content/app/content_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/app/content_main_runner.h"
   6
   7 #include <stdlib.h>
   8
   9 #include "base/allocator/allocator_extension.h"
  10 #include "base/at_exit.h"
  11 #include "base/command_line.h"
  12 #include "base/debug/debugger.h"
  13 #include "base/debug/trace_event.h"
  14 #include "base/files/file_path.h"
  15 #include "base/i18n/icu_util.h"
  16 #include "base/lazy_instance.h"
  17 #include "base/logging.h"
  18 #include "base/memory/scoped_ptr.h"
  19 #include "base/memory/scoped_vector.h"
  20 #include "base/metrics/stats_table.h"
  21 #include "base/path_service.h"
  22 #include "base/process/launch.h"
  23 #include "base/process/memory.h"
  24 #include "base/process/process_handle.h"
  25 #include "base/profiler/alternate_timer.h"
  26 #include "base/strings/string_number_conversions.h"
  27 #include "base/strings/string_util.h"
  28 #include "base/strings/stringprintf.h"
  29 #include "content/browser/browser_main.h"
  30 #include "content/common/set_process_title.h"
  31 #include "content/common/url_schemes.h"
  32 #include "content/gpu/in_process_gpu_thread.h"
  33 #include "content/public/app/content_main.h"
  34 #include "content/public/app/content_main_delegate.h"
  35 #include "content/public/app/startup_helper_win.h"
  36 #include "content/public/browser/content_browser_client.h"
  37 #include "content/public/common/content_client.h"
  38 #include "content/public/common/content_constants.h"
  39 #include "content/public/common/content_paths.h"
  40 #include "content/public/common/content_switches.h"
  41 #include "content/public/common/main_function_params.h"
  42 #include "content/public/common/sandbox_init.h"
  43 #include "content/renderer/in_process_renderer_thread.h"
  44 #include "content/utility/in_process_utility_thread.h"
  45 #include "crypto/nss_util.h"
  46 #include "ipc/ipc_descriptors.h"
  47 #include "ipc/ipc_switches.h"
  48 #include "media/base/media.h"
  49 #include "sandbox/win/src/sandbox_types.h"
  50 #include "ui/base/ui_base_paths.h"
  51 #include "ui/base/ui_base_switches.h"
  52
  53 #if defined(OS_ANDROID)
  54 #include "content/public/common/content_descriptors.h"
  55 #endif
  56
  57 #if defined(USE_TCMALLOC)
  58 #include "third_party/tcmalloc/chromium/src/gperftools/malloc_extension.h"
  59 #if defined(TYPE_PROFILING)
  60 #include "base/allocator/type_profiler.h"
  61 #include "base/allocator/type_profiler_tcmalloc.h"
  62 #endif
  63 #endif
  64
  65 #if !defined(OS_IOS)
  66 #include "content/app/mojo/mojo_init.h"
  67 #include "content/browser/gpu/gpu_process_host.h"
  68 #include "content/browser/renderer_host/render_process_host_impl.h"
  69 #include "content/browser/utility_process_host_impl.h"
  70 #include "content/public/plugin/content_plugin_client.h"
  71 #include "content/public/renderer/content_renderer_client.h"
  72 #include "content/public/utility/content_utility_client.h"
  73 #endif
  74
  75 #if defined(OS_WIN)
  76 #include <malloc.h>
  77 #include <cstring>
  78
  79 #include "base/strings/string_number_conversions.h"
  80 #include "ui/base/win/atl_module.h"
  81 #include "ui/base/win/dpi_setup.h"
  82 #include "ui/gfx/win/dpi.h"
  83 #elif defined(OS_MACOSX)
  84 #include "base/mac/scoped_nsautorelease_pool.h"
  85 #if !defined(OS_IOS)
  86 #include "base/power_monitor/power_monitor_device_source.h"
  87 #include "content/browser/mach_broker_mac.h"
  88 #include "content/common/sandbox_init_mac.h"
  89 #endif  // !OS_IOS
  90 #endif  // OS_WIN
  91
  92 #if defined(OS_POSIX)
  93 #include <signal.h>
  94
  95 #include "base/posix/global_descriptors.h"
  96 #include "content/public/common/content_descriptors.h"
  97
  98 #if !defined(OS_MACOSX)
  99 #include "content/public/common/zygote_fork_delegate_linux.h"
 100 #endif
