content/renderer/renderer_main.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 "base/base_switches.h"
   6 #include "base/command_line.h"
   7 #include "base/debug/debugger.h"
   8 #include "base/debug/leak_annotations.h"
   9 #include "base/i18n/rtl.h"
  10 #include "base/message_loop/message_loop.h"
  11 #include "base/metrics/field_trial.h"
  12 #include "base/metrics/histogram.h"
  13 #include "base/metrics/statistics_recorder.h"
  14 #include "base/pending_task.h"
  15 #include "base/strings/string_util.h"
  16 #include "base/sys_info.h"
  17 #include "base/threading/platform_thread.h"
  18 #include "base/timer/hi_res_timer_manager.h"
  19 #include "base/trace_event/trace_event.h"
  20 #include "components/scheduler/renderer/renderer_scheduler.h"
  21 #include "content/child/child_process.h"
  22 #include "content/common/content_constants_internal.h"
  23 #include "content/public/common/content_switches.h"
  24 #include "content/public/common/main_function_params.h"
  25 #include "content/public/renderer/content_renderer_client.h"
  26 #include "content/renderer/render_process_impl.h"
  27 #include "content/renderer/render_thread_impl.h"
  28 #include "content/renderer/renderer_main_platform_delegate.h"
  29 #include "third_party/skia/include/core/SkGraphics.h"
  30 #include "ui/base/ui_base_switches.h"
  31
  32 #if defined(OS_ANDROID)
  33 #include "base/android/library_loader/library_loader_hooks.h"
  34 #endif  // OS_ANDROID
  35
  36 #if defined(OS_MACOSX)
  37 #include <Carbon/Carbon.h>
  38 #include <signal.h>
  39 #include <unistd.h>
  40
  41 #include "base/mac/scoped_nsautorelease_pool.h"
  42 #include "base/message_loop/message_pump_mac.h"
  43 #include "third_party/WebKit/public/web/WebView.h"
  44 #endif  // OS_MACOSX
  45
  46 #if defined(ENABLE_PLUGINS)
  47 #include "content/renderer/pepper/pepper_plugin_registry.h"
  48 #endif
  49
  50 #if defined(ENABLE_WEBRTC)
  51 #include "third_party/libjingle/overrides/init_webrtc.h"
  52 #endif
  53
  54 #if defined(USE_OZONE)
  55 #include "ui/ozone/public/client_native_pixmap_factory.h"
  56 #endif
  57
  58 namespace content {
  59 namespace {
  60 // This function provides some ways to test crash and assertion handling
  61 // behavior of the renderer.
  62 static void HandleRendererErrorTestParameters(
  63     const base::CommandLine& command_line) {
  64   if (command_line.HasSwitch(switches::kWaitForDebugger))
  65     base::debug::WaitForDebugger(60, true);
  66
  67   if (command_line.HasSwitch(switches::kRendererStartupDialog))
  68     ChildProcess::WaitForDebugger("Renderer");
  69 }
  70
  71 #if defined(USE_OZONE)
  72 base::LazyInstance<scoped_ptr<ui::ClientNativePixmapFactory>> g_pixmap_factory =
  73     LAZY_INSTANCE_INITIALIZER;
  74 #endif
  75
  76 }  // namespace
  77
  78 // mainline routine for running as the Renderer process
  79 int RendererMain(const MainFunctionParams& parameters) {
  80   TRACE_EVENT_BEGIN_ETW("RendererMain", 0, "");
  81   base::trace_event::TraceLog::GetInstance()->SetProcessName("Renderer");
  82   base::trace_event::TraceLog::GetInstance()->SetProcessSortIndex(
  83       kTraceEventRendererProcessSortIndex);
  84
  85   const base::CommandLine& parsed_command_line = parameters.command_line;
  86
  87 #if defined(OS_MACOSX)
  88   base::mac::ScopedNSAutoreleasePool* pool = parameters.autorelease_pool;
  89 #endif  // OS_MACOSX
  90
  91 #if defined(OS_CHROMEOS)
  92   // As Zygote process starts up earlier than browser process gets its own
  93   // locale (at login time for Chrome OS), we have to set the ICU default
  94   // locale for renderer process here.
  95   // ICU locale will be used for fallback font selection etc.
  96   if (parsed_command_line.HasSwitch(switches::kLang)) {
  97     const std::string locale =
  98         parsed_command_line.GetSwitchValueASCII(switches::kLang);
  99     base::i18n::SetICUDefaultLocale(locale);
 100   }
 101 #endif
 102
 103   SkGraphics::Init();
 104 #if defined(OS_ANDROID)
 105   const int kMB = 1024 * 1024;
 106   size_t font_cache_limit =
 107       base::SysInfo::IsLowEndDevice() ? kMB : 8 * kMB;
 108   SkGraphics::SetFontCacheLimit(font_cache_limit);
 109 #endif
 110
 111 #if defined(USE_OZONE)
 112   g_pixmap_factory.Get() = ui::ClientNativePixmapFactory::Create();
 113   ui::ClientNativePixmapFactory::SetInstance(g_pixmap_factory.Get().get());
 114 #endif
 115
 116   // This function allows pausing execution using the --renderer-startup-dialog
 117   // flag allowing us to attach a debugger.
