1 files changed, 1 insertions, 0 deletions
diff --git a/gtk/coroutine.h b/gtk/coroutine.h
index 031a97b..a9b3a87 100644
--- a/gtk/coroutine.h
+++ b/gtk/coroutine.h
@@ -55,6 +55,7 @@ struct coroutine
 #endif
 };
 
+#define IN_MAIN_CONTEXT (coroutine_self()->caller == NULL)
 int coroutine_init(struct coroutine *co);
 
 int coroutine_release(struct coroutine *co);