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     // If startup tracing has not been finished yet, replace it's dumper
 134     // with special version, which would save trace file on exit (i.e.
 135     // startup tracing becomes a version of shutdown tracing).
 136     scoped_ptr<BrowserShutdownProfileDumper> startup_profiler;
 137     if (main_loop_->is_tracing_startup()) {
 138       main_loop_->StopStartupTracingTimer();
 139       if (main_loop_->startup_trace_file() !=
 140           base::FilePath().AppendASCII("none")) {
 141         startup_profiler.reset(
 142             new BrowserShutdownProfileDumper(main_loop_->startup_trace_file()));
 143       }
 144     }
 145
 146     // The shutdown tracing got enabled in AttemptUserExit earlier, but someone
 147     // needs to write the result to disc. For that a dumper needs to get created
 148     // which will dump the traces to disc when it gets destroyed.
 149     const base::CommandLine& command_line =
 150         *base::CommandLine::ForCurrentProcess();
 151     scoped_ptr<BrowserShutdownProfileDumper> shutdown_profiler;
 152     if (command_line.HasSwitch(switches::kTraceShutdown)) {
 153       shutdown_profiler.reset(new BrowserShutdownProfileDumper(
 154           BrowserShutdownProfileDumper::GetShutdownProfileFileName()));
 155     }
 156
 157     {
 158       // The trace event has to stay between profiler creation and destruction.
 159       TRACE_EVENT0("shutdown", "BrowserMainRunner");
 160       g_exited_main_message_loop = true;
 161
 162       main_loop_->ShutdownThreadsAndCleanUp();
 163
 164       ui::ShutdownInputMethod();
 165   #if defined(OS_WIN)
 166       ole_initializer_.reset(NULL);
 167   #endif
 168   #if defined(OS_ANDROID)
 169       // Forcefully terminates the RunLoop inside MessagePumpForUI, ensuring
 170       // proper shutdown for content_browsertests. Shutdown() is not used by
 171       // the actual browser.
 172       base::MessageLoop::current()->QuitNow();
 173   #endif
 174       main_loop_.reset(NULL);
 175
 176       notification_service_.reset(NULL);
 177
 178       is_shutdown_ = true;
 179     }
 180   }
 181
 182  protected:
 183   // True if we have started to initialize the runner.
 184   bool initialization_started_;
 185
 186   // True if the runner has been shut down.
 187   bool is_shutdown_;
 188
 189   scoped_ptr<NotificationServiceImpl> notification_service_;
 190   scoped_ptr<BrowserMainLoop> main_loop_;
 191 #if defined(OS_WIN)
 192   scoped_ptr<ui::ScopedOleInitializer> ole_initializer_;
 193 #endif
 194
 195   DISALLOW_COPY_AND_ASSIGN(BrowserMainRunnerImpl);
 196 };
 197
 198 // static
 199 BrowserMainRunner* BrowserMainRunner::Create() {
 200   return new BrowserMainRunnerImpl();
 201 }
 202
 203 }  // namespace content