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1 // Copyright (c) 2012 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 "content/worker/worker_thread.h" | |
6 | |
7 #include "base/command_line.h" | |
8 #include "base/lazy_instance.h" | |
9 #include "base/threading/thread_local.h" | |
10 #include "content/child/appcache/appcache_dispatcher.h" | |
11 #include "content/child/appcache/appcache_frontend_impl.h" | |
12 #include "content/child/db_message_filter.h" | |
13 #include "content/child/indexed_db/indexed_db_message_filter.h" | |
14 #include "content/child/runtime_features.h" | |
15 #include "content/child/web_database_observer_impl.h" | |
16 #include "content/common/child_process_messages.h" | |
17 #include "content/common/worker_messages.h" | |
18 #include "content/public/common/content_switches.h" | |
19 #include "content/worker/websharedworker_stub.h" | |
20 #include "content/worker/worker_webkitplatformsupport_impl.h" | |
21 #include "ipc/ipc_sync_channel.h" | |
22 #include "third_party/WebKit/public/platform/WebBlobRegistry.h" | |
23 #include "third_party/WebKit/public/web/WebDatabase.h" | |
24 #include "third_party/WebKit/public/web/WebKit.h" | |
25 #include "third_party/WebKit/public/web/WebRuntimeFeatures.h" | |
26 #include "v8/include/v8.h" | |
27 | |
28 using blink::WebRuntimeFeatures; | |
29 | |
30 namespace content { | |
31 | |
32 static base::LazyInstance<base::ThreadLocalPointer<WorkerThread> > lazy_tls = | |
33 LAZY_INSTANCE_INITIALIZER; | |
34 | |
35 WorkerThread::WorkerThread() { | |
36 lazy_tls.Pointer()->Set(this); | |
37 webkit_platform_support_.reset(new WorkerWebKitPlatformSupportImpl( | |
38 thread_safe_sender(), | |
39 sync_message_filter(), | |
40 quota_message_filter())); | |
41 | |
42 const CommandLine& command_line = *CommandLine::ForCurrentProcess(); | |
43 if (command_line.HasSwitch(switches::kJavaScriptFlags)) { | |
44 std::string flags( | |
45 command_line.GetSwitchValueASCII(switches::kJavaScriptFlags)); | |
46 v8::V8::SetFlagsFromString(flags.c_str(), static_cast<int>(flags.size())); | |
47 } | |
48 SetRuntimeFeaturesDefaultsAndUpdateFromArgs(command_line); | |
49 | |
50 blink::initialize(webkit_platform_support_.get()); | |
51 | |
52 appcache_dispatcher_.reset( | |
53 new AppCacheDispatcher(this, new AppCacheFrontendImpl())); | |
54 | |
55 db_message_filter_ = new DBMessageFilter(); | |
56 channel()->AddFilter(db_message_filter_.get()); | |
57 | |
58 indexed_db_message_filter_ = new IndexedDBMessageFilter( | |
59 thread_safe_sender()); | |
60 channel()->AddFilter(indexed_db_message_filter_->GetFilter()); | |
61 | |
62 } | |
63 | |
64 void WorkerThread::OnShutdown() { | |
65 // The worker process is to be shut down gracefully. Ask the browser | |
66 // process to shut it down forcefully instead and wait on the message, so that | |
67 // there are no races between threads when the process is shutting down. | |
68 Send(new WorkerProcessHostMsg_ForceKillWorker()); | |
69 } | |
70 | |
71 WorkerThread::~WorkerThread() { | |
72 } | |
73 | |
74 void WorkerThread::Shutdown() { | |
75 ChildThread::Shutdown(); | |
76 | |
77 if (webkit_platform_support_) { | |
78 webkit_platform_support_->web_database_observer_impl()-> | |
79 WaitForAllDatabasesToClose(); | |
80 } | |
81 | |
82 // Shutdown in reverse of the initialization order. | |
83 indexed_db_message_filter_ = NULL; | |
84 | |
85 channel()->RemoveFilter(db_message_filter_.get()); | |
86 db_message_filter_ = NULL; | |
87 | |
88 blink::shutdown(); | |
89 lazy_tls.Pointer()->Set(NULL); | |
90 } | |
91 | |
92 WorkerThread* WorkerThread::current() { | |
93 return lazy_tls.Pointer()->Get(); | |
94 } | |
95 | |
96 bool WorkerThread::OnControlMessageReceived(const IPC::Message& msg) { | |
97 // Appcache messages are handled by a delegate. | |
98 if (appcache_dispatcher_->OnMessageReceived(msg)) | |
99 return true; | |
100 | |
101 bool handled = true; | |
102 IPC_BEGIN_MESSAGE_MAP(WorkerThread, msg) | |
103 IPC_MESSAGE_HANDLER(WorkerProcessMsg_CreateWorker, OnCreateWorker) | |
104 IPC_MESSAGE_UNHANDLED(handled = false) | |
105 IPC_END_MESSAGE_MAP() | |
106 return handled; | |
107 } | |
108 | |
109 bool WorkerThread::OnMessageReceived(const IPC::Message& msg) { | |
110 bool handled = true; | |
111 IPC_BEGIN_MESSAGE_MAP(WorkerThread, msg) | |
112 IPC_MESSAGE_HANDLER(ChildProcessMsg_Shutdown, OnShutdown) | |
113 IPC_MESSAGE_UNHANDLED(handled = ChildThread::OnMessageReceived(msg)) | |
114 IPC_END_MESSAGE_MAP() | |
115 return handled; | |
116 } | |
117 | |
118 void WorkerThread::OnCreateWorker( | |
119 const WorkerProcessMsg_CreateWorker_Params& params) { | |
120 // WebSharedWorkerStub own themselves. | |
121 new WebSharedWorkerStub( | |
122 params.url, | |
123 params.name, | |
124 params.content_security_policy, | |
125 params.security_policy_type, | |
126 params.pause_on_start, | |
127 params.route_id); | |
128 } | |
129 | |
130 // The browser process is likely dead. Terminate all workers. | |
131 void WorkerThread::OnChannelError() { | |
132 set_on_channel_error_called(true); | |
133 | |
134 for (WorkerStubsList::iterator it = worker_stubs_.begin(); | |
135 it != worker_stubs_.end(); ++it) { | |
136 (*it)->OnChannelError(); | |
137 } | |
138 } | |
139 | |
140 void WorkerThread::RemoveWorkerStub(WebSharedWorkerStub* stub) { | |
141 worker_stubs_.erase(stub); | |
142 } | |
143 | |
144 void WorkerThread::AddWorkerStub(WebSharedWorkerStub* stub) { | |
145 worker_stubs_.insert(stub); | |
146 } | |
147 | |
148 } // namespace content | |
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