C++ (Cpp) my_init_mysys_psi_keys示例

示例#1

文件： my_thr_init.c 项目： CSI3304Project/CSI3304Project1

/**
  Re-initialize components initialized early with @c my_thread_global_init.
  Some mutexes were initialized before the instrumentation.
  Destroy + create them again, now that the instrumentation
  is in place.
  This is safe, since this function() is called before creating new threads,
  so the mutexes are not in use.
*/
void my_thread_global_reinit(void)
{
  struct st_my_thread_var *tmp;

  DBUG_ASSERT(my_thread_global_init_done);

#ifdef HAVE_PSI_INTERFACE
  my_init_mysys_psi_keys();
#endif

  mysql_mutex_destroy(&THR_LOCK_heap);
  mysql_mutex_init(key_THR_LOCK_heap, &THR_LOCK_heap, MY_MUTEX_INIT_FAST);

  mysql_mutex_destroy(&THR_LOCK_net);
  mysql_mutex_init(key_THR_LOCK_net, &THR_LOCK_net, MY_MUTEX_INIT_FAST);

  mysql_mutex_destroy(&THR_LOCK_myisam);
  mysql_mutex_init(key_THR_LOCK_myisam, &THR_LOCK_myisam, MY_MUTEX_INIT_SLOW);

  mysql_mutex_destroy(&THR_LOCK_malloc);
  mysql_mutex_init(key_THR_LOCK_malloc, &THR_LOCK_malloc, MY_MUTEX_INIT_FAST);

  mysql_mutex_destroy(&THR_LOCK_open);
  mysql_mutex_init(key_THR_LOCK_open, &THR_LOCK_open, MY_MUTEX_INIT_FAST);

  mysql_mutex_destroy(&THR_LOCK_charset);
  mysql_mutex_init(key_THR_LOCK_charset, &THR_LOCK_charset, MY_MUTEX_INIT_FAST);

  mysql_mutex_destroy(&THR_LOCK_threads);
  mysql_mutex_init(key_THR_LOCK_threads, &THR_LOCK_threads, MY_MUTEX_INIT_FAST);

  mysql_cond_destroy(&THR_COND_threads);
  mysql_cond_init(key_THR_COND_threads, &THR_COND_threads);

  tmp= mysys_thread_var();
  DBUG_ASSERT(tmp);

  mysql_mutex_destroy(&tmp->mutex);
  mysql_mutex_init(key_my_thread_var_mutex, &tmp->mutex, MY_MUTEX_INIT_FAST);

  mysql_cond_destroy(&tmp->suspend);
  mysql_cond_init(key_my_thread_var_suspend, &tmp->suspend);
}

示例#2

文件： my_thr_init.c 项目： DiegoCardona/DontCrashMyDrone

/**
  Re-initialize components initialized early with @c my_thread_global_init.
  Some mutexes were initialized before the instrumentation.
  Destroy + create them again, now that the instrumentation
  is in place.
  This is safe, since this function() is called before creating new threads,
  so the mutexes are not in use.
*/
void my_thread_global_reinit(void)
{
  struct st_my_thread_var *tmp;

  DBUG_ASSERT(my_thread_global_init_done);

#ifdef HAVE_PSI_INTERFACE
  my_init_mysys_psi_keys();
#endif

  my_thread_destroy_common_mutex();
  my_thread_init_common_mutex();

  my_thread_destroy_internal_mutex();
  my_thread_init_internal_mutex();

  tmp= my_pthread_getspecific(struct st_my_thread_var*, THR_KEY_mysys);
  DBUG_ASSERT(tmp);

  my_thread_destory_thr_mutex(tmp);
  my_thread_init_thr_mutex(tmp);
}