event_pipe: added event_pipe_emit_fast()

event_pipe_emit_fast() is aimed for use in signal handlers: it doesn't
lock the mutex, and doesn't log on error.  That makes it potentially
lossy, but for its intended use, that does not matter.

1 files changed, 7 insertions, 0 deletions

diff --git a/src/event_pipe.h b/src/event_pipe.h
index 3126df9cd..8da10c759 100644
--- a/src/event_pipe.h
+++ b/src/event_pipe.h
@@ -56,6 +56,13 @@ event_pipe_register(enum pipe_event event, event_pipe_callback_t callback);
 
 void event_pipe_emit(enum pipe_event event);
 
+/**
+ * Similar to event_pipe_emit(), but aimed for use in signal handlers:
+ * it doesn't lock the mutex, and doesn't log on error.  That makes it
+ * potentially lossy, but for its intended use, that does not matter.
+ */
+void event_pipe_emit_fast(enum pipe_event event);
+
 void event_pipe_signal(void);
 
 void event_pipe_wait(void);