child_thread.cc revision d0247b1b59f9c528cb6df88b4f2b9afaf80d181e
15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_thread.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/allocator/allocator_extension.h" 87dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include "base/base_switches.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/command_line.h" 10eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/lazy_instance.h" 119ab5563a3196760eb381d102cbb2bc0f7abc6a50Ben Murdoch#include "base/message_loop/message_loop.h" 1258e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdoch#include "base/process/kill.h" 1358e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdoch#include "base/process/process_handle.h" 14868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/string_util.h" 15eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/threading/thread_local.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/tracked_objects.h" 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "components/tracing/child_trace_message_filter.h" 18868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_histogram_message_filter.h" 19868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_process.h" 20868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_resource_message_filter.h" 21868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/fileapi/file_system_dispatcher.h" 22a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)#include "content/child/power_monitor_broadcast_source.h" 23868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/quota_dispatcher.h" 24558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch#include "content/child/quota_message_filter.h" 25868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/resource_dispatcher.h" 26868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/socket_stream_dispatcher.h" 27868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/thread_safe_sender.h" 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/common/child_process_messages.h" 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/common/content_switches.h" 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_logging.h" 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_switches.h" 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_sync_channel.h" 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_sync_message_filter.h" 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "webkit/glue/webkit_glue.h" 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/common/handle_enumerator_win.h" 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 40bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED) 41bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h" 42bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#endif 43bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using tracked_objects::ThreadData; 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// How long to wait for a connection to the browser process before giving up. 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const int kConnectionTimeoutS = 15; 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 52eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochbase::LazyInstance<base::ThreadLocalPointer<ChildThread> > g_lazy_tls = 53eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch LAZY_INSTANCE_INITIALIZER; 54eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This isn't needed on Windows because there the sandbox's job object 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// terminates child processes automatically. For unsandboxed processes (i.e. 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// plugins), PluginThread has EnsureTerminateMessageFilter. 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_POSIX) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class SuicideOnChannelErrorFilter : public IPC::ChannelProxy::MessageFilter { 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // IPC::ChannelProxy::MessageFilter 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnChannelError() OVERRIDE { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For renderer/worker processes: 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On POSIX, at least, one can install an unload handler which loops 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // forever and leave behind a renderer process which eats 100% CPU forever. 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This is because the terminate signals (ViewMsg_ShouldClose and the error 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // from the IPC channel) are routed to the main message loop but never 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // processed (because that message loop is stuck in V8). 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // One could make the browser SIGKILL the renderers, but that leaves open a 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // large window where a browser failure (or a user, manually terminating 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the browser because "it's stuck") will leave behind a process eating all 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the CPU. 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // So, we install a filter on the channel so that we can process this event 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // here and kill the process. 79a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) if (CommandLine::ForCurrentProcess()-> 80a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) HasSwitch(switches::kChildCleanExit)) { 81a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // If clean exit is requested, we want to kill this process after giving 82a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // it 60 seconds to run exit handlers. Exit handlers may including ones 83a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // that write profile data to disk (which happens under profile collection 84a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // mode). 85a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) alarm(60); 86a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) } else { 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) _exit(0); 88a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) } 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~SuicideOnChannelErrorFilter() {} 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // OS(POSIX) 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 97eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#if defined(OS_ANDROID) 98eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen MurdochChildThread* g_child_thread; 99eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 100eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochvoid QuitMainThreadMessageLoop() { 101eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch base::MessageLoop::current()->Quit(); 102eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch} 103eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 104eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 105eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread::ChildThread() 109c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) : channel_connected_factory_(this) { 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_name_ = CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switches::kProcessChannelID); 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Init(); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread::ChildThread(const std::string& channel_name) 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : channel_name_(channel_name), 117c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) channel_connected_factory_(this) { 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Init(); 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::Init() { 122eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_lazy_tls.Pointer()->Set(this); 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) on_channel_error_called_ = false; 124c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) message_loop_ = base::MessageLoop::current(); 125d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 126d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // We must make sure to instantiate the IPC Logger *before* we create the 127d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // channel, otherwise we can get a callback on the IO thread which creates 128d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // the logger, and the logger does not like being created on the IO thread. 