content/gpu/gpu_main.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 <stdlib.h>
   6
   7 #if defined(OS_WIN)
   8 #include <dwmapi.h>
   9 #include <windows.h>
  10 #endif
  11
  12 #include "base/lazy_instance.h"
  13 #include "base/message_loop/message_loop.h"
  14 #include "base/metrics/histogram.h"
  15 #include "base/metrics/statistics_recorder.h"
  16 #include "base/rand_util.h"
  17 #include "base/strings/string_number_conversions.h"
  18 #include "base/strings/stringprintf.h"
  19 #include "base/third_party/dynamic_annotations/dynamic_annotations.h"
  20 #include "base/threading/platform_thread.h"
  21 #include "base/trace_event/trace_event.h"
  22 #include "build/build_config.h"
  23 #include "content/child/child_process.h"
  24 #include "content/common/content_constants_internal.h"
  25 #include "content/common/gpu/gpu_config.h"
  26 #include "content/common/gpu/gpu_messages.h"
  27 #include "content/common/gpu/media/gpu_video_decode_accelerator.h"
  28 #include "content/common/gpu/media/gpu_video_encode_accelerator.h"
  29 #include "content/common/sandbox_linux/sandbox_linux.h"
  30 #include "content/gpu/gpu_child_thread.h"
  31 #include "content/gpu/gpu_process.h"
  32 #include "content/gpu/gpu_watchdog_thread.h"
  33 #include "content/public/common/content_client.h"
  34 #include "content/public/common/content_switches.h"
  35 #include "content/public/common/main_function_params.h"
  36 #include "gpu/command_buffer/service/gpu_switches.h"
  37 #include "gpu/config/gpu_info_collector.h"
  38 #include "gpu/config/gpu_switches.h"
  39 #include "gpu/config/gpu_util.h"
  40 #include "ui/events/platform/platform_event_source.h"
  41 #include "ui/gl/gl_implementation.h"
  42 #include "ui/gl/gl_surface.h"
  43 #include "ui/gl/gl_switches.h"
  44 #include "ui/gl/gpu_switching_manager.h"
  45
  46 #if defined(OS_WIN)
  47 #include "base/win/windows_version.h"
  48 #include "base/win/scoped_com_initializer.h"
  49 #include "sandbox/win/src/sandbox.h"
  50 #endif
  51
  52 #if defined(USE_X11)
  53 #include "ui/base/x/x11_util.h"
  54 #endif
  55
  56 #if defined(OS_LINUX)
  57 #include "content/public/common/sandbox_init.h"
  58 #endif
  59
  60 #if defined(OS_MACOSX)
  61 #include "base/message_loop/message_pump_mac.h"
  62 #include "content/common/sandbox_mac.h"
  63 #endif
  64
  65 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
  66 #include "content/common/gpu/media/vaapi_wrapper.h"
  67 #endif
  68
  69 #if defined(SANITIZER_COVERAGE)
  70 #include <sanitizer/common_interface_defs.h>
  71 #include <sanitizer/coverage_interface.h>
  72 #endif
  73
  74 const int kGpuTimeout = 10000;
  75
  76 namespace content {
  77
  78 namespace {
  79
  80 void GetGpuInfoFromCommandLine(gpu::GPUInfo& gpu_info,
  81                                const base::CommandLine& command_line);
  82 bool WarmUpSandbox(const base::CommandLine& command_line);
  83
  84 #if !defined(OS_MACOSX)
  85 bool CollectGraphicsInfo(gpu::GPUInfo& gpu_info);
  86 #endif
  87
  88 #if defined(OS_LINUX)
  89 #if !defined(OS_CHROMEOS)
  90 bool CanAccessNvidiaDeviceFile();
  91 #endif
  92 bool StartSandboxLinux(const gpu::GPUInfo&, GpuWatchdogThread*, bool);
  93 #elif defined(OS_WIN)
  94 bool StartSandboxWindows(const sandbox::SandboxInterfaceInfo*);
  95 #endif
  96
  97 base::LazyInstance<GpuChildThread::DeferredMessages> deferred_messages =
  98     LAZY_INSTANCE_INITIALIZER;
  99
 100 bool GpuProcessLogMessageHandler(int severity,
 101                                  const char* file, int line,
 102                                  size_t message_start,
 103                                  const std::string& str) {
 104   std::string header = str.substr(0, message_start);
 105   std::string message = str.substr(message_start);
 106   deferred_messages.Get().push(new GpuHostMsg_OnLogMessage(
 107       severity, header, message));
 108   return false;
 109 }
 110
 111 }  // namespace anonymous
 112
 113 // Main function for starting the Gpu process.
