blob: 61d38021262f80337b45fe592128b9955d8c2f01 [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/public/app/content_main_runner.h"
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <memory>
#include <string>
#include <utility>
#include <vector>
#include "base/allocator/allocator_check.h"
#include "base/allocator/allocator_extension.h"
#include "base/allocator/features.h"
#include "base/at_exit.h"
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/debug/debugger.h"
#include "base/debug/stack_trace.h"
#include "base/feature_list.h"
#include "base/files/file_path.h"
#include "base/i18n/icu_util.h"
#include "base/lazy_instance.h"
#include "base/logging.h"
#include "base/macros.h"
#include "base/metrics/field_trial.h"
#include "base/metrics/histogram_base.h"
#include "base/path_service.h"
#include "base/process/launch.h"
#include "base/process/memory.h"
#include "base/process/process.h"
#include "base/process/process_handle.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "components/tracing/common/trace_startup.h"
#include "content/app/mojo/mojo_init.h"
#include "content/common/url_schemes.h"
#include "content/public/app/content_main.h"
#include "content/public/app/content_main_delegate.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_constants.h"
#include "content/public/common/content_descriptor_keys.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_paths.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#include "content/public/common/sandbox_init.h"
#include "gin/v8_initializer.h"
#include "media/base/media.h"
#include "media/media_features.h"
#include "ppapi/features/features.h"
#include "services/service_manager/embedder/switches.h"
#include "services/service_manager/sandbox/sandbox_type.h"
#include "ui/base/ui_base_paths.h"
#include "ui/base/ui_base_switches.h"
#if defined(OS_WIN)
#include <malloc.h>
#include <cstring>
#include "base/trace_event/trace_event_etw_export_win.h"
#include "sandbox/win/src/sandbox_types.h"
#include "ui/display/win/dpi.h"
#elif defined(OS_MACOSX)
#include "base/mac/scoped_nsautorelease_pool.h"
#include "base/power_monitor/power_monitor_device_source.h"
#include "content/browser/mach_broker_mac.h"
#endif // OS_WIN
#if defined(OS_POSIX)
#include <signal.h>
#include "base/file_descriptor_store.h"
#include "base/posix/global_descriptors.h"
#include "content/public/common/content_descriptors.h"
#if !defined(OS_MACOSX)
#include "content/public/common/zygote_fork_delegate_linux.h"
#endif
#if !defined(OS_MACOSX) && !defined(OS_ANDROID)
#include "content/zygote/zygote_main.h"
#endif
#endif // OS_POSIX
#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
#include "content/public/gpu/content_gpu_client.h"
#include "content/public/renderer/content_renderer_client.h"
#include "content/public/utility/content_utility_client.h"
#endif
#if !defined(CHROME_MULTIPLE_DLL_CHILD)
#include "content/browser/browser_main.h"
#include "content/public/browser/content_browser_client.h"
#endif
#if !defined(CHROME_MULTIPLE_DLL_BROWSER) && !defined(CHROME_MULTIPLE_DLL_CHILD)
#include "content/browser/gpu/gpu_main_thread_factory.h"
#include "content/browser/renderer_host/render_process_host_impl.h"
#include "content/browser/utility_process_host_impl.h"
#include "content/gpu/in_process_gpu_thread.h"
#include "content/renderer/in_process_renderer_thread.h"
#include "content/utility/in_process_utility_thread.h"
#endif
namespace content {
extern int GpuMain(const content::MainFunctionParams&);
#if BUILDFLAG(ENABLE_PLUGINS)
#if !defined(OS_LINUX)
extern int PluginMain(const content::MainFunctionParams&);
#endif
extern int PpapiPluginMain(const MainFunctionParams&);
extern int PpapiBrokerMain(const MainFunctionParams&);
#endif
extern int RendererMain(const content::MainFunctionParams&);
extern int UtilityMain(const MainFunctionParams&);
} // namespace content
namespace content {
namespace {
#if defined(V8_USE_EXTERNAL_STARTUP_DATA) && defined(OS_ANDROID)
#if defined __LP64__
#define kV8SnapshotDataDescriptor kV8Snapshot64DataDescriptor
#else
#define kV8SnapshotDataDescriptor kV8Snapshot32DataDescriptor
#endif
#endif
// This sets up two singletons responsible for managing field trials. The
// |field_trial_list| singleton lives on the stack and must outlive the Run()
// method of the process.
