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Bug #28284: Test "mysqlslap" reports "out of memory"

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When locking a "fast" mutex a static variable cpu_count 
was used as a flag to initialize itself on the first usage 
by calling sysconf() and setting non-zero value.
This is not thread and optimization safe on some 
platforms. That's why the global initialization needs 
to be done once in a designated function.
This will also speed up the usage (by a small bit) 
because it won't have to check if it's initialized on
every call.

Fixed by moving the fast mutexes initialization out of 
my_pthread_fastmutex_lock() to fastmutex_global_init()
and call it from my_init()
This commit is contained in:
gkodinov/kgeorge@magare.gmz
2007-08-24 18:06:44 +03:00
parent c4811d67f7
commit 63d18a6057
3 changed files with 15 additions and 6 deletions
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3
mysys/my_init.c
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@ -78,6 +78,9 @@ my_bool my_init(void)
my_umask_dir= 0700; /* Default umask for new directories */
#if defined(THREAD) && defined(SAFE_MUTEX)
safe_mutex_global_init(); /* Must be called early */
#endif
#if defined(THREAD) && defined(MY_PTHREAD_FASTMUTEX) && !defined(SAFE_MUTEX)
fastmutex_global_init(); /* Must be called early */
#endif
netware_init();
#ifdef THREAD