FS-10167: Fixed sessions to cleanup external from their own state processing…

FS-10167: Fixed sessions to cleanup external from their own state processing thread to avoid deadlocking on thread join during cleanup.

libs/libblade/src/blade_session.c

@@ -505,8 +505,7 @@ ks_status_t blade_session_state_on_destroy(blade_session_t *bs)
 
 	ks_log(KS_LOG_DEBUG, "Session (%s) state destroy\n", bs->id);
 
-	blade_handle_sessions_remove(bs);
-	blade_session_destroy(&bs);
+	blade_session_state_set(bs, BLADE_SESSION_STATE_CLEANUP);
 
 	// @todo ignoring returns for now, see what makes sense later
 	return KS_STATUS_SUCCESS;

libs/libblade/src/blade_stack.c

@@ -889,6 +889,7 @@ void *blade_handle_worker_thread(ks_thread_t *thread, void *data)
 {
 	blade_handle_t *bh = NULL;
 	blade_connection_t *bc = NULL;
+	blade_session_t *bs = NULL;
 	ks_hash_iterator_t *it = NULL;
 	ks_q_t *cleanup = NULL;
 
@@ -917,6 +918,22 @@ void *blade_handle_worker_thread(ks_thread_t *thread, void *data)
 			blade_connection_destroy(&bc);
 		}
 
+		ks_hash_write_lock(bh->sessions);
+		for (it = ks_hash_first(bh->sessions, KS_UNLOCKED); it; it = ks_hash_next(&it)) {
+			void *key = NULL;
+			blade_session_t *value = NULL;
+
+			ks_hash_this(it, (const void **)&key, NULL, (void **)&value);
+
+			if (blade_session_state_get(value) == BLADE_SESSION_STATE_CLEANUP) ks_q_push(cleanup, value);
+		}
+		ks_hash_write_unlock(bh->sessions);
+
+		while (ks_q_trypop(cleanup, (void **)&bs) == KS_STATUS_SUCCESS) {
+			blade_handle_sessions_remove(bs);
+			blade_session_destroy(&bs);
+		}
+
 		ks_sleep_ms(500);
 	}
 

libs/libblade/src/include/blade_types.h

@@ -105,6 +105,7 @@ typedef enum {
 
 typedef enum {
 	BLADE_SESSION_STATE_NONE,
+	BLADE_SESSION_STATE_CLEANUP,
 	BLADE_SESSION_STATE_DESTROY,
 	BLADE_SESSION_STATE_HANGUP,
 	BLADE_SESSION_STATE_CONNECT,