content/worker/worker_main.cc

   1 // Copyright (c) 2011 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 "base/base_switches.h"
   6 #include "base/command_line.h"
   7 #include "base/hi_res_timer_manager.h"
   8 #include "base/message_loop.h"
   9 #include "base/power_monitor/power_monitor.h"
  10 #include "base/strings/string_util.h"
  11 #include "base/threading/platform_thread.h"
  12 #include "content/child/child_process.h"
  13 #include "content/common/sandbox_linux.h"
  14 #include "content/public/common/main_function_params.h"
  15 #include "content/public/common/sandbox_init.h"
  16 #include "content/worker/worker_thread.h"
  17
  18 #if defined(OS_WIN)
  19 #include "sandbox/win/src/sandbox.h"
  20 #endif
  21
  22 #if defined(OS_MACOSX)
  23 #include "content/common/sandbox_mac.h"
  24 #endif
  25
  26 namespace content {
  27
  28 // Mainline routine for running as the worker process.
  29 int WorkerMain(const MainFunctionParams& parameters) {
  30   // The main message loop of the worker process.
  31   base::MessageLoop main_message_loop;
  32   base::PlatformThread::SetName("CrWorkerMain");
  33
  34   base::PowerMonitor power_monitor;
  35   HighResolutionTimerManager hi_res_timer_manager;
  36
  37 #if defined(OS_WIN)
  38   sandbox::TargetServices* target_services =
  39       parameters.sandbox_info->target_services;
  40   if (!target_services)
  41     return false;
  42
  43   // Cause advapi32 to load before the sandbox is turned on.
  44   unsigned int dummy_rand;
  45   rand_s(&dummy_rand);
  46   // Warm up language subsystems before the sandbox is turned on.
  47   ::GetUserDefaultLangID();
  48   ::GetUserDefaultLCID();
  49
  50   target_services->LowerToken();
  51 #elif defined(OS_MACOSX)
  52   // Sandbox should already be activated at this point.
  53   CHECK(Sandbox::SandboxIsCurrentlyActive());
  54 #elif defined(OS_LINUX)
  55   // On Linux, the sandbox must be initialized early, before any thread is
  56   // created.
  57   LinuxSandbox::InitializeSandbox();
  58 #endif
  59
  60   ChildProcess worker_process;
  61   worker_process.set_main_thread(new WorkerThread());
  62
  63   const CommandLine& parsed_command_line = parameters.command_line;
  64   if (parsed_command_line.HasSwitch(switches::kWaitForDebugger)) {
  65     ChildProcess::WaitForDebugger("Worker");
  66   }
  67
  68   // Load the accelerator table from the browser executable and tell the
  69   // message loop to use it when translating messages.
  70   base::MessageLoop::current()->Run();
  71
  72   return 0;
  73 }
  74
  75 }  // namespace content