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