 114 int GpuMain(const MainFunctionParams& parameters) {
 115   TRACE_EVENT0("gpu", "GpuMain");
 116   base::trace_event::TraceLog::GetInstance()->SetProcessName("GPU Process");
 117   base::trace_event::TraceLog::GetInstance()->SetProcessSortIndex(
 118       kTraceEventGpuProcessSortIndex);
 119
 120   const base::CommandLine& command_line = parameters.command_line;
 121   if (command_line.HasSwitch(switches::kGpuStartupDialog)) {
 122     ChildProcess::WaitForDebugger("Gpu");
 123   }
 124
 125   base::Time start_time = base::Time::Now();
 126
 127 #if defined(OS_WIN)
 128   // Prevent Windows from displaying a modal dialog on failures like not being
 129   // able to load a DLL.
 130   SetErrorMode(
 131       SEM_FAILCRITICALERRORS |
 132       SEM_NOGPFAULTERRORBOX |
 133       SEM_NOOPENFILEERRORBOX);
 134 #elif defined(USE_X11)
 135   ui::SetDefaultX11ErrorHandlers();
 136 #endif
 137
 138   logging::SetLogMessageHandler(GpuProcessLogMessageHandler);
 139
 140   if (command_line.HasSwitch(switches::kSupportsDualGpus)) {
 141     std::string types = command_line.GetSwitchValueASCII(
 142         switches::kGpuDriverBugWorkarounds);
 143     std::set<int> workarounds;
 144     gpu::StringToFeatureSet(types, &workarounds);
 145     if (workarounds.count(gpu::FORCE_DISCRETE_GPU) == 1)
 146       ui::GpuSwitchingManager::GetInstance()->ForceUseOfDiscreteGpu();
 147     else if (workarounds.count(gpu::FORCE_INTEGRATED_GPU) == 1)
 148       ui::GpuSwitchingManager::GetInstance()->ForceUseOfIntegratedGpu();
 149   }
 150
 151   // Initialization of the OpenGL bindings may fail, in which case we
 152   // will need to tear down this process. However, we can not do so
 153   // safely until the IPC channel is set up, because the detection of
 154   // early return of a child process is implemented using an IPC
 155   // channel error. If the IPC channel is not fully set up between the
 156   // browser and GPU process, and the GPU process crashes or exits
 157   // early, the browser process will never detect it.  For this reason
 158   // we defer tearing down the GPU process until receiving the
 159   // GpuMsg_Initialize message from the browser.
 160   bool dead_on_arrival = false;
 161
 162 #if defined(OS_WIN)
 163   // Use a UI message loop because ANGLE and the desktop GL platform can
 164   // create child windows to render to.
 165   base::MessageLoop main_message_loop(base::MessageLoop::TYPE_UI);
 166 #elif defined(OS_LINUX) && defined(USE_X11)
 167   // We need a UI loop so that we can grab the Expose events. See GLSurfaceGLX
 168   // and https://crbug.com/326995.
 169   base::MessageLoop main_message_loop(base::MessageLoop::TYPE_UI);
 170   scoped_ptr<ui::PlatformEventSource> event_source =
 171       ui::PlatformEventSource::CreateDefault();
 172 #elif defined(OS_LINUX)
 173   base::MessageLoop main_message_loop(base::MessageLoop::TYPE_DEFAULT);
 174 #elif defined(OS_MACOSX)
 175   // This is necessary for CoreAnimation layers hosted in the GPU process to be
 176   // drawn. See http://crbug.com/312462.