void InitializeFieldTrialAndFeatureList(
std::unique_ptr<base::FieldTrialList>* field_trial_list) {
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
// Initialize statistical testing infrastructure. We set the entropy
// provider to nullptr to disallow non-browser processes from creating
// their own one-time randomized trials; they should be created in the
// browser process.
field_trial_list->reset(new base::FieldTrialList(nullptr));
// Ensure any field trials in browser are reflected into the child
// process.
#if defined(OS_POSIX)
// On POSIX systems that use the zygote, we get the trials from a shared
// memory segment backed by an fd instead of the command line.
base::FieldTrialList::CreateTrialsFromCommandLine(
command_line, switches::kFieldTrialHandle, kFieldTrialDescriptor);
#else
base::FieldTrialList::CreateTrialsFromCommandLine(
command_line, switches::kFieldTrialHandle, -1);
#endif
std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
base::FieldTrialList::CreateFeaturesFromCommandLine(
command_line, switches::kEnableFeatures, switches::kDisableFeatures,
feature_list.get());
base::FeatureList::SetInstance(std::move(feature_list));
}
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
void LoadV8ContextSnapshotFile() {
#if defined(OS_POSIX) && !defined(OS_MACOSX)
base::FileDescriptorStore& file_descriptor_store =
base::FileDescriptorStore::GetInstance();
base::MemoryMappedFile::Region region;
base::ScopedFD fd = file_descriptor_store.MaybeTakeFD(
kV8ContextSnapshotDataDescriptor, &region);
if (fd.is_valid()) {
gin::V8Initializer::LoadV8ContextSnapshotFromFD(fd.get(), region.offset,
region.size);
return;
}
#endif // OS_POSIX && !OS_MACOSX
#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
gin::V8Initializer::LoadV8ContextSnapshot();
#endif // !CHROME_MULTIPLE_DLL_BROWSER
}
void LoadV8SnapshotFile() {
#if defined(OS_POSIX) && !defined(OS_MACOSX)
base::FileDescriptorStore& file_descriptor_store =
base::FileDescriptorStore::GetInstance();
base::MemoryMappedFile::Region region;
base::ScopedFD fd =
file_descriptor_store.MaybeTakeFD(kV8SnapshotDataDescriptor, &region);
if (fd.is_valid()) {
gin::V8Initializer::LoadV8SnapshotFromFD(fd.get(), region.offset,
region.size);
return;
}
#endif // OS_POSIX && !OS_MACOSX
#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
gin::V8Initializer::LoadV8Snapshot();
#endif // !CHROME_MULTIPLE_DLL_BROWSER
}
void LoadV8NativesFile() {
#if defined(OS_POSIX) && !defined(OS_MACOSX)
base::FileDescriptorStore& file_descriptor_store =
base::FileDescriptorStore::GetInstance();
base::MemoryMappedFile::Region region;
base::ScopedFD fd =
file_descriptor_store.MaybeTakeFD(kV8NativesDataDescriptor, &region);
if (fd.is_valid()) {
gin::V8Initializer::LoadV8NativesFromFD(fd.get(), region.offset,
region.size);
return;
}
#endif // OS_POSIX && !OS_MACOSX
#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
gin::V8Initializer::LoadV8Natives();
#endif // !CHROME_MULTIPLE_DLL_BROWSER
}
#endif // V8_USE_EXTERNAL_STARTUP_DATA
void InitializeV8IfNeeded(const base::CommandLine& command_line,
const std::string& process_type) {
if (process_type == switches::kGpuProcess)
return;
#if defined(V8_USE_EXTERNAL_STARTUP_DATA)
LoadV8SnapshotFile();
LoadV8NativesFile();
LoadV8ContextSnapshotFile();
#endif // V8_USE_EXTERNAL_STARTUP_DATA
}
} // namespace
#if !defined(CHROME_MULTIPLE_DLL_CHILD)
base::LazyInstance<ContentBrowserClient>::DestructorAtExit
