From ddc05e05d7d459c5d30dca8e45f0ceb03155f967 Mon Sep 17 00:00:00 2001
From: Shiqing Fan <shiqing@hlrs.de>
Date: Wed, 16 Feb 2011 08:48:21 +0000
Subject: [PATCH] Avoid blocking select on Windows.

This commit was SVN r24396.
---
 opal/mca/event/libevent207/libevent/event.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/opal/mca/event/libevent207/libevent/event.c b/opal/mca/event/libevent207/libevent/event.c
index 1341732c6b..9e5138df80 100644
--- a/opal/mca/event/libevent207/libevent/event.c
+++ b/opal/mca/event/libevent207/libevent/event.c
@@ -2320,7 +2320,15 @@ timeout_next(struct event_base *base, struct timeval **tv_p)
 
 	if (ev == NULL) {
 		/* if no time-based events are active wait for I/O */
+
+        /****    OMPI CHANGE    ****/
+        /* set a timeval to avoid blocking select on Windows */
+#ifndef WIN32
 		*tv_p = NULL;
+#else
+        struct timeval now = {1, 0};
+        **tv_p = now;
+#endif
 		goto out;
 	}