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

base/allocator/allocated_type_tcmalloc.cc

Index: base/allocator/allocated_type_tcmalloc.cc
diff --git a/base/allocator/allocated_type_tcmalloc.cc b/base/allocator/allocated_type_tcmalloc.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5677db87c5c6f37c99d6c2320fd19047f2ddbece
--- /dev/null
+++ b/base/allocator/allocated_type_tcmalloc.cc
@@ -0,0 +1,30 @@
+// 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 "allocated_type_control.h"
+#include "allocated_type.h"
+#include <gperftools/allocated_type_map.h>
+#include <gperftools/heap-profiler.h>
+
+void* __op_new_intercept__(void* ptr,
+                           size_t size,
+                           const std::type_info& type) {
+  if (IsAllocatedTypeInterceptEnabled()) {

[jar (doing other things), 2012/08/08 23:21:04]

Perhaps an alternative name, better mirroring the style of line 14, is:
IsTypeProfilerRunning()

[Dai Mikurube (NOT FULLTIME), 2012/08/09 10:23:54]

Done.

+    if (IsHeapProfilerRunning()) {
+      InsertAllocatedType(ptr, size, type);
+    }
+  }
+  return ptr;
+}
+
+void* __op_delete_intercept__(void* ptr,
+                              size_t size,
+                              const std::type_info& type) {
+  if (IsAllocatedTypeInterceptEnabled()) {
+    if (IsHeapProfilerRunning()) {
+      EraseAllocatedType(ptr);
+    }
+  }
+  return ptr;
+}