 177   scoped_ptr<base::MessagePump> pump(new base::MessagePumpCFRunLoop());
 178   base::MessageLoop main_message_loop(pump.Pass());
 179 #else
 180   base::MessageLoop main_message_loop(base::MessageLoop::TYPE_IO);
 181 #endif
 182
 183   base::PlatformThread::SetName("CrGpuMain");
 184
 185   // In addition to disabling the watchdog if the command line switch is
 186   // present, disable the watchdog on valgrind because the code is expected
 187   // to run slowly in that case.
 188   bool enable_watchdog =
 189       !command_line.HasSwitch(switches::kDisableGpuWatchdog) &&
 190       !RunningOnValgrind();
 191
 192   // Disable the watchdog in debug builds because they tend to only be run by
 193   // developers who will not appreciate the watchdog killing the GPU process.
 194 #ifndef NDEBUG
 195   enable_watchdog = false;
 196 #endif
 197
 198   bool delayed_watchdog_enable = false;
 199
 200 #if defined(OS_CHROMEOS)
 201   // Don't start watchdog immediately, to allow developers to switch to VT2 on
 202   // startup.
 203   delayed_watchdog_enable = true;
 204 #endif
 205
 206   scoped_refptr<GpuWatchdogThread> watchdog_thread;
 207
 208   // Start the GPU watchdog only after anything that is expected to be time
 209   // consuming has completed, otherwise the process is liable to be aborted.
 210   if (enable_watchdog && !delayed_watchdog_enable) {
 211     watchdog_thread = new GpuWatchdogThread(kGpuTimeout);
 212     base::Thread::Options options;
 213     options.timer_slack = base::TIMER_SLACK_MAXIMUM;
 214     watchdog_thread->StartWithOptions(options);
 215   }
 216
 217   // Initializes StatisticsRecorder which tracks UMA histograms.
 218   base::StatisticsRecorder::Initialize();
 219
 220   gpu::GPUInfo gpu_info;
 221   // Get vendor_id, device_id, driver_version from browser process through
 222   // commandline switches.
 223   GetGpuInfoFromCommandLine(gpu_info, command_line);
 224
 225 #if defined(OS_CHROMEOS) && defined(ARCH_CPU_X86_FAMILY)
 226   VaapiWrapper::PreSandboxInitialization();
 227 #endif
 228
 229   // Warm up resources that don't need access to GPUInfo.
 230   if (WarmUpSandbox(command_line)) {
 231 #if defined(OS_LINUX)
 232     bool initialized_sandbox = false;
 233     bool initialized_gl_context = false;
 234     bool should_initialize_gl_context = false;
 235     // On Chrome OS ARM Mali, GPU driver userspace creates threads when
 236     // initializing a GL context, so start the sandbox early.
 237     if (command_line.HasSwitch(switches::kGpuSandboxStartEarly)) {
 238       gpu_info.sandboxed = StartSandboxLinux(
 239           gpu_info, watchdog_thread.get(), should_initialize_gl_context);
 240       initialized_sandbox = true;
 241     }
 242 #endif  // defined(OS_LINUX)
 243
 244     base::TimeTicks before_initialize_one_off = base::TimeTicks::Now();
 245
 246     // Determine if we need to initialize GL here or it has already been done.
 247     bool gl_already_initialized = false;
 248 #if defined(OS_MACOSX)
 249     if (!command_line.HasSwitch(switches::kNoSandbox)) {
 250       // On Mac, if the sandbox is enabled, then GLSurface::InitializeOneOff()
 251       // is called from the sandbox warmup code before getting here.
 252       gl_already_initialized = true;
 253     }
 254 #endif
 255     if (command_line.HasSwitch(switches::kInProcessGPU)) {
 256       // With in-process GPU, GLSurface::InitializeOneOff() is called from
 257       // GpuChildThread before getting here.
 258       gl_already_initialized = true;
 259     }
 260
 261     // Load and initialize the GL implementation and locate the GL entry points.
 262     bool gl_initialized =
 263         gl_already_initialized
 264             ? gfx::GetGLImplementation() != gfx::kGLImplementationNone
 265             : gfx::GLSurface::InitializeOneOff();
 266     if (gl_initialized) {
 267       // We need to collect GL strings (VENDOR, RENDERER) for blacklisting
 268       // purposes. However, on Mac we don't actually use them. As documented in
 269       // crbug.com/222934, due to some driver issues, glGetString could take
 270       // multiple seconds to finish, which in turn cause the GPU process to
 271       // crash.
