child_thread.cc revision 5d1f7b1de12d16ceb2c938c56701a3e8bfa558f7
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" 1958e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdoch#include "base/process/kill.h" 2058e6fbe4ee35d65e14b626c557d37565bf8ad179Ben Murdoch#include "base/process/process_handle.h" 21868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "base/strings/string_util.h" 224e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "base/synchronization/condition_variable.h" 234e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)#include "base/synchronization/lock.h" 24eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "base/threading/thread_local.h" 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/tracked_objects.h" 262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "components/tracing/child_trace_message_filter.h" 27868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_histogram_message_filter.h" 28868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_process.h" 29868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/child_resource_message_filter.h" 30868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/fileapi/file_system_dispatcher.h" 31a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles)#include "content/child/power_monitor_broadcast_source.h" 32868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/quota_dispatcher.h" 33558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch#include "content/child/quota_message_filter.h" 34868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/resource_dispatcher.h" 351e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)#include "content/child/service_worker/service_worker_dispatcher.h" 361e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles)#include "content/child/service_worker/service_worker_message_filter.h" 37868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/socket_stream_dispatcher.h" 38868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "content/child/thread_safe_sender.h" 3968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)#include "content/child/websocket_dispatcher.h" 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/common/child_process_messages.h" 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/public/common/content_switches.h" 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_logging.h" 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_switches.h" 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_sync_channel.h" 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ipc/ipc_sync_message_filter.h" 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "content/common/handle_enumerator_win.h" 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 51bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED) 52bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#include "third_party/tcmalloc/chromium/src/gperftools/heap-profiler.h" 53bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#endif 54bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)using tracked_objects::ThreadData; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace content { 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// How long to wait for a connection to the browser process before giving up. 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)const int kConnectionTimeoutS = 15; 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 63eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochbase::LazyInstance<base::ThreadLocalPointer<ChildThread> > g_lazy_tls = 64eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch LAZY_INSTANCE_INITIALIZER; 65eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// This isn't needed on Windows because there the sandbox's job object 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// terminates child processes automatically. For unsandboxed processes (i.e. 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// plugins), PluginThread has EnsureTerminateMessageFilter. 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_POSIX) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 715d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// A thread delegate that waits for |duration| and then signals the process 725d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// with SIGALRM. 735d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)class WaitAndExitDelegate : public base::PlatformThread::Delegate { 745d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) public: 755d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) explicit WaitAndExitDelegate(base::TimeDelta duration) 765d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) : duration_(duration) {} 775d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual ~WaitAndExitDelegate() OVERRIDE {} 785d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 795d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) virtual void ThreadMain() OVERRIDE { 805d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::PlatformThread::Sleep(duration_); 815d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // This used to be implemented with alarm(2). Make sure to not break 825d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // anything that requires the process being signaled. 835d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) CHECK_EQ(0, raise(SIGALRM)); 845d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 855d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) base::PlatformThread::Sleep((base::TimeDelta::FromSeconds(10))); 865d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // If something erroneously blocked SIGALRM, this will trigger. 875d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) NOTREACHED(); 885d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) _exit(0); 895d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 905d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 915d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) private: 925d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const base::TimeDelta duration_; 935d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(WaitAndExitDelegate); 945d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)}; 955d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 965d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// This is similar to using alarm(2), except it will spawn a thread 975d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)// which will sleep for |duration| before raising SIGALRM. 