WIP: Prototype OOP V8 PAC.

content/browser/process_resource_impl.h

+// Copyright 2015 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.
+
+#ifndef CONTENT_BROWSER_PROCESS_RESOURCE_IMPL_H_
+#define CONTENT_BROWSER_PROCESS_RESOURCE_IMPL_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/synchronization/lock.h"
+#include "content/public/common/process_resource_service.mojom.h"
+#include "content/public/browser/process_resource.h"
+
+namespace content {
+
+// This class lives on the IO thread.
+class CONTENT_EXPORT ProcessResourceImpl : public ProcessResource {
+ public:
+  explicit ProcessResourceImpl(ProcessResourceServicePtr service);
+
+  // ProcessResource implementation. Call from any thread.
+  void Refresh() override;
+  bool ReportsV8MemoryStats() const override;
+  size_t GetV8MemoryAllocated() const override;
+  size_t GetV8MemoryUsed() const override;
+
+ private:
+  ~ProcessResourceImpl() override;
+
+  // Run on IO thread.
+  void RefreshOnIOThread();
+  void OnGetResourceDataDone(ResourceDataPtr data);
+
+  // Always accessed on IO thread.
+  ProcessResourceServicePtr service_;
+  bool update_in_progress_;
+
+  // Accessed on any thread.
+  mutable base::Lock lock_;
+  ResourceDataPtr stats_;
+
+  DISALLOW_COPY_AND_ASSIGN(ProcessResourceImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_PROCESS_RESOURCE_IMPL_H_