g_empty_content_browser_client = LAZY_INSTANCE_INITIALIZER;
#endif // !CHROME_MULTIPLE_DLL_CHILD
#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
base::LazyInstance<ContentGpuClient>::DestructorAtExit
g_empty_content_gpu_client = LAZY_INSTANCE_INITIALIZER;
base::LazyInstance<ContentRendererClient>::DestructorAtExit
g_empty_content_renderer_client = LAZY_INSTANCE_INITIALIZER;
base::LazyInstance<ContentUtilityClient>::DestructorAtExit
g_empty_content_utility_client = LAZY_INSTANCE_INITIALIZER;
#endif // !CHROME_MULTIPLE_DLL_BROWSER
class ContentClientInitializer {
public:
static void Set(const std::string& process_type,
ContentMainDelegate* delegate) {
ContentClient* content_client = GetContentClient();
#if !defined(CHROME_MULTIPLE_DLL_CHILD)
if (process_type.empty()) {
if (delegate)
content_client->browser_ = delegate->CreateContentBrowserClient();
if (!content_client->browser_)
content_client->browser_ = &g_empty_content_browser_client.Get();
}
#endif // !CHROME_MULTIPLE_DLL_CHILD
#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
base::CommandLine* cmd = base::CommandLine::ForCurrentProcess();
if (process_type == switches::kGpuProcess ||
cmd->HasSwitch(switches::kSingleProcess) ||
(process_type.empty() && cmd->HasSwitch(switches::kInProcessGPU))) {
if (delegate)
content_client->gpu_ = delegate->CreateContentGpuClient();
if (!content_client->gpu_)
content_client->gpu_ = &g_empty_content_gpu_client.Get();
}
if (process_type == switches::kRendererProcess ||
cmd->HasSwitch(switches::kSingleProcess)) {
if (delegate)
content_client->renderer_ = delegate->CreateContentRendererClient();
if (!content_client->renderer_)
content_client->renderer_ = &g_empty_content_renderer_client.Get();
}
if (process_type == switches::kUtilityProcess ||
cmd->HasSwitch(switches::kSingleProcess)) {
if (delegate)
content_client->utility_ = delegate->CreateContentUtilityClient();
// TODO(scottmg): http://crbug.com/237249 Should be in _child.
if (!content_client->utility_)
content_client->utility_ = &g_empty_content_utility_client.Get();
}
#endif // !CHROME_MULTIPLE_DLL_BROWSER
}
};
// We dispatch to a process-type-specific FooMain() based on a command-line
// flag. This struct is used to build a table of (flag, main function) pairs.
struct MainFunction {
const char* name;
int (*function)(const MainFunctionParams&);
};
#if defined(OS_LINUX)
// On platforms that use the zygote, we have a special subset of
// subprocesses that are launched via the zygote. This function
// fills in some process-launching bits around ZygoteMain().
// Returns the exit code of the subprocess.
int RunZygote(const MainFunctionParams& main_function_params,
ContentMainDelegate* delegate) {
static const MainFunction kMainFunctions[] = {
{ switches::kRendererProcess, RendererMain },
#if BUILDFLAG(ENABLE_PLUGINS)
{ switches::kPpapiPluginProcess, PpapiPluginMain },
#endif
{ switches::kUtilityProcess, UtilityMain },
};
std::vector<std::unique_ptr<ZygoteForkDelegate>> zygote_fork_delegates;
if (delegate) {
delegate->ZygoteStarting(&zygote_fork_delegates);
media::InitializeMediaLibrary();
}
// This function call can return multiple times, once per fork().
if (!ZygoteMain(main_function_params, std::move(zygote_fork_delegates)))
return 1;
if (delegate) delegate->ZygoteForked();
// Zygote::HandleForkRequest may have reallocated the command
// line so update it here with the new version.
