mariadb

Tree: bc4a456758

Author	SHA1	Message	Date
Sergei Golubchik	0d5adca0de	debug_sync is now a service, available to dynamically loaded plugins. new make target - abi_update libservices/HOWTO: remove references to Makefile.am small tweaks	14 years ago
Mikael Ronström	fbbe9c2e8e	Fixed such that debug_sync can be used by plugins on Windows	15 years ago
Andrei Elkin	c3cd608aef	Bug #51648 DBUG_SYNC_POINT is not defined on all platforms and mtr cant pre-check that DBUG_SYNC_POINT has at least one strong limitation that it's not defined on all platforms. It has issues cooperating with @@debug. All in all its functionality is superseded by DEBUG_SYNC facility and there is no reason to maintain the old less flexible one. Fixed with adding debug_sync_set_action() function as a facility to set up a sync-action in the server sources code and re-writing existing simulations (found 3) to use it. Couple of tests have been reworked as well. The patch offers a pattern for setting sync-points in replication threads where the standard DEBUG_SYNC does not suffice to reach goals. mysql-test/extra/rpl_tests/rpl_get_master_version_and_clock.test: rewriting the test from GET_LOCK()-based to DEBUG_SYNC-based; a pattern of usage DEBUG_SYNC for replication testing is provided. mysql-test/suite/rpl/r/rpl_get_master_version_and_clock.result: results are changed. mysql-test/suite/rpl/t/rpl_get_master_version_and_clock.test: rewriting the test from GET_LOCK()-based to DEBUG_SYNC-based; limiting the test to run only with MIXED binlog-format as the test last some 10 secs sensitively contributing to the total of tests run. mysql-test/suite/rpl/t/rpl_show_slave_running.test: rewriting the test from GET_LOCK()-based to DEBUG_SYNC-based. sql/debug_sync.cc: adding debug_sync_set_action() function as a facility to set up a sync-action in the server sources code. sql/debug_sync.h: externalizing debug_sync_set_action(). sql/item_func.cc: purging sources from DBUG_SYNC_POINT. sql/mysql_priv.h: purging sources from DBUG_SYNC_POINT. sql/slave.cc: rewriting failure simulations to base on DEBUG_SYNC rather than GET_LOCK()-based DBUG_SYNC_POINT. sql/sql_repl.cc: removing an orphan failure simulation line because no counterpart in tests existing.	16 years ago
Ingo Struewing	4d57b851a0	WL#4259 - Debug Sync Facility Backport from 6.0 to 5.1. Only those sync points are included, which are used in debug_sync.test. The Debug Sync Facility allows to place synchronization points in the code: open_tables(...) DEBUG_SYNC(thd, "after_open_tables"); lock_tables(...) When activated, a sync point can - Send a signal and/or - Wait for a signal Nomenclature: - signal: A value of a global variable that persists until overwritten by a new signal. The global variable can also be seen as a "signal post" or "flag mast". Then the signal is what is attached to the "signal post" or "flag mast". - send a signal: Assign the value (the signal) to the global variable ("set a flag") and broadcast a global condition to wake those waiting for a signal. - wait for a signal: Loop over waiting for the global condition until the global value matches the wait-for signal. Please find more information in the top comment in debug_sync.cc or in the worklog entry. .bzrignore: WL#4259 - Debug Sync Facility Added the symbolic link libmysqld/debug_sync.cc. CMakeLists.txt: WL#4259 - Debug Sync Facility Added definition for ENABLED_DEBUG_SYNC. configure.in: WL#4259 - Debug Sync Facility Added definition for ENABLED_DEBUG_SYNC. include/my_sys.h: WL#4259 - Debug Sync Facility Added definition for the DEBUG_SYNC_C macro. libmysqld/CMakeLists.txt: WL#4259 - Debug Sync Facility Added sql/debug_sync.cc. libmysqld/Makefile.am: WL#4259 - Debug Sync Facility Added sql/debug_sync.cc. mysql-test/include/have_debug_sync.inc: WL#4259 - Debug Sync Facility New include file. mysql-test/mysql-test-run.pl: WL#4259 - Debug Sync Facility Added option --debug_sync_timeout. mysql-test/r/debug_sync.result: WL#4259 - Debug Sync Facility New test result. mysql-test/r/have_debug_sync.require: WL#4259 - Debug Sync Facility New require file. mysql-test/t/debug_sync.test: WL#4259 - Debug Sync Facility New test file. mysys/my_static.c: WL#4259 - Debug Sync Facility Added definition for debug_sync_C_callback_ptr. mysys/thr_lock.c: WL#4259 - Debug Sync Facility Added sync point "wait_for_lock". sql/CMakeLists.txt: WL#4259 - Debug Sync Facility Added debug_sync.cc and debug_sync.h. sql/Makefile.am: WL#4259 - Debug Sync Facility Added debug_sync.cc and debug_sync.h. sql/debug_sync.cc: WL#4259 - Debug Sync Facility New source file. sql/debug_sync.h: WL#4259 - Debug Sync Facility New header file. sql/mysqld.cc: WL#4259 - Debug Sync Facility Added opt_debug_sync_timeout. Added calls to debug_sync_init() and debug_sync_end(). Fixed a purecov comment (unrelated). sql/set_var.cc: WL#4259 - Debug Sync Facility Added server variable "debug_sync". sql/set_var.h: WL#4259 - Debug Sync Facility Added declaration for server variable "debug_sync". sql/share/errmsg.txt: WL#4259 - Debug Sync Facility Added error messages ER_DEBUG_SYNC_TIMEOUT and ER_DEBUG_SYNC_HIT_LIMIT. sql/sql_base.cc: WL#4259 - Debug Sync Facility Added sync points "after_flush_unlock" and "before_lock_tables_takes_lock". sql/sql_class.cc: WL#4259 - Debug Sync Facility Added initialization for debug_sync_control to THD::THD. Added calls to debug_sync_init_thread() and debug_sync_end_thread(). sql/sql_class.h: WL#4259 - Debug Sync Facility Added element debug_sync_control to THD. storage/myisam/myisamchk.c: Fixed a typo in an error message string (unrelated).	17 years ago

8 Commits (bc4a456758c8077e5377b8cfaed60af4311653a0)