Add a ClassTracker class to more easily track leaks

bug:3376517
Change-Id: Ieb419bc3140963ccbda3e2f130778ec53b2920aa

1 files changed, 74 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/android/ClassTracker.cpp b/WebCore/platform/graphics/android/ClassTracker.cpp
new file mode 100644
index 0000000..ad2b4dd
--- /dev/null
+++ b/WebCore/platform/graphics/android/ClassTracker.cpp
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2010, The Android Open Source Project
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "ClassTracker.h"
+
+#include <cutils/log.h>
+#include <wtf/CurrentTime.h>
+#include <wtf/text/CString.h>
+
+#undef XLOG
+#define XLOG(...) android_printLog(ANDROID_LOG_DEBUG, "ClassTracker", __VA_ARGS__)
+
+namespace WebCore {
+
+ClassTracker* ClassTracker::instance()
+{
+    if (!gInstance)
+        gInstance = new ClassTracker();
+    return gInstance;
+}
+
+ClassTracker* ClassTracker::gInstance = 0;
+
+void ClassTracker::increment(String name)
+{
+   int value = 0;
+   if (m_classes.contains(name))
+       value = m_classes.get(name);
+
+   m_classes.set(name, value + 1);
+}
+
+void ClassTracker::decrement(String name)
+{
+   int value = 0;
+   if (m_classes.contains(name))
+       value = m_classes.get(name);
+
+   m_classes.set(name, value - 1);
+}
+
+void ClassTracker::show()
+{
+   XLOG("*** Tracking %d classes ***", m_classes.size());
+   for (HashMap<String, int>::iterator iter = m_classes.begin(); iter != m_classes.end(); ++iter) {
+       XLOG("class %s has %d instances",
+            iter->first.latin1().data(), iter->second);
+   }
+}
+
+} // namespace WebCore