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MDEV-7109: Add support for INFORMATION_SCHEMA.INNODB_SEMAPHORE_WAITS

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MDEV-7399: Add support for INFORMATION_SCHEMA.INNODB_MUTEXES
    MDEV-7618: Improve semaphore instrumentation

    Introduced two new information schema tables to monitor mutex waits
    and semaphore waits. Added a new configuration variable
    innodb_intrument_semaphores to add thread_id, file name and
    line of current holder of mutex/rw_lock.
This commit is contained in:
Jan Lindström 2015-02-21 21:45:16 +02:00
commit 1cc7befc14
39 changed files with 2173 additions and 293 deletions
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16
storage/innobase/include/sync0rw.ic
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@ -325,6 +325,12 @@ rw_lock_s_lock_low(
lock->last_s_file_name = file_name;
lock->last_s_line = line;
if (srv_instrument_semaphores) {
lock->thread_id = os_thread_get_curr_id();
lock->file_name = file_name;
lock->line = line;
}
return(TRUE); /* locking succeeded */
}
@ -426,6 +432,12 @@ rw_lock_x_lock_func_nowait(
rw_lock_add_debug_info(lock, 0, RW_LOCK_EX, file_name, line);
#endif
if (srv_instrument_semaphores) {
lock->thread_id = os_thread_get_curr_id();
lock->file_name = file_name;
lock->line = line;
}
lock->last_x_file_name = file_name;
lock->last_x_line = line;
@ -546,8 +558,8 @@ pfs_rw_lock_create_func(
# ifdef UNIV_SYNC_DEBUG
ulint level, /*!< in: level */
# endif /* UNIV_SYNC_DEBUG */
const char* cmutex_name, /*!< in: mutex name */
# endif /* UNIV_DEBUG */
const char* cmutex_name, /*!< in: mutex name */
const char* cfile_name, /*!< in: file name where created */
ulint cline) /*!< in: file line where created */
{
@ -560,8 +572,8 @@ pfs_rw_lock_create_func(
# ifdef UNIV_SYNC_DEBUG
level,
# endif /* UNIV_SYNC_DEBUG */
cmutex_name,
# endif /* UNIV_DEBUG */
cmutex_name,
cfile_name,
cline);
}