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Fixes the following bugs: Bug #30706: SQL thread on slave is allowed to block client queries when slave load is high Add (innodb|innobase|srv)_replication_delay MySQL config parameter. Bug #30888: Innodb table + stored procedure + row deletion = server crash While adding code for the low level read of the AUTOINC value from the index, the case for MEDIUM ints which are 3 bytes was missed triggering an assertion. Bug #30907: Regression: "--innodb_autoinc_lock_mode=0" (off) not same as older releases We don't rely on *first_value to be 0 when checking whether get_auto_increment() has been invoked for the first time in a multi-row INSERT. We instead use trx_t::n_autoinc_rows. Initialize trx::n_autoinc_rows inside ha_innobase::start_stmt() too. Bug #31444: "InnoDB: Error: MySQL is freeing a thd" in innodb_mysql.test ha_innobase::external_lock(): Update prebuilt->mysql_has_locked and trx->n_mysql_tables_in_use only after row_lock_table_for_mysql() returns DB_SUCCESS. A timeout on LOCK TABLES would lead to an inconsistent state, which would cause trx_free() to print a warning. Bug #31494: innodb + 5.1 + read committed crash, assertion Set an error code when a deadlock occurs in semi-consistent read. mysql-test/r/innodb.result: Apply snapshot innodb-5.1-ss1989 Also, a test is moved into the new innodb_autoinc_lock_mode_zero test, because it depends on a non-default setting for a read-only variable. Revision r1821: Merge a change from MySQL AB: ChangeSet@1.2536.50.1 2007-08-02 12:45:56-07:00 igor@mysql.com Fixed bug#28404. This patch adds cost estimation for the queries with ORDER BY / GROUP BY and LIMIT. If there was a ref/range access to the table whose rows were required to be ordered in the result set the optimizer always employed this access though a scan by a different index that was compatible with the required order could be cheaper to produce the first L rows of the result set. Now for such queries the optimizer makes a choice between the cheapest ref/range accesses not compatible with the given order and index scans compatible with it. innodb.result: Adjusted results for test cases affected fy the fix for bug #28404. Revision r1781: Fix a test case that was broken after Bug#16979 fix. See r1645 and r1735. The variable used in the tests below was introduced in r1735. Revision r1792: innodb.result: Revert r1655, which should have been reverted as part of r1781. Revision r1843: Add test for Bug# 21409, the actual bug was fixed in r1334. mysql-test/t/innodb.test: Apply snapshot innodb-5.1-ss1989 Also, a test is moved into the new innodb_autoinc_lock_mode_zero test, because it depends on a non-default setting for a read-only variable. Revision r1781: Fix a test case that was broken after Bug#16979 fix. See r1645 and r1735. The variable used in the tests below was introduced in r1735. Revision r1843: Add test for Bug# 21409, the actual bug was fixed in r1334. storage/innobase/buf/buf0lru.c: Apply snapshot innodb-5.1-ss1989 Revision r1819: Merge r1815:1817 from branches/zip: Improve Valgrind instrumentation. UNIV_MEM_ASSERT_RW(): New macro, to check that the contents of a memory area is defined. UNIV_MEM_ASSERT_W(): New macro, to check that a memory area is writable. UNIV_MEM_ASSERT_AND_FREE(): New macro, to check that the memory is writable before declaring it free (unwritable). This replaces UNIV_MEM_FREE() in many places. mem_init_buf(): Check that the memory is writable, and declare it undefined. mem_erase_buf(): Check that the memory is writable, and declare it freed. storage/innobase/dict/dict0dict.c: Apply snapshot innodb-5.1-ss1989 Revision r1894: Add debug lock checks to autoinc functions. Add lock guards around an invocation of dict_table_autoinc_initialize(). storage/innobase/dict/dict0load.c: Apply snapshot innodb-5.1-ss1989 Revision r1974: Prevent loading of tables that have unsupported features most notably FTS indexes. storage/innobase/handler/ha_innodb.cc: Apply snapshot innodb-5.1-ss1989 Revision r1850: Implement this feature request: http://bugs.mysql.com/30706 * Add a function that returns the number of microseconds since epoch - ut_time_us(). * Add (innodb|innobase|srv)_replication_delay MySQL config parameter. * Add UT_WAIT_FOR() macro that waits for a specified condition to occur until a timeout elapses. * Using all of the above, handle the replication thread specially in srv_conc_enter_innodb(). Approved by: Heikki Revision r1887: Merge changes from MySQL AB: ChangeSet@1.2528.115.25 2007-08-27 18:18:14-06:00 tsmith@hindu.god Fix some Windows compiler warnings. dict0mem.c: Fix compiler warning with a cast. ha_innodb.cc: Change type to fix a compiler warning. Revision r1809: ha_innobase::external_lock(): Update prebuilt->mysql_has_locked and trx->n_mysql_tables_in_use only after row_lock_table_for_mysql() returns DB_SUCCESS. A timeout on LOCK TABLES would lead to an inconsistent state, which would cause trx_free() to print a warning. This was later reported as Bug #31444. Revision r1833: Add /*== ... === */ decoration that was missing around some auto-inc functions. Add a missing