 101 #if !defined(OS_MACOSX) && !defined(OS_ANDROID)
 102 #include "content/zygote/zygote_main.h"
 103 #endif
 104
 105 #endif  // OS_POSIX
 106
 107 #if !defined(OS_MACOSX) && defined(USE_TCMALLOC)
 108 extern "C" {
 109 int tc_set_new_mode(int mode);
 110 }
 111 #endif
 112
 113 namespace content {
 114 extern int GpuMain(const content::MainFunctionParams&);
 115 #if defined(ENABLE_PLUGINS)
 116 #if !defined(OS_LINUX)
 117 extern int PluginMain(const content::MainFunctionParams&);
 118 #endif
 119 extern int PpapiPluginMain(const MainFunctionParams&);
 120 extern int PpapiBrokerMain(const MainFunctionParams&);
 121 #endif
 122 extern int RendererMain(const content::MainFunctionParams&);
 123 extern int UtilityMain(const MainFunctionParams&);
 124 }  // namespace content
 125
 126 namespace content {
 127
 128 #if !defined(CHROME_MULTIPLE_DLL_CHILD)
 129 base::LazyInstance<ContentBrowserClient>
 130     g_empty_content_browser_client = LAZY_INSTANCE_INITIALIZER;
 131 #endif  //  !CHROME_MULTIPLE_DLL_CHILD
 132
 133 #if !defined(OS_IOS) && !defined(CHROME_MULTIPLE_DLL_BROWSER)
 134 base::LazyInstance<ContentPluginClient>
 135     g_empty_content_plugin_client = LAZY_INSTANCE_INITIALIZER;
 136 base::LazyInstance<ContentRendererClient>
 137     g_empty_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
 138 base::LazyInstance<ContentUtilityClient>
 139     g_empty_content_utility_client = LAZY_INSTANCE_INITIALIZER;
 140 #endif  // !OS_IOS && !CHROME_MULTIPLE_DLL_BROWSER
 141
 142 #if defined(OS_WIN)
 143
 144 #endif  // defined(OS_WIN)
 145
 146 #if defined(OS_POSIX) && !defined(OS_IOS)
 147
 148 // Setup signal-handling state: resanitize most signals, ignore SIGPIPE.
 149 void SetupSignalHandlers() {
 150   // Sanitise our signal handling state. Signals that were ignored by our
 151   // parent will also be ignored by us. We also inherit our parent's sigmask.
 152   sigset_t empty_signal_set;
 153   CHECK(0 == sigemptyset(&empty_signal_set));
 154   CHECK(0 == sigprocmask(SIG_SETMASK, &empty_signal_set, NULL));
 155
 156   struct sigaction sigact;
 157   memset(&sigact, 0, sizeof(sigact));
 158   sigact.sa_handler = SIG_DFL;
 159   static const int signals_to_reset[] =
 160       {SIGHUP, SIGINT, SIGQUIT, SIGILL, SIGABRT, SIGFPE, SIGSEGV,
 161        SIGALRM, SIGTERM, SIGCHLD, SIGBUS, SIGTRAP};  // SIGPIPE is set below.
 162   for (unsigned i = 0; i < arraysize(signals_to_reset); i++) {
 163     CHECK(0 == sigaction(signals_to_reset[i], &sigact, NULL));
 164   }
 165
 166   // Always ignore SIGPIPE.  We check the return value of write().
 167   CHECK(signal(SIGPIPE, SIG_IGN) != SIG_ERR);
 168 }
 169
 170 #endif  // OS_POSIX && !OS_IOS
 171
 172 void CommonSubprocessInit(const std::string& process_type) {
 173 #if defined(OS_WIN)
 174   // HACK: Let Windows know that we have started.  This is needed to suppress
 175   // the IDC_APPSTARTING cursor from being displayed for a prolonged period
 176   // while a subprocess is starting.
 177   PostThreadMessage(GetCurrentThreadId(), WM_NULL, 0, 0);
 178   MSG msg;
 179   PeekMessage(&msg, NULL, 0, 0, PM_REMOVE);
 180 #endif
 181 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 182   // Various things break when you're using a locale where the decimal
 183   // separator isn't a period.  See e.g. bugs 22782 and 39964.  For
 184   // all processes except the browser process (where we call system
 185   // APIs that may rely on the correct locale for formatting numbers
 186   // when presenting them to the user), reset the locale for numeric
 187   // formatting.
 188   // Note that this is not correct for plugin processes -- they can
 189   // surface UI -- but it's likely they get this wrong too so why not.
 190   setlocale(LC_NUMERIC, "C");
 191 #endif
 192 }
 193
 194 // Only needed on Windows for creating stats tables.