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
std::string process_type =
command_line.GetSwitchValueASCII(switches::kProcessType);
ContentClientInitializer::Set(process_type, delegate);
MainFunctionParams main_params(command_line);
main_params.zygote_child = true;
std::unique_ptr<base::FieldTrialList> field_trial_list;
InitializeFieldTrialAndFeatureList(&field_trial_list);
service_manager::SandboxType sandbox_type =
service_manager::SandboxTypeFromCommandLine(command_line);
if (sandbox_type == service_manager::SANDBOX_TYPE_PROFILING)
content::DisableLocaltimeOverride();
for (size_t i = 0; i < arraysize(kMainFunctions); ++i) {
if (process_type == kMainFunctions[i].name)
return kMainFunctions[i].function(main_params);
}
if (delegate)
return delegate->RunProcess(process_type, main_params);
NOTREACHED() << "Unknown zygote process type: " << process_type;
return 1;
}
#endif // defined(OS_LINUX)
static void RegisterMainThreadFactories() {
#if !defined(CHROME_MULTIPLE_DLL_BROWSER) && !defined(CHROME_MULTIPLE_DLL_CHILD)
UtilityProcessHostImpl::RegisterUtilityMainThreadFactory(
CreateInProcessUtilityThread);
RenderProcessHostImpl::RegisterRendererMainThreadFactory(
CreateInProcessRendererThread);
content::RegisterGpuMainThreadFactory(CreateInProcessGpuThread);
#else
base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
if (command_line.HasSwitch(switches::kSingleProcess)) {
LOG(FATAL) <<
"--single-process is not supported in chrome multiple dll browser.";
}
if (command_line.HasSwitch(switches::kInProcessGPU)) {
LOG(FATAL) <<
"--in-process-gpu is not supported in chrome multiple dll browser.";
}
#endif // !CHROME_MULTIPLE_DLL_BROWSER && !CHROME_MULTIPLE_DLL_CHILD
}
// Run the FooMain() for a given process type.
// If |process_type| is empty, runs BrowserMain().
// Returns the exit code for this process.
int RunNamedProcessTypeMain(
const std::string& process_type,
const MainFunctionParams& main_function_params,
ContentMainDelegate* delegate) {
static const MainFunction kMainFunctions[] = {
#if !defined(CHROME_MULTIPLE_DLL_CHILD)
{ "", BrowserMain },
#endif
#if !defined(CHROME_MULTIPLE_DLL_BROWSER)
#if BUILDFLAG(ENABLE_PLUGINS)
{ switches::kPpapiPluginProcess, PpapiPluginMain },
{ switches::kPpapiBrokerProcess, PpapiBrokerMain },
#endif // ENABLE_PLUGINS
{ switches::kUtilityProcess, UtilityMain },
{ switches::kRendererProcess, RendererMain },
{ switches::kGpuProcess, GpuMain },
#endif // !CHROME_MULTIPLE_DLL_BROWSER
};
RegisterMainThreadFactories();
for (size_t i = 0; i < arraysize(kMainFunctions); ++i) {
if (process_type == kMainFunctions[i].name) {
if (delegate) {
int exit_code = delegate->RunProcess(process_type,
main_function_params);
#if defined(OS_ANDROID)
// In Android's browser process, the negative exit code doesn't mean the
// default behavior should be used as the UI message loop is managed by
// the Java and the browser process's default behavior is always
// overridden.
if (process_type.empty())
return exit_code;
#endif
if (exit_code >= 0)
return exit_code;
}
return kMainFunctions[i].function(main_function_params);
}
}
#if defined(OS_POSIX) && !defined(OS_MACOSX) && !defined(OS_ANDROID) && \
!defined(OS_FUCHSIA)
// Zygote startup is special -- see RunZygote comments above
// for why we don't use ZygoteMain directly.
if (process_type == switches::kZygoteProcess)
return RunZygote(main_function_params, delegate);
#endif
// If it's a process we don't know about, the embedder should know.
