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 "content/browser/browser_main.h" 6 7 #include <memory> 8 9 #include "base/trace_event/trace_event.h" 10 #include "content/browser/browser_main_runner_impl.h" 11 #include "content/common/content_constants_internal.h" 12 13 namespace content { 14 15 namespace { 16 17 // Generates a pair of BrowserMain async events. We don't use the TRACE_EVENT0 18 // macro because the tracing infrastructure doesn't expect synchronous events 19 // around the main loop of a thread. 20 class ScopedBrowserMainEvent { 21 public: ScopedBrowserMainEvent()22 ScopedBrowserMainEvent() { 23 TRACE_EVENT_ASYNC_BEGIN0("startup", "BrowserMain", 0); 24 } ~ScopedBrowserMainEvent()25 ~ScopedBrowserMainEvent() { 26 TRACE_EVENT_ASYNC_END0("startup", "BrowserMain", 0); 27 } 28 }; 29 30 } // namespace 31 32 // Main routine for running as the Browser process. BrowserMain(const MainFunctionParams & parameters)33int BrowserMain(const MainFunctionParams& parameters) { 34 ScopedBrowserMainEvent scoped_browser_main_event; 35 36 base::trace_event::TraceLog::GetInstance()->set_process_name("Browser"); 37 base::trace_event::TraceLog::GetInstance()->SetProcessSortIndex( 38 kTraceEventBrowserProcessSortIndex); 39 40 std::unique_ptr<BrowserMainRunnerImpl> main_runner( 41 BrowserMainRunnerImpl::Create()); 42 43 int exit_code = main_runner->Initialize(parameters); 44 if (exit_code >= 0) 45 return exit_code; 46 47 exit_code = main_runner->Run(); 48 49 main_runner->Shutdown(); 50 51 return exit_code; 52 } 53 54 } // namespace content 55