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