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::Builder builder;
  49
  50 #if defined(USE_OZONE)
  51   IPC::MessageFilter* message_filter = ui::OzonePlatform::GetInstance()
  52                                            ->GetGpuPlatformSupport()
  53                                            ->GetMessageFilter();
  54   if (message_filter)
  55     builder.AddStartupFilter(message_filter);
  56 #endif
  57
  58   return builder.Build();
  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 InProcessChildThreadParams& params)
  80     : ChildThreadImpl(ChildThreadImpl::Options::Builder()
  81                           .InBrowserProcess(params)
  82                           .Build()),
  83       dead_on_arrival_(false),
  84       in_browser_process_(true) {
  85 #if defined(OS_WIN)
  86   target_services_ = NULL;
  87 #endif
  88   DCHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
  89              switches::kSingleProcess) ||
  90          base::CommandLine::ForCurrentProcess()->HasSwitch(
  91              switches::kInProcessGPU));
  92 #if !defined(OS_ANDROID)
  93   // For single process and in-process GPU mode, we need to load and
  94   // initialize the GL implementation and locate the GL entry points here.
  95   // On Android, GLSurface::InitializeOneOff() is called from BrowserMainLoop
  96   // before getting here. crbug.com/326295
  97   if (!gfx::GLSurface::InitializeOneOff())
  98     VLOG(1) << "gfx::GLSurface::InitializeOneOff failed";
  99 #endif
 100   g_thread_safe_sender.Get() = thread_safe_sender();
 101 }
 102
 103 GpuChildThread::~GpuChildThread() {
 104 }
 105
 106 void GpuChildThread::Shutdown() {
 107   ChildThreadImpl::Shutdown();
 108   logging::SetLogMessageHandler(NULL);
 109 }
 110
 111 void GpuChildThread::Init(const base::Time& process_start_time) {
 112   process_start_time_ = process_start_time;
 113 }
 114
 115 bool GpuChildThread::Send(IPC::Message* msg) {
 116   // The GPU process must never send a synchronous IPC message to the browser
 117   // process. This could result in deadlock.
 118   DCHECK(!msg->is_sync());
 119
 120   return ChildThreadImpl::Send(msg);
 121 }
 122
 123 bool GpuChildThread::OnControlMessageReceived(const IPC::Message& msg) {
 124   bool handled = true;
 125   IPC_BEGIN_MESSAGE_MAP(GpuChildThread, msg)
 126     IPC_MESSAGE_HANDLER(GpuMsg_Initialize, OnInitialize)
 127     IPC_MESSAGE_HANDLER(GpuMsg_CollectGraphicsInfo, OnCollectGraphicsInfo)
 128     IPC_MESSAGE_HANDLER(GpuMsg_GetVideoMemoryUsageStats,
 129                         OnGetVideoMemoryUsageStats)
 130     IPC_MESSAGE_HANDLER(GpuMsg_Clean, OnClean)
 131     IPC_MESSAGE_HANDLER(GpuMsg_Crash, OnCrash)
 132     IPC_MESSAGE_HANDLER(GpuMsg_Hang, OnHang)
 133     IPC_MESSAGE_HANDLER(GpuMsg_DisableWatchdog, OnDisableWatchdog)
 134     IPC_MESSAGE_HANDLER(GpuMsg_GpuSwitched, OnGpuSwitched)
 135     IPC_MESSAGE_UNHANDLED(handled = false)
 136   IPC_END_MESSAGE_MAP()
 137
 138   if (handled)
 139     return true;
 140
 141 #if defined(USE_OZONE)
 142   if (ui::OzonePlatform::GetInstance()
 143           ->GetGpuPlatformSupport()
 144           ->OnMessageReceived(msg))
 145     return true;
 146 #endif
 147
 148   return gpu_channel_manager_.get() &&
 149       gpu_channel_manager_->OnMessageReceived(msg);
 150 }
 151
 152 void GpuChildThread::OnInitialize() {
 153   // Record initialization only after collecting the GPU info because that can
 154   // take a significant amount of time.
 155   gpu_info_.initialization_time = base::Time::Now() - process_start_time_;
 156   Send(new GpuHostMsg_Initialized(!dead_on_arrival_, gpu_info_));
 157   while (!deferred_messages_.empty()) {
 158     Send(deferred_messages_.front());
 159     deferred_messages_.pop();
 160   }
 161
 162   if (dead_on_arrival_) {
 163     LOG(ERROR) << "Exiting GPU process due to errors during initialization";
 164     base::MessageLoop::current()->Quit();
 165     return;
 166   }
 167
 168 #if defined(OS_ANDROID)
 169   base::PlatformThread::SetThreadPriority(base::PlatformThread::CurrentHandle(),
 170                                           base::ThreadPriority::DISPLAY);
 171 #endif
 172
 173   // We don't need to pipe log messages if we are running the GPU thread in
 174   // the browser process.
 175   if (!in_browser_process_)
 176     logging::SetLogMessageHandler(GpuProcessLogMessageHandler);
 177
 178   // Defer creation of the render thread. This is to prevent it from handling
 179   // IPC messages before the sandbox has been enabled and all other necessary
 180   // initialization has succeeded.
