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Refactor process execution logic (see issue #2969) 

CefContext implements the public CEF API functions and delegates
the stages of content & service_manager process execution to
CefMainRunner. CEF-specific runtime logic (which may be replaced
with chrome-specific runtime logic) is then delegated to
CefMainDelegate which implements content::ContentMainDelegate.
This commit is contained in:
Marshall Greenblatt 2020-06-24 16:26:12 -04:00
parent 39aed35644
commit 049caf9131
11 changed files with 715 additions and 483 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
BUILD.gn
View File

@ -511,6 +511,8 @@ static_library("libcef_static") {
"libcef/browser/javascript_dialog_runner.h",
"libcef/browser/javascript_dialog_manager.cc",
"libcef/browser/javascript_dialog_manager.h",
"libcef/browser/main_runner.cc",
"libcef/browser/main_runner.h",
"libcef/browser/media_capture_devices_dispatcher.cc",
"libcef/browser/media_capture_devices_dispatcher.h",
"libcef/browser/media_router/media_route_impl.cc",

6
libcef/browser/browser_message_loop.cc
View File

@ -3,7 +3,6 @@
// be found in the LICENSE file.
#include "libcef/browser/browser_message_loop.h"
#include "libcef/browser/context.h"
#include "libcef/common/content_client.h"
#include "base/memory/ptr_util.h"
@ -116,9 +115,6 @@ std::unique_ptr<base::MessagePump> MessagePumpFactoryForUI() {
} // namespace
void InitMessagePumpFactoryForUI() {
const CefSettings& settings = CefContext::Get()->settings();
if (settings.external_message_pump) {
void InitExternalMessagePumpFactoryForUI() {
base::MessagePump::OverrideMessagePumpForUIFactory(MessagePumpFactoryForUI);
}
}

2
libcef/browser/browser_message_loop.h
View File

@ -5,6 +5,6 @@
#ifndef CEF_LIBCEF_BROWSER_BROWSER_MESSAGE_LOOP_H_
#define CEF_LIBCEF_BROWSER_BROWSER_MESSAGE_LOOP_H_
void InitMessagePumpFactoryForUI();
void InitExternalMessagePumpFactoryForUI();
#endif // CEF_LIBCEF_BROWSER_BROWSER_MESSAGE_LOOP_H_

2
libcef/browser/chrome_browser_process_stub.cc
View File

@ -62,7 +62,7 @@ void ChromeBrowserProcessStub::OnContextInitialized() {
context_initialized_ = true;
}
void ChromeBrowserProcessStub::Shutdown() {
void ChromeBrowserProcessStub::CleanupOnUIThread() {
CEF_REQUIRE_UIT();
DCHECK(initialized_);
DCHECK(context_initialized_);

2
libcef/browser/chrome_browser_process_stub.h
View File

@ -36,7 +36,7 @@ class ChromeBrowserProcessStub : public BrowserProcess {
void Initialize();
void OnContextInitialized();
void Shutdown();
void CleanupOnUIThread();
// BrowserProcess implementation.
void EndSession() override;

