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