chromecast/browser/cast_browser_main_parts.cc

   1 // Copyright 2014 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 "chromecast/browser/cast_browser_main_parts.h"
   6
   7 #if !defined(OS_ANDROID)
   8 #include <signal.h>
   9 #include <sys/prctl.h>
  10 #endif
  11
  12 #include "base/command_line.h"
  13 #include "base/files/file_util.h"
  14 #include "base/message_loop/message_loop.h"
  15 #include "base/path_service.h"
  16 #include "base/prefs/pref_registry_simple.h"
  17 #include "base/run_loop.h"
  18 #include "cc/base/switches.h"
  19 #include "chromecast/base/cast_paths.h"
  20 #include "chromecast/base/metrics/cast_metrics_helper.h"
  21 #include "chromecast/base/metrics/grouped_histogram.h"
  22 #include "chromecast/browser/cast_browser_context.h"
  23 #include "chromecast/browser/cast_browser_process.h"
  24 #include "chromecast/browser/devtools/remote_debugging_server.h"
  25 #include "chromecast/browser/metrics/cast_metrics_prefs.h"
  26 #include "chromecast/browser/metrics/cast_metrics_service_client.h"
  27 #include "chromecast/browser/pref_service_helper.h"
  28 #include "chromecast/browser/service/cast_service.h"
  29 #include "chromecast/browser/url_request_context_factory.h"
  30 #include "chromecast/common/chromecast_switches.h"
  31 #include "chromecast/common/platform_client_auth.h"
  32 #include "chromecast/net/connectivity_checker.h"
  33 #include "content/public/browser/browser_thread.h"
  34 #include "content/public/common/content_switches.h"
  35 #include "media/base/browser_cdm_factory.h"
  36 #include "media/base/media_switches.h"
  37
  38 #if defined(OS_ANDROID)
  39 #include "chromecast/crash/android/crash_handler.h"
  40 #include "components/crash/browser/crash_dump_manager_android.h"
  41 #include "net/android/network_change_notifier_factory_android.h"
  42 #else
  43 #include "chromecast/browser/media/cast_browser_cdm_factory.h"
  44 #endif
  45
  46 #if defined(USE_AURA)
  47 #include "ui/aura/test/test_screen.h"
  48 #include "ui/gfx/screen.h"
  49 #endif
  50
  51 namespace {
  52
  53 #if !defined(OS_ANDROID)
  54 int kSignalsToRunClosure[] = { SIGTERM, SIGINT, };
  55
  56 // Closure to run on SIGTERM and SIGINT.
  57 base::Closure* g_signal_closure = NULL;
  58
  59 void RunClosureOnSignal(int signum) {
  60   LOG(ERROR) << "Got signal " << signum;
  61   DCHECK(g_signal_closure);
  62   // Expect main thread got this signal. Otherwise, weak_ptr of run_loop will
  63   // crash the process.
  64   g_signal_closure->Run();
  65 }
  66
  67 void RegisterClosureOnSignal(const base::Closure& closure) {
  68   DCHECK(!g_signal_closure);
  69   DCHECK_GT(arraysize(kSignalsToRunClosure), 0U);
  70
  71   // Allow memory leak by intention.
  72   g_signal_closure = new base::Closure(closure);
  73
  74   struct sigaction sa_new;
  75   memset(&sa_new, 0, sizeof(sa_new));
  76   sa_new.sa_handler = RunClosureOnSignal;
  77   sigfillset(&sa_new.sa_mask);
  78   sa_new.sa_flags = SA_RESTART;
  79
  80   for (size_t i = 0; i < arraysize(kSignalsToRunClosure); i++) {
  81     struct sigaction sa_old;
  82     if (sigaction(kSignalsToRunClosure[i], &sa_new, &sa_old) == -1) {
  83       NOTREACHED();
  84     } else {
  85       DCHECK_EQ(sa_old.sa_handler, SIG_DFL);
  86     }
  87   }
  88
  89   // Get the first signal to exit when the parent process dies.