258
libcef/browser/context.cc
View File

@ -3,34 +3,20 @@
// be found in the LICENSE file.
#include "libcef/browser/context.h"
#include "libcef/browser/browser_host_impl.h"
#include "libcef/browser/browser_info.h"
#include "libcef/browser/browser_info_manager.h"
#include "libcef/browser/browser_main.h"
#include "libcef/browser/chrome_browser_process_stub.h"
#include "libcef/browser/thread_util.h"
#include "libcef/browser/trace_subscriber.h"
#include "libcef/common/cef_switches.h"
#include "libcef/common/main_delegate.h"
#include "libcef/common/widevine_loader.h"
#include "libcef/renderer/content_renderer_client.h"
#include "base/base_switches.h"
#include "base/bind.h"
#include "base/command_line.h"
#include "base/debug/debugger.h"
#include "base/files/file_util.h"
#include "base/message_loop/message_loop_current.h"
#include "base/run_loop.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread_restrictions.h"
#include "components/network_session_configurator/common/network_switches.h"
#include "content/app/content_service_manager_main_delegate.h"
#include "content/public/browser/notification_service.h"
#include "content/public/browser/notification_types.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_switches.h"
#include "services/service_manager/embedder/main.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/base/ui_base_switches.h"
#if defined(OS_WIN)
@ -38,13 +24,6 @@
#include "chrome/chrome_elf/chrome_elf_main.h"
#include "chrome/install_static/initialize_from_primary_module.h"
#include "components/crash/core/app/crashpad.h"
#include "content/public/app/sandbox_helper_win.h"
#include "sandbox/win/src/sandbox_types.h"
#endif
#if defined(OS_MACOSX) || defined(OS_WIN)
#include "components/crash/core/app/crash_switches.h"
#include "third_party/crashpad/crashpad/handler/handler_main.h"
#endif
namespace {
@ -95,54 +74,6 @@ void InitCrashReporter() {
}
#endif // defined(OS_WIN)
#if defined(OS_MACOSX) || defined(OS_WIN)
// Based on components/crash/core/app/run_as_crashpad_handler_win.cc
// Remove the "--type=crashpad-handler" command-line flag that will otherwise
// confuse the crashpad handler.
// Chrome uses an embedded crashpad handler on Windows only and imports this
// function via the existing "run_as_crashpad_handler" target defined in
// components/crash/core/app/BUILD.gn. CEF uses an embedded handler on both
// Windows and macOS so we define the function here instead of using the
// existing target (because we can't use that target on macOS).
int RunAsCrashpadHandler(const base::CommandLine& command_line) {
base::CommandLine::StringVector argv = command_line.argv();
const base::CommandLine::StringType process_type =
FILE_PATH_LITERAL("--type=");
argv.erase(
std::remove_if(argv.begin(), argv.end(),
[&process_type](const base::CommandLine::StringType& str) {
return base::StartsWith(str, process_type,
base::CompareCase::SENSITIVE) ||
(!str.empty() && str[0] == L'/');
}),
argv.end());
#if defined(OS_MACOSX)
// HandlerMain on macOS uses the system version of getopt_long which expects
// the first argument to be the program name.
argv.insert(argv.begin(), command_line.GetProgram().value());
#endif
std::unique_ptr<char*[]> argv_as_utf8(new char*[argv.size() + 1]);
std::vector<std::string> storage;
storage.reserve(argv.size());
for (size_t i = 0; i < argv.size(); ++i) {
#if defined(OS_WIN)
storage.push_back(base::UTF16ToUTF8(argv[i]));
#else
storage.push_back(argv[i]);
#endif
argv_as_utf8[i] = &storage[i][0];
}
argv_as_utf8[argv.size()] = nullptr;
argv.clear();
return crashpad::HandlerMain(static_cast<int>(storage.size()),
argv_as_utf8.get(), nullptr);
}
#endif // defined(OS_MACOSX) || defined(OS_WIN)
bool GetColor(const cef_color_t cef_in, bool is_windowless, SkColor* sk_out) {
// Windowed browser colors must be fully opaque.
if (!is_windowless && CefColorGetA(cef_in) != SK_AlphaOPAQUE)
@ -252,52 +183,8 @@ int CefExecuteProcess(const CefMainArgs& args,
InitCrashReporter();
#endif
base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
#if defined(OS_WIN)
command_line.ParseFromString(::GetCommandLineW());
#else
command_line.InitFromArgv(args.argc, args.argv);
#endif
// Wait for the debugger as early in process initialization as possible.
if (command_line.HasSwitch(switches::kWaitForDebugger))
base::debug::WaitForDebugger(60, true);
// If no process type is specified then it represents the browser process and
// we do nothing.
std::string process_type =
command_line.GetSwitchValueASCII(switches::kProcessType);
if (process_type.empty())
return -1;
#if defined(OS_MACOSX) || defined(OS_WIN)
if (process_type == crash_reporter::switches::kCrashpadHandler)
return RunAsCrashpadHandler(command_line);
#endif
CefMainDelegate main_delegate(application);
// Execute the secondary process.
#if defined(OS_WIN)
sandbox::SandboxInterfaceInfo sandbox_info = {0};
if (windows_sandbox_info == nullptr) {
content::InitializeSandboxInfo(&sandbox_info);
windows_sandbox_info = &sandbox_info;
}
content::ContentMainParams params(&main_delegate);
params.instance = args.instance;
params.sandbox_info =
static_cast<sandbox::SandboxInterfaceInfo*>(windows_sandbox_info);
return content::ContentMain(params);
#else
content::ContentMainParams params(&main_delegate);
params.argc = args.argc;
params.argv = const_cast<const char**>(args.argv);
return content::ContentMain(params);
#endif
return CefMainRunner::RunAsHelperProcess(args, application,