comment, fix the length of a decoration. Initialize the *value out parameter in ha_innobase::innobase_get_auto_increment(). Revision r1866: Revert r1850 as MySQL did not approve the addition. log for r1850: Implement this feature request: http://bugs.mysql.com/30706 * Add a function that returns the number of microseconds since epoch - ut_time_us(). * Add (innodb|innobase|srv)_replication_delay MySQL config parameter. * Add UT_WAIT_FOR() macro that waits for a specified condition to occur until a timeout elapses. * Using all of the above, handle the replication thread specially in srv_conc_enter_innodb(). Revision r1846: Add config option innodb_use_adaptive_hash_indexes to enable/disable adaptive hash indexes. It is enabled by default (no change in default behavior). Approved by: Marko Revision r1974: Prevent loading of tables that have unsupported features most notably FTS indexes. Revision r1829: Add assertion to enforce check of an implicit invariant and add comment about retry of autoinc read semantics. We always reread the table's autoinc counter after attempting to initialize it i.e., we want to guarantee that a read of autoinc valus that is returned to the caller is always covered by the AUTOINC locking mechanism. Revision r1787: Move the prototype of innobase_print_identifier() from ut0ut.c to ha_prototypes.h. Enclose the definitions in ha_prototypes.h in #ifndef UNIV_HOTBACKUP. Revision r1888: Merge a change from MySQL AB: ChangeSet@1.2528.115.30 2007-08-28 10:17:15-06:00 tsmith@hindu.god Fix another compiler warning on Windows in InnoDB. ha_innodb.cc: Fix compiler warning: ::get_auto_increment takes a ulonglong for nb_desired_values, but InnoDB's trx struct stores it as a ulint (unsigned long). Probably harmless, as a single statement won't be asking for more than 2^32 rows. Revision r1987: Bug fix: The problem was that when write_row() attempted to update the max autoinc value, and if it was rolled back because of a deadlock, the deadlock error (transaction rollback) was not being propagated back to MySQL. Revision r1889: Merge a change from MySQL AB: ChangeSet@1.2560 2007-09-21 10:15:16+02:00 gkodinov@local ha_innodb.cc: fixed type conversion warnings revealed by bug 30639 Revision r1989: Suppress printing of deadlock errors while reading the autoinc value. DB_DEADLOCK errors are part of normal processing and excessive printing of these error messages could be disconcerting for users. Revision r1828: Fix two bugs: Bug# 30907: We don't rely on *first_value to be 0 when checking whether get_auto_increment() has been invoked for the first time in a multi-row INSERT. We instead use trx_t::n_autoinc_rows. Initialize trx::n_autoinc_rows inside ha_innobase::start_stmt() too. Bug# 30888: While adding code for the low level read of the AUTOINC value from the index, the case for MEDIUM ints which are 3 bytes was missed triggering an assertion. storage/innobase/handler/ha_innodb.h: Apply snapshot innodb-5.1-ss1989 Revision r1844: Remove the prototypes of some functions inside #if 0. The function definitions were removed in r1746. storage/innobase/ibuf/ibuf0ibuf.c: Apply snapshot innodb-5.1-ss1989 Revision r1965: ibuf_insert_to_index_page(): Fix typos in diagnostic output. storage/innobase/include/db0err.h: Apply snapshot innodb-5.1-ss1989 Revision r1974: Prevent loading of tables that have unsupported features most notably FTS indexes. storage/innobase/include/ha_prototypes.h: Apply snapshot innodb-5.1-ss1989 Revision r1787: Move the prototype of innobase_print_identifier() from ut0ut.c to ha_prototypes.h. Enclose the definitions in ha_prototypes.h in #ifndef UNIV_HOTBACKUP. storage/innobase/include/mach0data.h: Apply snapshot innodb-5.1-ss1989 Revision r1779: Fix a bug that handles the case where the host specific byte order matches the InnoDB storage byte order, which is big-endian. storage/innobase/include/mach0data.ic: Apply snapshot innodb-5.1-ss1989 Revision r1779: Fix a bug that handles the case where the host specific byte order matches the InnoDB storage byte order, which is big-endian. storage/innobase/include/mem0dbg.h: Apply snapshot innodb-5.1-ss1989 Revision r1830: Improve memory debugging. This is follow-up to r1819. mem_heap_validate(): Compile this function also if UNIV_MEM_DEBUG is defined. Previously, this function was only compiled with UNIV_DEBUG. mem_heap_free_heap_top(): Flag the memory allocated, not freed, for Valgrind. Otherwise, Valgrind would complain on the second call of mem_heap_empty(). UNIV_MEM_ASSERT_RW(), UNIV_MEM_ASSERT_W(): Display additional diagnostics for failed Valgrind checks. storage/innobase/include/mem0mem.ic: Apply snapshot innodb-5.1-ss1989 Revision r1830: Improve memory debugging. This is follow-up to r1819. mem_heap_validate(): Compile this function also if UNIV_MEM_DEBUG is defined. Previously, this function was only compiled with UNIV_DEBUG. mem_heap_free_heap_top(): Flag the memory allocated, not freed, for Valgrind. Otherwise, Valgrind would complain on the second call of mem_heap_empty(). UNIV_MEM_ASSERT_RW(), UNIV_MEM_ASSERT_W(): Display additional diagnostics for failed Valgrind