From: des <des@d4fa192b-c00b-0410-8231-f00ffab90ce4>
Date: Sat, 2 Feb 2008 10:58:05 +0000 (+0000)
Subject: Add an ALOCKED() macro which asserts that a mutex is locked.  Unfortunately,
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=499c372dd233a37b74e8774607aad013355a3f23;p=varnish

Add an ALOCKED() macro which asserts that a mutex is locked.  Unfortunately,
there is no portable way to do this, so we have to fake it by trying to lock
the mutex and assert that it fails.  This can be very expensive, so we only
do it when built with --enable-diagnostics.


git-svn-id: svn+ssh://projects.linpro.no/svn/varnish/trunk@2416 d4fa192b-c00b-0410-8231-f00ffab90ce4
---

diff --git a/varnish-cache/bin/varnishd/cache.h b/varnish-cache/bin/varnishd/cache.h
index 787fca98..a3a34d69 100644
--- a/varnish-cache/bin/varnishd/cache.h
+++ b/varnish-cache/bin/varnishd/cache.h
@@ -657,6 +657,12 @@ do {							\
 } while (0);
 #endif
 
+#ifdef DIAGNOSTICS
+#define ALOCKED(foo)		AN(pthread_mutex_trylock(foo))
+#else
+#define ALOCKED(foo)		(void)(foo)
+#endif
+
 /*
  * A normal pointer difference is signed, but we never want a negative value
  * so this little tool will make sure we don't get that.