  90   prctl(PR_SET_PDEATHSIG, kSignalsToRunClosure[0]);
  91 }
  92
  93 const int kKillOnAlarmTimeoutSec = 5;  // 5 seconds
  94
  95 void KillOnAlarm(int signum) {
  96   LOG(ERROR) << "Got alarm signal for termination: " << signum;
  97   raise(SIGKILL);
  98 }
  99
 100 void RegisterKillOnAlarm(int timeout_seconds) {
 101   struct sigaction sa_new;
 102   memset(&sa_new, 0, sizeof(sa_new));
 103   sa_new.sa_handler = KillOnAlarm;
 104   sigfillset(&sa_new.sa_mask);
 105   sa_new.sa_flags = SA_RESTART;
 106
 107   struct sigaction sa_old;
 108   if (sigaction(SIGALRM, &sa_new, &sa_old) == -1) {
 109     NOTREACHED();
 110   } else {
 111     DCHECK_EQ(sa_old.sa_handler, SIG_DFL);
 112   }
 113
 114   if (alarm(timeout_seconds) > 0)
 115     NOTREACHED() << "Previous alarm() was cancelled";
 116 }
 117
 118 void DeregisterKillOnAlarm() {
 119   // Explicitly cancel any outstanding alarm() calls.
 120   alarm(0);
 121
 122   struct sigaction sa_new;
 123   memset(&sa_new, 0, sizeof(sa_new));
 124   sa_new.sa_handler = SIG_DFL;
 125   sigfillset(&sa_new.sa_mask);
 126   sa_new.sa_flags = SA_RESTART;
 127
 128   struct sigaction sa_old;
 129   if (sigaction(SIGALRM, &sa_new, &sa_old) == -1) {
 130     NOTREACHED();
 131   } else {
 132     DCHECK_EQ(sa_old.sa_handler, KillOnAlarm);
 133   }
 134 }
 135 #endif  // !defined(OS_ANDROID)
 136
 137 }  // namespace
 138
 139 namespace chromecast {
 140 namespace shell {
 141
 142 namespace {
 143
 144 struct DefaultCommandLineSwitch {
 145   const char* const switch_name;
 146   const char* const switch_value;
 147 };
 148
 149 DefaultCommandLineSwitch g_default_switches[] = {
 150 #if defined(OS_ANDROID)
 151   // Disables Chromecast-specific WiFi-related features on ATV for now.
 152   { switches::kNoWifi, "" },
 153   { switches::kEnableOverlayFullscreenVideo, ""},
 154   { switches::kDisableInfobarForProtectedMediaIdentifier, ""},
 155   { switches::kDisableGestureRequirementForMediaPlayback, ""},
 156 #endif
 157   // Always enable HTMLMediaElement logs.
 158   { switches::kBlinkPlatformLogChannels, "Media"},
 159 #if defined(DISABLE_DISPLAY)
 160   { switches::kDisableGpu, "" },
 161 #endif
 162 #if defined(OS_LINUX)
 163 #if defined(ARCH_CPU_X86_FAMILY)
 164   // This is needed for now to enable the egltest Ozone platform to work with
 165   // current Linux/NVidia OpenGL drivers.
 166   { switches::kIgnoreGpuBlacklist, ""},
 167 #elif defined(ARCH_CPU_ARM_FAMILY) && !defined(DISABLE_DISPLAY)
 168   // On Linux arm, enable CMA pipeline by default.
 169   { switches::kEnableCmaMediaPipeline, "" },
 170 #endif
 171 #endif  // defined(OS_LINUX)
 172   // Needed to fix a bug where the raster thread doesn't get scheduled for a
 173   // substantial time (~5 seconds).  See https://crbug.com/441895.
