| // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <stdlib.h> |
| |
| #if defined(OS_WIN) |
| #include <windows.h> |
| #endif |
| |
| #include "base/environment.h" |
| #include "base/message_loop.h" |
| #include "base/stringprintf.h" |
| #include "base/threading/platform_thread.h" |
| #include "base/win/scoped_com_initializer.h" |
| #include "build/build_config.h" |
| #include "content/common/content_switches.h" |
| #include "content/common/gpu/gpu_config.h" |
| #include "content/common/main_function_params.h" |
| #include "content/gpu/gpu_child_thread.h" |
| #include "content/gpu/gpu_process.h" |
| #include "ui/gfx/gl/gl_surface.h" |
| #include "ui/gfx/gl/gl_switches.h" |
| |
| #if defined(OS_MACOSX) |
| #include "content/common/chrome_application_mac.h" |
| #elif defined(OS_WIN) |
| #include "sandbox/src/sandbox.h" |
| #endif |
| |
| #if defined(USE_X11) |
| #include "ui/base/x/x11_util.h" |
| #endif |
| |
| // Main function for starting the Gpu process. |
| int GpuMain(const MainFunctionParams& parameters) { |
| base::Time start_time = base::Time::Now(); |
| |
| const CommandLine& command_line = parameters.command_line_; |
| if (command_line.HasSwitch(switches::kGpuStartupDialog)) { |
| ChildProcess::WaitForDebugger("Gpu"); |
| } |
| |
| if (!command_line.HasSwitch(switches::kSingleProcess)) { |
| #if defined(OS_WIN) |
| // Prevent Windows from displaying a modal dialog on failures like not being |
| // able to load a DLL. |
| SetErrorMode( |
| SEM_FAILCRITICALERRORS | |
| SEM_NOGPFAULTERRORBOX | |
| SEM_NOOPENFILEERRORBOX); |
| #elif defined(USE_X11) |
| ui::SetDefaultX11ErrorHandlers(); |
| #endif |
| } |
| |
| // Initialization of the OpenGL bindings may fail, in which case we |
| // will need to tear down this process. However, we can not do so |
| // safely until the IPC channel is set up, because the detection of |
| // early return of a child process is implemented using an IPC |
| // channel error. If the IPC channel is not fully set up between the |
| // browser and GPU process, and the GPU process crashes or exits |
| // early, the browser process will never detect it. For this reason |
| // we defer tearing down the GPU process until receiving the |
| // GpuMsg_Initialize message from the browser. |
| bool dead_on_arrival = false; |
| |
| // Load the GL implementation and locate the bindings before starting the GPU |
| // watchdog because this can take a lot of time and the GPU watchdog might |
| // terminate the GPU process. |
| if (!gfx::GLSurface::InitializeOneOff()) { |
| LOG(INFO) << "GLContext::InitializeOneOff failed"; |
| dead_on_arrival = true; |
| } |
| |
| base::win::ScopedCOMInitializer com_initializer; |
| |
| #if defined(OS_WIN) |
| sandbox::TargetServices* target_services = |
| parameters.sandbox_info_.TargetServices(); |
| // For windows, if the target_services interface is not zero, the process |
| // is sandboxed and we must call LowerToken() before rendering untrusted |
| // content. |
| if (target_services) |
| target_services->LowerToken(); |
| #endif |
| |
| #if defined(OS_MACOSX) |
| chrome_application_mac::RegisterCrApp(); |
| #endif |
| |
| MessageLoop::Type message_loop_type = MessageLoop::TYPE_UI; |
| #if defined(OS_WIN) |
| // Unless we're running on desktop GL, we don't need a UI message |
| // loop, so avoid its use to work around apparent problems with some |
| // third-party software. |
| message_loop_type = MessageLoop::TYPE_IO; |
| if (command_line.HasSwitch(switches::kUseGL) && |
| command_line.GetSwitchValueASCII(switches::kUseGL) == |
| gfx::kGLImplementationDesktopName) { |
| message_loop_type = MessageLoop::TYPE_UI; |
| } |
| #endif |
| |
| MessageLoop main_message_loop(message_loop_type); |
| base::PlatformThread::SetName("CrGpuMain"); |
| |
| GpuProcess gpu_process; |
| |
| GpuChildThread* child_thread = new GpuChildThread(dead_on_arrival); |
| |
| child_thread->Init(start_time); |
| |
| gpu_process.set_main_thread(child_thread); |
| |
| main_message_loop.Run(); |
| |
| child_thread->StopWatchdog(); |
| |
| return 0; |
| } |