985d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)bool CreateAlarmThread(base::TimeDelta duration) { 995d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) scoped_ptr<WaitAndExitDelegate> delegate(new WaitAndExitDelegate(duration)); 1005d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1015d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) const bool thread_created = base::PlatformThread::CreateNonJoinable( 1025d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 0 /* stack_size */, delegate.get()); 1035d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (!thread_created) 1045d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return false; 1055d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1065d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // A non joinable thread has been created. The thread will either terminate 1075d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // the process or will be terminated by the process. Therefore, keep the 1085d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // delegate object alive for the lifetime of the process. 1095d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) WaitAndExitDelegate* leaking_delegate = delegate.release(); 1105d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ANNOTATE_LEAKING_OBJECT_PTR(leaking_delegate); 1115d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) ignore_result(leaking_delegate); 1125d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return true; 1135d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 1145d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class SuicideOnChannelErrorFilter : public IPC::ChannelProxy::MessageFilter { 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // IPC::ChannelProxy::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 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // from the IPC channel) 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) // 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // So, we install a filter on the channel so that we can process this event 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // here and kill the process. 134a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) if (CommandLine::ForCurrentProcess()-> 135a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) HasSwitch(switches::kChildCleanExit)) { 136a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // If clean exit is requested, we want to kill this process after giving 137a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // it 60 seconds to run exit handlers. Exit handlers may including ones 138a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // that write profile data to disk (which happens under profile collection 139a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // mode). 1405d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) CHECK(CreateAlarmThread(base::TimeDelta::FromSeconds(60))); 1415d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#if defined(LEAK_SANITIZER) 1425d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // Invoke LeakSanitizer early to avoid detecting shutdown-only leaks. If 1435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) // leaks are found, the process will exit here. 1445d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) __lsan_do_leak_check(); 1455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)#endif 146a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) } else { 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) _exit(0); 148a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) } 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; 1691e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) static const bool kAllowedToAccessOnNonjoinableThread ALLOW_UNUSED = false; 1704e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) static base::ConditionVariable* New(void* instance) { 1714e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) return new (instance) base::ConditionVariable( 1724e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_lazy_child_thread_lock.Pointer()); 1734e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 1744e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) static void Delete(base::ConditionVariable* instance) { 1754e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) instance->~ConditionVariable(); 1764e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 1774e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)}; 1784e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) 1794e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// A condition variable that synchronize threads initializing and waiting 1804e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// for g_child_thread. 1814e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)base::LazyInstance<base::ConditionVariable, CondVarLazyInstanceTraits> 1824e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_lazy_child_thread_cv = LAZY_INSTANCE_INITIALIZER; 183eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 184eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochvoid QuitMainThreadMessageLoop() { 185eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch base::MessageLoop::current()->Quit(); 186eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch} 187eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 188eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 189eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread::ChildThread() 1931e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) : channel_connected_factory_(this), 1941e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) in_browser_process_(false) { 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_name_ = CommandLine::ForCurrentProcess()->GetSwitchValueASCII( 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switches::kProcessChannelID); 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Init(); 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread::ChildThread(const std::string& channel_name) 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : channel_name_(channel_name), 2021e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) channel_connected_factory_(this), 2031e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) in_browser_process_(true) { 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Init(); 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::Init() { 208eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_lazy_tls.Pointer()->Set(this); 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) on_channel_error_called_ = false; 210c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) message_loop_ = base::MessageLoop::current(); 211d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 212d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // We must make sure to instantiate the IPC Logger *before* we create the 213d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // channel, otherwise we can get a callback on the IO thread which creates 214d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) // the logger, and the logger does not like being created on the IO thread. 