windows_sandbox_info);
}
bool CefInitialize(const CefMainArgs& args,
@ -321,8 +208,6 @@ bool CefInitialize(const CefMainArgs& args,
return false;
}
g_browser_process = new ChromeBrowserProcessStub();
// Create the new global context object.
g_context = new CefContext();
@ -466,108 +351,25 @@ bool CefContext::Initialize(const CefMainArgs& args,
NormalizePathAndSet(settings_.resources_dir_path, "resources_dir_path");
NormalizePathAndSet(settings_.locales_dir_path, "locales_dir_path");
main_delegate_.reset(new CefMainDelegate(application));
browser_info_manager_.reset(new CefBrowserInfoManager);
int exit_code;
// Initialize the content runner.
content::ContentMainParams params(main_delegate_.get());
#if defined(OS_WIN)
sandbox::SandboxInterfaceInfo sandbox_info = {0};
if (windows_sandbox_info == nullptr) {
windows_sandbox_info = &sandbox_info;
settings_.no_sandbox = true;
}
params.instance = args.instance;
params.sandbox_info =
static_cast<sandbox::SandboxInterfaceInfo*>(windows_sandbox_info);
#else
params.argc = args.argc;
params.argv = const_cast<const char**>(args.argv);
#endif
sm_main_delegate_.reset(
new content::ContentServiceManagerMainDelegate(params));
sm_main_params_.reset(
new service_manager::MainParams(sm_main_delegate_.get()));
#if defined(OS_POSIX) && !defined(OS_ANDROID)
sm_main_params_->argc = params.argc;
sm_main_params_->argv = params.argv;
#endif
exit_code = service_manager::MainInitialize(*sm_main_params_);
DCHECK_LT(exit_code, 0);
if (exit_code >= 0)
return false;
static_cast<ChromeBrowserProcessStub*>(g_browser_process)->Initialize();
if (settings.multi_threaded_message_loop) {
base::WaitableEvent uithread_startup_event(
base::WaitableEvent::ResetPolicy::AUTOMATIC,
base::WaitableEvent::InitialState::NOT_SIGNALED);
if (!main_delegate_->CreateUIThread(base::BindOnce(
[](CefContext* context, base::WaitableEvent* event) {
service_manager::MainRun(*context->sm_main_params_);
event->Signal();
},
base::Unretained(this),
base::Unretained(&uithread_startup_event)))) {
return false;
}
initialized_ = true;
// We need to wait until service_manager::MainRun has finished.
uithread_startup_event.Wait();
} else {
initialized_ = true;
service_manager::MainRun(*sm_main_params_);
}
if (CEF_CURRENTLY_ON_UIT()) {
OnContextInitialized();
} else {
// Continue initialization on the UI thread.
CEF_POST_TASK(CEF_UIT, base::Bind(&CefContext::OnContextInitialized,
main_runner_.reset(new CefMainRunner(settings_.multi_threaded_message_loop,
settings_.external_message_pump));
return main_runner_->Initialize(
&settings_, application, args, windows_sandbox_info, &initialized_,
base::BindOnce(&CefContext::OnContextInitialized,
base::Unretained(this)));
}
return true;
}
void CefContext::Shutdown() {
// Must always be called on the same thread as Initialize.
DCHECK(OnInitThread());
shutting_down_ = true;
if (settings_.multi_threaded_message_loop) {
// Events that will be used to signal when shutdown is complete. Start in
// non-signaled mode so that the event will block.
base::WaitableEvent uithread_shutdown_event(
base::WaitableEvent::ResetPolicy::AUTOMATIC,
base::WaitableEvent::InitialState::NOT_SIGNALED);
// Finish shutdown on the UI thread.
CEF_POST_TASK(CEF_UIT,
base::Bind(&CefContext::FinishShutdownOnUIThread,
base::Unretained(this), &uithread_shutdown_event));
/// Block until UI thread shutdown is complete.
uithread_shutdown_event.Wait();
FinalizeShutdown();
} else {
// Finish shutdown on the current thread, which should be the UI thread.
FinishShutdownOnUIThread(nullptr);
FinalizeShutdown();
}
main_runner_->Shutdown(
base::BindOnce(&CefContext::ShutdownOnUIThread, base::Unretained(this)),
base::BindOnce(&CefContext::FinalizeShutdown, base::Unretained(this)));
}
bool CefContext::OnInitThread() {
@ -654,13 +456,6 @@ bool CefContext::HasObserver(Observer* observer) const {
void CefContext::OnContextInitialized() {
CEF_REQUIRE_UIT();
static_cast<ChromeBrowserProcessStub*>(g_browser_process)
->OnContextInitialized();
#if BUILDFLAG(ENABLE_WIDEVINE) && BUILDFLAG(ENABLE_LIBRARY_CDMS)
CefWidevineLoader::GetInstance()->OnContextInitialized();
#endif
// Notify the handler.
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
@ -671,8 +466,7 @@ void CefContext::OnContextInitialized() {
}
}
void CefContext::FinishShutdownOnUIThread(
base::WaitableEvent* uithread_shutdown_event) {
void CefContext::ShutdownOnUIThread() {
CEF_REQUIRE_UIT();
browser_info_manager_->DestroyAllBrowsers();
@ -682,34 +476,8 @@ void CefContext::FinishShutdownOnUIThread(
if (trace_subscriber_.get())
trace_subscriber_.reset(nullptr);
static_cast<ChromeBrowserProcessStub*>(g_browser_process)->Shutdown();
ui::ResourceBundle::GetSharedInstance().CleanupOnUIThread();
sm_main_delegate_->ShutdownOnUIThread();
if (uithread_shutdown_event)
uithread_shutdown_event->Signal();
}
void CefContext::FinalizeShutdown() {
if (content::RenderProcessHost::run_renderer_in_process()) {
// Blocks until RenderProcess cleanup is complete.
CefContentRendererClient::Get()->RunSingleProcessCleanup();
}
// Shut down the browser runner or UI thread.
main_delegate_->ShutdownBrowser();
// Shut down the content runner.
service_manager::MainShutdown(*sm_main_params_);
browser_info_manager_.reset(nullptr);
sm_main_params_.reset(nullptr);
sm_main_delegate_.reset(nullptr);
main_delegate_.reset(nullptr);
delete g_browser_process;
g_browser_process = nullptr;
}