checks. Revision r1937: mem_heap_free_top(): Remove a bogus Valgrind warning. Revision r1819: Merge r1815:1817 from branches/zip: Improve Valgrind instrumentation. UNIV_MEM_ASSERT_RW(): New macro, to check that the contents of a memory area is defined. UNIV_MEM_ASSERT_W(): New macro, to check that a memory area is writable. UNIV_MEM_ASSERT_AND_FREE(): New macro, to check that the memory is writable before declaring it free (unwritable). This replaces UNIV_MEM_FREE() in many places. mem_init_buf(): Check that the memory is writable, and declare it undefined. mem_erase_buf(): Check that the memory is writable, and declare it freed. storage/innobase/include/rem0rec.ic: Apply snapshot innodb-5.1-ss1989 Revision r1918: Improve Valgrind instrumentation. rec_offs_set_n_alloc(): Use UNIV_MEM_ASSERT_AND_ALLOC(). UNIV_MEM_ASSERT_AND_ALLOC(): New directive, similar to UNIV_MEM_ASSERT_AND_FREE(). storage/innobase/include/row0mysql.h: Apply snapshot innodb-5.1-ss1989 Revision r1783: Correct the function comments of row_create_table_for_mysql() and row_drop_table_for_mysql(). storage/innobase/include/sync0rw.h: Apply snapshot innodb-5.1-ss1989 Revision r1757: Enclose rw_lock_validate() in #ifdef UNIV_DEBUG. It is only called by debug assertions. storage/innobase/include/univ.i: Apply snapshot innodb-5.1-ss1989 Revision r1827: Merge r1826 from branches/zip: UNIV_MEM_ASSERT_AND_FREE(): Use UNIV_MEM_ASSERT_W() instead of UNIV_MEM_ASSERT_RW(). The memory area need not be initialized. This mistake was made in r1815. Revision r1918: Improve Valgrind instrumentation. rec_offs_set_n_alloc(): Use UNIV_MEM_ASSERT_AND_ALLOC(). UNIV_MEM_ASSERT_AND_ALLOC(): New directive, similar to UNIV_MEM_ASSERT_AND_FREE(). Revision r1830: Improve memory debugging. This is follow-up to r1819. mem_heap_validate(): Compile this function also if UNIV_MEM_DEBUG is defined. Previously, this function was only compiled with UNIV_DEBUG. mem_heap_free_heap_top(): Flag the memory allocated, not freed, for Valgrind. Otherwise, Valgrind would complain on the second call of mem_heap_empty(). UNIV_MEM_ASSERT_RW(), UNIV_MEM_ASSERT_W(): Display additional diagnostics for failed Valgrind checks. Revision r1819: Merge r1815:1817 from branches/zip: Improve Valgrind instrumentation. UNIV_MEM_ASSERT_RW(): New macro, to check that the contents of a memory area is defined. UNIV_MEM_ASSERT_W(): New macro, to check that a memory area is writable. UNIV_MEM_ASSERT_AND_FREE(): New macro, to check that the memory is writable before declaring it free (unwritable). This replaces UNIV_MEM_FREE() in many places. mem_init_buf(): Check that the memory is writable, and declare it undefined. mem_erase_buf(): Check that the memory is writable, and declare it freed. Revision r1948: UNIV_MEM_ASSERT_RW(), UNIV_MEM_ASSERT_W(): Display also __FILE__ and __LINE__ when these Valgrind checks fail. storage/innobase/include/ut0ut.h: Apply snapshot innodb-5.1-ss1989 Revision r1850: Implement this feature request: http://bugs.mysql.com/30706 * Add a function that returns the number of microseconds since epoch - ut_time_us(). * Add (innodb|innobase|srv)_replication_delay MySQL config parameter. * Add UT_WAIT_FOR() macro that waits for a specified condition to occur until a timeout elapses. * Using all of the above, handle the replication thread specially in srv_conc_enter_innodb(). Approved by: Heikki Revision r1862: Add ut_snprintf() function. On Windows this needs to be implemented using auxiliary functions because there is no snprintf-variant on Windows that behaves exactly as specified in the standard: * Always return the number of characters that would have been printed if the size were unlimited (not including the final `\0'). * Always '\0'-terminate the result * Do not touch the buffer if size=0, only return the number of characters that would have been printed. Can be used to estimate the size needed and to allocate it dynamically. See http://www.freebsd.org/cgi/query-pr.cgi?pr=87260 for the reason why 2 ap variables are used. Approved by: Heikki Revision r1866: Revert r1850 as MySQL did not approve the addition. log for r1850: Implement this feature request: http://bugs.mysql.com/30706 * Add a function that returns the number of microseconds since epoch - ut_time_us(). * Add (innodb|innobase|srv)_replication_delay MySQL config parameter. * Add UT_WAIT_FOR() macro that waits for a specified condition to occur until a timeout elapses. * Using all of the above, handle the replication thread specially in srv_conc_enter_innodb(). storage/innobase/mem/mem0dbg.c: Apply snapshot innodb-5.1-ss1989 Revision r1830: Improve memory debugging. This is follow-up to r1819. mem_heap_validate(): Compile this function also if UNIV_MEM_DEBUG is defined. Previously, this function was only compiled with UNIV_DEBUG. mem_heap_free_heap_top(): Flag the memory allocated, not freed, for Valgrind. Otherwise, Valgrind would complain on the second call of mem_heap_empty(). UNIV_MEM_ASSERT_RW(), UNIV_MEM_ASSERT_W(): Display additional diagnostics for failed Valgrind checks. Revision r1819: Merge r1815:1817 from branches/zip: Improve Valgrind instrumentation. UNIV_MEM_ASSERT_RW(): New