
sync_print_wait_info(file);
|
|
}
|