if (delegate)
return delegate->RunProcess(process_type, main_function_params);
NOTREACHED() << "Unknown process type: " << process_type;
return 1;
}
class ContentMainRunnerImpl : public ContentMainRunner {
public:
ContentMainRunnerImpl() {
#if defined(OS_WIN)
memset(&sandbox_info_, 0, sizeof(sandbox_info_));
#endif
}
~ContentMainRunnerImpl() override {
if (is_initialized_ && !is_shutdown_)
Shutdown();
}
int TerminateForFatalInitializationError() {
if (delegate_)
return delegate_->TerminateForFatalInitializationError();
CHECK(false);
return 0;
}
int Initialize(const ContentMainParams& params) override {
ui_task_ = params.ui_task;
created_main_parts_closure_ = params.created_main_parts_closure;
create_discardable_memory_ = params.create_discardable_memory;
#if defined(USE_AURA)
env_mode_ = params.env_mode;
#endif
#if defined(OS_WIN)
sandbox_info_ = *params.sandbox_info;
#else // !OS_WIN
#if defined(OS_MACOSX)
autorelease_pool_ = params.autorelease_pool;
#endif // defined(OS_MACOSX)
#if defined(OS_ANDROID)
// See note at the initialization of ExitManager, below; basically,
// only Android builds have the ctor/dtor handlers set up to use
// TRACE_EVENT right away.
TRACE_EVENT0("startup,benchmark,rail", "ContentMainRunnerImpl::Initialize");
#endif // OS_ANDROID
base::GlobalDescriptors* g_fds = base::GlobalDescriptors::GetInstance();
ALLOW_UNUSED_LOCAL(g_fds);
// On Android, the ipc_fd is passed through the Java service.
#if !defined(OS_ANDROID)
g_fds->Set(kMojoIPCChannel,
kMojoIPCChannel + base::GlobalDescriptors::kBaseDescriptor);
g_fds->Set(
kFieldTrialDescriptor,
kFieldTrialDescriptor + base::GlobalDescriptors::kBaseDescriptor);
#endif // !OS_ANDROID
#if defined(OS_LINUX) || defined(OS_OPENBSD)
g_fds->Set(kCrashDumpSignal,
kCrashDumpSignal + base::GlobalDescriptors::kBaseDescriptor);
#endif // OS_LINUX || OS_OPENBSD
#endif // !OS_WIN
is_initialized_ = true;
delegate_ = params.delegate;
// The exit manager is in charge of calling the dtors of singleton objects.
// On Android, AtExitManager is set up when library is loaded.
// A consequence of this is that you can't use the ctor/dtor-based
// TRACE_EVENT methods on Linux or iOS builds till after we set this up.
#if !defined(OS_ANDROID)
if (!ui_task_) {
// When running browser tests, don't create a second AtExitManager as that
// interfers with shutdown when objects created before ContentMain is
// called are destructed when it returns.
exit_manager_.reset(new base::AtExitManager);
}
#endif // !OS_ANDROID
int exit_code = 0;
if (delegate_ && delegate_->BasicStartupComplete(&exit_code))
return exit_code;
completed_basic_startup_ = true;
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
std::string process_type =
command_line.GetSwitchValueASCII(switches::kProcessType);
#if defined(OS_WIN)
if (command_line.HasSwitch(switches::kDeviceScaleFactor)) {
std::string scale_factor_string = command_line.GetSwitchValueASCII(
switches::kDeviceScaleFactor);
double scale_factor = 0;
if (base::StringToDouble(scale_factor_string, &scale_factor))
display::win::SetDefaultDeviceScaleFactor(scale_factor);
}
#endif
if (!GetContentClient())
SetContentClient(&empty_content_client_);
ContentClientInitializer::Set(process_type, delegate_);
#if !defined(OS_ANDROID)
// Enable startup tracing asap to avoid early TRACE_EVENT calls being
// ignored. For Android, startup tracing is enabled in an even earlier place
// content/app/android/library_loader_hooks.cc.
