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render_sandbox_host_linux.h

// Copyright (c) 2009 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.

// http://code.google.com/p/chromium/wiki/LinuxSandboxIPC

#ifndef CHROME_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_
#define CHROME_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_

#include <string>

#include "base/logging.h"
#include "base/singleton.h"

// This is a singleton object which handles sandbox requests from the
// renderers.
class RenderSandboxHostLinux {
 public:
  // Get the file descriptor which renderers should be given in order to signal
  // crashes to the browser.
  int GetRendererSocket() const {
    DCHECK(init_);
    return renderer_socket_;
  }
  pid_t pid() const {
    DCHECK(init_);
    return pid_;
  }
  void Init(const std::string& sandbox_path);

 private:
  friend struct DefaultSingletonTraits<RenderSandboxHostLinux>;
  // This object must be constructed on the main thread.
  RenderSandboxHostLinux();
  ~RenderSandboxHostLinux();

  bool init_;
  int renderer_socket_;
  int childs_lifeline_fd_;
  pid_t pid_;

  DISALLOW_COPY_AND_ASSIGN(RenderSandboxHostLinux);
};

#endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_SANDBOX_HOST_LINUX_H_

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