content/browser/browser_main_runner.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 "content/public/browser/browser_main_runner.h"
   6
   7 #include "base/allocator/allocator_shim.h"
   8 #include "base/base_switches.h"
   9 #include "base/command_line.h"
  10 #include "base/debug/leak_annotations.h"
  11 #include "base/debug/trace_event.h"
  12 #include "base/logging.h"
  13 #include "base/metrics/histogram.h"
  14 #include "base/metrics/statistics_recorder.h"
  15 #include "content/browser/browser_main_loop.h"
  16 #include "content/browser/browser_shutdown_profile_dumper.h"
  17 #include "content/browser/notification_service_impl.h"
  18 #include "content/public/common/content_switches.h"
  19 #include "content/public/common/main_function_params.h"
  20 #include "ui/base/ime/input_method_initializer.h"
  21
  22 #if defined(OS_WIN)
  23 #include "base/win/windows_version.h"
  24 #include "ui/base/win/scoped_ole_initializer.h"
  25 #endif
  26
  27 bool g_exited_main_message_loop = false;
  28
  29 namespace content {
  30
  31 class BrowserMainRunnerImpl : public BrowserMainRunner {
  32  public:
  33   BrowserMainRunnerImpl()
  34       : initialization_started_(false), is_shutdown_(false) {}
  35
  36   virtual ~BrowserMainRunnerImpl() {
  37     if (initialization_started_ && !is_shutdown_)
  38       Shutdown();
  39   }
  40
  41   virtual int Initialize(const MainFunctionParams& parameters) OVERRIDE {
  42     TRACE_EVENT0("startup", "BrowserMainRunnerImpl::Initialize");
  43     // On Android we normally initialize the browser in a series of UI thread
  44     // tasks. While this is happening a second request can come from the OS or
  45     // another application to start the browser. If this happens then we must
  46     // not run these parts of initialization twice.
  47     if (!initialization_started_) {
  48       initialization_started_ = true;
  49
  50 #if !defined(OS_IOS)
  51       if (parameters.command_line.HasSwitch(switches::kWaitForDebugger))
  52         base::debug::WaitForDebugger(60, true);
  53 #endif
  54
  55 #if defined(OS_WIN)
  56       if (base::win::GetVersion() < base::win::VERSION_VISTA) {
  57         // When "Extend support of advanced text services to all programs"
  58         // (a.k.a. Cicero Unaware Application Support; CUAS) is enabled on
  59         // Windows XP and handwriting modules shipped with Office 2003 are
  60         // installed, "penjpn.dll" and "skchui.dll" will be loaded and then
  61         // crash unless a user installs Office 2003 SP3. To prevent these
  62         // modules from being loaded, disable TSF entirely. crbug.com/160914.
  63         // TODO(yukawa): Add a high-level wrapper for this instead of calling
  64         // Win32 API here directly.
  65         ImmDisableTextFrameService(static_cast<DWORD>(-1));
  66       }
  67 #endif  // OS_WIN
  68
  69       base::StatisticsRecorder::Initialize();
  70
  71       notification_service_.reset(new NotificationServiceImpl);
  72
  73 #if defined(OS_WIN)
  74       // Ole must be initialized before starting message pump, so that TSF
  75       // (Text Services Framework) module can interact with the message pump
  76       // on Windows 8 Metro mode.
  77       ole_initializer_.reset(new ui::ScopedOleInitializer);
  78 #endif  // OS_WIN
  79
  80       main_loop_.reset(new BrowserMainLoop(parameters));
  81
  82       main_loop_->Init();
  83
  84       main_loop_->EarlyInitialization();
  85
  86       // Must happen before we try to use a message loop or display any UI.
  87       if (!main_loop_->InitializeToolkit())
  88         return 1;
  89
  90       main_loop_->MainMessageLoopStart();
  91
  92 // WARNING: If we get a WM_ENDSESSION, objects created on the stack here
  93 // are NOT deleted. If you need something to run during WM_ENDSESSION add it
  94 // to browser_shutdown::Shutdown or BrowserProcess::EndSession.
  95
  96 #if defined(OS_WIN) && !defined(NO_TCMALLOC)
  97       // When linking shared libraries, NO_TCMALLOC is defined, and dynamic
  98       // allocator selection is not supported.
  99
 100       // Make this call before going multithreaded, or spawning any
 101       // subprocesses.
 102       base::allocator::SetupSubprocessAllocator();
 103 #endif
 104       ui::InitializeInputMethod();
 105     }
 106     main_loop_->CreateStartupTasks();
 107     int result_code = main_loop_->GetResultCode();
 108     if (result_code > 0)
 109       return result_code;
 110
 111     // Return -1 to indicate no early termination.
 112     return -1;
 113   }
 114
 115   virtual int Run() OVERRIDE {
 116     DCHECK(initialization_started_);
 117     DCHECK(!is_shutdown_);
 118     main_loop_->RunMainMessageLoopParts();
 119     return main_loop_->GetResultCode();
 120   }
 121
 122   virtual void Shutdown() OVERRIDE {
 123     DCHECK(initialization_started_);
 124     DCHECK(!is_shutdown_);
 125 #ifdef LEAK_SANITIZER
 126     // Invoke leak detection now, to avoid dealing with shutdown-only leaks.
 127     // Normally this will have already happened in
 128     // BroserProcessImpl::ReleaseModule(), so this call has no effect. This is
 129     // only for processes which do not instantiate a BrowserProcess.
 130     // If leaks are found, the process will exit here.
 131     __lsan_do_leak_check();
 132 #endif
 133     // The shutdown tracing got enabled in AttemptUserExit earlier, but someone
 134     // needs to write the result to disc. For that a dumper needs to get created
 135     // which will dump the traces to disc when it gets destroyed.
 136     const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 137     scoped_ptr<BrowserShutdownProfileDumper> profiler;
 138     if (command_line.HasSwitch(switches::kTraceShutdown))
 139       profiler.reset(new BrowserShutdownProfileDumper());
 140
 141     {
 142       // The trace event has to stay between profiler creation and destruction.
 143       TRACE_EVENT0("shutdown", "BrowserMainRunner");
 144       g_exited_main_message_loop = true;
 145
 146       main_loop_->ShutdownThreadsAndCleanUp();
 147
 148       ui::ShutdownInputMethod();
 149   #if defined(OS_WIN)
 150       ole_initializer_.reset(NULL);
 151   #endif
 152
 153       main_loop_.reset(NULL);
 154
 155       notification_service_.reset(NULL);
 156
 157       is_shutdown_ = true;
 158     }
 159   }
 160
 161  protected:
 162   // True if we have started to initialize the runner.
 163   bool initialization_started_;
 164
 165   // True if the runner has been shut down.
 166   bool is_shutdown_;
 167
 168   scoped_ptr<NotificationServiceImpl> notification_service_;
 169   scoped_ptr<BrowserMainLoop> main_loop_;
 170 #if defined(OS_WIN)
 171   scoped_ptr<ui::ScopedOleInitializer> ole_initializer_;
 172 #endif
 173
 174   DISALLOW_COPY_AND_ASSIGN(BrowserMainRunnerImpl);
 175 };
 176
 177 // static
 178 BrowserMainRunner* BrowserMainRunner::Create() {
 179   return new BrowserMainRunnerImpl();
 180 }
 181
 182 }  // namespace content