content/gpu/gpu_child_thread.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "content/gpu/gpu_child_thread.h"
   6
   7 #include "base/bind.h"
   8 #include "base/lazy_instance.h"
   9 #include "base/threading/worker_pool.h"
  10 #include "build/build_config.h"
  11 #include "content/child/child_process.h"
  12 #include "content/child/thread_safe_sender.h"
  13 #include "content/common/gpu/gpu_messages.h"
  14 #include "content/gpu/gpu_watchdog_thread.h"
  15 #include "content/public/common/content_client.h"
  16 #include "content/public/common/content_switches.h"
  17 #include "gpu/config/gpu_info_collector.h"
  18 #include "ipc/ipc_channel_handle.h"
  19 #include "ipc/ipc_sync_message_filter.h"
  20 #include "ui/gl/gl_implementation.h"
  21 #include "ui/gl/gpu_switching_manager.h"
  22
  23 #if defined(USE_OZONE)
  24 #include "ui/ozone/public/gpu_platform_support.h"
  25 #include "ui/ozone/public/ozone_platform.h"
  26 #endif
  27
  28 namespace content {
  29 namespace {
  30
  31 static base::LazyInstance<scoped_refptr<ThreadSafeSender> >
  32     g_thread_safe_sender = LAZY_INSTANCE_INITIALIZER;
  33
  34 bool GpuProcessLogMessageHandler(int severity,
  35                                  const char* file, int line,
  36                                  size_t message_start,
  37                                  const std::string& str) {
  38   std::string header = str.substr(0, message_start);
  39   std::string message = str.substr(message_start);
  40
  41   g_thread_safe_sender.Get()->Send(new GpuHostMsg_OnLogMessage(
  42       severity, header, message));
  43
  44   return false;
  45 }
  46
  47 ChildThreadImpl::Options GetOptions() {
  48   ChildThreadImpl::Options options;
  49
  50 #if defined(USE_OZONE)
  51   IPC::MessageFilter* message_filter = ui::OzonePlatform::GetInstance()
  52                                            ->GetGpuPlatformSupport()
  53                                            ->GetMessageFilter();
  54   if (message_filter)
  55     options.startup_filters.push_back(message_filter);
  56 #endif
  57
  58   return options;
  59 }
  60
  61 }  // namespace
  62
  63 GpuChildThread::GpuChildThread(GpuWatchdogThread* watchdog_thread,
  64                                bool dead_on_arrival,
  65                                const gpu::GPUInfo& gpu_info,
  66                                const DeferredMessages& deferred_messages)
  67     : ChildThreadImpl(GetOptions()),
  68       dead_on_arrival_(dead_on_arrival),
  69       gpu_info_(gpu_info),
  70       deferred_messages_(deferred_messages),
  71       in_browser_process_(false) {
  72   watchdog_thread_ = watchdog_thread;
  73 #if defined(OS_WIN)
  74   target_services_ = NULL;
  75 #endif
  76   g_thread_safe_sender.Get() = thread_safe_sender();
  77 }
  78
  79 GpuChildThread::GpuChildThread(const std::string& channel_id)
  80     : ChildThreadImpl(Options(channel_id, false)),
  81       dead_on_arrival_(false),
  82       in_browser_process_(true) {
  83 #if defined(OS_WIN)
  84   target_services_ = NULL;
  85 #endif
  86   DCHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
  87              switches::kSingleProcess) ||
  88          base::CommandLine::ForCurrentProcess()->HasSwitch(
  89              switches::kInProcessGPU));
  90 #if !defined(OS_ANDROID)
  91   // For single process and in-process GPU mode, we need to load and
  92   // initialize the GL implementation and locate the GL entry points here.
  93   // On Android, GLSurface::InitializeOneOff() is called from BrowserMainLoop
  94   // before getting here. crbug.com/326295
  95   if (!gfx::GLSurface::InitializeOneOff())
  96     VLOG(1) << "gfx::GLSurface::InitializeOneOff failed";
  97 #endif
  98   g_thread_safe_sender.Get() = thread_safe_sender();
  99 }
 100
 101 GpuChildThread::~GpuChildThread() {
 102 }
 103
 104 void GpuChildThread::Shutdown() {
 105   ChildThreadImpl::Shutdown();
 106   logging::SetLogMessageHandler(NULL);
 107 }
 108
 109 void GpuChildThread::Init(const base::Time& process_start_time) {
 110   process_start_time_ = process_start_time;
 111 }
 112
 113 bool GpuChildThread::Send(IPC::Message* msg) {
 114   // The GPU process must never send a synchronous IPC message to the browser
 115   // process. This could result in deadlock.
