C++ (Cpp) TSRM_SAFE_RETURN_RSRC Examples

Example #1

File: TSRM.c Project: daniel-higa/php-src

/* fetches the requested resource for the current thread */
TSRM_API void *ts_resource_ex(ts_rsrc_id id, THREAD_T *th_id)
{/*{{{*/
	THREAD_T thread_id;
	int hash_value;
	tsrm_tls_entry *thread_resources;

	if (!th_id) {
		/* Fast path for looking up the resources for the current
		 * thread. Its used by just about every call to
		 * ts_resource_ex(). This avoids the need for a mutex lock
		 * and our hashtable lookup.
		 */
		thread_resources = tsrm_tls_get();

		if (thread_resources) {
			TSRM_ERROR((TSRM_ERROR_LEVEL_INFO, "Fetching resource id %d for current thread %d", id, (long) thread_resources->thread_id));
			/* Read a specific resource from the thread's resources.
			 * This is called outside of a mutex, so have to be aware about external
			 * changes to the structure as we read it.
			 */
			TSRM_SAFE_RETURN_RSRC(thread_resources->storage, id, thread_resources->count);
		}
		thread_id = tsrm_thread_id();
	} else {
		thread_id = *th_id;
	}

	TSRM_ERROR((TSRM_ERROR_LEVEL_INFO, "Fetching resource id %d for thread %ld", id, (long) thread_id));
	tsrm_mutex_lock(tsmm_mutex);

	hash_value = THREAD_HASH_OF(thread_id, tsrm_tls_table_size);
	thread_resources = tsrm_tls_table[hash_value];

	if (!thread_resources) {
		allocate_new_resource(&tsrm_tls_table[hash_value], thread_id);
		return ts_resource_ex(id, &thread_id);
	} else {
		 do {
			if (thread_resources->thread_id == thread_id) {
				break;
			}
			if (thread_resources->next) {
				thread_resources = thread_resources->next;
			} else {
				allocate_new_resource(&thread_resources->next, thread_id);
				return ts_resource_ex(id, &thread_id);
				/*
				 * thread_resources = thread_resources->next;
				 * break;
				 */
			}
		 } while (thread_resources);
	}
	tsrm_mutex_unlock(tsmm_mutex);
	/* Read a specific resource from the thread's resources.
	 * This is called outside of a mutex, so have to be aware about external
	 * changes to the structure as we read it.
	 */
	TSRM_SAFE_RETURN_RSRC(thread_resources->storage, id, thread_resources->count);
}/*}}}*/

Example #2

File: TSRM.c Project: kennyb/php-broken

/* fetches the requested resource for the current thread */
TSRM_API void *ts_resource_ex(ts_rsrc_id id, THREAD_T *th_id)
{
	THREAD_T thread_id;
	int hash_value;
	tsrm_tls_entry *thread_resources;

#ifdef NETWARE
	/* The below if loop is added for NetWare to fix an abend while unloading PHP
	 * when an Apache unload command is issued on the system console.
	 * While exiting from PHP, at the end for some reason, this function is called
	 * with tsrm_tls_table = NULL. When this happened, the server abends when
	 * tsrm_tls_table is accessed since it is NULL.
	 */
	if(tsrm_tls_table) {
#endif
	if (!th_id) {
		/* Fast path for looking up the resources for the current
		 * thread. Its used by just about every call to
		 * ts_resource_ex(). This avoids the need for a mutex lock
		 * and our hashtable lookup.
		 */
		thread_resources = tsrm_tls_get();

		if (thread_resources) {
			TSRM_ERROR((TSRM_ERROR_LEVEL_INFO, "Fetching resource id %d for current thread %d", id, (long) thread_resources->thread_id));
			/* Read a specific resource from the thread's resources.
			 * This is called outside of a mutex, so have to be aware about external
			 * changes to the structure as we read it.
			 */
			TSRM_SAFE_RETURN_RSRC(thread_resources->storage, id, thread_resources->count);
		}
		thread_id = tsrm_thread_id();
	} else {
		thread_id = *th_id;
	}

	TSRM_ERROR((TSRM_ERROR_LEVEL_INFO, "Fetching resource id %d for thread %ld", id, (long) thread_id));
	tsrm_mutex_lock(tsmm_mutex);

	hash_value = THREAD_HASH_OF(thread_id, tsrm_tls_table_size);
	thread_resources = tsrm_tls_table[hash_value];

	if (!thread_resources) {
		allocate_new_resource(&tsrm_tls_table[hash_value], thread_id);
		return ts_resource_ex(id, &thread_id);
	} else {
		 do {
			if (thread_resources->thread_id == thread_id) {
				break;
			}
			if (thread_resources->next) {
				thread_resources = thread_resources->next;
			} else {
				allocate_new_resource(&thread_resources->next, thread_id);
				return ts_resource_ex(id, &thread_id);
				/*
				 * thread_resources = thread_resources->next;
				 * break;
				 */
			}
		 } while (thread_resources);
	}
	tsrm_mutex_unlock(tsmm_mutex);
	/* Read a specific resource from the thread's resources.
	 * This is called outside of a mutex, so have to be aware about external
	 * changes to the structure as we read it.
	 */
	TSRM_SAFE_RETURN_RSRC(thread_resources->storage, id, thread_resources->count);
#ifdef NETWARE
	}	/* if(tsrm_tls_table) */
#endif
}