Type profiler by intercepting 'new' and 'delete' expressions.

base/allocator/new_delete_type_tcmalloc.cc

Index: base/allocator/new_delete_type_tcmalloc.cc
diff --git a/base/allocator/new_delete_type_tcmalloc.cc b/base/allocator/new_delete_type_tcmalloc.cc
new file mode 100644
index 0000000000000000000000000000000000000000..1c9539b643feb1561d45349146e883c13fe6847f
--- /dev/null
+++ b/base/allocator/new_delete_type_tcmalloc.cc
@@ -0,0 +1,32 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "new_delete_type.h"
+#include <gperftools/allocated_type_map.h>
+
+void* operator new(size_t size, const std::type_info& t) {
+  void* address = ::operator new(size);
+  InsertAllocatedType(address, t);
+  return address;
+}
+
+void operator delete(void* address, const std::type_info &t) {
+  // We can make sure that LookupAllocatedType is working.
+  // const std::type_info* allocated_type = LookupAllocatedType(address);
+  EraseAllocatedType(address);
+  ::operator delete(address);
+}
+
+void* operator new[](size_t size, const std::type_info& t) {
+  void* address = ::operator new(size);
+  InsertAllocatedType(address, t);
+  return address;
+}
+
+void operator delete[](void* address, const std::type_info &t) {
+  // We can make sure that LookupAllocatedType is working.
+  // const std::type_info* allocated_type = LookupAllocatedType(address);
+  EraseAllocatedType(address);
+  ::operator delete(address);
+}