 174   { switches::kUseNormalPriorityForTileTaskWorkerThreads, "" },
 175   { NULL, NULL },  // Termination
 176 };
 177
 178 void AddDefaultCommandLineSwitches(base::CommandLine* command_line) {
 179   int i = 0;
 180   while (g_default_switches[i].switch_name != NULL) {
 181     command_line->AppendSwitchASCII(
 182         std::string(g_default_switches[i].switch_name),
 183         std::string(g_default_switches[i].switch_value));
 184     ++i;
 185   }
 186 }
 187
 188 }  // namespace
 189
 190 CastBrowserMainParts::CastBrowserMainParts(
 191     const content::MainFunctionParams& parameters,
 192     URLRequestContextFactory* url_request_context_factory)
 193     : BrowserMainParts(),
 194       cast_browser_process_(new CastBrowserProcess()),
 195       parameters_(parameters),
 196       url_request_context_factory_(url_request_context_factory) {
 197   base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
 198   AddDefaultCommandLineSwitches(command_line);
 199 }
 200
 201 CastBrowserMainParts::~CastBrowserMainParts() {
 202 }
 203
 204 void CastBrowserMainParts::PreMainMessageLoopStart() {
 205   // GroupedHistograms needs to be initialized before any threads are created
 206   // to prevent race conditions between calls to Preregister and those threads
 207   // attempting to collect metrics.
 208   // This call must also be before NetworkChangeNotifier, as it generates
 209   // Net/DNS metrics.
 210   metrics::PreregisterAllGroupedHistograms();
 211
 212 #if defined(OS_ANDROID)
 213   net::NetworkChangeNotifier::SetFactory(
 214       new net::NetworkChangeNotifierFactoryAndroid());
 215 #endif  // defined(OS_ANDROID)
 216 }
 217
 218 void CastBrowserMainParts::PostMainMessageLoopStart() {
 219   cast_browser_process_->SetMetricsHelper(make_scoped_ptr(
 220       new metrics::CastMetricsHelper(base::MessageLoopProxy::current())));
 221
 222 #if defined(OS_ANDROID)
 223   base::MessageLoopForUI::current()->Start();
 224 #endif  // defined(OS_ANDROID)
 225 }
 226
 227 int CastBrowserMainParts::PreCreateThreads() {
 228 #if defined(OS_ANDROID)
 229   // GPU process is started immediately after threads are created, requiring
 230   // CrashDumpManager to be initialized beforehand.
 231   base::FilePath crash_dumps_dir;
 232   if (!chromecast::CrashHandler::GetCrashDumpLocation(&crash_dumps_dir)) {
 233     LOG(ERROR) << "Could not find crash dump location.";
 234   }
 235   cast_browser_process_->SetCrashDumpManager(
 236       make_scoped_ptr(new breakpad::CrashDumpManager(crash_dumps_dir)));
 237 #else
 238   base::FilePath home_dir;
 239   CHECK(PathService::Get(DIR_CAST_HOME, &home_dir));
 240   if (!base::CreateDirectory(home_dir))
 241     return 1;
 242 #endif
 243
 244 #if defined(USE_AURA)
 245   // Screen can (and should) exist even with no displays connected. Its presence
 246   // is assumed as an interface to access display information, e.g. from metrics
 247   // code.  See CastContentWindow::CreateWindowTree for update when resolution
 248   // is available.