 195 #if defined(OS_WIN)
 196 static base::ProcessId GetBrowserPid(const base::CommandLine& command_line) {
 197   base::ProcessId browser_pid = base::GetCurrentProcId();
 198   if (command_line.HasSwitch(switches::kProcessChannelID)) {
 199     std::string channel_name =
 200         command_line.GetSwitchValueASCII(switches::kProcessChannelID);
 201
 202     int browser_pid_int;
 203     base::StringToInt(channel_name, &browser_pid_int);
 204     browser_pid = static_cast<base::ProcessId>(browser_pid_int);
 205     DCHECK_NE(browser_pid_int, 0);
 206   }
 207   return browser_pid;
 208 }
 209 #endif
 210
 211 static void InitializeStatsTable(const base::CommandLine& command_line) {
 212   // Initialize the Stats Counters table.  With this initialized,
 213   // the StatsViewer can be utilized to read counters outside of
 214   // Chrome.  These lines can be commented out to effectively turn
 215   // counters 'off'.  The table is created and exists for the life
 216   // of the process.  It is not cleaned up.
 217   if (command_line.HasSwitch(switches::kEnableStatsTable)) {
 218     // NOTIMPLEMENTED: we probably need to shut this down correctly to avoid
 219     // leaking shared memory regions on posix platforms.
 220 #if defined(OS_POSIX)
 221     // Stats table is in the global file descriptors table on Posix.
 222     base::GlobalDescriptors* global_descriptors =
 223         base::GlobalDescriptors::GetInstance();
 224     base::FileDescriptor table_ident;
 225     if (global_descriptors->MaybeGet(kStatsTableSharedMemFd) != -1) {
 226       // Open the shared memory file descriptor passed by the browser process.
 227       table_ident = base::FileDescriptor(
 228           global_descriptors->Get(kStatsTableSharedMemFd), false);
 229     }
 230 #elif defined(OS_WIN)
 231     // Stats table is in a named segment on Windows. Use the PID to make this
 232     // unique on the system.
 233     std::string table_ident =
 234       base::StringPrintf("%s-%u", kStatsFilename,
 235           static_cast<unsigned int>(GetBrowserPid(command_line)));
 236 #endif
 237     base::StatsTable* stats_table =
 238         new base::StatsTable(table_ident, kStatsMaxThreads, kStatsMaxCounters);
 239     base::StatsTable::set_current(stats_table);
 240   }
 241 }
 242
 243 class ContentClientInitializer {
 244  public:
 245   static void Set(const std::string& process_type,
 246                   ContentMainDelegate* delegate) {
 247     ContentClient* content_client = GetContentClient();
 248 #if !defined(CHROME_MULTIPLE_DLL_CHILD)
 249     if (process_type.empty()) {
 250       if (delegate)
 251         content_client->browser_ = delegate->CreateContentBrowserClient();
 252       if (!content_client->browser_)
 253         content_client->browser_ = &g_empty_content_browser_client.Get();
 254     }
 255 #endif  // !CHROME_MULTIPLE_DLL_CHILD
 256
 257 #if !defined(OS_IOS) && !defined(CHROME_MULTIPLE_DLL_BROWSER)
 258     if (process_type == switches::kPluginProcess ||
 259         process_type == switches::kPpapiPluginProcess) {
 260       if (delegate)
 261         content_client->plugin_ = delegate->CreateContentPluginClient();
 262       if (!content_client->plugin_)
 263         content_client->plugin_ = &g_empty_content_plugin_client.Get();
 264       // Single process not supported in split dll mode.
 265     } else if (process_type == switches::kRendererProcess ||
 266                base::CommandLine::ForCurrentProcess()->HasSwitch(
 267                    switches::kSingleProcess)) {
 268       if (delegate)
 269         content_client->renderer_ = delegate->CreateContentRendererClient();
 270       if (!content_client->renderer_)
 271         content_client->renderer_ = &g_empty_content_renderer_client.Get();
 272     }
 273
 274     if (process_type == switches::kUtilityProcess ||
 275         base::CommandLine::ForCurrentProcess()->HasSwitch(
 276             switches::kSingleProcess)) {
 277       if (delegate)
 278         content_client->utility_ = delegate->CreateContentUtilityClient();
 279       // TODO(scottmg): http://crbug.com/237249 Should be in _child.
 280       if (!content_client->utility_)
 281         content_client->utility_ = &g_empty_content_utility_client.Get();
 282     }
 283 #endif  // !OS_IOS && !CHROME_MULTIPLE_DLL_BROWSER
 284   }
 285 };
 286
 287 // We dispatch to a process-type-specific FooMain() based on a command-line
 288 // flag.  This struct is used to build a table of (flag, main function) pairs.