129d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) IPC::Logging::GetInstance(); 130d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#endif 131c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) channel_.reset( 132c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) new IPC::SyncChannel(channel_name_, 133c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) IPC::Channel::MODE_CLIENT, 134c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) this, 135c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ChildProcess::current()->io_message_loop_proxy(), 136c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) true, 137c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ChildProcess::current()->GetShutDownEvent())); 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->SetIPCSender(this); 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sync_message_filter_ = 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new IPC::SyncMessageFilter(ChildProcess::current()->GetShutDownEvent()); 1447d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) thread_safe_sender_ = new ThreadSafeSender( 1457d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) base::MessageLoopProxy::current().get(), sync_message_filter_.get()); 146558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 147558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch resource_dispatcher_.reset(new ResourceDispatcher(this)); 148558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch socket_stream_dispatcher_.reset(new SocketStreamDispatcher()); 149558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch file_system_dispatcher_.reset(new FileSystemDispatcher()); 150558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) histogram_message_filter_ = new ChildHistogramMessageFilter(); 152868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) resource_message_filter_ = 153868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) new ChildResourceMessageFilter(resource_dispatcher()); 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 155558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_message_filter_ = 156558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch new QuotaMessageFilter(thread_safe_sender_.get()); 157558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_dispatcher_.reset(new QuotaDispatcher(thread_safe_sender_.get(), 158558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_message_filter_.get())); 159558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(histogram_message_filter_.get()); 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(sync_message_filter_.get()); 162a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) channel_->AddFilter(new tracing::ChildTraceMessageFilter( 1632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ChildProcess::current()->io_message_loop_proxy())); 164868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) channel_->AddFilter(resource_message_filter_.get()); 165558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch channel_->AddFilter(quota_message_filter_.get()); 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 167a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // In single process mode we may already have a power monitor 168a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) if (!base::PowerMonitor::Get()) { 169a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) scoped_ptr<PowerMonitorBroadcastSource> power_monitor_source( 170a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) new PowerMonitorBroadcastSource()); 171a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) channel_->AddFilter(power_monitor_source->GetMessageFilter()); 172a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 173a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) power_monitor_.reset(new base::PowerMonitor( 174a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) power_monitor_source.PassAs<base::PowerMonitorSource>())); 175a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) } 176a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_POSIX) 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check that --process-type is specified so we don't do this in unit tests 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and single-process mode. 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kProcessType)) 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(new SuicideOnChannelErrorFilter()); 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1847dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kTraceToConsole)) { 1857dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch std::string category_string = 1867dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 1877dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch switches::kTraceToConsole); 1887dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 1897dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch if (!category_string.size()) 1907dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch category_string = "*"; 1917dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 1927dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch base::debug::TraceLog::GetInstance()->SetEnabled( 1937dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch base::debug::CategoryFilter(category_string), 1947dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch base::debug::TraceLog::ECHO_TO_CONSOLE); 1957dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch } 1967dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch 197c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->PostDelayedTask( 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Bind(&ChildThread::EnsureConnected, 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_connected_factory_.GetWeakPtr()), 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta::FromSeconds(kConnectionTimeoutS)); 202eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 203eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#if defined(OS_ANDROID) 204eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_child_thread = this; 205eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 206bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 207bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED) 208bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch trace_memory_controller_.reset(new base::debug::TraceMemoryController( 209bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch message_loop_->message_loop_proxy(), 210bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::HeapProfilerWithPseudoStackStart, 211bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::HeapProfilerStop, 212bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::GetHeapProfile)); 213bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#endif 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread::~ChildThread() { 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->SetIPCSender(NULL); 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 221558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch channel_->RemoveFilter(quota_message_filter_.get()); 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->RemoveFilter(histogram_message_filter_.get()); 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->RemoveFilter(sync_message_filter_.get()); 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The ChannelProxy object caches a pointer to the IPC thread, so need to 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // reset it as it's not guaranteed to outlive this object. 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NOTE: this also has the side-effect of not closing the main IPC channel to 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the browser process. This is needed because this is the signal that the 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // browser uses to know that this process has died, so we need it to be alive 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // until this process is shut down, and the OS closes the handle 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // automatically. We used to watch the object handle on Windows to do this, 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // but it wasn't possible to do so on POSIX. 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->ClearIPCTaskRunner(); 234eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_lazy_tls.Pointer()->Set(NULL); 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 237a3f7b4e666c476898878fa745f637129375cd889Ben Murdochvoid ChildThread::Shutdown() { 238a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch // Delete objects that hold references to blink so derived classes can 239a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch // safely shutdown blink in their Shutdown implementation. 