base: Discardable memory types.

base/memory/discardable_memory.cc

Index: base/memory/discardable_memory.cc
diff --git a/base/memory/discardable_memory.cc b/base/memory/discardable_memory.cc
new file mode 100644
index 0000000000000000000000000000000000000000..74830aefe9800be7866ec9c532b4125d2b556b1d
--- /dev/null
+++ b/base/memory/discardable_memory.cc
@@ -0,0 +1,34 @@
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.

[Philippe, 2013/12/17 14:28:21]

Nit: I believe there is no '(c)' anymore for new files.

[reveman, 2013/12/18 08:12:38]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/memory/discardable_memory.h"
+
+#include "base/lazy_instance.h"
+
+namespace base {
+namespace {
+
+struct DiscardableMemoryTypeInitializedWithPreferredValue {
+  DiscardableMemoryTypeInitializedWithPreferredValue()
+      : v(DiscardableMemory::GetSupportedTypes().front()) {
+  }
+
+  DiscardableMemoryType v;

[Philippe, 2013/12/17 14:28:21]

Nit: maybe call this 'value' or 'type'.

[reveman, 2013/12/18 08:12:38]

Done.

+};
+LazyInstance<DiscardableMemoryTypeInitializedWithPreferredValue>::Leaky
+    g_discardable_memory_type = LAZY_INSTANCE_INITIALIZER;
+
+}  // namespace
+
+// static
+void DiscardableMemory::SetType(DiscardableMemoryType type) {
+  g_discardable_memory_type.Get().v = type;
+}
+
+// static
+DiscardableMemoryType DiscardableMemory::GetType() {
+  return g_discardable_memory_type.Get().v;
+}
+
+}  // namespace base