20
libcef/browser/context.h
View File

@ -11,26 +11,14 @@
#include <string>
#include "include/cef_app.h"
#include "libcef/browser/main_runner.h"
#include "base/observer_list.h"
#include "base/threading/platform_thread.h"
#include "third_party/skia/include/core/SkColor.h"
namespace base {
class WaitableEvent;
}
namespace content {
class ContentServiceManagerMainDelegate;
}
namespace service_manager {
struct MainParams;
}
class CefBrowserHostImpl;
class CefBrowserInfoManager;
class CefMainDelegate;
class CefTraceSubscriber;
class CefContext {
@ -105,7 +93,7 @@ class CefContext {
// Performs shutdown actions that need to occur on the UI thread before any
// threads are destroyed.
void FinishShutdownOnUIThread(base::WaitableEvent* uithread_shutdown_event);
void ShutdownOnUIThread();
// Destroys the main runner and related objects.
void FinalizeShutdown();
@ -119,9 +107,7 @@ class CefContext {
CefSettings settings_;
std::unique_ptr<CefMainDelegate> main_delegate_;
std::unique_ptr<content::ContentServiceManagerMainDelegate> sm_main_delegate_;
std::unique_ptr<service_manager::MainParams> sm_main_params_;
std::unique_ptr<CefMainRunner> main_runner_;
std::unique_ptr<CefTraceSubscriber> trace_subscriber_;
std::unique_ptr<CefBrowserInfoManager> browser_info_manager_;

