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