 116   DCHECK(!msg->is_sync());
 117
 118   return ChildThreadImpl::Send(msg);
 119 }
 120
 121 bool GpuChildThread::OnControlMessageReceived(const IPC::Message& msg) {
 122   bool handled = true;
 123   IPC_BEGIN_MESSAGE_MAP(GpuChildThread, msg)
 124     IPC_MESSAGE_HANDLER(GpuMsg_Initialize, OnInitialize)
 125     IPC_MESSAGE_HANDLER(GpuMsg_CollectGraphicsInfo, OnCollectGraphicsInfo)
 126     IPC_MESSAGE_HANDLER(GpuMsg_GetVideoMemoryUsageStats,
 127                         OnGetVideoMemoryUsageStats)
 128     IPC_MESSAGE_HANDLER(GpuMsg_Clean, OnClean)
 129     IPC_MESSAGE_HANDLER(GpuMsg_Crash, OnCrash)
 130     IPC_MESSAGE_HANDLER(GpuMsg_Hang, OnHang)
 131     IPC_MESSAGE_HANDLER(GpuMsg_DisableWatchdog, OnDisableWatchdog)
 132     IPC_MESSAGE_HANDLER(GpuMsg_GpuSwitched, OnGpuSwitched)
 133     IPC_MESSAGE_UNHANDLED(handled = false)
 134   IPC_END_MESSAGE_MAP()
 135
 136   if (handled)
 137     return true;
 138
 139 #if defined(USE_OZONE)
 140   if (ui::OzonePlatform::GetInstance()
 141           ->GetGpuPlatformSupport()
 142           ->OnMessageReceived(msg))
 143     return true;
 144 #endif
 145
 146   return gpu_channel_manager_.get() &&
 147       gpu_channel_manager_->OnMessageReceived(msg);
 148 }
 149
 150 void GpuChildThread::OnInitialize() {
 151   // Record initialization only after collecting the GPU info because that can
 152   // take a significant amount of time.
 153   gpu_info_.initialization_time = base::Time::Now() - process_start_time_;
 154   Send(new GpuHostMsg_Initialized(!dead_on_arrival_, gpu_info_));
 155   while (!deferred_messages_.empty()) {
 156     Send(deferred_messages_.front());
 157     deferred_messages_.pop();
 158   }
 159
 160   if (dead_on_arrival_) {
 161     LOG(ERROR) << "Exiting GPU process due to errors during initialization";
 162     base::MessageLoop::current()->Quit();
 163     return;
 164   }
 165
 166 #if defined(OS_ANDROID)
 167   base::PlatformThread::SetThreadPriority(
 168       base::PlatformThread::CurrentHandle(),
 169       base::kThreadPriority_Display);
 170 #endif
 171
 172   // We don't need to pipe log messages if we are running the GPU thread in
 173   // the browser process.
 174   if (!in_browser_process_)
 175     logging::SetLogMessageHandler(GpuProcessLogMessageHandler);
 176
 177   // Defer creation of the render thread. This is to prevent it from handling
 178   // IPC messages before the sandbox has been enabled and all other necessary
 179   // initialization has succeeded.
 180   gpu_channel_manager_.reset(
 181       new GpuChannelManager(GetRouter(),
 182                             watchdog_thread_.get(),
 183                             ChildProcess::current()->io_message_loop_proxy(),
 184                             ChildProcess::current()->GetShutDownEvent(),
 185                             channel()));
 186
 187 #if defined(USE_OZONE)
 188   ui::OzonePlatform::GetInstance()
 189       ->GetGpuPlatformSupport()
 190       ->OnChannelEstablished(this);
 191 #endif
 192 }
 193
 194 void GpuChildThread::StopWatchdog() {
 195   if (watchdog_thread_.get()) {
 196     watchdog_thread_->Stop();
 197   }
 198 }
 199
 200 void GpuChildThread::OnCollectGraphicsInfo() {
 201 #if defined(OS_WIN)
 202   // GPU full info collection should only happen on un-sandboxed GPU process
 203   // or single process/in-process gpu mode on Windows.
