1// Copyright (c) 2011 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_NACL_HOST_NACL_PROCESS_HOST_H_
6#define CHROME_BROWSER_NACL_HOST_NACL_PROCESS_HOST_H_
7#pragma once
8
9#include "build/build_config.h"
10
11#include "base/memory/ref_counted.h"
12#include "chrome/common/nacl_types.h"
13#include "content/browser/browser_child_process_host.h"
14
15class ChromeRenderMessageFilter;
16
17// Represents the browser side of the browser <--> NaCl communication
18// channel. There will be one NaClProcessHost per NaCl process
19// The browser is responsible for starting the NaCl process
20// when requested by the renderer.
21// After that, most of the communication is directly between NaCl plugin
22// running in the renderer and NaCl processes.
23class NaClProcessHost : public BrowserChildProcessHost {
24 public:
25  explicit NaClProcessHost(const std::wstring& url);
26  ~NaClProcessHost();
27
28  // Initialize the new NaCl process, returning true on success.
29  bool Launch(ChromeRenderMessageFilter* chrome_render_message_filter,
30              int socket_count,
31              IPC::Message* reply_msg);
32
33  virtual bool OnMessageReceived(const IPC::Message& msg);
34
35  void OnProcessLaunchedByBroker(base::ProcessHandle handle);
36
37 protected:
38  virtual base::TerminationStatus GetChildTerminationStatus(int* exit_code);
39  virtual void OnChildDied();
40
41 private:
42  // Internal class that holds the nacl::Handle objecs so that
43  // nacl_process_host.h doesn't include NaCl headers.  Needed since it's
44  // included by src\content, which can't depend on the NaCl gyp file because it
45  // depends on chrome.gyp (circular dependency).
46  struct NaClInternal;
47
48  bool LaunchSelLdr();
49
50  void SendStartMessage();
51
52  virtual void OnProcessLaunched();
53
54  virtual bool CanShutdown();
55
56 private:
57  // The ChromeRenderMessageFilter that requested this NaCl process.  We use
58  // this for sending the reply once the process has started.
59  scoped_refptr<ChromeRenderMessageFilter> chrome_render_message_filter_;
60
61  // The reply message to send.
62  IPC::Message* reply_msg_;
63
64  // Socket pairs for the NaCl process and renderer.
65  scoped_ptr<NaClInternal> internal_;
66
67  // Windows platform flag
68  bool running_on_wow64_;
69
70  DISALLOW_COPY_AND_ASSIGN(NaClProcessHost);
71};
72
73#endif  // CHROME_BROWSER_NACL_HOST_NACL_PROCESS_HOST_H_
74