 272       // By skipping the following code on Mac, we don't really lose anything,
 273       // because the basic GPU information is passed down from browser process
 274       // and we already registered them through SetGpuInfo() above.
 275       base::TimeTicks before_collect_context_graphics_info =
 276           base::TimeTicks::Now();
 277 #if !defined(OS_MACOSX)
 278       if (!CollectGraphicsInfo(gpu_info))
 279         dead_on_arrival = true;
 280
 281 #if defined(OS_CHROMEOS) || defined(OS_ANDROID)
 282       // Recompute gpu driver bug workarounds - this is specifically useful
 283       // on systems where vendor_id/device_id aren't available.
 284       if (!command_line.HasSwitch(switches::kDisableGpuDriverBugWorkarounds)) {
 285         gpu::ApplyGpuDriverBugWorkarounds(
 286             gpu_info, const_cast<base::CommandLine*>(&command_line));
 287       }
 288 #endif
 289
 290 #if defined(OS_LINUX)
 291       initialized_gl_context = true;
 292 #if !defined(OS_CHROMEOS)
 293       if (gpu_info.gpu.vendor_id == 0x10de &&  // NVIDIA
 294           gpu_info.driver_vendor == "NVIDIA" &&
 295           !CanAccessNvidiaDeviceFile())
 296         dead_on_arrival = true;
 297 #endif  // !defined(OS_CHROMEOS)
 298 #endif  // defined(OS_LINUX)
 299 #endif  // !defined(OS_MACOSX)
 300       base::TimeDelta collect_context_time =
 301           base::TimeTicks::Now() - before_collect_context_graphics_info;
 302       UMA_HISTOGRAM_TIMES("GPU.CollectContextGraphicsInfo",
 303                           collect_context_time);
 304     } else {  // gl_initialized
 305       VLOG(1) << "gfx::GLSurface::InitializeOneOff failed";
 306       dead_on_arrival = true;
 307     }
 308
 309     base::TimeDelta initialize_one_off_time =
 310         base::TimeTicks::Now() - before_initialize_one_off;
 311     UMA_HISTOGRAM_MEDIUM_TIMES("GPU.InitializeOneOffMediumTime",
 312                                initialize_one_off_time);
 313
 314     if (enable_watchdog && delayed_watchdog_enable) {
 315       watchdog_thread = new GpuWatchdogThread(kGpuTimeout);
 316       base::Thread::Options options;
 317       options.timer_slack = base::TIMER_SLACK_MAXIMUM;
 318       watchdog_thread->StartWithOptions(options);
 319     }
 320
 321     // OSMesa is expected to run very slowly, so disable the watchdog in that
 322     // case.
 323     if (enable_watchdog &&
 324         gfx::GetGLImplementation() == gfx::kGLImplementationOSMesaGL) {
 325       watchdog_thread->Stop();
 326       watchdog_thread = NULL;
 327     }
 328
 329 #if defined(OS_LINUX)
 330     should_initialize_gl_context = !initialized_gl_context &&
 331                                    !dead_on_arrival;
 332
 333     if (!initialized_sandbox) {
 334       gpu_info.sandboxed = StartSandboxLinux(gpu_info, watchdog_thread.get(),
 335                                              should_initialize_gl_context);
 336     }
 337 #elif defined(OS_WIN)
 338     gpu_info.sandboxed = StartSandboxWindows(parameters.sandbox_info);
 339 #elif defined(OS_MACOSX)
 340     gpu_info.sandboxed = Sandbox::SandboxIsCurrentlyActive();
 341 #endif
 342
 343     gpu_info.video_decode_accelerator_supported_profiles =
 344         content::GpuVideoDecodeAccelerator::GetSupportedProfiles();
 345     gpu_info.video_encode_accelerator_supported_profiles =
 346         content::GpuVideoEncodeAccelerator::GetSupportedProfiles();
 347   } else {
 348     dead_on_arrival = true;
 349   }
 350
 351   logging::SetLogMessageHandler(NULL);
 352
 353   GpuProcess gpu_process;
