content/worker/worker_thread.cc

   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/common/appcache/appcache_dispatcher.h"
  11 #include "content/common/db_message_filter.h"
  12 #include "content/common/indexed_db/indexed_db_message_filter.h"
  13 #include "content/common/web_database_observer_impl.h"
  14 #include "content/common/worker_messages.h"
  15 #include "content/public/common/content_switches.h"
  16 #include "content/worker/websharedworker_stub.h"
  17 #include "content/worker/worker_webkitplatformsupport_impl.h"
  18 #include "ipc/ipc_sync_channel.h"
  19 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebBlobRegistry.h"
  20 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDatabase.h"
  21 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
  22 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRuntimeFeatures.h"
  23 #include "webkit/glue/webkit_glue.h"
  24
  25 using WebKit::WebRuntimeFeatures;
  26
  27 namespace content {
  28
  29 static base::LazyInstance<base::ThreadLocalPointer<WorkerThread> > lazy_tls =
  30     LAZY_INSTANCE_INITIALIZER;
  31
  32 WorkerThread::WorkerThread() {
  33   lazy_tls.Pointer()->Set(this);
  34   webkit_platform_support_.reset(new WorkerWebKitPlatformSupportImpl);
  35   WebKit::initialize(webkit_platform_support_.get());
  36
  37   appcache_dispatcher_.reset(new content::AppCacheDispatcher(this));
  38
  39   web_database_observer_impl_.reset(
  40       new WebDatabaseObserverImpl(sync_message_filter()));
  41   WebKit::WebDatabase::setObserver(web_database_observer_impl_.get());
  42   db_message_filter_ = new DBMessageFilter();
  43   channel()->AddFilter(db_message_filter_.get());
  44
  45   indexed_db_message_filter_ = new content::IndexedDBMessageFilter;
  46   channel()->AddFilter(indexed_db_message_filter_.get());
  47
  48   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
  49
  50   webkit_glue::EnableWebCoreLogChannels(
  51       command_line.GetSwitchValueASCII(switches::kWebCoreLogChannels));
  52
  53   WebKit::WebRuntimeFeatures::enableDatabase(
  54       !command_line.HasSwitch(switches::kDisableDatabases));
  55
  56   WebKit::WebRuntimeFeatures::enableApplicationCache(
  57       !command_line.HasSwitch(switches::kDisableApplicationCache));
  58
  59 #if defined(OS_WIN)
  60   // We don't yet support notifications on non-Windows, so hide it from pages.
  61   WebRuntimeFeatures::enableNotifications(
  62       !command_line.HasSwitch(switches::kDisableDesktopNotifications));
  63 #endif
  64
  65   WebRuntimeFeatures::enableSockets(
  66       !command_line.HasSwitch(switches::kDisableWebSockets));
  67
  68   WebRuntimeFeatures::enableFileSystem(
  69       !command_line.HasSwitch(switches::kDisableFileSystem));
  70
  71   WebRuntimeFeatures::enableIndexedDatabase(true);
  72 }
  73
  74 WorkerThread::~WorkerThread() {
  75   // Shutdown in reverse of the initialization order.
  76   channel()->RemoveFilter(indexed_db_message_filter_.get());
  77   indexed_db_message_filter_ = NULL;
  78
  79   channel()->RemoveFilter(db_message_filter_.get());
  80   db_message_filter_ = NULL;
  81
  82   WebKit::shutdown();
  83   lazy_tls.Pointer()->Set(NULL);
  84 }
  85
  86 WorkerThread* WorkerThread::current() {
  87   return lazy_tls.Pointer()->Get();
  88 }
  89
  90 bool WorkerThread::OnControlMessageReceived(const IPC::Message& msg) {
  91   // Appcache messages are handled by a delegate.
  92   if (appcache_dispatcher_->OnMessageReceived(msg))
  93     return true;
  94
  95   bool handled = true;
  96   IPC_BEGIN_MESSAGE_MAP(WorkerThread, msg)
  97     IPC_MESSAGE_HANDLER(WorkerProcessMsg_CreateWorker, OnCreateWorker)
  98     IPC_MESSAGE_UNHANDLED(handled = false)
  99   IPC_END_MESSAGE_MAP()
 100   return handled;
 101 }
 102
 103 void WorkerThread::OnCreateWorker(
 104     const WorkerProcessMsg_CreateWorker_Params& params) {
 105   WorkerAppCacheInitInfo appcache_init_info(
 106       params.creator_process_id,
 107       params.shared_worker_appcache_id);
 108
 109   // WebSharedWorkerStub own themselves.
 110   new WebSharedWorkerStub(params.name, params.route_id, appcache_init_info);
 111 }
 112
 113 // The browser process is likely dead. Terminate all workers.
 114 void WorkerThread::OnChannelError() {
 115   set_on_channel_error_called(true);
 116
 117   for (WorkerStubsList::iterator it = worker_stubs_.begin();
 118        it != worker_stubs_.end(); ++it) {
 119     (*it)->OnChannelError();
 120   }
 121 }
 122
 123 void WorkerThread::RemoveWorkerStub(WebSharedWorkerStub* stub) {
 124   worker_stubs_.erase(stub);
 125 }
 126
 127 void WorkerThread::AddWorkerStub(WebSharedWorkerStub* stub) {
 128   worker_stubs_.insert(stub);
 129 }
 130
 131 }  // namespace content