From: Victor Julien <victor@inliniac.net>
Date: Fri, 25 Jul 2014 15:41:34 +0000 (+0200)
Subject: Fix engine getting stuck because of optimizations
X-Git-Tag: suricata-2.1beta1~84
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1057%2Fhead;p=thirdparty%2Fsuricata.git

Fix engine getting stuck because of optimizations

At -O1+ in both Gcc and Clang, PacketPoolWait would optimize the
wait loop in the wrong way. Adding a compiler barrier to prevent
this optimization issue.
---

diff --git a/src/tmqh-packetpool.c b/src/tmqh-packetpool.c
index 1f7f5bd248..1f0a3ec7b9 100644
--- a/src/tmqh-packetpool.c
+++ b/src/tmqh-packetpool.c
@@ -151,7 +151,7 @@ void PacketPoolWait(void)
     PktPool *my_pool = GetThreadPacketPool();
 
     while(PacketPoolIsEmpty(my_pool))
-        ;
+        cc_barrier();
 }
 
 /** \brief a initialized packet