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) 75d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include <signal.h> 85d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 91e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)#include <string> 101e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/allocator/allocator_extension.h" 127dbb3d5cf0c15f500944d211057644d6a2f37371Ben Murdoch#include "base/base_switches.h" 135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "base/basictypes.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/command_line.h" 155d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "base/debug/leak_annotations.h" 16eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/lazy_instance.h" 175d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#include "base/logging.h" 189ab5563a3196760eb381d102cbb2bc0f7abc6a50Ben Murdoch#include "base/message_loop/message_loop.h" 1946d4c2bc3267f3f028f39e7e311b0f89aba2e4fdTorne (Richard Coles)#include "base/message_loop/timer_slack.h" 2058e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdoch#include "base/process/kill.h" 2158e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdoch#include "base/process/process_handle.h" 226d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles)#include "base/strings/string_number_conversions.h" 23868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/string_util.h" 244e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "base/synchronization/condition_variable.h" 254e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "base/synchronization/lock.h" 26eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/threading/thread_local.h" 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/tracked_objects.h" 282a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "components/tracing/child_trace_message_filter.h" 29868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_histogram_message_filter.h" 30868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_process.h" 31868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_resource_message_filter.h" 32a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#include "content/child/child_shared_bitmap_manager.h" 33868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/fileapi/file_system_dispatcher.h" 340de6073388f4e2780db8536178b129cd8f6ab386Torne (Richard Coles)#include "content/child/fileapi/webfilesystem_impl.h" 355c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu#include "content/child/mojo/mojo_application.h" 36a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)#include "content/child/power_monitor_broadcast_source.h" 37868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/quota_dispatcher.h" 38558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch#include "content/child/quota_message_filter.h" 39868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/resource_dispatcher.h" 401e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)#include "content/child/service_worker/service_worker_message_filter.h" 41868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/socket_stream_dispatcher.h" 42868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/thread_safe_sender.h" 4368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)#include "content/child/websocket_dispatcher.h" 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/common/child_process_messages.h" 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/common/content_switches.h" 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_logging.h" 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_switches.h" 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_sync_channel.h" 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_sync_message_filter.h" 505f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)#include "ipc/mojo/ipc_channel_mojo.h" 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/common/handle_enumerator_win.h" 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 56bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED) 57bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h" 58bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#endif 59bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using tracked_objects::ThreadData; 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// How long to wait for a connection to the browser process before giving up. 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const int kConnectionTimeoutS = 15; 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 68eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochbase::LazyInstance<base::ThreadLocalPointer<ChildThread> > g_lazy_tls = 69eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch LAZY_INSTANCE_INITIALIZER; 70eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This isn't needed on Windows because there the sandbox's job object 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// terminates child processes automatically. For unsandboxed processes (i.e. 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// plugins), PluginThread has EnsureTerminateMessageFilter. 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_POSIX) 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 76c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch// TODO(earthdok): Re-enable on CrOS http://crbug.com/360622 77c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch#if (defined(ADDRESS_SANITIZER) || defined(LEAK_SANITIZER) || \ 78c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch defined(THREAD_SANITIZER)) && !defined(OS_CHROMEOS) 79c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch// A thread delegate that waits for |duration| and then exits the process with 80c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch// _exit(0). 81c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdochclass WaitAndExitDelegate : public base::PlatformThread::Delegate { 82c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch public: 83c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch explicit WaitAndExitDelegate(base::TimeDelta duration) 84c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch : duration_(duration) {} 85c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch virtual ~WaitAndExitDelegate() OVERRIDE {} 86c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 87c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch virtual void ThreadMain() OVERRIDE { 88c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch base::PlatformThread::Sleep(duration_); 89c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch _exit(0); 90c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch } 91c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 92c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch private: 93c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch const base::TimeDelta duration_; 94c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch DISALLOW_COPY_AND_ASSIGN(WaitAndExitDelegate); 95c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch}; 96c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 97c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdochbool CreateWaitAndExitThread(base::TimeDelta duration) { 98c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch scoped_ptr<WaitAndExitDelegate> delegate(new WaitAndExitDelegate(duration)); 99c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 100c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch const bool thread_created = 101c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch base::PlatformThread::CreateNonJoinable(0, delegate.get()); 102c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch if (!thread_created) 103c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch return false; 104c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 105c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // A non joinable thread has been created. The thread will either terminate 106c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // the process or will be terminated by the process. Therefore, keep the 107c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // delegate object alive for the lifetime of the process. 