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/debug/stack_trace.h"
  10 #include "base/i18n/rtl.h"
  11 #include "base/message_loop/message_loop.h"
  12 #include "base/metrics/field_trial.h"
  13 #include "base/metrics/histogram.h"
  14 #include "base/metrics/statistics_recorder.h"
  15 #include "base/pending_task.h"
  16 #include "base/strings/string_util.h"
  17 #include "base/sys_info.h"
  18 #include "base/threading/platform_thread.h"
  19 #include "base/timer/hi_res_timer_manager.h"
  20 #include "base/trace_event/trace_event.h"
  21 #include "components/scheduler/renderer/renderer_scheduler.h"
  22 #include "content/child/child_process.h"
  23 #include "content/common/content_constants_internal.h"
  24 #include "content/public/common/content_switches.h"
  25 #include "content/public/common/main_function_params.h"
  26 #include "content/public/renderer/content_renderer_client.h"
  27 #include "content/renderer/render_process_impl.h"
  28 #include "content/renderer/render_thread_impl.h"
  29 #include "content/renderer/renderer_main_platform_delegate.h"
  30 #include "third_party/skia/include/core/SkGraphics.h"
  31 #include "ui/base/ui_base_switches.h"
  32
  33 #if defined(OS_ANDROID)
  34 #include "base/android/library_loader/library_loader_hooks.h"
  35 #endif  // OS_ANDROID
  36
  37 #if defined(OS_MACOSX)
  38 #include <Carbon/Carbon.h>
  39 #include <signal.h>
  40 #include <unistd.h>
  41
  42 #include "base/mac/scoped_nsautorelease_pool.h"
  43 #include "base/message_loop/message_pump_mac.h"
  44 #include "third_party/WebKit/public/web/WebView.h"
  45 #endif  // OS_MACOSX
  46
  47 #if defined(ENABLE_PLUGINS)
  48 #include "content/renderer/pepper/pepper_plugin_registry.h"
  49 #endif
  50
  51 #if defined(ENABLE_WEBRTC)
  52 #include "third_party/libjingle/overrides/init_webrtc.h"
  53 #endif
  54
  55 #if defined(USE_OZONE)
  56 #include "ui/ozone/public/client_native_pixmap_factory.h"
  57 #endif
  58
  59 namespace content {
  60 namespace {
  61 // This function provides some ways to test crash and assertion handling
  62 // behavior of the renderer.
  63 static void HandleRendererErrorTestParameters(
  64     const base::CommandLine& command_line) {
  65   if (command_line.HasSwitch(switches::kWaitForDebugger))
  66     base::debug::WaitForDebugger(60, true);
  67
  68   if (command_line.HasSwitch(switches::kRendererStartupDialog))
  69     ChildProcess::WaitForDebugger("Renderer");
  70 }
  71
  72 #if defined(USE_OZONE)
  73 base::LazyInstance<scoped_ptr<ui::ClientNativePixmapFactory>> g_pixmap_factory =
  74     LAZY_INSTANCE_INITIALIZER;
  75 #endif
  76
  77 }  // namespace
  78
  79 // mainline routine for running as the Renderer process
  80 int RendererMain(const MainFunctionParams& parameters) {
  81   TRACE_EVENT_BEGIN_ETW("RendererMain", 0, "");
  82   base::trace_event::TraceLog::GetInstance()->SetProcessName("Renderer");
  83   base::trace_event::TraceLog::GetInstance()->SetProcessSortIndex(
  84       kTraceEventRendererProcessSortIndex);
  85
  86   const base::CommandLine& parsed_command_line = parameters.command_line;
  87
  88 #if defined(OS_MACOSX)
  89   base::mac::ScopedNSAutoreleasePool* pool = parameters.autorelease_pool;
  90 #endif  // OS_MACOSX
  91
  92 #if defined(OS_CHROMEOS)
  93   // As Zygote process starts up earlier than browser process gets its own
  94   // locale (at login time for Chrome OS), we have to set the ICU default
  95   // locale for renderer process here.
  96   // ICU locale will be used for fallback font selection etc.
  97   if (parsed_command_line.HasSwitch(switches::kLang)) {
  98     const std::string locale =
  99         parsed_command_line.GetSwitchValueASCII(switches::kLang);
 100     base::i18n::SetICUDefaultLocale(locale);
 101   }
 102 #endif
 103
 104   SkGraphics::Init();
 105 #if defined(OS_ANDROID)
 106   const int kMB = 1024 * 1024;
 107   size_t font_cache_limit =
 108       base::SysInfo::IsLowEndDevice() ? kMB : 8 * kMB;
 109   SkGraphics::SetFontCacheLimit(font_cache_limit);
 110 #endif
 111
 112 #if defined(USE_OZONE)
 113   g_pixmap_factory.Get() = ui::ClientNativePixmapFactory::Create();
 114   ui::ClientNativePixmapFactory::SetInstance(g_pixmap_factory.Get().get());
 115 #endif
 116
 117   // This function allows pausing execution using the --renderer-startup-dialog
 118   // flag allowing us to attach a debugger.