 118   // Do not move this function down since that would mean we can't easily debug
 119   // whatever occurs before it.
 120   HandleRendererErrorTestParameters(parsed_command_line);
 121
 122   RendererMainPlatformDelegate platform(parameters);
 123 #if defined(OS_MACOSX)
 124   // As long as scrollbars on Mac are painted with Cocoa, the message pump
 125   // needs to be backed by a Foundation-level loop to process NSTimers. See
 126   // http://crbug.com/306348#c24 for details.
 127   scoped_ptr<base::MessagePump> pump(new base::MessagePumpNSRunLoop());
 128   scoped_ptr<base::MessageLoop> main_message_loop(
 129       new base::MessageLoop(pump.Pass()));
 130 #else
 131   // The main message loop of the renderer services doesn't have IO or UI tasks.
 132   scoped_ptr<base::MessageLoop> main_message_loop(new base::MessageLoop());
 133 #endif
 134
 135   base::PlatformThread::SetName("CrRendererMain");
 136   scoped_ptr<scheduler::RendererScheduler> renderer_scheduler(
 137       scheduler::RendererScheduler::Create());
 138
 139   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);
 140
 141   // Initialize histogram statistics gathering system.
 142   base::StatisticsRecorder::Initialize();
 143
 144 #if defined(OS_ANDROID)
 145   // If we have a pending chromium android linker histogram, record it.
 146   base::android::RecordChromiumAndroidLinkerRendererHistogram();
 147 #endif
 148
 149   // Initialize statistical testing infrastructure.  We set the entropy provider
 150   // to NULL to disallow the renderer process from creating its own one-time
 151   // randomized trials; they should be created in the browser process.
 152   base::FieldTrialList field_trial_list(NULL);
 153   // Ensure any field trials in browser are reflected into renderer.
 154   if (parsed_command_line.HasSwitch(switches::kForceFieldTrials)) {
 155     bool result = base::FieldTrialList::CreateTrialsFromString(
 156         parsed_command_line.GetSwitchValueASCII(switches::kForceFieldTrials),
 157         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
 158         std::set<std::string>());
 159     DCHECK(result);
 160   }
 161
 162   // PlatformInitialize uses FieldTrials, so this must happen later.
 163   platform.PlatformInitialize();
 164
 165 #if defined(ENABLE_PLUGINS)
 166   // Load pepper plugins before engaging the sandbox.
 167   PepperPluginRegistry::GetInstance();
 168 #endif
 169 #if defined(ENABLE_WEBRTC)
 170   // Initialize WebRTC before engaging the sandbox.
 171   // NOTE: On linux, this call could already have been made from
 172   // zygote_main_linux.cc.  However, calling multiple times from the same thread
 173   // is OK.
 174   InitializeWebRtcModule();
 175 #endif
 176
 177   {
 178 #if defined(OS_WIN) || defined(OS_MACOSX)
 179     // TODO(markus): Check if it is OK to unconditionally move this
 180     // instruction down.
 181     RenderProcessImpl render_process;
 182     RenderThreadImpl::Create(main_message_loop.Pass(),
 183                              renderer_scheduler.Pass());
 184 #endif
 185     bool run_loop = true;
 186     if (!no_sandbox)
 187       run_loop = platform.EnableSandbox();
 188 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 189     RenderProcessImpl render_process;
 190     RenderThreadImpl::Create(main_message_loop.Pass(),
 191                              renderer_scheduler.Pass());
 192 #endif
 193     base::HighResolutionTimerManager hi_res_timer_manager;
 194
 195     if (run_loop) {
 196 #if defined(OS_MACOSX)
 197       if (pool)
 198         pool->Recycle();
 199 #endif
 200       TRACE_EVENT_BEGIN_ETW("RendererMain.START_MSG_LOOP", 0, 0);
 201       base::MessageLoop::current()->Run();
 202       TRACE_EVENT_END_ETW("RendererMain.START_MSG_LOOP", 0, 0);
 203     }
 204 #if defined(LEAK_SANITIZER)
 205     // Run leak detection before RenderProcessImpl goes out of scope. This helps
 206     // ignore shutdown-only leaks.
 207     __lsan_do_leak_check();
 208 #endif
 209   }
 210   platform.PlatformUninitialize();
 211   TRACE_EVENT_END_ETW("RendererMain", 0, "");
 212   return 0;
 213 }
 214
 215 }  // namespace content