Avoid blocks on read() for inotify.

When we come into the function we don't know how much data is available to
read.  So just read a single event and return, so poll can figure out if there
is more for us or not.

diff --git a/obt/watch_inotify.c b/obt/watch_inotify.c
index 2aff0e394e8e89e2ee92783a85e515ba38fc0010..b55f5282a4fb3be38e4f000466d5ac914202fee7 100644 (file)
--- a/obt/watch_inotify.c
+++ b/obt/watch_inotify.c
@@ -301,6 +301,11 @@ static gboolean source_read(GSource *source, GSourceFunc cb, gpointer data)
                 }
 
                 g_free(full_path);
+
+                /* only read one event at a time, so poll can tell us if there
+                   is another one ready, and we don't block on the read()
+                   needlessly. */
+                break;
             }
 
             if (state == READING_NAME_HEAP)