 289 struct MainFunction {
 290   const char* name;
 291   int (*function)(const MainFunctionParams&);
 292 };
 293
 294 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 295 // On platforms that use the zygote, we have a special subset of
 296 // subprocesses that are launched via the zygote.  This function
 297 // fills in some process-launching bits around ZygoteMain().
 298 // Returns the exit code of the subprocess.
 299 int RunZygote(const MainFunctionParams& main_function_params,
 300               ContentMainDelegate* delegate) {
 301   static const MainFunction kMainFunctions[] = {
 302     { switches::kRendererProcess,    RendererMain },
 303 #if defined(ENABLE_PLUGINS)
 304     { switches::kPpapiPluginProcess, PpapiPluginMain },
 305 #endif
 306     { switches::kUtilityProcess,     UtilityMain },
 307   };
 308
 309   ScopedVector<ZygoteForkDelegate> zygote_fork_delegates;
 310   if (delegate) {
 311     delegate->ZygoteStarting(&zygote_fork_delegates);
 312     // Each Renderer we spawn will re-attempt initialization of the media
 313     // libraries, at which point failure will be detected and handled, so
 314     // we do not need to cope with initialization failures here.
 315     base::FilePath media_path;
 316     if (PathService::Get(DIR_MEDIA_LIBS, &media_path))
 317       media::InitializeMediaLibrary(media_path);
 318   }
 319
 320   // This function call can return multiple times, once per fork().
 321   if (!ZygoteMain(main_function_params, zygote_fork_delegates.Pass()))
 322     return 1;
 323
 324   if (delegate) delegate->ZygoteForked();
 325
 326   // Zygote::HandleForkRequest may have reallocated the command
 327   // line so update it here with the new version.
 328   const base::CommandLine& command_line =
 329       *base::CommandLine::ForCurrentProcess();
 330   std::string process_type =
 331       command_line.GetSwitchValueASCII(switches::kProcessType);
 332   ContentClientInitializer::Set(process_type, delegate);
 333
 334   // The StatsTable must be initialized in each process; we already
 335   // initialized for the browser process, now we need to initialize
 336   // within the new processes as well.
 337   InitializeStatsTable(command_line);
 338
 339   MainFunctionParams main_params(command_line);
 340   main_params.zygote_child = true;
 341
 342   for (size_t i = 0; i < arraysize(kMainFunctions); ++i) {
 343     if (process_type == kMainFunctions[i].name)
 344       return kMainFunctions[i].function(main_params);
 345   }
 346
 347   if (delegate)
 348     return delegate->RunProcess(process_type, main_params);
 349
 350   NOTREACHED() << "Unknown zygote process type: " << process_type;
 351   return 1;
 352 }
 353 #endif  // defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 354
 355 #if !defined(OS_IOS)
 356 static void RegisterMainThreadFactories() {
 357 #if !defined(CHROME_MULTIPLE_DLL_BROWSER) && !defined(CHROME_MULTIPLE_DLL_CHILD)
 358   UtilityProcessHostImpl::RegisterUtilityMainThreadFactory(
 359       CreateInProcessUtilityThread);
 360   RenderProcessHostImpl::RegisterRendererMainThreadFactory(
 361       CreateInProcessRendererThread);
 362   GpuProcessHost::RegisterGpuMainThreadFactory(
 363       CreateInProcessGpuThread);
 364 #else
 365   base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
 366   if (command_line.HasSwitch(switches::kSingleProcess)) {
 367     LOG(FATAL) <<
 368         "--single-process is not supported in chrome multiple dll browser.";
 369   }
 370   if (command_line.HasSwitch(switches::kInProcessGPU)) {
 371     LOG(FATAL) <<
 372         "--in-process-gpu is not supported in chrome multiple dll browser.";
 373   }
 374 #endif  // !CHROME_MULTIPLE_DLL_BROWSER && !CHROME_MULTIPLE_DLL_CHILD
 375 }
 376
 377 // Run the FooMain() for a given process type.
 378 // If |process_type| is empty, runs BrowserMain().
 379 // Returns the exit code for this process.
