fix race condition when hangup happends after answer indication but before the session thread is started

This commit is contained in:
Anthony Minessale
2010-05-03 13:29:56 -04:00
committed by Sangoma Dev Box
parent 652d2fdfb3
commit 9096501ee4
5 changed files with 47 additions and 17 deletions
+16 -6
View File
@@ -1024,7 +1024,12 @@ SWITCH_DECLARE(void) switch_core_session_signal_state_change(switch_core_session
SWITCH_DECLARE(unsigned int) switch_core_session_running(switch_core_session_t *session)
{
return session->thread_running;
return switch_test_flag(session, SSF_THREAD_RUNNING) ? 1 : 0;
}
SWITCH_DECLARE(unsigned int) switch_core_session_started(switch_core_session_t *session)
{
return switch_test_flag(session, SSF_THREAD_STARTED) ? 1 : 0;
}
SWITCH_DECLARE(void) switch_core_session_perform_destroy(switch_core_session_t **session, const char *file, const char *func, int line)
@@ -1197,17 +1202,22 @@ SWITCH_DECLARE(switch_status_t) switch_core_session_thread_launch(switch_core_se
switch_mutex_lock(session->mutex);
if (!session->thread_running) {
session->thread_running = 1;
if (switch_test_flag(session, SSF_THREAD_RUNNING)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Cannot double-launch thread!\n");
} else if (switch_test_flag(session, SSF_THREAD_STARTED)) {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Cannot launch thread again after it has already been run!\n");
} else {
switch_set_flag(session, SSF_THREAD_RUNNING);
switch_set_flag(session, SSF_THREAD_STARTED);
switch_threadattr_stacksize_set(thd_attr, SWITCH_THREAD_STACKSIZE);
if (switch_thread_create(&thread, thd_attr, switch_core_session_thread, session, session->pool) == SWITCH_STATUS_SUCCESS) {
switch_set_flag(session, SSF_THREAD_STARTED);
status = SWITCH_STATUS_SUCCESS;
} else {
session->thread_running = 0;
switch_clear_flag(session, SSF_THREAD_RUNNING);
switch_clear_flag(session, SSF_THREAD_STARTED);
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Cannot create thread!\n");
}
} else {
switch_log_printf(SWITCH_CHANNEL_SESSION_LOG(session), SWITCH_LOG_CRIT, "Cannot double-launch thread!\n");
}
switch_mutex_unlock(session->mutex);