108c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch WaitAndExitDelegate* leaking_delegate = delegate.release(); 109c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch ANNOTATE_LEAKING_OBJECT_PTR(leaking_delegate); 110c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch ignore_result(leaking_delegate); 111c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch return true; 112c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch} 113c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch#endif 114c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch 1155c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liuclass SuicideOnChannelErrorFilter : public IPC::MessageFilter { 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 1175c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu // IPC::MessageFilter 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void OnChannelError() OVERRIDE { 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // For renderer/worker processes: 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On POSIX, at least, one can install an unload handler which loops 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // forever and leave behind a renderer process which eats 100% CPU forever. 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // This is because the terminate signals (ViewMsg_ShouldClose and the error 124f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // from the IPC sender) are routed to the main message loop but never 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // processed (because that message loop is stuck in V8). 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // One could make the browser SIGKILL the renderers, but that leaves open a 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // large window where a browser failure (or a user, manually terminating 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the browser because "it's stuck") will leave behind a process eating all 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the CPU. 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // 132f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) // So, we install a filter on the sender so that we can process this event 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // here and kill the process. 134c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // TODO(earthdok): Re-enable on CrOS http://crbug.com/360622 135c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch#if (defined(ADDRESS_SANITIZER) || defined(LEAK_SANITIZER) || \ 136c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch defined(THREAD_SANITIZER)) && !defined(OS_CHROMEOS) 137c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // Some sanitizer tools rely on exit handlers (e.g. to run leak detection, 138c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // or dump code coverage data to disk). Instead of exiting the process 139c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // immediately, we give it 60 seconds to run exit handlers. 140c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch CHECK(CreateWaitAndExitThread(base::TimeDelta::FromSeconds(60))); 141c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch#if defined(LEAK_SANITIZER) 142c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // Invoke LeakSanitizer early to avoid detecting shutdown-only leaks. If 143c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch // leaks are found, the process will exit here. 144c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch __lsan_do_leak_check(); 145c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch#endif 146c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch#else 147effb81e5f8246d0db0270817048dc992db66e9fbBen Murdoch _exit(0); 148c5cede9ae108bb15f6b7a8aea21c7e1fefa2834cBen Murdoch#endif 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~SuicideOnChannelErrorFilter() {} 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // OS(POSIX) 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 157eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#if defined(OS_ANDROID) 1584e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)ChildThread* g_child_thread = NULL; 1594e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 1604e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// A lock protects g_child_thread. 1614e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)base::LazyInstance<base::Lock> g_lazy_child_thread_lock = 1624e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) LAZY_INSTANCE_INITIALIZER; 1634e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 1644e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// base::ConditionVariable has an explicit constructor that takes 1654e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// a base::Lock pointer as parameter. The base::DefaultLazyInstanceTraits 1664e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// doesn't handle the case. Thus, we need our own class here. 1674e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)struct CondVarLazyInstanceTraits { 1684e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) static const bool kRegisterOnExit = true; 169a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#ifndef NDEBUG 170a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) static const bool kAllowedToAccessOnNonjoinableThread = false; 171a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)#endif 172a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 1734e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) static base::ConditionVariable* New(void* instance) { 1744e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) return new (instance) base::ConditionVariable( 1754e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_lazy_child_thread_lock.Pointer()); 1764e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 1774e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) static void Delete(base::ConditionVariable* instance) { 1784e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) instance->~ConditionVariable(); 1794e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 1804e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)}; 1814e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 1824e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// A condition variable that synchronize threads initializing and waiting 1834e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// for g_child_thread. 