489
libcef/browser/main_runner.cc Normal file
View File

@ -0,0 +1,489 @@
// Copyright 2020 The Chromium Embedded Framework Authors.
// Portions copyright 2014 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 "libcef/browser/main_runner.h"
#include "libcef/browser/browser_message_loop.h"
#include "libcef/browser/thread_util.h"
#include "libcef/renderer/content_renderer_client.h"
#include "base/at_exit.h"
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/debug/debugger.h"
#include "base/run_loop.h"
#include "base/sequence_checker.h"
#include "base/synchronization/lock.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
#include "content/app/content_service_manager_main_delegate.h"
#include "content/browser/scheduler/browser_task_executor.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_switches.h"
#include "services/service_manager/embedder/main.h"
#if defined(OS_WIN)
#include <Objbase.h>
#include <windows.h>
#include "content/public/app/sandbox_helper_win.h"
#include "sandbox/win/src/sandbox_types.h"
#endif
#if defined(OS_MACOSX) || defined(OS_WIN)
#include "components/crash/core/app/crash_switches.h"
#include "third_party/crashpad/crashpad/handler/handler_main.h"
#endif
namespace {
#if defined(OS_MACOSX) || defined(OS_WIN)
// Based on components/crash/core/app/run_as_crashpad_handler_win.cc
// Remove the "--type=crashpad-handler" command-line flag that will otherwise
// confuse the crashpad handler.
// Chrome uses an embedded crashpad handler on Windows only and imports this
// function via the existing "run_as_crashpad_handler" target defined in
// components/crash/core/app/BUILD.gn. CEF uses an embedded handler on both
// Windows and macOS so we define the function here instead of using the
// existing target (because we can't use that target on macOS).
int RunAsCrashpadHandler(const base::CommandLine& command_line) {
base::CommandLine::StringVector argv = command_line.argv();
const base::CommandLine::StringType process_type =
FILE_PATH_LITERAL("--type=");
argv.erase(
std::remove_if(argv.begin(), argv.end(),
[&process_type](const base::CommandLine::StringType& str) {
return base::StartsWith(str, process_type,
base::CompareCase::SENSITIVE) ||
(!str.empty() && str[0] == L'/');
}),
argv.end());
#if defined(OS_MACOSX)
// HandlerMain on macOS uses the system version of getopt_long which expects
// the first argument to be the program name.
argv.insert(argv.begin(), command_line.GetProgram().value());
#endif
std::unique_ptr<char*[]> argv_as_utf8(new char*[argv.size() + 1]);
std::vector<std::string> storage;
storage.reserve(argv.size());
for (size_t i = 0; i < argv.size(); ++i) {
#if defined(OS_WIN)
storage.push_back(base::UTF16ToUTF8(argv[i]));
#else
storage.push_back(argv[i]);
#endif
argv_as_utf8[i] = &storage[i][0];
}
argv_as_utf8[argv.size()] = nullptr;
argv.clear();
return crashpad::HandlerMain(static_cast<int>(storage.size()),
argv_as_utf8.get(), nullptr);
}
#endif // defined(OS_MACOSX) || defined(OS_WIN)
} // namespace
// Used to run the UI on a separate thread.
class CefUIThread : public base::PlatformThread::Delegate {
public:
explicit CefUIThread(base::OnceClosure setup_callback)
: setup_callback_(std::move(setup_callback)) {}
~CefUIThread() override { Stop(); }
void Start() {
base::AutoLock lock(thread_lock_);
bool success = base::PlatformThread::CreateWithPriority(
0, this, &thread_, base::ThreadPriority::NORMAL);
if (!success) {
LOG(FATAL) << "failed to UI create thread";
}
}
void Stop() {
base::AutoLock lock(thread_lock_);
if (!stopping_) {
stopping_ = true;
CEF_POST_TASK(CEF_UIT, base::BindOnce(&CefUIThread::ThreadQuitHelper,
base::Unretained(this)));
}
// Can't join if the |thread_| is either already gone or is non-joinable.
if (thread_.is_null())
return;
base::PlatformThread::Join(thread_);
thread_ = base::PlatformThreadHandle();
stopping_ = false;
}
bool WaitUntilThreadStarted() const {
DCHECK(owning_sequence_checker_.CalledOnValidSequence());
start_event_.Wait();
return true;
}
void InitializeBrowserRunner(