macro, to check that the contents of a memory area is defined. UNIV_MEM_ASSERT_W(): New macro, to check that a memory area is writable. UNIV_MEM_ASSERT_AND_FREE(): New macro, to check that the memory is writable before declaring it free (unwritable). This replaces UNIV_MEM_FREE() in many places. mem_init_buf(): Check that the memory is writable, and declare it undefined. mem_erase_buf(): Check that the memory is writable, and declare it freed. storage/innobase/mem/mem0mem.c: Apply snapshot innodb-5.1-ss1989 Revision r1819: Merge r1815:1817 from branches/zip: Improve Valgrind instrumentation. UNIV_MEM_ASSERT_RW(): New macro, to check that the contents of a memory area is defined. UNIV_MEM_ASSERT_W(): New macro, to check that a memory area is writable. UNIV_MEM_ASSERT_AND_FREE(): New macro, to check that the memory is writable before declaring it free (unwritable). This replaces UNIV_MEM_FREE() in many places. mem_init_buf(): Check that the memory is writable, and declare it undefined. mem_erase_buf(): Check that the memory is writable, and declare it freed. storage/innobase/row/row0mysql.c: Apply snapshot innodb-5.1-ss1989 Revision r1786: row_create_table_for_mysql(), row_truncate_table_for_mysql(), row_drop_table_for_mysql(): Do not mention innodb_force_recovery when newraw is set. Revision r1790: row_drop_table_for_mysql(): Before calling dict_table_remove_from_cache(table) and thus freeing the memory allocated for the table, copy the table name. This avoids reading freed memory when name == table->name. Approved by Sunny. Revision r1783: Correct the function comments of row_create_table_for_mysql() and row_drop_table_for_mysql(). Revision r1894: Add debug lock checks to autoinc functions. Add lock guards around an invocation of dict_table_autoinc_initialize(). storage/innobase/row/row0sel.c: Apply snapshot innodb-5.1-ss1989 Revision r1782: Add comment that the variable dest should be word aligned. After discussion on IM with Heikki. Revision r1988: Set an error code when a deadlock occurs in semi-consistent read. (Bug #31494) innodb-semi-consistent: New tests for InnoDB semi-consistent reads. Unfortunately, these will not trigger Bug #31494, because there merely occur lock wait timeouts, not deadlocks. Revision r1820: Use the clustered index and not the one selected by the optimizer in the plan, when building a previous version of the row. This bug is triggered when running queries via InnoDB's internal SQL parser; when InnoDB's optimizer selects a secondary index for the plan. Revision r1828: Fix two bugs: Bug# 30907: We don't rely on *first_value to be 0 when checking whether get_auto_increment() has been invoked for the first time in a multi-row INSERT. We instead use trx_t::n_autoinc_rows. Initialize trx::n_autoinc_rows inside ha_innobase::start_stmt() too. Bug# 30888: While adding code for the low level read of the AUTOINC value from the index, the case for MEDIUM ints which are 3 bytes was missed triggering an assertion. Revision r1779: Fix a bug that handles the case where the host specific byte order matches the InnoDB storage byte order, which is big-endian. storage/innobase/sync/sync0rw.c: Apply snapshot innodb-5.1-ss1989 Revision r1757: Enclose rw_lock_validate() in #ifdef UNIV_DEBUG. It is only called by debug assertions. storage/innobase/ut/ut0ut.c: Apply snapshot innodb-5.1-ss1989 Revision r1850: Implement this feature request: http://bugs.mysql.com/30706 * Add a function that returns the number of microseconds since epoch - ut_time_us(). * Add (innodb|innobase|srv)_replication_delay MySQL config parameter. * Add UT_WAIT_FOR() macro that waits for a specified condition to occur until a timeout elapses. * Using all of the above, handle the replication thread specially in srv_conc_enter_innodb(). Approved by: Heikki Revision r1873: snprintf() should always return non-negative result. According to Microsoft documentation about _vscprintf(): If format is a null pointer, the invalid parameter handler is invoked, as described in Parameter Validation. If execution is allowed to continue, the functions return -1 and set errno to EINVAL. The UNIX variant of snprintf() segfaults if format is a NULL pointer (similar to strlen(NULL) for example), so it is better to conform to this behavior and crash our custom Windows version instead of returning -1. Noone would expect -1 to be returned from snprintf(). Cosmetic: Add a space after typecast. Approved by: Marko Revision r1862: Add ut_snprintf() function. On Windows this needs to be implemented using auxiliary functions because there is no snprintf-variant on Windows that behaves exactly as specified in the standard: * Always return the number of characters that would have been printed if the size were unlimited (not including the final `\0'). * Always '\0'-terminate the result * Do not touch the buffer if size=0, only return the number of characters that would have been printed. Can be used to estimate the size needed and to allocate it dynamically. See http://www.freebsd.org/cgi/query-pr.cgi?pr=87260 for the reason why 2 ap variables are used. Approved by: Heikki Revision