From cba031bd54f9bf8daa05c5a28aafc295b9092acf Mon Sep 17 00:00:00 2001
From: Angel Ortega <angel@triptico.com>
Date: Wed, 26 Jan 2011 10:18:18 +0100
Subject: [PATCH] Added a queue empty test in del_queue_thread().

---
 mpdm_v.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/mpdm_v.c b/mpdm_v.c
index d99ba31..1ff5d82 100644
--- a/mpdm_v.c
+++ b/mpdm_v.c
@@ -90,6 +90,10 @@ static mpdm_t del_queue_thread(mpdm_t args, mpdm_t ctxt)
         /* wait for next value */
         mpdm_semaphore_wait(mpdm->del_queue_sem);
 
+        /* do nothing if the queue is empty (should't happen) */
+        if (mpdm->del == NULL)
+            continue;
+
         /* atomically dequeue */
         mpdm_mutex_lock(mpdm->del_queue_mutex);
 
-- 
2.11.4.GIT