1 files changed, 56 insertions, 0 deletions
diff --git a/base/allocator/allocator_extension.cc b/base/allocator/allocator_extension.cc
new file mode 100644
index 0000000000..83e460ac82
--- /dev/null
+++ b/base/allocator/allocator_extension.cc
@@ -0,0 +1,56 @@
+// 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 "base/allocator/allocator_extension.h"
+
+#include "base/logging.h"
+
+namespace base {
+namespace allocator {
+
+bool GetAllocatorWasteSize(size_t* size) {
+  thunks::GetAllocatorWasteSizeFunction get_allocator_waste_size_function =
+      thunks::GetGetAllocatorWasteSizeFunction();
+  return get_allocator_waste_size_function != NULL &&
+         get_allocator_waste_size_function(size);
+}
+
+void GetStats(char* buffer, int buffer_length) {
+  DCHECK_GT(buffer_length, 0);
+  thunks::GetStatsFunction get_stats_function = thunks::GetGetStatsFunction();
+  if (get_stats_function)
+    get_stats_function(buffer, buffer_length);
+  else
+    buffer[0] = '\0';
+}
+
+void ReleaseFreeMemory() {
+  thunks::ReleaseFreeMemoryFunction release_free_memory_function =
+      thunks::GetReleaseFreeMemoryFunction();
+  if (release_free_memory_function)
+    release_free_memory_function();
+}
+
+void SetGetAllocatorWasteSizeFunction(
+    thunks::GetAllocatorWasteSizeFunction get_allocator_waste_size_function) {
+  DCHECK_EQ(thunks::GetGetAllocatorWasteSizeFunction(),
+            reinterpret_cast<thunks::GetAllocatorWasteSizeFunction>(NULL));
+  thunks::SetGetAllocatorWasteSizeFunction(get_allocator_waste_size_function);
+}
+
+void SetGetStatsFunction(thunks::GetStatsFunction get_stats_function) {
+  DCHECK_EQ(thunks::GetGetStatsFunction(),
+            reinterpret_cast<thunks::GetStatsFunction>(NULL));
+  thunks::SetGetStatsFunction(get_stats_function);
+}
+
+void SetReleaseFreeMemoryFunction(
+    thunks::ReleaseFreeMemoryFunction release_free_memory_function) {
+  DCHECK_EQ(thunks::GetReleaseFreeMemoryFunction(),
+            reinterpret_cast<thunks::ReleaseFreeMemoryFunction>(NULL));
+  thunks::SetReleaseFreeMemoryFunction(release_free_memory_function);
+}
+
+}  // namespace allocator
+}  // namespace base