Mojo: AsyncWaiter and mojo/public/environment

mojo/public/environment/standalone/buffer_tls.cc

+// Copyright 2014 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 "mojo/public/environment/buffer_tls.h"
+
+#include "mojo/public/environment/standalone/buffer_tls_setup.h"
+#include "mojo/public/utility/thread_local.h"
+
+namespace mojo {
+namespace internal {
+
+static ThreadLocalPlatform::SlotType s_slot;
+
+void SetUpCurrentBuffer() {
+  ThreadLocalPlatform::AllocateSlot(&s_slot);
+}
+
+void TearDownCurrentBuffer() {
+  ThreadLocalPlatform::FreeSlot(s_slot);
+}
+
+Buffer* GetCurrentBuffer() {
+  return static_cast<Buffer*>(ThreadLocalPlatform::GetValueFromSlot(s_slot));
+}
+
+Buffer* SetCurrentBuffer(Buffer* buf) {
+  Buffer* old_buf = GetCurrentBuffer();
+  ThreadLocalPlatform::SetValueInSlot(s_slot, buf);
+  return old_buf;
+}
+
+}  // namespace internal
+}  // namespace mojo