 119   // Do not move this function down since that would mean we can't easily debug
 120   // whatever occurs before it.
 121   HandleRendererErrorTestParameters(parsed_command_line);
 122
 123   RendererMainPlatformDelegate platform(parameters);
 124 #if defined(OS_MACOSX)
 125   // As long as scrollbars on Mac are painted with Cocoa, the message pump
 126   // needs to be backed by a Foundation-level loop to process NSTimers. See
 127   // http://crbug.com/306348#c24 for details.
 128   scoped_ptr<base::MessagePump> pump(new base::MessagePumpNSRunLoop());
 129   scoped_ptr<base::MessageLoop> main_message_loop(
 130       new base::MessageLoop(pump.Pass()));
 131 #else
 132   // The main message loop of the renderer services doesn't have IO or UI tasks.
 133   scoped_ptr<base::MessageLoop> main_message_loop(new base::MessageLoop());
 134 #endif
 135
 136   base::PlatformThread::SetName("CrRendererMain");
 137   scoped_ptr<scheduler::RendererScheduler> renderer_scheduler(
 138       scheduler::RendererScheduler::Create());
 139
 140   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);
 141
 142   // Initialize histogram statistics gathering system.
 143   base::StatisticsRecorder::Initialize();
 144
 145 #if defined(OS_ANDROID)
 146   // If we have a pending chromium android linker histogram, record it.
 147   base::android::RecordChromiumAndroidLinkerRendererHistogram();
 148 #endif
 149
 150   // Initialize statistical testing infrastructure.  We set the entropy provider
 151   // to NULL to disallow the renderer process from creating its own one-time
 152   // randomized trials; they should be created in the browser process.
 153   base::FieldTrialList field_trial_list(NULL);
 154   // Ensure any field trials in browser are reflected into renderer.
 155   if (parsed_command_line.HasSwitch(switches::kForceFieldTrials)) {
 156     bool result = base::FieldTrialList::CreateTrialsFromString(
 157         parsed_command_line.GetSwitchValueASCII(switches::kForceFieldTrials),
 158         base::FieldTrialList::DONT_ACTIVATE_TRIALS,
 159         std::set<std::string>());
 160     DCHECK(result);
 161   }
 162
 163   // PlatformInitialize uses FieldTrials, so this must happen later.
 164   platform.PlatformInitialize();
 165
 166 #if defined(ENABLE_PLUGINS)
 167   // Load pepper plugins before engaging the sandbox.
 168   PepperPluginRegistry::GetInstance();
 169 #endif
 170 #if defined(ENABLE_WEBRTC)
 171   // Initialize WebRTC before engaging the sandbox.
 172   // NOTE: On linux, this call could already have been made from
 173   // zygote_main_linux.cc.  However, calling multiple times from the same thread
 174   // is OK.
 175   InitializeWebRtcModule();
 176 #endif
 177
 178   {
 179 #if defined(OS_WIN) || defined(OS_MACOSX)
 180     // TODO(markus): Check if it is OK to unconditionally move this
 181     // instruction down.
 182     RenderProcessImpl render_process;
 183     RenderThreadImpl::Create(main_message_loop.Pass(),
 184                              renderer_scheduler.Pass());
 185 #endif
 186     bool run_loop = true;
 187     if (!no_sandbox) {
 188       run_loop = platform.EnableSandbox();
 189     } else {
 190       LOG(ERROR) << "Running without renderer sandbox";
 191 #if !defined(NDEBUG) || (defined(CFI_ENFORCEMENT) && !defined(OFFICIAL_BUILD))
 192       // For convenience, we print the stack traces for crashes.  When sandbox
 193       // is enabled, the in-process stack dumping is enabled as part of the
 194       // EnableSandbox() call.
 195       base::debug::EnableInProcessStackDumping();
 196 #endif
 197     }
 198 #if defined(OS_POSIX) && !defined(OS_MACOSX)
 199     RenderProcessImpl render_process;
 200     RenderThreadImpl::Create(main_message_loop.Pass(),
 201                              renderer_scheduler.Pass());
 202 #endif
 203     base::HighResolutionTimerManager hi_res_timer_manager;
 204
 205     if (run_loop) {
 206 #if defined(OS_MACOSX)
 207       if (pool)
 208         pool->Recycle();
 209 #endif
 210       TRACE_EVENT_BEGIN_ETW("RendererMain.START_MSG_LOOP", 0, 0);
 211       base::MessageLoop::current()->Run();
 212       TRACE_EVENT_END_ETW("RendererMain.START_MSG_LOOP", 0, 0);
 213     }
 214 #if defined(LEAK_SANITIZER)
 215     // Run leak detection before RenderProcessImpl goes out of scope. This helps
 216     // ignore shutdown-only leaks.
 217     __lsan_do_leak_check();
 218 #endif
 219   }
 220   platform.PlatformUninitialize();
 221   TRACE_EVENT_END_ETW("RendererMain", 0, "");
 222   return 0;
 223 }
 224
 225 }  // namespace content