r1866: Revert r1850 as MySQL did not approve the addition. log for r1850: Implement this feature request: http://bugs.mysql.com/30706 * Add a function that returns the number of microseconds since epoch - ut_time_us(). * Add (innodb|innobase|srv)_replication_delay MySQL config parameter. * Add UT_WAIT_FOR() macro that waits for a specified condition to occur until a timeout elapses. * Using all of the above, handle the replication thread specially in srv_conc_enter_innodb(). Revision r1787: Move the prototype of innobase_print_identifier() from ut0ut.c to ha_prototypes.h. Enclose the definitions in ha_prototypes.h in #ifndef UNIV_HOTBACKUP. Revision r1789: ut_print_namel(): Do not assume that all '/' are separators between database and table names. Approved by Heikki. Revision r1936: ut_print_buf(): Add a Valgrind check that the buffer is wholly defined. mysql-test/r/innodb-semi-consistent.result: Apply snapshot innodb-5.1-ss1989 Revision r1988: Set an error code when a deadlock occurs in semi-consistent read. (Bug #31494) innodb-semi-consistent: New tests for InnoDB semi-consistent reads. Unfortunately, these will not trigger Bug #31494, because there merely occur lock wait timeouts, not deadlocks. mysql-test/r/innodb_autoinc_lock_mode_zero.result: New test, using read-only setting --innodb-autoinc-lock-mode=0 mysql-test/t/innodb-semi-consistent-master.opt: Apply snapshot innodb-5.1-ss1989 Revision r1988: Set an error code when a deadlock occurs in semi-consistent read. (Bug #31494) innodb-semi-consistent: New tests for InnoDB semi-consistent reads. Unfortunately, these will not trigger Bug #31494, because there merely occur lock wait timeouts, not deadlocks. mysql-test/t/innodb-semi-consistent.test: Apply snapshot innodb-5.1-ss1989 Revision r1988: Set an error code when a deadlock occurs in semi-consistent read. (Bug #31494) innodb-semi-consistent: New tests for InnoDB semi-consistent reads. Unfortunately, these will not trigger Bug #31494, because there merely occur lock wait timeouts, not deadlocks. mysql-test/t/innodb_autoinc_lock_mode_zero-master.opt: New test, using read-only setting --innodb-autoinc-lock-mode=0 mysql-test/t/innodb_autoinc_lock_mode_zero.test: New test, using read-only setting --innodb-autoinc-lock-mode=0
345 lines
12 KiB
C
345 lines
12 KiB
C
/**********************************************************************
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Utilities for converting data from the database file
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to the machine format.
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(c) 1995 Innobase Oy
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Created 11/28/1995 Heikki Tuuri
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***********************************************************************/
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#ifndef mach0data_h
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#define mach0data_h
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#include "univ.i"
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#include "ut0byte.h"
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/* The data and all fields are always stored in a database file
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in the same format: ascii, big-endian, ... .
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All data in the files MUST be accessed using the functions in this
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module. */
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/***********************************************************
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The following function is used to store data in one byte. */
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UNIV_INLINE
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void
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mach_write_to_1(
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/*============*/
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byte* b, /* in: pointer to byte where to store */
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ulint n); /* in: ulint integer to be stored, >= 0, < 256 */
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/************************************************************
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The following function is used to fetch data from one byte. */
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UNIV_INLINE
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ulint
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mach_read_from_1(
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/*=============*/
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/* out: ulint integer, >= 0, < 256 */
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byte* b); /* in: pointer to byte */
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/***********************************************************
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The following function is used to store data in two consecutive
