1// Copyright 2014 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#include "ppapi/nacl_irt/plugin_startup.h"
6
7#include "base/bind.h"
8#include "base/file_descriptor_posix.h"
9#include "base/logging.h"
10#include "base/synchronization/waitable_event.h"
11#include "base/threading/thread.h"
12#include "ipc/ipc_channel_handle.h"
13#include "ppapi/nacl_irt/manifest_service.h"
14#include "ppapi/shared_impl/ppb_audio_shared.h"
15
16namespace ppapi {
17namespace {
18
19int g_nacl_browser_ipc_fd = -1;
20int g_nacl_renderer_ipc_fd = -1;
21int g_manifest_service_fd = -1;
22
23base::WaitableEvent* g_shutdown_event = NULL;
24base::Thread* g_io_thread = NULL;
25ManifestService* g_manifest_service = NULL;
26
27// Creates the manifest service on IO thread so that its Listener's thread and
28// IO thread are shared. Upon completion of the manifest service creation,
29// event is signaled.
30void StartUpManifestServiceOnIOThread(base::WaitableEvent* event) {
31  // The start up must be called only once.
32  DCHECK(!g_manifest_service);
33  // manifest_service_fd must be set.
34  DCHECK_NE(g_manifest_service_fd, -1);
35  // IOThread and shutdown event must be initialized in advance.
36  DCHECK(g_io_thread);
37  DCHECK(g_shutdown_event);
38
39  g_manifest_service = new ManifestService(
40      IPC::ChannelHandle(
41          "NaCl IPC", base::FileDescriptor(g_manifest_service_fd, false)),
42      g_io_thread->message_loop_proxy(),
43      g_shutdown_event);
44  event->Signal();
45}
46
47}  // namespace
48
49void SetIPCFileDescriptors(
50    int browser_ipc_fd, int renderer_ipc_fd, int manifest_service_fd) {
51  // The initialization must be only once.
52  DCHECK_EQ(g_nacl_browser_ipc_fd, -1);
53  DCHECK_EQ(g_nacl_renderer_ipc_fd, -1);
54  DCHECK_EQ(g_manifest_service_fd, -1);
55  g_nacl_browser_ipc_fd = browser_ipc_fd;
56  g_nacl_renderer_ipc_fd = renderer_ipc_fd;
57  g_manifest_service_fd = manifest_service_fd;
58}
59
60void StartUpPlugin() {
61  // The start up must be called only once.
62  DCHECK(!g_shutdown_event);
63  DCHECK(!g_io_thread);
64
65  g_shutdown_event = new base::WaitableEvent(true, false);
66  g_io_thread = new base::Thread("Chrome_NaClIOThread");
67  g_io_thread->StartWithOptions(
68      base::Thread::Options(base::MessageLoop::TYPE_IO, 0));
69
70  if (g_manifest_service_fd != -1) {
71    // Manifest service must be created on IOThread so that the main message
72    // handling will be done on the thread, which has a message loop
73    // even before irt_ppapi_start invocation.
74    // TODO(hidehiko,dmichael): This works, but is probably not well designed
75    // usage. Once a better approach is made, replace this by that way.
76    // (crbug.com/364241).
77    base::WaitableEvent event(true, false);
78    g_io_thread->message_loop_proxy()->PostTask(
79        FROM_HERE,
80        base::Bind(StartUpManifestServiceOnIOThread, &event));
81    event.Wait();
82  }
83
84  PPB_Audio_Shared::SetNaClMode();
85}
86
87int GetBrowserIPCFileDescriptor() {
88  // The descriptor must be initialized in advance.
89  DCHECK_NE(g_nacl_browser_ipc_fd, -1);
90  return g_nacl_browser_ipc_fd;
91}
92
93int GetRendererIPCFileDescriptor() {
94  // The descriptor must be initialized in advance.
95  DCHECK_NE(g_nacl_renderer_ipc_fd, -1);
96  return g_nacl_renderer_ipc_fd;
97}
98
99base::WaitableEvent* GetShutdownEvent() {
100  // The shutdown event must be initialized in advance.
101  DCHECK(g_shutdown_event);
102  return g_shutdown_event;
103}
104
105base::Thread* GetIOThread() {
106  // The IOThread must be initialized in advance.
107  DCHECK(g_io_thread);
108  return g_io_thread;
109}
110
111ManifestService* GetManifestService() {
112  return g_manifest_service;
113}
114
115}  // namespace ppapi
116