 380 int RunNamedProcessTypeMain(
 381     const std::string& process_type,
 382     const MainFunctionParams& main_function_params,
 383     ContentMainDelegate* delegate) {
 384   static const MainFunction kMainFunctions[] = {
 385 #if !defined(CHROME_MULTIPLE_DLL_CHILD)
 386     { "",                            BrowserMain },
 387 #endif
 388 #if !defined(CHROME_MULTIPLE_DLL_BROWSER)
 389 #if defined(ENABLE_PLUGINS)
 390 #if !defined(OS_LINUX)
 391     { switches::kPluginProcess,      PluginMain },
 392 #endif
 393     { switches::kPpapiPluginProcess, PpapiPluginMain },
 394     { switches::kPpapiBrokerProcess, PpapiBrokerMain },
 395 #endif  // ENABLE_PLUGINS
 396     { switches::kUtilityProcess,     UtilityMain },
 397     { switches::kRendererProcess,    RendererMain },
 398     { switches::kGpuProcess,         GpuMain },
 399 #endif  // !CHROME_MULTIPLE_DLL_BROWSER
 400   };
 401
 402   RegisterMainThreadFactories();
 403
 404   for (size_t i = 0; i < arraysize(kMainFunctions); ++i) {
 405     if (process_type == kMainFunctions[i].name) {
 406       if (delegate) {
 407         int exit_code = delegate->RunProcess(process_type,
 408             main_function_params);
 409 #if defined(OS_ANDROID)
 410         // In Android's browser process, the negative exit code doesn't mean the
 411         // default behavior should be used as the UI message loop is managed by
 412         // the Java and the browser process's default behavior is always
 413         // overridden.
 414         if (process_type.empty())
 415           return exit_code;
 416 #endif
 417         if (exit_code >= 0)
 418           return exit_code;
 419       }
 420       return kMainFunctions[i].function(main_function_params);
 421     }
 422   }
 423
 424 #if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID)
 425   // Zygote startup is special -- see RunZygote comments above
 426   // for why we don't use ZygoteMain directly.
 427   if (process_type == switches::kZygoteProcess)
 428     return RunZygote(main_function_params, delegate);
 429 #endif
 430
 431   // If it's a process we don't know about, the embedder should know.
 432   if (delegate)
 433     return delegate->RunProcess(process_type, main_function_params);
 434
 435   NOTREACHED() << "Unknown process type: " << process_type;
 436   return 1;
 437 }
 438 #endif  // !OS_IOS
 439
 440 class ContentMainRunnerImpl : public ContentMainRunner {
 441  public:
 442   ContentMainRunnerImpl()
 443       : is_initialized_(false),
 444         is_shutdown_(false),
 445         completed_basic_startup_(false),
 446         delegate_(NULL),
 447         ui_task_(NULL) {
 448 #if defined(OS_WIN)
 449     memset(&sandbox_info_, 0, sizeof(sandbox_info_));
 450 #endif
 451   }
 452
 453   virtual ~ContentMainRunnerImpl() {
 454     if (is_initialized_ && !is_shutdown_)
 455       Shutdown();
 456   }
 457
 458 #if defined(USE_TCMALLOC)
 459   static bool GetAllocatorWasteSizeThunk(size_t* size) {
 460     size_t heap_size, allocated_bytes, unmapped_bytes;
 461     MallocExtension* ext = MallocExtension::instance();
 462     if (ext->GetNumericProperty("generic.heap_size", &heap_size) &&
 463         ext->GetNumericProperty("generic.current_allocated_bytes",
 464                                 &allocated_bytes) &&
 465         ext->GetNumericProperty("tcmalloc.pageheap_unmapped_bytes",
 466                                 &unmapped_bytes)) {
 467       *size = heap_size - allocated_bytes - unmapped_bytes;
 468       return true;
 469     }
 470     DCHECK(false);
 471     return false;
 472   }
 473
 474   static void GetStatsThunk(char* buffer, int buffer_length) {
 475     MallocExtension::instance()->GetStats(buffer, buffer_length);
 476   }
 477
 478   static void ReleaseFreeMemoryThunk() {
 479     MallocExtension::instance()->ReleaseFreeMemory();
 480   }
 481 #endif
 482
 483   virtual int Initialize(const ContentMainParams& params) OVERRIDE {
 484     ui_task_ = params.ui_task;
 485
 486 #if defined(OS_WIN)
 487     RegisterInvalidParamHandler();
 488     ui::win::CreateATLModuleIfNeeded();
 489
 490     sandbox_info_ = *params.sandbox_info;
 491 #else  // !OS_WIN
 492
 493 #if defined(OS_ANDROID)
 494     // See note at the initialization of ExitManager, below; basically,
 495     // only Android builds have the ctor/dtor handlers set up to use
 496     // TRACE_EVENT right away.
 497     TRACE_EVENT0("startup", "ContentMainRunnerImpl::Initialize");
 498 #endif  // OS_ANDROID
 499
 500     // NOTE(willchan): One might ask why these TCMalloc-related calls are done
 501     // here rather than in process_util_linux.cc with the definition of
 502     // EnableTerminationOnOutOfMemory().  That's because base shouldn't have a
 503     // dependency on TCMalloc.  Really, we ought to have our allocator shim code
 504     // implement this EnableTerminationOnOutOfMemory() function.  Whateverz.
