Add asserts to help catch double refs and double derefs of CachedResources.

        Reviewed by mjs

        * loader/CachedResource.cpp:
        (WebCore::CachedResource::ref):
        (WebCore::CachedResource::deref):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@20199 268f45cc-cd09-0410-ab3c-d52691b4dbfc

WebCore/ChangeLog

+2007-03-14  David Hyatt  <hyatt@apple.com>
+
+        Add asserts to help catch double refs and double derefs of CachedResources.
+
+        Reviewed by mjs
+
+        * loader/CachedResource.cpp:
+        (WebCore::CachedResource::ref):
+        (WebCore::CachedResource::deref):
+
 2007-03-14  Alice Liu  <alice.liu@apple.com>
         Rubber-stamped by Hyatt.

WebCore/loader/CachedResource.cpp

@@ -94,6 +94,7 @@ void CachedResource::setRequest(Request* request)
 
 void CachedResource::ref(CachedResourceClient *c)
 {
+    ASSERT(!m_clients.contains(c));
     if (!referenced() && inCache())
         cache()->addToLiveObjectSize(size());
     m_clients.add(c);
@@ -101,6 +102,7 @@ void CachedResource::ref(CachedResourceClient *c)
 
 void CachedResource::deref(CachedResourceClient *c)
 {
+    ASSERT(m_clients.contains(c));
     m_clients.remove(c);
     if (canDelete() && !inCache())
         delete this;