const content::MainFunctionParams& main_function_params) {
// Use our own browser process runner.
browser_runner_ = content::BrowserMainRunner::Create();
// Initialize browser process state. Uses the current thread's message loop.
int exit_code = browser_runner_->Initialize(main_function_params);
CHECK_EQ(exit_code, -1);
}
protected:
void ThreadMain() override {
base::PlatformThread::SetName("CefUIThread");
#if defined(OS_WIN)
// Initializes the COM library on the current thread.
CoInitialize(nullptr);
#endif
start_event_.Signal();
std::move(setup_callback_).Run();
base::RunLoop run_loop;
run_loop_ = &run_loop;
run_loop.Run();
browser_runner_->Shutdown();
browser_runner_.reset(nullptr);
content::BrowserTaskExecutor::Shutdown();
// Run exit callbacks on the UI thread to avoid sequence check failures.
base::AtExitManager::ProcessCallbacksNow();
#if defined(OS_WIN)
// Closes the COM library on the current thread. CoInitialize must
// be balanced by a corresponding call to CoUninitialize.
CoUninitialize();
#endif
run_loop_ = nullptr;
}
void ThreadQuitHelper() {
DCHECK(run_loop_);
run_loop_->QuitWhenIdle();
}
std::unique_ptr<content::BrowserMainRunner> browser_runner_;
base::OnceClosure setup_callback_;
bool stopping_ = false;
// The thread's handle.
base::PlatformThreadHandle thread_;
mutable base::Lock thread_lock_; // Protects |thread_|.
base::RunLoop* run_loop_ = nullptr;
mutable base::WaitableEvent start_event_;
// This class is not thread-safe, use this to verify access from the owning
// sequence of the Thread.
base::SequenceChecker owning_sequence_checker_;
};
CefMainRunner::CefMainRunner(bool multi_threaded_message_loop,
bool external_message_pump)
: multi_threaded_message_loop_(multi_threaded_message_loop),
external_message_pump_(external_message_pump) {}
CefMainRunner::~CefMainRunner() = default;
bool CefMainRunner::Initialize(CefSettings* settings,
CefRefPtr<CefApp> application,
const CefMainArgs& args,
void* windows_sandbox_info,
bool* initialized,
base::OnceClosure context_initialized) {
CefRuntimeInitialize(settings, application);
const int exit_code =
ContentMainInitialize(args, windows_sandbox_info, &settings->no_sandbox);
if (exit_code >= 0) {
NOTREACHED() << "ContentMainInitialize failed";
return false;
}
if (!ContentMainRun(initialized, std::move(context_initialized))) {
NOTREACHED() << "ContentMainRun failed";
return false;
}
return true;
}
void CefMainRunner::Shutdown(base::OnceClosure shutdown_on_ui_thread,
base::OnceClosure finalize_shutdown) {
if (multi_threaded_message_loop_) {
// Events that will be used to signal when shutdown is complete. Start in
// non-signaled mode so that the event will block.
base::WaitableEvent uithread_shutdown_event(
base::WaitableEvent::ResetPolicy::AUTOMATIC,
base::WaitableEvent::InitialState::NOT_SIGNALED);
// Finish shutdown on the UI thread.
CEF_POST_TASK(
CEF_UIT,
base::BindOnce(&CefMainRunner::FinishShutdownOnUIThread,
base::Unretained(this), std::move(shutdown_on_ui_thread),
&uithread_shutdown_event));
/// Block until UI thread shutdown is complete.
uithread_shutdown_event.Wait();
FinalizeShutdown(std::move(finalize_shutdown));
} else {
// Finish shutdown on the current thread, which should be the UI thread.
FinishShutdownOnUIThread(std::move(shutdown_on_ui_thread), nullptr);
FinalizeShutdown(std::move(finalize_shutdown));
}
}
// static
int CefMainRunner::RunAsHelperProcess(const CefMainArgs& args,
CefRefPtr<CefApp> application,
void* windows_sandbox_info) {
base::CommandLine command_line(base::CommandLine::NO_PROGRAM);
#if defined(OS_WIN)
command_line.ParseFromString(::GetCommandLineW());
#else
command_line.InitFromArgv(args.argc, args.argv);
#endif
// Wait for the debugger as early in process initialization as possible.
if (command_line.HasSwitch(switches::kWaitForDebugger))
base::debug::WaitForDebugger(60, true);
// If no process type is specified then it represents the browser process and
// we do nothing.
const std::string& process_type =
command_line.GetSwitchValueASCII(switches::kProcessType);
if (process_type.empty())
