Imported WebKit commit 2ea9d364d0f6efa8fa64acf19f451504c59be0e4 (http://svn.webkit.org/repository/webkit/trunk@104285)

1 files changed, 92 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/wtf/RefCountedLeakCounter.cpp b/Source/JavaScriptCore/wtf/RefCountedLeakCounter.cpp
new file mode 100644
index 000000000..670f2a0ce
--- /dev/null
+++ b/Source/JavaScriptCore/wtf/RefCountedLeakCounter.cpp
@@ -0,0 +1,92 @@
+/*
+ *  Copyright (C) 2008 Apple Inc. All rights reserved.
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Library General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2 of the License, or (at your option) any later version.
+ *
+ *  This library is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ *  Library General Public License for more details.
+ *
+ *  You should have received a copy of the GNU Library General Public License
+ *  along with this library; see the file COPYING.LIB.  If not, write to
+ *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ *  Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "config.h"
+#include "RefCountedLeakCounter.h"
+
+#include <wtf/HashCountedSet.h>
+
+namespace WTF {
+
+#ifdef NDEBUG
+
+void RefCountedLeakCounter::suppressMessages(const char*) { }
+void RefCountedLeakCounter::cancelMessageSuppression(const char*) { }
+
+RefCountedLeakCounter::RefCountedLeakCounter(const char*) { }
+RefCountedLeakCounter::~RefCountedLeakCounter() { }
+
+void RefCountedLeakCounter::increment() { }
+void RefCountedLeakCounter::decrement() { }
+
+#else
+
+#define LOG_CHANNEL_PREFIX Log
+static WTFLogChannel LogRefCountedLeaks = { 0x00000000, "", WTFLogChannelOn };
+
+typedef HashCountedSet<const char*, PtrHash<const char*> > ReasonSet;
+static ReasonSet* leakMessageSuppressionReasons;
+
+void RefCountedLeakCounter::suppressMessages(const char* reason)
+{
+    if (!leakMessageSuppressionReasons)
+        leakMessageSuppressionReasons = new ReasonSet;
+    leakMessageSuppressionReasons->add(reason);
+}
+
+void RefCountedLeakCounter::cancelMessageSuppression(const char* reason)
+{
+    ASSERT(leakMessageSuppressionReasons);
+    ASSERT(leakMessageSuppressionReasons->contains(reason));
+    leakMessageSuppressionReasons->remove(reason);
+}
+
+RefCountedLeakCounter::RefCountedLeakCounter(const char* description)
+    : m_description(description)
+{
+}    
+
+RefCountedLeakCounter::~RefCountedLeakCounter()
+{
+    static bool loggedSuppressionReason;
+    if (m_count) {
+        if (!leakMessageSuppressionReasons || leakMessageSuppressionReasons->isEmpty())
+            LOG(RefCountedLeaks, "LEAK: %u %s", m_count, m_description);
+        else if (!loggedSuppressionReason) {
+            // This logs only one reason. Later we could change it so we log all the reasons.
+            LOG(RefCountedLeaks, "No leak checking done: %s", leakMessageSuppressionReasons->begin()->first);
+            loggedSuppressionReason = true;
+        }
+    }
+}
+
+void RefCountedLeakCounter::increment()
+{
+    atomicIncrement(&m_count);
+}
+
+void RefCountedLeakCounter::decrement()
+{
+    atomicDecrement(&m_count);
+}
+
+#endif
+
+} // namespace WTF