// Zygote process does not have file thread and renderer process on Win10
// cannot access the file system.
// TODO(ssid): Check if other processes can enable startup tracing here.
bool can_access_file_system = (process_type != switches::kZygoteProcess &&
process_type != switches::kRendererProcess);
tracing::EnableStartupTracingIfNeeded(can_access_file_system);
#endif // !OS_ANDROID
#if defined(OS_WIN)
// Enable exporting of events to ETW if requested on the command line.
if (command_line.HasSwitch(switches::kTraceExportEventsToETW))
base::trace_event::TraceEventETWExport::EnableETWExport();
#endif // OS_WIN
#if !defined(OS_ANDROID)
// Android tracing started at the beginning of the method.
// Other OSes have to wait till we get here in order for all the memory
// management setup to be completed.
TRACE_EVENT0("startup,benchmark,rail", "ContentMainRunnerImpl::Initialize");
#endif // !OS_ANDROID
#if defined(OS_MACOSX)
// We need to allocate the IO Ports before the Sandbox is initialized or
// the first instance of PowerMonitor is created.
// It's important not to allocate the ports for processes which don't
// register with the power monitor - see crbug.com/88867.
if (process_type.empty() ||
(delegate_ &&
delegate_->ProcessRegistersWithSystemProcess(process_type))) {
base::PowerMonitorDeviceSource::AllocateSystemIOPorts();
}
if (!process_type.empty() &&
(!delegate_ || delegate_->ShouldSendMachPort(process_type))) {
MachBroker::ChildSendTaskPortToParent();
}
#endif
// If we are on a platform where the default allocator is overridden (shim
// layer on windows, tcmalloc on Linux Desktop) smoke-tests that the
// overriding logic is working correctly. If not causes a hard crash, as its
// unexpected absence has security implications.
CHECK(base::allocator::IsAllocatorInitialized());
#if defined(OS_POSIX)
if (!process_type.empty()) {
// When you hit Ctrl-C in a terminal running the browser
// process, a SIGINT is delivered to the entire process group.
// When debugging the browser process via gdb, gdb catches the
// SIGINT for the browser process (and dumps you back to the gdb
// console) but doesn't for the child processes, killing them.
// The fix is to have child processes ignore SIGINT; they'll die
// on their own when the browser process goes away.
//
// Note that we *can't* rely on BeingDebugged to catch this case because
// we are the child process, which is not being debugged.
// TODO(evanm): move this to some shared subprocess-init function.
if (!base::debug::BeingDebugged())
signal(SIGINT, SIG_IGN);
}
#endif
RegisterPathProvider();
RegisterContentSchemes(true);
#if defined(OS_ANDROID) && (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE)
int icudata_fd = g_fds->MaybeGet(kAndroidICUDataDescriptor);
if (icudata_fd != -1) {
auto icudata_region = g_fds->GetRegion(kAndroidICUDataDescriptor);
if (!base::i18n::InitializeICUWithFileDescriptor(icudata_fd,
icudata_region))
return TerminateForFatalInitializationError();
} else {
if (!base::i18n::InitializeICU())
return TerminateForFatalInitializationError();
}
#else
if (!base::i18n::InitializeICU())
return TerminateForFatalInitializationError();
#endif // OS_ANDROID && (ICU_UTIL_DATA_IMPL == ICU_UTIL_DATA_FILE)
InitializeV8IfNeeded(command_line, process_type);
#if !defined(OFFICIAL_BUILD)
#if defined(OS_WIN)
bool should_enable_stack_dump = !process_type.empty();
#else
bool should_enable_stack_dump = true;
#endif
// Print stack traces to stderr when crashes occur. This opens up security
// holes so it should never be enabled for official builds. This needs to
// happen before crash reporting is initialized (which for chrome happens in
// the call to PreSandboxStartup() on the delegate below), because otherwise
// this would interfere with signal handlers used by crash reporting.