 505     // This works for now.
 506 #if !defined(OS_MACOSX) && defined(USE_TCMALLOC)
 507
 508 #if defined(TYPE_PROFILING)
 509     base::type_profiler::InterceptFunctions::SetFunctions(
 510         base::type_profiler::NewInterceptForTCMalloc,
 511         base::type_profiler::DeleteInterceptForTCMalloc);
 512 #endif
 513
 514     // For tcmalloc, we need to tell it to behave like new.
 515     tc_set_new_mode(1);
 516
 517     // On windows, we've already set these thunks up in _heap_init()
 518     base::allocator::SetGetAllocatorWasteSizeFunction(
 519         GetAllocatorWasteSizeThunk);
 520     base::allocator::SetGetStatsFunction(GetStatsThunk);
 521     base::allocator::SetReleaseFreeMemoryFunction(ReleaseFreeMemoryThunk);
 522
 523     // Provide optional hook for monitoring allocation quantities on a
 524     // per-thread basis.  Only set the hook if the environment indicates this
 525     // needs to be enabled.
 526     const char* profiling = getenv(tracked_objects::kAlternateProfilerTime);
 527     if (profiling &&
 528         (atoi(profiling) == tracked_objects::TIME_SOURCE_TYPE_TCMALLOC)) {
 529       tracked_objects::SetAlternateTimeSource(
 530           MallocExtension::GetBytesAllocatedOnCurrentThread,
 531           tracked_objects::TIME_SOURCE_TYPE_TCMALLOC);
 532     }
 533 #endif  // !OS_MACOSX && USE_TCMALLOC
 534
 535     // On Android,
 536     // - setlocale() is not supported.
 537     // - We do not override the signal handlers so that we can get
 538     //   stack trace when crashing.
 539     // - The ipc_fd is passed through the Java service.
 540     // Thus, these are all disabled.
 541 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 542     // Set C library locale to make sure CommandLine can parse argument values
 543     // in correct encoding.
 544     setlocale(LC_ALL, "");
 545
 546     SetupSignalHandlers();
 547
 548     base::GlobalDescriptors* g_fds = base::GlobalDescriptors::GetInstance();
 549     g_fds->Set(kPrimaryIPCChannel,
 550                kPrimaryIPCChannel + base::GlobalDescriptors::kBaseDescriptor);
 551 #endif  // !OS_ANDROID && !OS_IOS
 552
 553 #if defined(OS_LINUX) || defined(OS_OPENBSD)
 554     g_fds->Set(kCrashDumpSignal,
 555                kCrashDumpSignal + base::GlobalDescriptors::kBaseDescriptor);
 556 #endif
 557
 558 #endif  // !OS_WIN
 559
 560     is_initialized_ = true;
 561     delegate_ = params.delegate;
 562
 563     // The exit manager is in charge of calling the dtors of singleton objects.
 564     // On Android, AtExitManager is set up when library is loaded.
 565     // On iOS, it's set up in main(), which can't call directly through to here.
 566     // A consequence of this is that you can't use the ctor/dtor-based
 567     // TRACE_EVENT methods on Linux or iOS builds till after we set this up.
 568 #if !defined(OS_ANDROID) && !defined(OS_IOS)
 569     if (!ui_task_) {
 570       // When running browser tests, don't create a second AtExitManager as that
 571       // interfers with shutdown when objects created before ContentMain is
 572       // called are destructed when it returns.
 573       exit_manager_.reset(new base::AtExitManager);
 574     }
 575 #endif  // !OS_ANDROID && !OS_IOS
 576
 577 #if defined(OS_MACOSX)
 578     // We need this pool for all the objects created before we get to the
 579     // event loop, but we don't want to leave them hanging around until the
 580     // app quits. Each "main" needs to flush this pool right before it goes into
 581     // its main event loop to get rid of the cruft.
 582     autorelease_pool_.reset(new base::mac::ScopedNSAutoreleasePool());
 583 #endif
 584
 585     // On Android, the command line is initialized when library is loaded and
 586     // we have already started our TRACE_EVENT0.
 587 #if !defined(OS_ANDROID)
 588     // argc/argv are ignored on Windows and Android; see command_line.h for
 589     // details.
