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       main_loop_->InitializeToolkit();
  88
  89       main_loop_->MainMessageLoopStart();
  90
  91 // WARNING: If we get a WM_ENDSESSION, objects created on the stack here
  92 // are NOT deleted. If you need something to run during WM_ENDSESSION add it
  93 // to browser_shutdown::Shutdown or BrowserProcess::EndSession.
  94
  95 #if defined(OS_WIN) && !defined(NO_TCMALLOC)
  96       // When linking shared libraries, NO_TCMALLOC is defined, and dynamic
  97       // allocator selection is not supported.
  98
  99       // Make this call before going multithreaded, or spawning any
 100       // subprocesses.
 101       base::allocator::SetupSubprocessAllocator();
 102 #endif
 103       ui::InitializeInputMethod();
 104     }
 105     main_loop_->CreateStartupTasks();
 106     int result_code = main_loop_->GetResultCode();
 107     if (result_code > 0)
 108       return result_code;
 109
 110     // Return -1 to indicate no early termination.
 111     return -1;
 112   }
 113
 114   virtual int Run() OVERRIDE {
 115     DCHECK(initialization_started_);
 116     DCHECK(!is_shutdown_);
 117     main_loop_->RunMainMessageLoopParts();
 118     return main_loop_->GetResultCode();
 119   }
 120
 121   virtual void Shutdown() OVERRIDE {
 122     DCHECK(initialization_started_);
 123     DCHECK(!is_shutdown_);
 124 #ifdef LEAK_SANITIZER
 125     // Invoke leak detection now, to avoid dealing with shutdown-only leaks.
 126     // Normally this will have already happened in
 127     // BroserProcessImpl::ReleaseModule(), so this call has no effect. This is
 128     // only for processes which do not instantiate a BrowserProcess.
 129     // If leaks are found, the process will exit here.
 130     __lsan_do_leak_check();
 131 #endif
 132     // The shutdown tracing got enabled in AttemptUserExit earlier, but someone
 133     // needs to write the result to disc. For that a dumper needs to get created
 134     // which will dump the traces to disc when it gets destroyed.
 135     const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 136     scoped_ptr<BrowserShutdownProfileDumper> profiler;
 137     if (command_line.HasSwitch(switches::kTraceShutdown))
 138       profiler.reset(new BrowserShutdownProfileDumper());
 139
 140     {
 141       // The trace event has to stay between profiler creation and destruction.
 142       TRACE_EVENT0("shutdown", "BrowserMainRunner");
 143       g_exited_main_message_loop = true;
 144
 145       main_loop_->ShutdownThreadsAndCleanUp();
 146
 147       ui::ShutdownInputMethod();
 148   #if defined(OS_WIN)
 149       ole_initializer_.reset(NULL);
 150   #endif
 151
 152       main_loop_.reset(NULL);
 153
 154       notification_service_.reset(NULL);
 155
 156       is_shutdown_ = true;
 157     }
 158   }
 159
 160  protected:
 161   // True if we have started to initialize the runner.
 162   bool initialization_started_;
 163
 164   // True if the runner has been shut down.
 165   bool is_shutdown_;
 166
 167   scoped_ptr<NotificationServiceImpl> notification_service_;
 168   scoped_ptr<BrowserMainLoop> main_loop_;
 169 #if defined(OS_WIN)
 170   scoped_ptr<ui::ScopedOleInitializer> ole_initializer_;
 171 #endif
 172
 173   DISALLOW_COPY_AND_ASSIGN(BrowserMainRunnerImpl);
 174 };
 175
 176 // static
 177 BrowserMainRunner* BrowserMainRunner::Create() {
 178   return new BrowserMainRunnerImpl();
 179 }
 180
 181 }  // namespace content