 249   DCHECK(!gfx::Screen::GetScreenByType(gfx::SCREEN_TYPE_NATIVE));
 250   gfx::Screen::SetScreenInstance(gfx::SCREEN_TYPE_NATIVE,
 251                                  aura::TestScreen::Create(gfx::Size(0, 0)));
 252 #endif
 253   return 0;
 254 }
 255
 256 void CastBrowserMainParts::PreMainMessageLoopRun() {
 257   scoped_refptr<PrefRegistrySimple> pref_registry(new PrefRegistrySimple());
 258   metrics::RegisterPrefs(pref_registry.get());
 259   cast_browser_process_->SetPrefService(
 260       PrefServiceHelper::CreatePrefService(pref_registry.get()));
 261
 262 #if !defined(OS_ANDROID)
 263   const base::CommandLine* cmd_line = base::CommandLine::ForCurrentProcess();
 264   if (cmd_line->HasSwitch(switches::kEnableCmaMediaPipeline))
 265     ::media::SetBrowserCdmFactory(new media::CastBrowserCdmFactory);
 266 #endif  // !defined(OS_ANDROID)
 267
 268   cast_browser_process_->SetConnectivityChecker(
 269       make_scoped_refptr(new ConnectivityChecker(
 270           content::BrowserThread::GetMessageLoopProxyForThread(
 271               content::BrowserThread::IO))));
 272
 273   url_request_context_factory_->InitializeOnUIThread();
 274
 275   cast_browser_process_->SetBrowserContext(
 276       make_scoped_ptr(new CastBrowserContext(url_request_context_factory_)));
 277   cast_browser_process_->SetMetricsServiceClient(
 278       metrics::CastMetricsServiceClient::Create(
 279           content::BrowserThread::GetBlockingPool(),
 280           cast_browser_process_->pref_service(),
 281           cast_browser_process_->browser_context()->GetRequestContext()));
 282
 283   if (!PlatformClientAuth::Initialize())
 284     LOG(ERROR) << "PlatformClientAuth::Initialize failed.";
 285
 286   cast_browser_process_->SetRemoteDebuggingServer(
 287       make_scoped_ptr(new RemoteDebuggingServer()));
 288
 289   cast_browser_process_->SetCastService(CastService::Create(
 290       cast_browser_process_->browser_context(),
 291       cast_browser_process_->pref_service(),
 292       cast_browser_process_->metrics_service_client(),
 293       url_request_context_factory_->GetSystemGetter()));
 294   cast_browser_process_->cast_service()->Initialize();
 295
 296   // Initializing metrics service and network delegates must happen after cast
 297   // service is intialized because CastMetricsServiceClient and
 298   // CastNetworkDelegate may use components initialized by cast service.
 299   cast_browser_process_->metrics_service_client()
 300       ->Initialize(cast_browser_process_->cast_service());
 301   url_request_context_factory_->InitializeNetworkDelegates();
 302
 303   cast_browser_process_->cast_service()->Start();
 304 }
 305
 306 bool CastBrowserMainParts::MainMessageLoopRun(int* result_code) {
 307 #if defined(OS_ANDROID)
 308   // Android does not use native main MessageLoop.
 309   NOTREACHED();
 310   return true;
 311 #else
 312   base::RunLoop run_loop;
 313   base::Closure quit_closure(run_loop.QuitClosure());
 314   RegisterClosureOnSignal(quit_closure);
 315
 316   // If parameters_.ui_task is not NULL, we are running browser tests.
 317   if (parameters_.ui_task) {
 318     base::MessageLoop* message_loop = base::MessageLoopForUI::current();
 319     message_loop->PostTask(FROM_HERE, *parameters_.ui_task);
 320     message_loop->PostTask(FROM_HERE, quit_closure);
 321   }
 322
 323   run_loop.Run();
 324
 325   // Once the main loop has stopped running, we give the browser process a few
 326   // seconds to stop cast service and finalize all resources. If a hang occurs
 327   // and cast services refuse to terminate successfully, then we SIGKILL the
 328   // current process to avoid indefinte hangs.
 329   RegisterKillOnAlarm(kKillOnAlarmTimeoutSec);
 330
 331   cast_browser_process_->cast_service()->Stop();
 332   return true;
 333 #endif
 334 }
 335
 336 void CastBrowserMainParts::PostMainMessageLoopRun() {
 337 #if defined(OS_ANDROID)
 338   // Android does not use native main MessageLoop.
 339   NOTREACHED();
 340 #else
 341   cast_browser_process_->cast_service()->Finalize();
 342   cast_browser_process_->metrics_service_client()->Finalize();
 343   cast_browser_process_.reset();
 344   DeregisterKillOnAlarm();
 345 #endif
 346 }
 347
 348 }  // namespace shell
 349 }  // namespace chromecast