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Merge pilot.(none):/data/msvensson/mysql/bug28690/my50-bug28690

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into  pilot.(none):/data/msvensson/mysql/mysql-5.0-maint
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msvensson@pilot.(none) 2007-06-07 10:00:23 +02:00
commit ee9e271420
1 changed files with 20 additions and 16 deletions
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36
mysys/my_thr_init.c
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@ -87,27 +87,31 @@ my_bool my_thread_global_init(void)
fprintf(stderr,"Can't initialize threads: error %d\n", pth_ret); fprintf(stderr,"Can't initialize threads: error %d\n", pth_ret);
return 1; return 1;
} }
#ifdef NPTL_PTHREAD_EXIT_BUG #ifdef NPTL_PTHREAD_EXIT_BUG
/*
BUG#24507: Race conditions inside current NPTL pthread_exit()
implementation.
/* To avoid a possible segmentation fault during concurrent
BUG#24507: Race conditions inside current NPTL pthread_exit() implementation. executions of pthread_exit(), a dummy thread is spawned which
initializes internal variables of pthread lib. See bug description
for a full explanation.
To avoid a possible segmentation fault during concurrent executions of TODO: Remove this code when fixed versions of glibc6 are in common
pthread_exit(), a dummy thread is spawned which initializes internal variables use.
of pthread lib. See bug description for thoroughfull explanation. */
if (thd_lib_detected == THD_LIB_NPTL)
TODO: Remove this code when fixed versions of glibc6 are in common use. {
*/ pthread_t dummy_thread;
pthread_attr_t dummy_thread_attr;
pthread_t dummy_thread; pthread_attr_init(&dummy_thread_attr);
pthread_attr_t dummy_thread_attr; pthread_attr_setdetachstate(&dummy_thread_attr, PTHREAD_CREATE_DETACHED);
pthread_attr_init(&dummy_thread_attr);
pthread_attr_setdetachstate(&dummy_thread_attr,PTHREAD_CREATE_DETACHED);
pthread_create(&dummy_thread,&dummy_thread_attr,nptl_pthread_exit_hack_handler,NULL);
pthread_create(&dummy_thread,&dummy_thread_attr,
nptl_pthread_exit_hack_handler, NULL);
}
#endif #endif
#ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP #ifdef PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP