1// Copyright (c) 2013 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 CONTENT_RENDERER_PEPPER_HOST_DISPATCHER_WRAPPER_H_
6#define CONTENT_RENDERER_PEPPER_HOST_DISPATCHER_WRAPPER_H_
7
8#include "base/memory/ref_counted.h"
9#include "base/process/process_handle.h"
10#include "content/renderer/pepper/pepper_hung_plugin_filter.h"
11#include "ppapi/c/pp_instance.h"
12#include "ppapi/c/ppp.h"
13#include "ppapi/proxy/host_dispatcher.h"
14#include "ppapi/shared_impl/ppapi_permissions.h"
15
16namespace IPC {
17struct ChannelHandle;
18}
19
20namespace content {
21class PepperHungPluginFilter;
22class PluginModule;
23
24// This class wraps a dispatcher and has the same lifetime. A dispatcher has
25// the same lifetime as a plugin module, which is longer than any particular
26// RenderView or plugin instance.
27class HostDispatcherWrapper {
28 public:
29  HostDispatcherWrapper(PluginModule* module,
30                        base::ProcessId peer_pid,
31                        int plugin_child_id,
32                        const ppapi::PpapiPermissions& perms,
33                        bool is_external);
34  virtual ~HostDispatcherWrapper();
35
36  bool Init(const IPC::ChannelHandle& channel_handle,
37            PP_GetInterface_Func local_get_interface,
38            const ppapi::Preferences& preferences,
39            scoped_refptr<PepperHungPluginFilter> filter);
40
41  // Implements GetInterface for the proxied plugin.
42  const void* GetProxiedInterface(const char* name);
43
44  // Notification to the out-of-process layer that the given plugin instance
45  // has been created. This will happen before the normal PPB_Instance method
46  // calls so the out-of-process code can set up the tracking information for
47  // the new instance.
48  void AddInstance(PP_Instance instance);
49
50  // Like AddInstance but removes the given instance. This is called after
51  // regular instance shutdown so the out-of-process code can clean up its
52  // tracking information.
53  void RemoveInstance(PP_Instance instance);
54
55  base::ProcessId peer_pid() { return peer_pid_; }
56  int plugin_child_id() { return plugin_child_id_; }
57  ppapi::proxy::HostDispatcher* dispatcher() { return dispatcher_.get(); }
58
59 private:
60  PluginModule* module_;
61
62  base::ProcessId peer_pid_;
63
64  // ID that the browser process uses to idetify the child process for the
65  // plugin. This isn't directly useful from our process (the renderer) except
66  // in messages to the browser to disambiguate plugins.
67  int plugin_child_id_;
68
69  ppapi::PpapiPermissions permissions_;
70  bool is_external_;
71
72  scoped_ptr<ppapi::proxy::HostDispatcher> dispatcher_;
73  scoped_ptr<ppapi::proxy::ProxyChannel::Delegate> dispatcher_delegate_;
74  // We hold the hung_plugin_filter_ to guarantee it outlives |dispatcher_|,
75  // since it is an observer of |dispatcher_| for sync calls.
76  scoped_refptr<PepperHungPluginFilter> hung_plugin_filter_;
77};
78
79}  // namespace content
80
81#endif  // CONTENT_RENDERER_PEPPER_HOST_DISPATCHER_WRAPPER_H_
82