BLI_threads Queue: add `BLI_thread_queue_is_empty()`.

Avoids counting the whole queue when we only want to check whether it is empty or not!

1 files changed, 11 insertions, 0 deletions

diff --git a/source/blender/blenlib/intern/threads.c b/source/blender/blenlib/intern/threads.c
index 50295954192..73cadea71c0 100644
--- a/source/blender/blenlib/intern/threads.c
+++ b/source/blender/blenlib/intern/threads.c
@@ -777,6 +777,17 @@ int BLI_thread_queue_size(ThreadQueue *queue)
 	return size;
 }
 
+bool BLI_thread_queue_is_empty(ThreadQueue *queue)
+{
+	bool is_empty;
+
+	pthread_mutex_lock(&queue->mutex);
+	is_empty = BLI_gsqueue_is_empty(queue->queue);
+	pthread_mutex_unlock(&queue->mutex);
+
+	return is_empty;
+}
+
 void BLI_thread_queue_nowait(ThreadQueue *queue)
 {
 	pthread_mutex_lock(&queue->mutex);