215d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles) IPC::Logging::GetInstance(); 216d0247b1b59f9c528cb6df88b4f2b9afaf80d181eTorne (Richard Coles)#endif 217c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) channel_.reset( 218c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) new IPC::SyncChannel(channel_name_, 219c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) IPC::Channel::MODE_CLIENT, 220c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) this, 221c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ChildProcess::current()->io_message_loop_proxy(), 222c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) true, 223c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) ChildProcess::current()->GetShutDownEvent())); 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 2251e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) if (!in_browser_process_) 2261e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) IPC::Logging::GetInstance()->SetIPCSender(this); 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sync_message_filter_ = 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new IPC::SyncMessageFilter(ChildProcess::current()->GetShutDownEvent()); 2317d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) thread_safe_sender_ = new ThreadSafeSender( 2327d4cd473f85ac64c3747c96c277f9e506a0d2246Torne (Richard Coles) base::MessageLoopProxy::current().get(), sync_message_filter_.get()); 233558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 234558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch resource_dispatcher_.reset(new ResourceDispatcher(this)); 235558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch socket_stream_dispatcher_.reset(new SocketStreamDispatcher()); 23668043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) websocket_dispatcher_.reset(new WebSocketDispatcher); 237558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch file_system_dispatcher_.reset(new FileSystemDispatcher()); 238558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) histogram_message_filter_ = new ChildHistogramMessageFilter(); 240868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) resource_message_filter_ = 241868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) new ChildResourceMessageFilter(resource_dispatcher()); 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2431e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) service_worker_message_filter_ = 2441e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) new ServiceWorkerMessageFilter(thread_safe_sender_.get()); 2451e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) service_worker_dispatcher_.reset( 2461e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) new ServiceWorkerDispatcher(thread_safe_sender_.get())); 2471e9bf3e0803691d0a228da41fc608347b6db4340Torne (Richard Coles) 248558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_message_filter_ = 249558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch new QuotaMessageFilter(thread_safe_sender_.get()); 250558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_dispatcher_.reset(new QuotaDispatcher(thread_safe_sender_.get(), 251558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch quota_message_filter_.get())); 252558790d6acca3451cf3a6b497803a5f07d0bec58Ben Murdoch 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(histogram_message_filter_.get()); 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(sync_message_filter_.get()); 255a93a17c8d99d686bd4a1511e5504e5e6cc9fcadfTorne (Richard Coles) channel_->AddFilter(new tracing::ChildTraceMessageFilter( 2562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ChildProcess::current()->io_message_loop_proxy())); 257868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) channel_->AddFilter(resource_message_filter_.get()); 258f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) channel_->AddFilter(quota_message_filter_->GetFilter()); 259f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) channel_->AddFilter(service_worker_message_filter_->GetFilter()); 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 261a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) // In single process mode we may already have a power monitor 262a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) if (!base::PowerMonitor::Get()) { 263a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) scoped_ptr<PowerMonitorBroadcastSource> power_monitor_source( 264a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) new PowerMonitorBroadcastSource()); 265a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) channel_->AddFilter(power_monitor_source->GetMessageFilter()); 266a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 267a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) power_monitor_.reset(new base::PowerMonitor( 268a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) power_monitor_source.PassAs<base::PowerMonitorSource>())); 269a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) } 270a36e5920737c6adbddd3e43b760e5de8431db6e0Torne (Richard Coles) 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_POSIX) 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Check that --process-type is specified so we don't do this in unit tests 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and single-process mode. 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kProcessType)) 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->AddFilter(new SuicideOnChannelErrorFilter()); 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 278c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->PostDelayedTask( 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) FROM_HERE, 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::Bind(&ChildThread::EnsureConnected, 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_connected_factory_.GetWeakPtr()), 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::TimeDelta::FromSeconds(kConnectionTimeoutS)); 283eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 284eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#if defined(OS_ANDROID) 2854e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) { 2864e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) base::AutoLock lock(g_lazy_child_thread_lock.Get()); 2874e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_child_thread = this; 2884e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 2894e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) // Signalling without locking is fine here because only 2904e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) // one thread can wait on the condition variable. 2914e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_lazy_child_thread_cv.Get().Signal(); 292eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 293bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch 294bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#if defined(TCMALLOC_TRACE_MEMORY_SUPPORTED) 295bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch trace_memory_controller_.reset(new base::debug::TraceMemoryController( 296bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch message_loop_->message_loop_proxy(), 297bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::HeapProfilerWithPseudoStackStart, 298bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::HeapProfilerStop, 299bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch ::GetHeapProfile)); 300bbcdd45c55eb7c4641ab97aef9889b0fc828e7d3Ben Murdoch#endif 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread::~ChildThread() { 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef IPC_MESSAGE_LOG_ENABLED 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->SetIPCSender(NULL); 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->RemoveFilter(histogram_message_filter_.get()); 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->RemoveFilter(sync_message_filter_.get()); 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The ChannelProxy object caches a pointer to the IPC thread, so need to 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // reset it as it's not guaranteed to outlive this object. 