+ SilcSchedule parent;
+ SilcScheduleEventConnection conn;
+ SilcEventTask etask;
+
+ if (!schedule) {
+ schedule = silc_schedule_get_global();
+ SILC_VERIFY(schedule);
+ if (!schedule) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+ }
+
+ if (!event && !task) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+
+ if (task && task->type != SILC_TASK_EVENT) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+
+ /* Get parent scheduler */
+ parent = silc_schedule_get_parent(schedule);
+
+ SILC_SCHEDULE_LOCK(parent);
+
+ if (!task) {
+ /* Get the event task */
+ if (!silc_hash_table_find(parent->events, (void *)event, NULL,
+ (void *)&task)) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ return FALSE;
+ }
+ }
+ etask = (SilcEventTask)task;
+
+ /* See if task is deleted */
+ if (task->valid == FALSE) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ silc_set_errno(SILC_ERR_NOT_VALID);
+ return FALSE;
+ }
+
+ SILC_LOG_DEBUG(("Connect callback %p with context %p to event '%s'",
+ callback, context, etask->event));
+
+ /* See if already connected */
+ silc_list_start(etask->connections);
+ while ((conn = silc_list_get(etask->connections))) {
+ if (conn->callback == callback && conn->context == context) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ silc_set_errno(SILC_ERR_ALREADY_EXISTS);
+ return FALSE;
+ }
+ }
+
+ conn = silc_calloc(1, sizeof(*conn));
+ if (!conn) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ return FALSE;
+ }
+
+ /* Connect to the event */
+ conn->schedule = schedule;
+ conn->callback = callback;
+ conn->context = context;
+ silc_list_add(etask->connections, conn);
+
+ SILC_SCHEDULE_UNLOCK(parent);
+
+ return TRUE;
+}
+
+/* Disconnect from event */
+
+SilcBool silc_schedule_event_disconnect(SilcSchedule schedule,
+ const char *event, SilcTask task,
+ SilcTaskEventCallback callback,
+ void *context)
+{
+ SilcSchedule parent;
+ SilcScheduleEventConnection conn;
+ SilcEventTask etask;
+
+ if (!schedule) {
+ schedule = silc_schedule_get_global();
+ SILC_VERIFY(schedule);
+ if (!schedule) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+ }
+
+ if (!event && !task) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+
+ if (task && task->type != SILC_TASK_EVENT) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+
+ /* Get parent scheduler */
+ parent = silc_schedule_get_parent(schedule);
+
+ SILC_SCHEDULE_LOCK(parent);
+
+ if (!task) {
+ /* Get the event task */
+ if (!silc_hash_table_find(parent->events, (void *)event, NULL,
+ (void *)&task)) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ return FALSE;
+ }
+ }
+ etask = (SilcEventTask)task;
+
+ /* See if task is deleted */
+ if (task->valid == FALSE) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ silc_set_errno(SILC_ERR_NOT_VALID);
+ return FALSE;
+ }
+
+ SILC_LOG_DEBUG(("Disconnect callback %p with context %p from event '%s'",
+ callback, context, etask->event));
+
+ /* Disconnect */
+ silc_list_start(etask->connections);
+ while ((conn = silc_list_get(etask->connections))) {
+ if (conn->callback == callback && conn->context == context) {
+ silc_list_del(etask->connections, conn);
+ silc_free(conn);
+ SILC_SCHEDULE_UNLOCK(parent);
+ return TRUE;
+ }
+ }
+
+ SILC_SCHEDULE_UNLOCK(parent);
+ silc_set_errno(SILC_ERR_NOT_FOUND);
+ return FALSE;
+}
+
+/* Signal event */
+
+SilcBool silc_schedule_event_signal(SilcSchedule schedule, const char *event,
+ SilcTask task, ...)
+{
+ SilcSchedule parent;
+ SilcScheduleEventConnection conn;
+ SilcEventTask etask;
+ SilcBool stop;
+ va_list ap, cp;
+
+ if (silc_unlikely(!schedule)) {
+ schedule = silc_schedule_get_global();
+ SILC_VERIFY(schedule);
+ if (!schedule) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+ }
+
+ if (silc_unlikely(!event && !task)) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+
+ if (silc_unlikely(task && task->type != SILC_TASK_EVENT)) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+
+ /* Get parent scheduler */
+ parent = silc_schedule_get_parent(schedule);
+
+ SILC_SCHEDULE_LOCK(parent);
+
+ if (!task) {
+ /* Get the event task */
+ if (!silc_hash_table_find(parent->events, (void *)event, NULL,
+ (void *)&task)) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ return FALSE;
+ }
+ }
+ etask = (SilcEventTask)task;
+
+ /* See if task is deleted */
+ if (task->valid == FALSE) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ silc_set_errno(SILC_ERR_NOT_VALID);
+ return FALSE;
+ }
+
+ SILC_LOG_DEBUG(("Signal event '%s'", etask->event));
+
+ va_start(ap, task);
+
+ /* Deliver the signal */
+ silc_list_start(etask->connections);
+ while ((conn = silc_list_get(etask->connections))) {
+ SILC_SCHEDULE_UNLOCK(parent);
+
+ silc_va_copy(cp, ap);
+ stop = conn->callback(conn->schedule, conn->schedule->app_context,
+ task, conn->context, cp);
+ va_end(cp);
+
+ SILC_SCHEDULE_LOCK(parent);
+
+ /* Stop signal if wanted or if the task was deleted */
+ if (!stop || !task->valid)
+ break;
+ }
+
+ va_end(ap);
+
+ SILC_SCHEDULE_UNLOCK(parent);
+
+ return TRUE;
+}
+
+/* Delete event */
+
+SilcBool silc_schedule_task_del_event(SilcSchedule schedule, const char *event)
+{
+ SilcSchedule parent;
+ SilcTask task;
+
+ if (!schedule) {
+ schedule = silc_schedule_get_global();
+ SILC_VERIFY(schedule);
+ if (!schedule) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+ }
+
+ if (!event) {
+ silc_set_errno(SILC_ERR_INVALID_ARGUMENT);
+ return FALSE;
+ }
+
+ /* Get parent scheduler */
+ parent = silc_schedule_get_parent(schedule);
+
+ SILC_SCHEDULE_LOCK(parent);
+
+ /* Get the event task */
+ if (!silc_hash_table_find(parent->events, (void *)event, NULL,
+ (void *)&task)) {
+ SILC_SCHEDULE_UNLOCK(parent);
+ return FALSE;
+ }
+
+ /* See if already deleted */
+ if (task->valid == FALSE)
+ return TRUE;
+
+ SILC_LOG_DEBUG(("Delete event '%s'", ((SilcEventTask)task)->event));
+
+ SILC_SCHEDULE_UNLOCK(parent);
+
+ silc_schedule_task_del(parent, task);
+
+ return TRUE;