 204   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 205   DCHECK(command_line->HasSwitch(switches::kDisableGpuSandbox) ||
 206          in_browser_process_);
 207 #endif  // OS_WIN
 208
 209   gpu::CollectInfoResult result =
 210       gpu::CollectContextGraphicsInfo(&gpu_info_);
 211   switch (result) {
 212     case gpu::kCollectInfoFatalFailure:
 213       LOG(ERROR) << "gpu::CollectGraphicsInfo failed (fatal).";
 214       // TODO(piman): can we signal overall failure?
 215       break;
 216     case gpu::kCollectInfoNonFatalFailure:
 217       DVLOG(1) << "gpu::CollectGraphicsInfo failed (non-fatal).";
 218       break;
 219     case gpu::kCollectInfoNone:
 220       NOTREACHED();
 221       break;
 222     case gpu::kCollectInfoSuccess:
 223       break;
 224   }
 225   GetContentClient()->SetGpuInfo(gpu_info_);
 226
 227 #if defined(OS_WIN)
 228   // This is slow, but it's the only thing the unsandboxed GPU process does,
 229   // and GpuDataManager prevents us from sending multiple collecting requests,
 230   // so it's OK to be blocking.
 231   gpu::GetDxDiagnostics(&gpu_info_.dx_diagnostics);
 232   gpu_info_.dx_diagnostics_info_state = gpu::kCollectInfoSuccess;
 233 #endif  // OS_WIN
 234
 235   Send(new GpuHostMsg_GraphicsInfoCollected(gpu_info_));
 236
 237 #if defined(OS_WIN)
 238   if (!in_browser_process_) {
 239     // The unsandboxed GPU process fulfilled its duty.  Rest in peace.
 240     base::MessageLoop::current()->Quit();
 241   }
 242 #endif  // OS_WIN
 243 }
 244
 245 void GpuChildThread::OnGetVideoMemoryUsageStats() {
 246   GPUVideoMemoryUsageStats video_memory_usage_stats;
 247   if (gpu_channel_manager_)
 248     gpu_channel_manager_->gpu_memory_manager()->GetVideoMemoryUsageStats(
 249         &video_memory_usage_stats);
 250   Send(new GpuHostMsg_VideoMemoryUsageStats(video_memory_usage_stats));
 251 }
 252
 253 void GpuChildThread::OnClean() {
 254   DVLOG(1) << "GPU: Removing all contexts";
 255   if (gpu_channel_manager_)
 256     gpu_channel_manager_->LoseAllContexts();
 257 }
 258
 259 void GpuChildThread::OnCrash() {
 260   DVLOG(1) << "GPU: Simulating GPU crash";
 261   // Good bye, cruel world.
 262   volatile int* it_s_the_end_of_the_world_as_we_know_it = NULL;
 263   *it_s_the_end_of_the_world_as_we_know_it = 0xdead;
 264 }
 265
 266 void GpuChildThread::OnHang() {
 267   DVLOG(1) << "GPU: Simulating GPU hang";
 268   for (;;) {
 269     // Do not sleep here. The GPU watchdog timer tracks the amount of user
 270     // time this thread is using and it doesn't use much while calling Sleep.
 271   }
 272 }
 273
 274 void GpuChildThread::OnDisableWatchdog() {
 275   DVLOG(1) << "GPU: Disabling watchdog thread";
 276   if (watchdog_thread_.get()) {
 277     // Disarm the watchdog before shutting down the message loop. This prevents
 278     // the future posting of tasks to the message loop.
 279     if (watchdog_thread_->message_loop())
 280       watchdog_thread_->PostAcknowledge();
 281     // Prevent rearming.
 282     watchdog_thread_->Stop();
 283   }
 284 }
 285
 286 void GpuChildThread::OnGpuSwitched() {
 287   DVLOG(1) << "GPU: GPU has switched";
 288   // Notify observers in the GPU process.
 289   ui::GpuSwitchingManager::GetInstance()->NotifyGpuSwitched();
 290 }
 291
 292 }  // namespace content
 293