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // NOTE: this also has the side-effect of not closing the main IPC channel to 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // the browser process. This is needed because this is the signal that the 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // browser uses to know that this process has died, so we need it to be alive 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // until this process is shut down, and the OS closes the handle 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // automatically. We used to watch the object handle on Windows to do this, 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // but it wasn't possible to do so on POSIX. 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_->ClearIPCTaskRunner(); 320eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_lazy_tls.Pointer()->Set(NULL); 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 323a3f7b4e666c476898878fa745f637129375cd889Ben Murdochvoid ChildThread::Shutdown() { 324a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch // Delete objects that hold references to blink so derived classes can 325a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch // safely shutdown blink in their Shutdown implementation. 326a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch file_system_dispatcher_.reset(); 327f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) quota_dispatcher_.reset(); 328a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch} 329a3f7b4e666c476898878fa745f637129375cd889Ben Murdoch 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnChannelConnected(int32 peer_pid) { 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) channel_connected_factory_.InvalidateWeakPtrs(); 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnChannelError() { 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) set_on_channel_error_called(true); 336c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::Send(IPC::Message* msg) { 340c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(base::MessageLoop::current() == message_loop()); 341c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) if (!channel_) { 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) delete msg; 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return channel_->Send(msg); 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::AddRoute(int32 routing_id, IPC::Listener* listener) { 350c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(base::MessageLoop::current() == message_loop()); 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) router_.AddRoute(routing_id, listener); 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::RemoveRoute(int32 routing_id) { 356c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) DCHECK(base::MessageLoop::current() == message_loop()); 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) router_.RemoveRoute(routing_id); 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)webkit_glue::ResourceLoaderBridge* ChildThread::CreateBridge( 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const webkit_glue::ResourceLoaderBridge::RequestInfo& request_info) { 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return resource_dispatcher()->CreateBridge(request_info); 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)base::SharedMemory* ChildThread::AllocateSharedMemory(size_t buf_size) { 3672a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return AllocateSharedMemory(buf_size, this); 3682a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)base::SharedMemory* ChildThread::AllocateSharedMemory( 3722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_t buf_size, 3732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) IPC::Sender* sender) { 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<base::SharedMemory> shared_buf; 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shared_buf.reset(new base::SharedMemory); 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!shared_buf->CreateAndMapAnonymous(buf_size)) { 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED(); 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // On POSIX, we need to ask the browser to create the shared memory for us, 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // since this is blocked by the sandbox. 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::SharedMemoryHandle shared_mem_handle; 3852a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (sender->Send(new ChildProcessHostMsg_SyncAllocateSharedMemory( 3862a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) buf_size, &shared_mem_handle))) { 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (base::SharedMemory::IsHandleValid(shared_mem_handle)) { 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) shared_buf.reset(new base::SharedMemory(shared_mem_handle, false)); 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!shared_buf->Map(buf_size)) { 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Map failed"; 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Browser failed to allocate shared memory"; 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTREACHED() << "Browser allocation request message failed"; 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NULL; 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return shared_buf.release(); 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::OnMessageReceived(const IPC::Message& msg) { 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Resource responses are sent to the resource dispatcher. 