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bytes. We store the most significant byte to the lower address. */
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UNIV_INLINE
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void
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mach_write_to_2(
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/*============*/
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byte* b, /* in: pointer to two bytes where to store */
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ulint n); /* in: ulint integer to be stored, >= 0, < 64k */
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/************************************************************
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The following function is used to fetch data from two consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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ulint
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mach_read_from_2(
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/*=============*/
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/* out: ulint integer, >= 0, < 64k */
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byte* b); /* in: pointer to two bytes */
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/************************************************************
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The following function is used to convert a 16-bit data item
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to the canonical format, for fast bytewise equality test
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against memory. */
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UNIV_INLINE
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uint16
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mach_encode_2(
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/*==========*/
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/* out: 16-bit integer in canonical format */
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ulint n); /* in: integer in machine-dependent format */
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/************************************************************
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The following function is used to convert a 16-bit data item
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from the canonical format, for fast bytewise equality test
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against memory. */
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UNIV_INLINE
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ulint
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mach_decode_2(
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/*==========*/
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/* out: integer in machine-dependent format */
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uint16 n); /* in: 16-bit integer in canonical format */
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/***********************************************************
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The following function is used to store data in 3 consecutive
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bytes. We store the most significant byte to the lowest address. */
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UNIV_INLINE
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void
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mach_write_to_3(
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/*============*/
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byte* b, /* in: pointer to 3 bytes where to store */
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ulint n); /* in: ulint integer to be stored */
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/************************************************************
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The following function is used to fetch data from 3 consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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ulint
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mach_read_from_3(
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/*=============*/
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/* out: ulint integer */
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byte* b); /* in: pointer to 3 bytes */
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/***********************************************************
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The following function is used to store data in four consecutive
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bytes. We store the most significant byte to the lowest address. */
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UNIV_INLINE
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void
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mach_write_to_4(
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/*============*/
