Limit live Document tracking to debug builds.

third_party/WebKit/Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 224 matching lines @@
 #include "wtf/HashFunctions.h"
 #include "wtf/PtrUtil.h"
 #include "wtf/StdLibExtras.h"
 #include "wtf/TemporaryChange.h"
 #include "wtf/text/StringBuffer.h"
 #include "wtf/text/TextEncodingRegistry.h"
 
 using namespace WTF;
 using namespace Unicode;
 
+#ifndef NDEBUG
+using WeakDocumentSet = blink::PersistentHeapHashSet<blink::WeakMember<blink::Document>>;
+static WeakDocumentSet& liveDocumentSet();
+#endif
+
 namespace blink {
 
 using namespace HTMLNames;
 
 static const unsigned cMaxWriteRecursionDepth = 21;
 
 // This amount of time must have elapsed before we will even consider scheduling a layout without a delay.
 // FIXME: For faster machines this value can really be lowered to 200.  250 is adequate, but a little high
 // for dual G5s. :)
 static const int cLayoutScheduleThreshold = 250;
@@ skipping 105 matching lines @@
         return true;
     if (errorMessage)
         *errorMessage = origin->isPotentiallyTrustworthyErrorMessage();
     return false;
 }
 
 uint64_t Document::s_globalTreeVersion = 0;
 
 static bool s_threadedParsingEnabledForTesting = true;
 
-using WeakDocumentSet = PersistentHeapHashSet<WeakMember<Document>>;
-
-static WeakDocumentSet& liveDocumentSet()
-{
-    DEFINE_STATIC_LOCAL(WeakDocumentSet, set, ());
-    return set;
-}
-
 // This class doesn't work with non-Document ExecutionContext.
 class AutofocusTask final : public ExecutionContextTask {
 public:
     static std::unique_ptr<AutofocusTask> create()
     {
         return wrapUnique(new AutofocusTask());
     }
     ~AutofocusTask() override { }
 
 private:
@@ skipping 119 matching lines @@
     // CSSFontSelector, need to initialize m_styleEngine after initializing
     // m_fetcher.
     m_styleEngine = StyleEngine::create(*this);
 
     // The parent's parser should be suspended together with all the other objects,
     // else this new Document would have a new ExecutionContext which suspended state
     // would not match the one from the parent, and could start loading resources
     // ignoring the defersLoading flag.
     DCHECK(!parentDocument() || !parentDocument()->activeDOMObjectsAreSuspended());
 
+#ifndef NDEBUG
     liveDocumentSet().add(this);
+#endif
 }
 
 Document::~Document()
 {
     DCHECK(!layoutView());
     DCHECK(!parentTreeScope());
     // If a top document with a cache, verify that it was comprehensively
     // cleared during detach.
     DCHECK(!m_axObjectCache);
     InstanceCounters::decrementCounter(InstanceCounters::DocumentCounter);
@@ skipping 5461 matching lines @@
     }
     ContainerNode::traceWrappers(visitor);
 }
 
 template class CORE_TEMPLATE_EXPORT Supplement<Document>;
 
 } // namespace blink
 
 #ifndef NDEBUG
 using namespace blink;
+
+static WeakDocumentSet& liveDocumentSet()
+{
+    DEFINE_STATIC_LOCAL(WeakDocumentSet, set, ());
+    return set;
+}
+
 void showLiveDocumentInstances()
 {
     WeakDocumentSet& set = liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().getString().utf8().data());
 }
 #endif