Exemplo n.º 1
0
/*
 * Process all the callbacks waiting for lock
 *
 * If lock has failed, callback is executed with locked=false
 */
static void process_callbacks(struct lock_context *lock_ctx, bool locked)
{
	struct lock_request *request, *next;

	if (lock_ctx->auto_mark && locked) {
		switch (lock_ctx->type) {
		case LOCK_RECORD:
			tdb_chainlock_mark(lock_ctx->ctdb_db->ltdb->tdb, lock_ctx->key);
			break;

		case LOCK_DB:
			tdb_lockall_mark(lock_ctx->ctdb_db->ltdb->tdb);
			break;

		case LOCK_ALLDB_PRIO:
			ctdb_lockall_mark_prio(lock_ctx->ctdb, lock_ctx->priority);
			break;

		case LOCK_ALLDB:
			ctdb_lockall_mark(lock_ctx->ctdb);
			break;
		}
	}

	/* Iterate through all callbacks */
	request = lock_ctx->req_queue;
	while (request) {
		if (lock_ctx->auto_mark) {
			/* Reset the destructor, so request is not removed from the list */
			talloc_set_destructor(request, NULL);
		}

		/* In case, callback frees the request, store next */
		next = request->next;
		request->callback(request->private_data, locked);
		request = next;
	}

	if (lock_ctx->auto_mark && locked) {
		switch (lock_ctx->type) {
		case LOCK_RECORD:
			tdb_chainlock_unmark(lock_ctx->ctdb_db->ltdb->tdb, lock_ctx->key);
			break;

		case LOCK_DB:
			tdb_lockall_unmark(lock_ctx->ctdb_db->ltdb->tdb);
			break;

		case LOCK_ALLDB_PRIO:
			ctdb_lockall_unmark_prio(lock_ctx->ctdb, lock_ctx->priority);
			break;

		case LOCK_ALLDB:
			ctdb_lockall_unmark(lock_ctx->ctdb);
			break;
		}
	}
}
Exemplo n.º 2
0
/*
 * Process all the callbacks waiting for lock
 *
 * If lock has failed, callback is executed with locked=false
 */
static void process_callbacks(struct lock_context *lock_ctx, bool locked)
{
	struct lock_request *request;
	bool auto_mark = lock_ctx->auto_mark;

	if (auto_mark && locked) {
		switch (lock_ctx->type) {
		case LOCK_RECORD:
			tdb_chainlock_mark(lock_ctx->ctdb_db->ltdb->tdb, lock_ctx->key);
			break;

		case LOCK_DB:
			ctdb_lockdb_mark(lock_ctx->ctdb_db);
			break;
		}
	}

	request = lock_ctx->request;
	if (auto_mark) {
		/* Since request may be freed in the callback, unset the lock
		 * context, so request destructor will not free lock context.
		 */
		request->lctx = NULL;
	}

	/* Since request may be freed in the callback, unset the request */
	lock_ctx->request = NULL;

	request->callback(request->private_data, locked);

	if (!auto_mark) {
		return;
	}

	if (locked) {
		switch (lock_ctx->type) {
		case LOCK_RECORD:
			tdb_chainlock_unmark(lock_ctx->ctdb_db->ltdb->tdb, lock_ctx->key);
			break;

		case LOCK_DB:
			ctdb_lockdb_unmark(lock_ctx->ctdb_db);
			break;
		}
	}

	talloc_free(lock_ctx);
}