if (should_enable_stack_dump &&
!command_line.HasSwitch(
service_manager::switches::kDisableInProcessStackTraces)) {
base::debug::EnableInProcessStackDumping();
}
#endif // !defined(OFFICIAL_BUILD)
if (delegate_)
delegate_->PreSandboxStartup();
#if defined(OS_WIN)
if (!InitializeSandbox(
service_manager::SandboxTypeFromCommandLine(command_line),
params.sandbox_info))
return TerminateForFatalInitializationError();
#elif defined(OS_MACOSX)
// Do not initialize the sandbox at this point if the V2
// sandbox is enabled for the process type.
bool v2_enabled = base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kEnableV2Sandbox);
if (process_type == switches::kRendererProcess ||
process_type == switches::kPpapiPluginProcess || v2_enabled ||
(delegate_ && delegate_->DelaySandboxInitialization(process_type))) {
// On OS X the renderer sandbox needs to be initialized later in the
// startup sequence in RendererMainPlatformDelegate::EnableSandbox().
} else {
if (!InitializeSandbox())
return TerminateForFatalInitializationError();
}
#endif
if (delegate_)
delegate_->SandboxInitialized(process_type);
// Return -1 to indicate no early termination.
return -1;
}
int Run() override {
DCHECK(is_initialized_);
DCHECK(!is_shutdown_);
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
std::string process_type =
command_line.GetSwitchValueASCII(switches::kProcessType);
// Run this logic on all child processes. Zygotes will run this at a later
// point in time when the command line has been updated.
std::unique_ptr<base::FieldTrialList> field_trial_list;
if (!process_type.empty() && process_type != switches::kZygoteProcess)
InitializeFieldTrialAndFeatureList(&field_trial_list);
MainFunctionParams main_params(command_line);
main_params.ui_task = ui_task_;
main_params.created_main_parts_closure = created_main_parts_closure_;
#if defined(OS_WIN)
main_params.sandbox_info = &sandbox_info_;
#elif defined(OS_MACOSX)
main_params.autorelease_pool = autorelease_pool_;
#endif
#if defined(USE_AURA)
main_params.env_mode = env_mode_;
#endif
main_params.create_discardable_memory = create_discardable_memory_;
return RunNamedProcessTypeMain(process_type, main_params, delegate_);
}
void Shutdown() override {
DCHECK(is_initialized_);
DCHECK(!is_shutdown_);
if (completed_basic_startup_ && delegate_) {
const base::CommandLine& command_line =
*base::CommandLine::ForCurrentProcess();
std::string process_type =
command_line.GetSwitchValueASCII(switches::kProcessType);
delegate_->ProcessExiting(process_type);
}
#if defined(OS_WIN)
#ifdef _CRTDBG_MAP_ALLOC
_CrtDumpMemoryLeaks();
#endif // _CRTDBG_MAP_ALLOC
#endif // OS_WIN
exit_manager_.reset(nullptr);
delegate_ = nullptr;
is_shutdown_ = true;
}
private:
// True if the runner has been initialized.
bool is_initialized_ = false;
// True if the runner has been shut down.
bool is_shutdown_ = false;
// True if basic startup was completed.
bool completed_basic_startup_ = false;
// Used if the embedder doesn't set one.
ContentClient empty_content_client_;
// The delegate will outlive this object.
ContentMainDelegate* delegate_ = nullptr;
std::unique_ptr<base::AtExitManager> exit_manager_;
#if defined(OS_WIN)
sandbox::SandboxInterfaceInfo sandbox_info_;
#elif defined(OS_MACOSX)
base::mac::ScopedNSAutoreleasePool* autorelease_pool_ = nullptr;
#endif
base::Closure* ui_task_ = nullptr;
CreatedMainPartsClosure* created_main_parts_closure_ = nullptr;
#if defined(USE_AURA)
aura::Env::Mode env_mode_ = aura::Env::Mode::LOCAL;
#endif
bool create_discardable_memory_ = true;
DISALLOW_COPY_AND_ASSIGN(ContentMainRunnerImpl);
};
// static
ContentMainRunner* ContentMainRunner::Create() {
return new ContentMainRunnerImpl();
}
} // namespace content