1844e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)base::LazyInstance<base::ConditionVariable, CondVarLazyInstanceTraits> 1854e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_lazy_child_thread_cv = LAZY_INSTANCE_INITIALIZER; 186eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 187eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochvoid QuitMainThreadMessageLoop() { 188eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch base::MessageLoop::current()->Quit(); 189eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch} 190eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 191eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 192eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1955f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)ChildThread::Options::Options() 1966e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) : channel_name(base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 1975f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) switches::kProcessChannelID)), 1985f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) use_mojo_channel(false) {} 1995f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 2005f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)ChildThread::Options::Options(bool mojo) 2016e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) : channel_name(base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 2025f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) switches::kProcessChannelID)), 2035f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) use_mojo_channel(mojo) {} 2045f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 2055f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 206a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)ChildThread::ChildThreadMessageRouter::ChildThreadMessageRouter( 207a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) IPC::Sender* sender) 208a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) : sender_(sender) {} 209a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 210a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)bool ChildThread::ChildThreadMessageRouter::Send(IPC::Message* msg) { 211a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) return sender_->Send(msg); 212a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)} 213a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread::ChildThread() 215a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) : router_(this), 2161320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci in_browser_process_(false), 2171320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci channel_connected_factory_(this) { 2185f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) Init(Options()); 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2215f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)ChildThread::ChildThread(const Options& options) 2225f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) : router_(this), 2231320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci in_browser_process_(true), 2241320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci channel_connected_factory_(this) { 2255f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) Init(options); 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2285f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)scoped_ptr<IPC::SyncChannel> ChildThread::CreateChannel(bool use_mojo_channel) { 2295f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) if (use_mojo_channel) { 2305f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) VLOG(1) << "Mojo is enabled on child"; 2315f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) return IPC::SyncChannel::Create( 2321320f92c476a1ad9d19dba2a48c72b75566198e9Primiano Tucci IPC::ChannelMojo::CreateClientFactory(channel_name_), 2335f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) this, 2345f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) ChildProcess::current()->io_message_loop_proxy(), 2355f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) true, 2365f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) ChildProcess::current()->GetShutDownEvent()); 2375f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) } 2385f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 2395f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) VLOG(1) << "Mojo is disabled on child"; 2405f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) return IPC::SyncChannel::Create( 2415f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) channel_name_, 2425f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) IPC::Channel::MODE_CLIENT, 2435f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) this, 2445f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) ChildProcess::current()->io_message_loop_proxy(), 2455f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) true, 2465f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) ChildProcess::current()->GetShutDownEvent()); 2475f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)} 2485f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 2495f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles)void ChildThread::Init(const Options& options) { 2505f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) channel_name_ = options.channel_name; 2515f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) 252eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_lazy_tls.Pointer()->Set(this); 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) on_channel_error_called_ = false; 254c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) message_loop_ = base::MessageLoop::current(); 255d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 256d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // We must make sure to instantiate the IPC Logger *before* we create the 257d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // channel, otherwise we can get a callback on the IO thread which creates 258d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // the logger, and the logger does not like being created on the IO thread. 259d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) IPC::Logging::GetInstance(); 260d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#endif 2615f1c94371a64b3196d4be9466099bb892df9b88eTorne (Richard Coles) channel_ = CreateChannel(options.use_mojo_channel); 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 2631e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (!in_browser_process_) 2641e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) IPC::Logging::GetInstance()->SetIPCSender(this); 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 267116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch mojo_application_.reset(new MojoApplication); 2685c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sync_message_filter_ = 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new IPC::SyncMessageFilter(ChildProcess::current()->GetShutDownEvent()); 2717d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) thread_safe_sender_ = new ThreadSafeSender( 2727d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) base::MessageLoopProxy::current().get(), sync_message_filter_.get()); 273558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 274558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch resource_dispatcher_.reset(new ResourceDispatcher(this)); 275558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch socket_stream_dispatcher_.reset(new SocketStreamDispatcher()); 27668043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) websocket_dispatcher_.reset(new WebSocketDispatcher); 277558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch file_system_dispatcher_.reset(new FileSystemDispatcher()); 278558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) histogram_message_filter_ = new ChildHistogramMessageFilter(); 280868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) resource_message_filter_ = 281868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) new ChildResourceMessageFilter(resource_dispatcher()); 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2831e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) service_worker_message_filter_ = 2841e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) new ServiceWorkerMessageFilter(thread_safe_sender_.get()); 2851e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 286558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_message_filter_ = 287558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch new QuotaMessageFilter(thread_safe_sender_.get()); 288558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_dispatcher_.reset(new QuotaDispatcher(thread_safe_sender_.get(), 289558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_message_filter_.get())); 290558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(histogram_message_filter_.get()); 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(sync_message_filter_.get()); 293868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) channel_->AddFilter(resource_message_filter_.get()); 294f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) channel_->AddFilter(quota_message_filter_->GetFilter()); 295f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) channel_->AddFilter(service_worker_message_filter_->GetFilter()); 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2976e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) if (!base::CommandLine::ForCurrentProcess()->HasSwitch( 2986e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) switches::kSingleProcess)) { 299116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch // In single process mode, browser-side tracing will cover the whole 300116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch // process including renderers. 301116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch channel_->AddFilter(new tracing::ChildTraceMessageFilter( 302116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch ChildProcess::current()->io_message_loop_proxy())); 303116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch } 304116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch 305a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // In single process mode we may already have a power monitor 306a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) if (!base::PowerMonitor::Get()) { 307a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) scoped_ptr<PowerMonitorBroadcastSource> power_monitor_source( 308a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) new PowerMonitorBroadcastSource()); 309a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) channel_->AddFilter(power_monitor_source->GetMessageFilter()); 310a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 311a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) power_monitor_.reset(new base::PowerMonitor( 312a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) power_monitor_source.PassAs<base::PowerMonitorSource>())); 313a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) } 314a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_POSIX) 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check that --process-type is specified so we don't do this in unit tests 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and single-process mode. 3186e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) if (base::CommandLine::ForCurrentProcess()->HasSwitch(switches::kProcessType)) 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(new SuicideOnChannelErrorFilter()); 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3226d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) int connection_timeout = kConnectionTimeoutS; 3236d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) std::string connection_override = 3246e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) base::CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 3256d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) switches::kIPCConnectionTimeout); 3266d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) if (!connection_override.empty()) { 3276d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) int temp; 3286d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) if (base::StringToInt(connection_override, &temp)) 3296d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) connection_timeout = temp; 3306d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) } 3316d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) 332c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->PostDelayedTask( 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Bind(&ChildThread::EnsureConnected, 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_connected_factory_.GetWeakPtr()), 3366d86b77056ed63eb6871182f42a9fd5f07550f90Torne (Richard Coles) base::TimeDelta::FromSeconds(connection_timeout)); 337eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 338eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#if defined(OS_ANDROID) 3394e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) { 3404e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) base::AutoLock lock(g_lazy_child_thread_lock.Get()); 3414e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_child_thread = this; 3424e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 3434e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) // Signalling without locking is fine here because only 3444e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) // one thread can wait on the condition variable. 3454e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_lazy_child_thread_cv.Get().Signal(); 346eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 347bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 348bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED) 349bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch trace_memory_controller_.reset(new base::debug::TraceMemoryController( 350bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch message_loop_->message_loop_proxy(), 351bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::HeapProfilerWithPseudoStackStart, 352bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::HeapProfilerStop, 353bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::GetHeapProfile)); 354bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#endif 355a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) 356a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) shared_bitmap_manager_.reset( 357a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) new ChildSharedBitmapManager(thread_safe_sender())); 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread::~ChildThread() { 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->SetIPCSender(NULL); 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->RemoveFilter(histogram_message_filter_.get()); 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->RemoveFilter(sync_message_filter_.get()); 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The ChannelProxy object caches a pointer to the IPC thread, so need to 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // reset it as it's not guaranteed to outlive this object. 