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (resource_dispatcher_->OnMessageReceived(msg)) 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (socket_stream_dispatcher_->OnMessageReceived(msg)) 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 41168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) if (websocket_dispatcher_->OnMessageReceived(msg)) 41268043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) return true; 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (file_system_dispatcher_->OnMessageReceived(msg)) 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool handled = true; 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_BEGIN_MESSAGE_MAP(ChildThread, msg) 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_Shutdown, OnShutdown) 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(IPC_MESSAGE_LOG_ENABLED) 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_SetIPCLoggingEnabled, 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnSetIPCLoggingEnabled) 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_SetProfilerStatus, 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnSetProfilerStatus) 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_GetChildProfilerData, 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) OnGetChildProfilerData) 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_DumpHandles, OnDumpHandles) 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_TCMALLOC) 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_HANDLER(ChildProcessMsg_GetTcmallocStats, OnGetTcmallocStats) 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_MESSAGE_UNHANDLED(handled = false) 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC_END_MESSAGE_MAP() 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (handled) 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (msg.routing_id() == MSG_ROUTING_CONTROL) 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return OnControlMessageReceived(msg); 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return router_.OnMessageReceived(msg); 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ChildThread::OnControlMessageReceived(const IPC::Message& msg) { 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnShutdown() { 448c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(IPC_MESSAGE_LOG_ENABLED) 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnSetIPCLoggingEnabled(bool enable) { 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (enable) 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->Enable(); 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) IPC::Logging::GetInstance()->Disable(); 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // IPC_MESSAGE_LOG_ENABLED 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnSetProfilerStatus(ThreadData::Status status) { 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadData::InitializeAndSetTrackingStatus(status); 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnGetChildProfilerData(int sequence_number) { 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) tracked_objects::ProcessDataSnapshot process_data; 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ThreadData::Snapshot(false, &process_data); 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_ChildProfilerData(sequence_number, 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) process_data)); 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnDumpHandles() { 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(OS_WIN) 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_refptr<HandleEnumerator> handle_enum( 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) new HandleEnumerator( 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CommandLine::ForCurrentProcess()->HasSwitch( 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) switches::kAuditAllHandles))); 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) handle_enum->EnumerateHandles(); 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_DumpHandlesDone); 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NOTIMPLEMENTED(); 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_TCMALLOC) 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnGetTcmallocStats() { 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::string result; 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char buffer[1024 * 32]; 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::allocator::GetStats(buffer, sizeof(buffer)); 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) result.append(buffer); 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_TcmallocStats(result)); 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ChildThread* ChildThread::current() { 497eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch return g_lazy_tls.Pointer()->Get(); 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 500eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#if defined(OS_ANDROID) 5014e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// The method must NOT be called on the child thread itself. 5024e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)// It may block the child thread if so. 503eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdochvoid ChildThread::ShutdownThread() { 5044e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) DCHECK(!ChildThread::current()) << 5054e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) "this method should NOT be called from child thread itself"; 5064e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) { 5074e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) base::AutoLock lock(g_lazy_child_thread_lock.Get()); 5084e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) while (!g_child_thread) 5094e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) g_lazy_child_thread_cv.Get().Wait(); 5104e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles) } 511eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch DCHECK_NE(base::MessageLoop::current(), g_child_thread->message_loop()); 512eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch g_child_thread->message_loop()->PostTask( 513eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch FROM_HERE, base::Bind(&QuitMainThreadMessageLoop)); 5145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 516eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#endif 517eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::OnProcessFinalRelease() { 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (on_channel_error_called_) { 520c2e0dbddbe15c98d52c4786dac06cb8952a8ae6dTorne (Richard Coles) base::MessageLoop::current()->Quit(); 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The child process shutdown sequence is a request response based mechanism, 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // where we send out an initial feeler request to the child process host 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // instance in the browser to verify if it's ok to shutdown the child process. 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The browser then sends back a response if it's ok to shutdown. This avoids 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // race conditions if the process refcount is 0 but there's an IPC message 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // inflight that would addref it. 5305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Send(new ChildProcessHostMsg_ShutdownRequest); 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ChildThread::EnsureConnected() { 534f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) VLOG(0) << "ChildThread::EnsureConnected()"; 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::KillProcess(base::GetCurrentProcessHandle(), 0, false); 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace content 539