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byte* b, /* in: pointer to four bytes where to store */
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ulint n); /* in: ulint integer to be stored */
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/************************************************************
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The following function is used to fetch data from 4 consecutive
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bytes. The most significant byte is at the lowest address. */
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UNIV_INLINE
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ulint
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mach_read_from_4(
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/*=============*/
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/* out: ulint integer */
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byte* b); /* in: pointer to four bytes */
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/*************************************************************
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Writes a ulint in a compressed form (1..5 bytes). */
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UNIV_INLINE
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ulint
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mach_write_compressed(
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/*==================*/
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/* out: stored size in bytes */
|
|
byte* b, /* in: pointer to memory where to store */
|
|
ulint n); /* in: ulint integer to be stored */
|
|
/*************************************************************
|
|
Returns the size of an ulint when written in the compressed form. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_get_compressed_size(
|
|
/*=====================*/
|
|
/* out: compressed size in bytes */
|
|
ulint n); /* in: ulint integer to be stored */
|
|
/*************************************************************
|
|
Reads a ulint in a compressed form. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_compressed(
|
|
/*=================*/
|
|
/* out: read integer */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/***********************************************************
|
|
The following function is used to store data in 6 consecutive
|
|
bytes. We store the most significant byte to the lowest address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_6(
|
|
/*============*/
|
|
byte* b, /* in: pointer to 6 bytes where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/************************************************************
|
|
The following function is used to fetch data from 6 consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_read_from_6(
|
|
/*=============*/
|
|
/* out: dulint integer */
|
|
byte* b); /* in: pointer to 6 bytes */
|
|
/***********************************************************
|
|
The following function is used to store data in 7 consecutive
|
|
bytes. We store the most significant byte to the lowest address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_7(
|
|
/*============*/
|
|
byte* b, /* in: pointer to 7 bytes where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/************************************************************
|
|
The following function is used to fetch data from 7 consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_read_from_7(
|
|
/*=============*/
|
|
/* out: dulint integer */
|
|
byte* b); /* in: pointer to 7 bytes */
|
|
/***********************************************************
|
|
The following function is used to store data in 8 consecutive
|
|
bytes. We store the most significant byte to the lowest address. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_8(
|
|
/*============*/
|
|
byte* b, /* in: pointer to 8 bytes where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/************************************************************
|
|
The following function is used to fetch data from 8 consecutive
|
|
bytes. The most significant byte is at the lowest address. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_read_from_8(
|
|
/*=============*/
|
|
/* out: dulint integer */
|
|
byte* b); /* in: pointer to 8 bytes */
|
|
/*************************************************************
|
|
Writes a dulint in a compressed form (5..9 bytes). */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_dulint_write_compressed(
|
|
/*=========================*/
|
|
/* out: size in bytes */
|
|
byte* b, /* in: pointer to memory where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/*************************************************************
|
|
Returns the size of a dulint when written in the compressed form. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_dulint_get_compressed_size(
|
|
/*============================*/
|
|
/* out: compressed size in bytes */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/*************************************************************
|
|
