Actually process write watches in the wakeup handler

My apologies for the churn; this is, I think, a slightly better patch than
my previous patch, 'Process watches even when there is no X activity', in that
it avoids doing an extra polling select when we're idle.

1 files changed, 16 insertions, 1 deletions

diff --git a/src/spiceqxl_main_loop.c b/src/spiceqxl_main_loop.c
index 1718861..e57fb91 100644
--- a/src/spiceqxl_main_loop.c
+++ b/src/spiceqxl_main_loop.c
@@ -315,9 +315,24 @@ static void select_and_check_watches(void)
     }
 }
 
+static int no_write_watches(Ring *w)
+{
+    SpiceWatch *watch;
+    RingItem *link;
+    RingItem *next;
+
+    RING_FOREACH_SAFE(link, next, w) {
+        watch = (SpiceWatch*)link;
+        if (!watch->remove && (watch->event_mask & SPICE_WATCH_EVENT_WRITE))
+            return 0;
+    }
+
+    return 1;
+}
+
 static void xspice_wakeup_handler(pointer data, int nfds, pointer readmask)
 {
-    if (!nfds) {
+    if (!nfds && no_write_watches(&watches)) {
         return;
     }
     select_and_check_watches();