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NOTE: this also has the side-effect of not closing the main IPC channel to 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the browser process. This is needed because this is the signal that the 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // browser uses to know that this process has died, so we need it to be alive 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // until this process is shut down, and the OS closes the handle 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // automatically. We used to watch the object handle on Windows to do this, 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // but it wasn't possible to do so on POSIX. 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->ClearIPCTaskRunner(); 377eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_lazy_tls.Pointer()->Set(NULL); 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 380a3f7b4e666c476898878fa745f637129375cd889Ben Murdochvoid ChildThread::Shutdown() { 381a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch // Delete objects that hold references to blink so derived classes can 382a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch // safely shutdown blink in their Shutdown implementation. 383a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch file_system_dispatcher_.reset(); 384f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) quota_dispatcher_.reset(); 3850de6073388f4e2780db8536178b129cd8f6ab386Torne (Richard Coles) WebFileSystemImpl::DeleteThreadSpecificInstance(); 386a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch} 387a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnChannelConnected(int32 peer_pid) { 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_connected_factory_.InvalidateWeakPtrs(); 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnChannelError() { 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) set_on_channel_error_called(true); 394c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::Send(IPC::Message* msg) { 398c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(base::MessageLoop::current() == message_loop()); 399c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!channel_) { 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete msg; 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return channel_->Send(msg); 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 407a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles)MessageRouter* ChildThread::GetRouter() { 408c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(base::MessageLoop::current() == message_loop()); 409a1401311d1ab56c4ed0a474bd38c108f75cb0cd9Torne (Richard Coles) return &router_; 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)base::SharedMemory* ChildThread::AllocateSharedMemory(size_t buf_size) { 4132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return AllocateSharedMemory(buf_size, this); 4142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 4152a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 4162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)base::SharedMemory* ChildThread::AllocateSharedMemory( 4182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t buf_size, 4192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) IPC::Sender* sender) { 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<base::SharedMemory> shared_buf; 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shared_buf.reset(new base::SharedMemory); 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!shared_buf->CreateAndMapAnonymous(buf_size)) { 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On POSIX, we need to ask the browser to create the shared memory for us, 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // since this is blocked by the sandbox. 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::SharedMemoryHandle shared_mem_handle; 4312a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (sender->Send(new ChildProcessHostMsg_SyncAllocateSharedMemory( 4322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) buf_size, &shared_mem_handle))) { 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (base::SharedMemory::IsHandleValid(shared_mem_handle)) { 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shared_buf.reset(new base::SharedMemory(shared_mem_handle, false)); 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!shared_buf->Map(buf_size)) { 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Map failed"; 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Browser failed to allocate shared memory"; 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Browser allocation request message failed"; 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return shared_buf.release(); 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::OnMessageReceived(const IPC::Message& msg) { 4525c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu if (mojo_application_->OnMessageReceived(msg)) 4535c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu return true; 4545c02ac1a9c1b504631c0a3d2b6e737b5d738bae1Bo Liu 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Resource responses are sent to the resource dispatcher. 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (resource_dispatcher_->OnMessageReceived(msg)) 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (socket_stream_dispatcher_->OnMessageReceived(msg)) 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 46068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) if (websocket_dispatcher_->OnMessageReceived(msg)) 46168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) return true; 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (file_system_dispatcher_->OnMessageReceived(msg)) 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool handled = true; 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_BEGIN_MESSAGE_MAP(ChildThread, msg) 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_Shutdown, OnShutdown) 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(IPC_MESSAGE_LOG_ENABLED) 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_SetIPCLoggingEnabled, 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnSetIPCLoggingEnabled) 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_SetProfilerStatus, 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnSetProfilerStatus) 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_GetChildProfilerData, 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnGetChildProfilerData) 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_DumpHandles, OnDumpHandles) 4776e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_SetProcessBackgrounded, 4786e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) OnProcessBackgrounded) 