Reads a dulint in a compressed form. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_dulint_read_compressed(
|
|
/*========================*/
|
|
/* out: read dulint */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/*************************************************************
|
|
Writes a dulint in a compressed form (1..11 bytes). */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_dulint_write_much_compressed(
|
|
/*==============================*/
|
|
/* out: size in bytes */
|
|
byte* b, /* in: pointer to memory where to store */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/*************************************************************
|
|
Returns the size of a dulint when written in the compressed form. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_dulint_get_much_compressed_size(
|
|
/*=================================*/
|
|
/* out: compressed size in bytes */
|
|
dulint n); /* in: dulint integer to be stored */
|
|
/*************************************************************
|
|
Reads a dulint in a compressed form. */
|
|
UNIV_INLINE
|
|
dulint
|
|
mach_dulint_read_much_compressed(
|
|
/*=============================*/
|
|
/* out: read dulint */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/*************************************************************
|
|
Reads a ulint in a compressed form if the log record fully contains it. */
|
|
|
|
byte*
|
|
mach_parse_compressed(
|
|
/*==================*/
|
|
/* out: pointer to end of the stored field, NULL if
|
|
not complete */
|
|
byte* ptr, /* in: pointer to buffer from where to read */
|
|
byte* end_ptr,/* in: pointer to end of the buffer */
|
|
ulint* val); /* out: read value */
|
|
/*************************************************************
|
|
Reads a dulint in a compressed form if the log record fully contains it. */
|
|
|
|
byte*
|
|
mach_dulint_parse_compressed(
|
|
/*=========================*/
|
|
/* out: pointer to end of the stored field, NULL if
|
|
not complete */
|
|
byte* ptr, /* in: pointer to buffer from where to read */
|
|
byte* end_ptr,/* in: pointer to end of the buffer */
|
|
dulint* val); /* out: read value */
|
|
/*************************************************************
|
|
Reads a double. It is stored in a little-endian format. */
|
|
UNIV_INLINE
|
|
double
|
|
mach_double_read(
|
|
/*=============*/
|
|
/* out: double read */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/*************************************************************
|
|
Writes a double. It is stored in a little-endian format. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_double_write(
|
|
/*==============*/
|
|
byte* b, /* in: pointer to memory where to write */
|
|
double d); /* in: double */
|
|
/*************************************************************
|
|
Reads a float. It is stored in a little-endian format. */
|
|
UNIV_INLINE
|
|
float
|
|
mach_float_read(
|
|
/*============*/
|
|
/* out: float read */
|
|
byte* b); /* in: pointer to memory from where to read */
|
|
/*************************************************************
|
|
Writes a float. It is stored in a little-endian format. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_float_write(
|
|
/*=============*/
|
|
byte* b, /* in: pointer to memory where to write */
|
|
float d); /* in: float */
|
|
/*************************************************************
|
|
Reads a ulint stored in the little-endian format. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_from_n_little_endian(
|
|
/*===========================*/
|
|
/* out: unsigned long int */
|
|
byte* buf, /* in: from where to read */
|
|
ulint buf_size); /* in: from how many bytes to read */
|
|
/*************************************************************
|
|
Writes a ulint in the little-endian format. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_n_little_endian(
|
|
/*==========================*/
|
|
byte* dest, /* in: where to write */
|
|
ulint dest_size, /* in: into how many bytes to write */
|
|
ulint n); /* in: unsigned long int to write */
|
|
/*************************************************************
|
|
Reads a ulint stored in the little-endian format. */
|
|
UNIV_INLINE
|
|
ulint
|
|
mach_read_from_2_little_endian(
|
|
/*===========================*/
|
|
/* out: unsigned long int */
|
|
byte* buf); /* in: from where to read */
|
|
/*************************************************************
|
|
Writes a ulint in the little-endian format. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_write_to_2_little_endian(
|
|
/*==========================*/
|
|
byte* dest, /* in: where to write */
|
|
ulint n); /* in: unsigned long int to write */
|
|
|
|
/*************************************************************
|
|
Convert integral type from storage byte order (big endian) to
|
|
host byte order. */
|
|
UNIV_INLINE
|
|
void
|
|
mach_read_int_type(
|
|
/*===============*/
|
|
byte* dest, /* out: where to write */
|
|
const byte* src, /* in: where to read from */
|
|
ulint len, /* in: length of src */
|
|
ibool unsigned_type); /* in: signed or unsigned flag */
|
|
#ifndef UNIV_NONINL
|
|
#include "mach0data.ic"
|
|
#endif
|
|
|
|
#endif
|