240a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch file_system_dispatcher_.reset(); 241a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch} 242a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnChannelConnected(int32 peer_pid) { 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_connected_factory_.InvalidateWeakPtrs(); 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnChannelError() { 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) set_on_channel_error_called(true); 249c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::Send(IPC::Message* msg) { 253c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(base::MessageLoop::current() == message_loop()); 254c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!channel_) { 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete msg; 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return channel_->Send(msg); 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::AddRoute(int32 routing_id, IPC::Listener* listener) { 263c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(base::MessageLoop::current() == message_loop()); 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) router_.AddRoute(routing_id, listener); 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::RemoveRoute(int32 routing_id) { 269c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(base::MessageLoop::current() == message_loop()); 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) router_.RemoveRoute(routing_id); 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)webkit_glue::ResourceLoaderBridge* ChildThread::CreateBridge( 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const webkit_glue::ResourceLoaderBridge::RequestInfo& request_info) { 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return resource_dispatcher()->CreateBridge(request_info); 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)base::SharedMemory* ChildThread::AllocateSharedMemory(size_t buf_size) { 2802a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return AllocateSharedMemory(buf_size, this); 2812a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 2822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 2832a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)base::SharedMemory* ChildThread::AllocateSharedMemory( 2852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t buf_size, 2862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) IPC::Sender* sender) { 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<base::SharedMemory> shared_buf; 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shared_buf.reset(new base::SharedMemory); 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!shared_buf->CreateAndMapAnonymous(buf_size)) { 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On POSIX, we need to ask the browser to create the shared memory for us, 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // since this is blocked by the sandbox. 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::SharedMemoryHandle shared_mem_handle; 2982a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (sender->Send(new ChildProcessHostMsg_SyncAllocateSharedMemory( 2992a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) buf_size, &shared_mem_handle))) { 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (base::SharedMemory::IsHandleValid(shared_mem_handle)) { 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shared_buf.reset(new base::SharedMemory(shared_mem_handle, false)); 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!shared_buf->Map(buf_size)) { 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Map failed"; 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Browser failed to allocate shared memory"; 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Browser allocation request message failed"; 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return shared_buf.release(); 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::OnMessageReceived(const IPC::Message& msg) { 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Resource responses are sent to the resource dispatcher. 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (resource_dispatcher_->OnMessageReceived(msg)) 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (socket_stream_dispatcher_->OnMessageReceived(msg)) 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (file_system_dispatcher_->OnMessageReceived(msg)) 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool handled = true; 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_BEGIN_MESSAGE_MAP(ChildThread, msg) 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_Shutdown, OnShutdown) 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(IPC_MESSAGE_LOG_ENABLED) 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_SetIPCLoggingEnabled, 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnSetIPCLoggingEnabled) 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_SetProfilerStatus, 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnSetProfilerStatus) 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_GetChildProfilerData, 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnGetChildProfilerData) 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_DumpHandles, OnDumpHandles) 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_TCMALLOC) 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_GetTcmallocStats, OnGetTcmallocStats) 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_UNHANDLED(handled = false) 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_END_MESSAGE_MAP() 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (handled) 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (msg.routing_id() == MSG_ROUTING_CONTROL) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return OnControlMessageReceived(msg); 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return router_.OnMessageReceived(msg); 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::OnControlMessageReceived(const IPC::Message& msg) { 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnShutdown() { 359c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(IPC_MESSAGE_LOG_ENABLED) 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnSetIPCLoggingEnabled(bool enable) { 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enable) 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->Enable(); 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->Disable(); 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // IPC_MESSAGE_LOG_ENABLED 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnSetProfilerStatus(ThreadData::Status status) { 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadData::InitializeAndSetTrackingStatus(status); 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnGetChildProfilerData(int sequence_number) { 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tracked_objects::ProcessDataSnapshot process_data; 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadData::Snapshot(false, &process_data); 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_ChildProfilerData(sequence_number, 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) process_data)); 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnDumpHandles() { 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<HandleEnumerator> handle_enum( 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new HandleEnumerator( 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CommandLine::ForCurrentProcess()->HasSwitch( 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switches::kAuditAllHandles))); 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) handle_enum->EnumerateHandles(); 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_DumpHandlesDone); 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTIMPLEMENTED(); 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_TCMALLOC) 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnGetTcmallocStats() { 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string result; 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char buffer[1024 * 32]; 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::allocator::GetStats(buffer, sizeof(buffer)); 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result.append(buffer); 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_TcmallocStats(result)); 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread* ChildThread::current() { 408eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return g_lazy_tls.Pointer()->Get(); 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 411eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#if defined(OS_ANDROID) 412eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochvoid ChildThread::ShutdownThread() { 413eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch DCHECK_NE(base::MessageLoop::current(), g_child_thread->message_loop()); 414eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_child_thread->message_loop()->PostTask( 415eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch FROM_HERE, base::Bind(&QuitMainThreadMessageLoop)); 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 418eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 419eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnProcessFinalRelease() { 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (on_channel_error_called_) { 422c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The child process shutdown sequence is a request response based mechanism, 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // where we send out an initial feeler request to the child process host 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // instance in the browser to verify if it's ok to shutdown the child process. 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The browser then sends back a response if it's ok to shutdown. This avoids 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // race conditions if the process refcount is 0 but there's an IPC message 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // inflight that would addref it. 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_ShutdownRequest); 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::EnsureConnected() { 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) LOG(INFO) << "ChildThread::EnsureConnected()"; 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::KillProcess(base::GetCurrentProcessHandle(), 0, false); 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace content 441