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_TCMALLOC) 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_GetTcmallocStats, OnGetTcmallocStats) 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_UNHANDLED(handled = false) 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_END_MESSAGE_MAP() 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (handled) 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (msg.routing_id() == MSG_ROUTING_CONTROL) 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return OnControlMessageReceived(msg); 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return router_.OnMessageReceived(msg); 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::OnControlMessageReceived(const IPC::Message& msg) { 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnShutdown() { 499c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(IPC_MESSAGE_LOG_ENABLED) 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnSetIPCLoggingEnabled(bool enable) { 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enable) 5055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->Enable(); 5065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 5075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->Disable(); 5085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // IPC_MESSAGE_LOG_ENABLED 5105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnSetProfilerStatus(ThreadData::Status status) { 5125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadData::InitializeAndSetTrackingStatus(status); 5135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnGetChildProfilerData(int sequence_number) { 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tracked_objects::ProcessDataSnapshot process_data; 5175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadData::Snapshot(false, &process_data); 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_ChildProfilerData(sequence_number, 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) process_data)); 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnDumpHandles() { 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<HandleEnumerator> handle_enum( 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new HandleEnumerator( 5276e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) base::CommandLine::ForCurrentProcess()->HasSwitch( 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switches::kAuditAllHandles))); 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) handle_enum->EnumerateHandles(); 5305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_DumpHandlesDone); 53123730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles)#else 5325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTIMPLEMENTED(); 53323730a6e56a168d1879203e4b3819bb36e3d8f1fTorne (Richard Coles)#endif 5345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_TCMALLOC) 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnGetTcmallocStats() { 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string result; 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char buffer[1024 * 32]; 5405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::allocator::GetStats(buffer, sizeof(buffer)); 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result.append(buffer); 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_TcmallocStats(result)); 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread* ChildThread::current() { 547eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return g_lazy_tls.Pointer()->Get(); 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 550eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#if defined(OS_ANDROID) 5514e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// The method must NOT be called on the child thread itself. 5524e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// It may block the child thread if so. 553eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochvoid ChildThread::ShutdownThread() { 5544e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) DCHECK(!ChildThread::current()) << 5554e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) "this method should NOT be called from child thread itself"; 5564e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) { 5574e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) base::AutoLock lock(g_lazy_child_thread_lock.Get()); 5584e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) while (!g_child_thread) 5594e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_lazy_child_thread_cv.Get().Wait(); 5604e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 561eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch DCHECK_NE(base::MessageLoop::current(), g_child_thread->message_loop()); 562eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_child_thread->message_loop()->PostTask( 563eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch FROM_HERE, base::Bind(&QuitMainThreadMessageLoop)); 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 565eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 566eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 5675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnProcessFinalRelease() { 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (on_channel_error_called_) { 569c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 5705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The child process shutdown sequence is a request response based mechanism, 5745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // where we send out an initial feeler request to the child process host 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // instance in the browser to verify if it's ok to shutdown the child process. 5765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The browser then sends back a response if it's ok to shutdown. This avoids 5775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // race conditions if the process refcount is 0 but there's an IPC message 5785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // inflight that would addref it. 5795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_ShutdownRequest); 5805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::EnsureConnected() { 583f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) VLOG(0) << "ChildThread::EnsureConnected()"; 5845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::KillProcess(base::GetCurrentProcessHandle(), 0, false); 5855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5876e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles)void ChildThread::OnProcessBackgrounded(bool background) { 5886e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) // Set timer slack to maximum on main thread when in background. 5896e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) base::TimerSlack timer_slack = base::TIMER_SLACK_NONE; 5906e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) if (background) 5916e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) timer_slack = base::TIMER_SLACK_MAXIMUM; 5926e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) base::MessageLoop::current()->SetTimerSlack(timer_slack); 5936e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles)} 5946e8cce623b6e4fe0c9e4af605d675dd9d0338c38Torne (Richard Coles) 5955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace content 596