Improve reliability of timeout handling (#450, part 1)

This commit prevents "timer loops" without intermediate event handling
if callback handling takes longer than the timer delay of repeating
timers.

For more details see GitHub issue #450.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/Fl_Timeout.h b/src/Fl_Timeout.h
index 610f00067..8cff84689 100644
--- a/src/Fl_Timeout.h
+++ b/src/Fl_Timeout.h
@@ -51,6 +51,7 @@ protected:
   Fl_Timeout_Handler callback;  // the user's callback
   void *data;                   // the user's callback data
   double time;                  // delay until timeout
+  int skip;                     // skip "new" (inserted) timers (issue #450)
 
   // constructor
   Fl_Timeout() {
@@ -58,6 +59,7 @@ protected:
     callback = 0;
     data = 0;
     time = 0;
+    skip = 0;
   }
 
   ~Fl_Timeout() {}