 354
 355   GpuChildThread* child_thread = new GpuChildThread(watchdog_thread.get(),
 356                                                     dead_on_arrival,
 357                                                     gpu_info,
 358                                                     deferred_messages.Get());
 359   while (!deferred_messages.Get().empty())
 360     deferred_messages.Get().pop();
 361
 362   child_thread->Init(start_time);
 363
 364   gpu_process.set_main_thread(child_thread);
 365
 366   if (watchdog_thread.get())
 367     watchdog_thread->AddPowerObserver();
 368
 369   {
 370     TRACE_EVENT0("gpu", "Run Message Loop");
 371     main_message_loop.Run();
 372   }
 373
 374   child_thread->StopWatchdog();
 375
 376   return 0;
 377 }
 378
 379 namespace {
 380
 381 void GetGpuInfoFromCommandLine(gpu::GPUInfo& gpu_info,
 382                                const base::CommandLine& command_line) {
 383   DCHECK(command_line.HasSwitch(switches::kGpuVendorID) &&
 384          command_line.HasSwitch(switches::kGpuDeviceID) &&
 385          command_line.HasSwitch(switches::kGpuDriverVersion));
 386   bool success = base::HexStringToUInt(
 387       command_line.GetSwitchValueASCII(switches::kGpuVendorID),
 388       &gpu_info.gpu.vendor_id);
 389   DCHECK(success);
 390   success = base::HexStringToUInt(
 391       command_line.GetSwitchValueASCII(switches::kGpuDeviceID),
 392       &gpu_info.gpu.device_id);
 393   DCHECK(success);
 394   gpu_info.driver_vendor =
 395       command_line.GetSwitchValueASCII(switches::kGpuDriverVendor);
 396   gpu_info.driver_version =
 397       command_line.GetSwitchValueASCII(switches::kGpuDriverVersion);
 398   GetContentClient()->SetGpuInfo(gpu_info);
 399 }
 400
 401 bool WarmUpSandbox(const base::CommandLine& command_line) {
 402   {
 403     TRACE_EVENT0("gpu", "Warm up rand");
 404     // Warm up the random subsystem, which needs to be done pre-sandbox on all
 405     // platforms.
 406     (void) base::RandUint64();
 407   }
 408   return true;
 409 }
 410
 411 #if !defined(OS_MACOSX)
 412 bool CollectGraphicsInfo(gpu::GPUInfo& gpu_info) {
 413   bool res = true;
 414   gpu::CollectInfoResult result = gpu::CollectContextGraphicsInfo(&gpu_info);
 415   switch (result) {
 416     case gpu::kCollectInfoFatalFailure:
 417       LOG(ERROR) << "gpu::CollectGraphicsInfo failed (fatal).";
 418       res = false;
 419       break;
 420     case gpu::kCollectInfoNonFatalFailure:
 421       DVLOG(1) << "gpu::CollectGraphicsInfo failed (non-fatal).";
 422       break;
 423     case gpu::kCollectInfoNone:
 424       NOTREACHED();
 425       break;
 426     case gpu::kCollectInfoSuccess:
 427       break;
 428   }
 429   GetContentClient()->SetGpuInfo(gpu_info);
 430   return res;
 431 }
 432 #endif
 433
 434 #if defined(OS_LINUX)
 435 #if !defined(OS_CHROMEOS)
 436 bool CanAccessNvidiaDeviceFile() {
 437   bool res = true;
 438   base::ThreadRestrictions::AssertIOAllowed();
 439   if (access("/dev/nvidiactl", R_OK) != 0) {
 440     DVLOG(1) << "NVIDIA device file /dev/nvidiactl access denied";
 441     res = false;
 442   }
 443   return res;
 444 }
 445 #endif
 446
 447 void CreateDummyGlContext() {
 448   scoped_refptr<gfx::GLSurface> surface(
 449       gfx::GLSurface::CreateOffscreenGLSurface(gfx::Size()));
 450   if (!surface.get()) {
 451     DVLOG(1) << "gfx::GLSurface::CreateOffscreenGLSurface failed";
 452     return;
 453   }
 454
 455   // On Linux, this is needed to make sure /dev/nvidiactl has
 456   // been opened and its descriptor cached.