 590     int argc = 0;
 591     const char** argv = NULL;
 592
 593 #if !defined(OS_WIN)
 594     argc = params.argc;
 595     argv = params.argv;
 596 #endif
 597
 598     base::CommandLine::Init(argc, argv);
 599
 600     if (!delegate_ || delegate_->ShouldEnableTerminationOnHeapCorruption())
 601       base::EnableTerminationOnHeapCorruption();
 602     base::EnableTerminationOnOutOfMemory();
 603
 604 #if !defined(OS_IOS)
 605     SetProcessTitleFromCommandLine(argv);
 606 #endif
 607 #endif // !OS_ANDROID
 608
 609     int exit_code = 0;
 610     if (delegate_ && delegate_->BasicStartupComplete(&exit_code))
 611       return exit_code;
 612
 613     completed_basic_startup_ = true;
 614
 615     const base::CommandLine& command_line =
 616         *base::CommandLine::ForCurrentProcess();
 617     std::string process_type =
 618         command_line.GetSwitchValueASCII(switches::kProcessType);
 619
 620 #if !defined(OS_IOS)
 621     // Initialize mojo here so that services can be registered.
 622     InitializeMojo();
 623 #endif
 624
 625     if (!GetContentClient())
 626       SetContentClient(&empty_content_client_);
 627     ContentClientInitializer::Set(process_type, delegate_);
 628
 629 #if defined(OS_WIN)
 630     // Route stdio to parent console (if any) or create one.
 631     if (command_line.HasSwitch(switches::kEnableLogging))
 632       base::RouteStdioToConsole();
 633 #endif
 634
 635     // Enable startup tracing asap to avoid early TRACE_EVENT calls being
 636     // ignored.
 637     if (command_line.HasSwitch(switches::kTraceStartup)) {
 638       base::debug::CategoryFilter category_filter(
 639           command_line.GetSwitchValueASCII(switches::kTraceStartup));
 640       base::debug::TraceLog::GetInstance()->SetEnabled(
 641           category_filter,
 642           base::debug::TraceLog::RECORDING_MODE,
 643           base::debug::TraceOptions(
 644               base::debug::RECORD_UNTIL_FULL));
 645     }
 646 #if !defined(OS_ANDROID)
 647     // Android tracing started at the beginning of the method.
 648     // Other OSes have to wait till we get here in order for all the memory
 649     // management setup to be completed.
 650     TRACE_EVENT0("startup", "ContentMainRunnerImpl::Initialize");
 651 #endif // !OS_ANDROID
 652
 653 #if defined(OS_MACOSX) && !defined(OS_IOS)
 654     // We need to allocate the IO Ports before the Sandbox is initialized or
 655     // the first instance of PowerMonitor is created.
 656     // It's important not to allocate the ports for processes which don't
 657     // register with the power monitor - see crbug.com/88867.
 658     if (process_type.empty() ||
 659         (delegate_ &&
 660          delegate_->ProcessRegistersWithSystemProcess(process_type))) {
 661       base::PowerMonitorDeviceSource::AllocateSystemIOPorts();
 662     }
 663
 664     if (!process_type.empty() &&
 665         (!delegate_ || delegate_->ShouldSendMachPort(process_type))) {
 666       MachBroker::ChildSendTaskPortToParent();
 667     }
 668 #elif defined(OS_WIN)
 669     base::TimeTicks::SetNowIsHighResNowIfSupported();
 670
 671     bool init_device_scale_factor = true;
 672     if (command_line.HasSwitch(switches::kDeviceScaleFactor)) {
 673       std::string scale_factor_string = command_line.GetSwitchValueASCII(
 674           switches::kDeviceScaleFactor);
 675       double scale_factor = 0;
 676       if (base::StringToDouble(scale_factor_string, &scale_factor)) {
 677         init_device_scale_factor = false;
 678         gfx::InitDeviceScaleFactor(scale_factor);
 679       }
 680     }
 681     if (init_device_scale_factor)
 682       ui::win::InitDeviceScaleFactor();
 683
 684     SetupCRT(command_line);
 685 #endif
 686
 687 #if defined(OS_POSIX)
 688     if (!process_type.empty()) {
 689       // When you hit Ctrl-C in a terminal running the browser
 690       // process, a SIGINT is delivered to the entire process group.
 691       // When debugging the browser process via gdb, gdb catches the
 692       // SIGINT for the browser process (and dumps you back to the gdb
 693       // console) but doesn't for the child processes, killing them.
 694       // The fix is to have child processes ignore SIGINT; they'll die
 695       // on their own when the browser process goes away.
 696       //
 697       // Note that we *can't* rely on BeingDebugged to catch this case because
 698       // we are the child process, which is not being debugged.
 699       // TODO(evanm): move this to some shared subprocess-init function.
