[PATCH 19/23] wmsun: Smart display refresh for fewer wake-ups and better responsiveness.

[Doug Torrance]

Patch by Peter Colberg <pet...@gmx.net> for Debian bug #446681 [1].

[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=446681
---
 wmsun/wmsun.c | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/wmsun/wmsun.c b/wmsun/wmsun.c
index ba4a95d..3f38497 100644
--- a/wmsun/wmsun.c
+++ b/wmsun/wmsun.c
@@ -61,7 +61,7 @@
 /*
  *  Delay between refreshes (in microseconds)
  */
-#define DELAY 10000L
+#define DELAY 1000000L
 #define WMSUN_VERSION "1.03"
 
 #define DegPerRad       57.29577951308232087680
@@ -108,6 +108,8 @@ int main(int argc, char *argv[]) {
     long               CurrentLocalTime, CurrentGMTTime, date;
     double             UT, val, LTRise, LTSet, LocalHour, hour24();
     int                        H, M;
+    struct timeval     timeout;
+    fd_set             xfdset;
 
 
 
@@ -254,6 +256,11 @@ int main(int argc, char *argv[]) {
 
 
 
+       /*
+        *  Add X display to file descriptor set for polling.
+        */
+       FD_ZERO(&xfdset);
+       FD_SET(ConnectionNumber(display), &xfdset);
 
 
 
@@ -285,7 +292,9 @@ int main(int argc, char *argv[]) {
         *  Redraw and wait for next update
         */
        RedrawWindow();
-       usleep(DELAY);
+       timeout.tv_sec = DELAY / 1000000L;
+       timeout.tv_usec = DELAY % 1000000L;
+       select(ConnectionNumber(display) + 1, &xfdset, NULL, NULL, &timeout);
 
 
      }
-- 
2.1.4


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