From 06304030a23c9ae1cb6778f5a0b4b192ac719077 Mon Sep 17 00:00:00 2001
From: Pavel Labath <pavelo@centrum.sk>
Date: Fri, 25 Mar 2011 12:33:13 +0100
Subject: [PATCH] update system: clear multiple posts in case of slow updates

---
 src/update-cb.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/update-cb.cc b/src/update-cb.cc
index d86b8731..2ec20131 100644
--- a/src/update-cb.cc
+++ b/src/update-cb.cc
@@ -98,6 +98,11 @@ namespace conky {
 				sem_start.wait();
 				if(done)
 					return;
+
+				// clear any remaining posts in case the previous iteration was very slow
+				// (this should only happen if wait == false)
+				while(sem_start.trywait());
+
 				work();
 				if(wait)
 					sem_wait.post();