 700       if (!base::debug::BeingDebugged())
 701         signal(SIGINT, SIG_IGN);
 702     }
 703 #endif
 704
 705 #if defined(USE_NSS)
 706     crypto::EarlySetupForNSSInit();
 707 #endif
 708
 709     ui::RegisterPathProvider();
 710     RegisterPathProvider();
 711     RegisterContentSchemes(true);
 712
 713 #if defined(OS_ANDROID)
 714     int icudata_fd = base::GlobalDescriptors::GetInstance()->MaybeGet(
 715         kAndroidICUDataDescriptor);
 716     if (icudata_fd != -1)
 717       CHECK(base::i18n::InitializeICUWithFileDescriptor(icudata_fd));
 718     else
 719       CHECK(base::i18n::InitializeICU());
 720 #else
 721     CHECK(base::i18n::InitializeICU());
 722 #endif
 723
 724     InitializeStatsTable(command_line);
 725
 726     if (delegate_)
 727       delegate_->PreSandboxStartup();
 728
 729     if (!process_type.empty())
 730       CommonSubprocessInit(process_type);
 731
 732 #if defined(OS_WIN)
 733     CHECK(InitializeSandbox(params.sandbox_info));
 734 #elif defined(OS_MACOSX) && !defined(OS_IOS)
 735     if (process_type == switches::kRendererProcess ||
 736         process_type == switches::kPpapiPluginProcess ||
 737         (delegate_ && delegate_->DelaySandboxInitialization(process_type))) {
 738       // On OS X the renderer sandbox needs to be initialized later in the
 739       // startup sequence in RendererMainPlatformDelegate::EnableSandbox().
 740     } else {
 741       CHECK(InitializeSandbox());
 742     }
 743 #endif
 744
 745     if (delegate_)
 746       delegate_->SandboxInitialized(process_type);
 747
 748     // Return -1 to indicate no early termination.
 749     return -1;
 750   }
 751
 752   virtual int Run() OVERRIDE {
 753     DCHECK(is_initialized_);
 754     DCHECK(!is_shutdown_);
 755     const base::CommandLine& command_line =
 756         *base::CommandLine::ForCurrentProcess();
 757     std::string process_type =
 758         command_line.GetSwitchValueASCII(switches::kProcessType);
 759
 760     MainFunctionParams main_params(command_line);
 761     main_params.ui_task = ui_task_;
 762 #if defined(OS_WIN)
 763     main_params.sandbox_info = &sandbox_info_;
 764 #elif defined(OS_MACOSX)
 765     main_params.autorelease_pool = autorelease_pool_.get();
 766 #endif
 767
 768 #if !defined(OS_IOS)
 769     return RunNamedProcessTypeMain(process_type, main_params, delegate_);
 770 #else
 771     return 1;
 772 #endif
 773   }
 774
 775   virtual void Shutdown() OVERRIDE {
 776     DCHECK(is_initialized_);
 777     DCHECK(!is_shutdown_);
 778
 779     if (completed_basic_startup_ && delegate_) {
 780       const base::CommandLine& command_line =
 781           *base::CommandLine::ForCurrentProcess();
 782       std::string process_type =
 783           command_line.GetSwitchValueASCII(switches::kProcessType);
 784
 785       delegate_->ProcessExiting(process_type);
 786     }
 787
 788 #if defined(OS_WIN)
 789 #ifdef _CRTDBG_MAP_ALLOC
 790     _CrtDumpMemoryLeaks();
 791 #endif  // _CRTDBG_MAP_ALLOC
 792 #endif  // OS_WIN
 793
 794 #if defined(OS_MACOSX)
 795     autorelease_pool_.reset(NULL);
 796 #endif
 797
 798     exit_manager_.reset(NULL);
 799
 800     delegate_ = NULL;
 801     is_shutdown_ = true;
 802   }
 803
 804  private:
 805   // True if the runner has been initialized.
 806   bool is_initialized_;
 807
 808   // True if the runner has been shut down.
 809   bool is_shutdown_;
 810
 811   // True if basic startup was completed.
 812   bool completed_basic_startup_;
 813
 814   // Used if the embedder doesn't set one.
 815   ContentClient empty_content_client_;
 816
 817   // The delegate will outlive this object.
 818   ContentMainDelegate* delegate_;
 819
 820   scoped_ptr<base::AtExitManager> exit_manager_;
 821 #if defined(OS_WIN)
 822   sandbox::SandboxInterfaceInfo sandbox_info_;
 823 #elif defined(OS_MACOSX)
 824   scoped_ptr<base::mac::ScopedNSAutoreleasePool> autorelease_pool_;
 825 #endif
 826
 827   base::Closure* ui_task_;
 828
 829   DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
 830 };
 831
 832 // static
 833 ContentMainRunner* ContentMainRunner::Create() {
 834   return new ContentMainRunnerImpl();
 835 }
 836
 837 }  // namespace content