 181   gpu_channel_manager_.reset(
 182       new GpuChannelManager(GetRouter(),
 183                             watchdog_thread_.get(),
 184                             ChildProcess::current()->io_message_loop_proxy(),
 185                             ChildProcess::current()->GetShutDownEvent(),
 186                             channel()));
 187
 188 #if defined(USE_OZONE)
 189   ui::OzonePlatform::GetInstance()
 190       ->GetGpuPlatformSupport()
 191       ->OnChannelEstablished(this);
 192 #endif
 193 }
 194
 195 void GpuChildThread::StopWatchdog() {
 196   if (watchdog_thread_.get()) {
 197     watchdog_thread_->Stop();
 198   }
 199 }
 200
 201 void GpuChildThread::OnCollectGraphicsInfo() {
 202 #if defined(OS_WIN)
 203   // GPU full info collection should only happen on un-sandboxed GPU process
 204   // or single process/in-process gpu mode on Windows.
 205   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 206   DCHECK(command_line->HasSwitch(switches::kDisableGpuSandbox) ||
 207          in_browser_process_);
 208 #endif  // OS_WIN
 209
 210   gpu::CollectInfoResult result =
 211       gpu::CollectContextGraphicsInfo(&gpu_info_);
 212   switch (result) {
 213     case gpu::kCollectInfoFatalFailure:
 214       LOG(ERROR) << "gpu::CollectGraphicsInfo failed (fatal).";
 215       // TODO(piman): can we signal overall failure?
 216       break;
 217     case gpu::kCollectInfoNonFatalFailure:
 218       DVLOG(1) << "gpu::CollectGraphicsInfo failed (non-fatal).";
 219       break;
 220     case gpu::kCollectInfoNone:
 221       NOTREACHED();
 222       break;
 223     case gpu::kCollectInfoSuccess:
 224       break;
 225   }
 226   GetContentClient()->SetGpuInfo(gpu_info_);
 227
 228 #if defined(OS_WIN)
 229   // This is slow, but it's the only thing the unsandboxed GPU process does,
 230   // and GpuDataManager prevents us from sending multiple collecting requests,
 231   // so it's OK to be blocking.
 232   gpu::GetDxDiagnostics(&gpu_info_.dx_diagnostics);
 233   gpu_info_.dx_diagnostics_info_state = gpu::kCollectInfoSuccess;
 234 #endif  // OS_WIN
 235
 236   Send(new GpuHostMsg_GraphicsInfoCollected(gpu_info_));
 237
 238 #if defined(OS_WIN)
 239   if (!in_browser_process_) {
 240     // The unsandboxed GPU process fulfilled its duty.  Rest in peace.
 241     base::MessageLoop::current()->Quit();
 242   }
 243 #endif  // OS_WIN
 244 }
 245
 246 void GpuChildThread::OnGetVideoMemoryUsageStats() {
 247   GPUVideoMemoryUsageStats video_memory_usage_stats;
 248   if (gpu_channel_manager_)
 249     gpu_channel_manager_->gpu_memory_manager()->GetVideoMemoryUsageStats(
 250         &video_memory_usage_stats);
 251   Send(new GpuHostMsg_VideoMemoryUsageStats(video_memory_usage_stats));
 252 }
 253
 254 void GpuChildThread::OnClean() {
 255   DVLOG(1) << "GPU: Removing all contexts";
 256   if (gpu_channel_manager_)
 257     gpu_channel_manager_->LoseAllContexts();
 258 }
 259
 260 void GpuChildThread::OnCrash() {
 261   DVLOG(1) << "GPU: Simulating GPU crash";
 262   // Good bye, cruel world.
 263   volatile int* it_s_the_end_of_the_world_as_we_know_it = NULL;
 264   *it_s_the_end_of_the_world_as_we_know_it = 0xdead;
 265 }
 266
 267 void GpuChildThread::OnHang() {
 268   DVLOG(1) << "GPU: Simulating GPU hang";
 269   for (;;) {
 270     // Do not sleep here. The GPU watchdog timer tracks the amount of user
 271     // time this thread is using and it doesn't use much while calling Sleep.
 272   }
 273 }
 274
 275 void GpuChildThread::OnDisableWatchdog() {
 276   DVLOG(1) << "GPU: Disabling watchdog thread";
 277   if (watchdog_thread_.get()) {
 278     // Disarm the watchdog before shutting down the message loop. This prevents
 279     // the future posting of tasks to the message loop.
 280     if (watchdog_thread_->message_loop())
 281       watchdog_thread_->PostAcknowledge();
 282     // Prevent rearming.
 283     watchdog_thread_->Stop();
 284   }
 285 }
 286
 287 void GpuChildThread::OnGpuSwitched() {
 288   DVLOG(1) << "GPU: GPU has switched";
 289   // Notify observers in the GPU process.
 290   ui::GpuSwitchingManager::GetInstance()->NotifyGpuSwitched();
 291 }
 292
 293 }  // namespace content
 294