 457   scoped_refptr<gfx::GLContext> context(gfx::GLContext::CreateGLContext(
 458       NULL, surface.get(), gfx::PreferDiscreteGpu));
 459   if (!context.get()) {
 460     DVLOG(1) << "gfx::GLContext::CreateGLContext failed";
 461     return;
 462   }
 463
 464   // Similarly, this is needed for /dev/nvidia0.
 465   if (context->MakeCurrent(surface.get())) {
 466     context->ReleaseCurrent(surface.get());
 467   } else {
 468     DVLOG(1)  << "gfx::GLContext::MakeCurrent failed";
 469   }
 470 }
 471
 472 void WarmUpSandboxNvidia(const gpu::GPUInfo& gpu_info,
 473                          bool should_initialize_gl_context) {
 474   // We special case Optimus since the vendor_id we see may not be Nvidia.
 475   bool uses_nvidia_driver = (gpu_info.gpu.vendor_id == 0x10de &&  // NVIDIA.
 476                              gpu_info.driver_vendor == "NVIDIA") ||
 477                             gpu_info.optimus;
 478   if (uses_nvidia_driver && should_initialize_gl_context) {
 479     // We need this on Nvidia to pre-open /dev/nvidiactl and /dev/nvidia0.
 480     CreateDummyGlContext();
 481   }
 482 }
 483
 484 bool StartSandboxLinux(const gpu::GPUInfo& gpu_info,
 485                        GpuWatchdogThread* watchdog_thread,
 486                        bool should_initialize_gl_context) {
 487   TRACE_EVENT0("gpu", "Initialize sandbox");
 488
 489   bool res = false;
 490
 491   WarmUpSandboxNvidia(gpu_info, should_initialize_gl_context);
 492
 493   if (watchdog_thread) {
 494     // LinuxSandbox needs to be able to ensure that the thread
 495     // has really been stopped.
 496     LinuxSandbox::StopThread(watchdog_thread);
 497   }
 498
 499 #if defined(SANITIZER_COVERAGE)
 500   const std::string sancov_file_name =
 501       "gpu." + base::Uint64ToString(base::RandUint64());
 502   LinuxSandbox* linux_sandbox = LinuxSandbox::GetInstance();
 503   linux_sandbox->sanitizer_args()->coverage_sandboxed = 1;
 504   linux_sandbox->sanitizer_args()->coverage_fd =
 505       __sanitizer_maybe_open_cov_file(sancov_file_name.c_str());
 506   linux_sandbox->sanitizer_args()->coverage_max_block_size = 0;
 507 #endif
 508
 509   // LinuxSandbox::InitializeSandbox() must always be called
 510   // with only one thread.
 511   res = LinuxSandbox::InitializeSandbox();
 512   if (watchdog_thread) {
 513     base::Thread::Options options;
 514     options.timer_slack = base::TIMER_SLACK_MAXIMUM;
 515     watchdog_thread->StartWithOptions(options);
 516   }
 517
 518   return res;
 519 }
 520 #endif  // defined(OS_LINUX)
 521
 522 #if defined(OS_WIN)
 523 bool StartSandboxWindows(const sandbox::SandboxInterfaceInfo* sandbox_info) {
 524   TRACE_EVENT0("gpu", "Lower token");
 525
 526   // For Windows, if the target_services interface is not zero, the process
 527   // is sandboxed and we must call LowerToken() before rendering untrusted
 528   // content.
 529   sandbox::TargetServices* target_services = sandbox_info->target_services;
 530   if (target_services) {
 531 #if defined(ADDRESS_SANITIZER)
 532     // Bind and leak dbghelp.dll before the token is lowered, otherwise
 533     // AddressSanitizer will crash when trying to symbolize a report.
 534     if (!LoadLibraryA("dbghelp.dll"))
 535       return false;
 536 #endif
 537
 538     target_services->LowerToken();
 539     return true;
 540   }
 541
 542   return false;
 543 }
 544 #endif  // defined(OS_WIN)
 545
 546 }  // namespace.
 547
 548 }  // namespace content