return -1;
#if defined(OS_MACOSX) || defined(OS_WIN)
if (process_type == crash_reporter::switches::kCrashpadHandler)
return RunAsCrashpadHandler(command_line);
#endif
std::unique_ptr<content::ContentMainDelegate> main_delegate;
main_delegate.reset(new CefMainDelegate(/*context=*/nullptr,
/*settings=*/nullptr, application));
// Execute the secondary process.
#if defined(OS_WIN)
sandbox::SandboxInterfaceInfo sandbox_info = {0};
if (windows_sandbox_info == nullptr) {
content::InitializeSandboxInfo(&sandbox_info);
windows_sandbox_info = &sandbox_info;
}
content::ContentMainParams params(main_delegate.get());
params.instance = args.instance;
params.sandbox_info =
static_cast<sandbox::SandboxInterfaceInfo*>(windows_sandbox_info);
return content::ContentMain(params);
#else
content::ContentMainParams params(main_delegate.get());
params.argc = args.argc;
params.argv = const_cast<const char**>(args.argv);
return content::ContentMain(params);
#endif
}
void CefMainRunner::CefRuntimeInitialize(CefSettings* settings,
CefRefPtr<CefApp> app) {
DCHECK_EQ(RuntimeType::UNINITIALIZED, runtime_type_);
DCHECK(!main_delegate_);
runtime_type_ = RuntimeType::CEF;
CefMainDelegate::CefInitialize();
main_delegate_.reset(new CefMainDelegate(this, settings, app));
}
int CefMainRunner::ContentMainInitialize(const CefMainArgs& args,
void* windows_sandbox_info,
int* no_sandbox) {
DCHECK(main_delegate_);
// Initialize the content runner.
content::ContentMainParams params(main_delegate_.get());
#if defined(OS_WIN)
sandbox::SandboxInterfaceInfo sandbox_info = {0};
if (windows_sandbox_info == nullptr) {
windows_sandbox_info = &sandbox_info;
*no_sandbox = true;
}
params.instance = args.instance;
params.sandbox_info =
static_cast<sandbox::SandboxInterfaceInfo*>(windows_sandbox_info);
#else
params.argc = args.argc;
params.argv = const_cast<const char**>(args.argv);
#endif
sm_main_delegate_.reset(
new content::ContentServiceManagerMainDelegate(params));
sm_main_params_.reset(
new service_manager::MainParams(sm_main_delegate_.get()));
#if defined(OS_POSIX) && !defined(OS_ANDROID)
sm_main_params_->argc = params.argc;
sm_main_params_->argv = params.argv;
#endif
return service_manager::MainInitialize(*sm_main_params_);
}
bool CefMainRunner::ContentMainRun(bool* initialized,
base::OnceClosure context_initialized) {
if (IsCefRuntime())
CefMainDelegate::MainThreadInitialize();
if (multi_threaded_message_loop_) {
base::WaitableEvent uithread_startup_event(
base::WaitableEvent::ResetPolicy::AUTOMATIC,
base::WaitableEvent::InitialState::NOT_SIGNALED);
if (!CreateUIThread(base::BindOnce(
[](CefMainRunner* runner, base::WaitableEvent* event) {
service_manager::MainRun(*runner->sm_main_params_);
event->Signal();
},
base::Unretained(this),
base::Unretained(&uithread_startup_event)))) {
return false;
}
*initialized = true;
// We need to wait until service_manager::MainRun has finished.
uithread_startup_event.Wait();
} else {
*initialized = true;
service_manager::MainRun(*sm_main_params_);
}
if (CEF_CURRENTLY_ON_UIT()) {
OnContextInitialized(std::move(context_initialized));
} else {
// Continue initialization on the UI thread.
CEF_POST_TASK(CEF_UIT, base::BindOnce(&CefMainRunner::OnContextInitialized,
base::Unretained(this),
std::move(context_initialized)));
}
return true;
}
void CefMainRunner::PreCreateMainMessageLoop() {
if (external_message_pump_) {
InitExternalMessagePumpFactoryForUI();
}
}
int CefMainRunner::RunMainProcess(
const content::MainFunctionParams& main_function_params) {
if (!multi_threaded_message_loop_) {
// Use our own browser process runner.
browser_runner_ = content::BrowserMainRunner::Create();
// Initialize browser process state. Results in a call to
// CefBrowserMain::PreMainMessageLoopStart() which creates the UI message
// loop.
int exit_code = browser_runner_->Initialize(main_function_params);
if (exit_code >= 0)
return exit_code;
} else {
// Running on the separate UI thread.
DCHECK(ui_thread_);
ui_thread_->InitializeBrowserRunner(main_function_params);
}
return 0;
}
bool CefMainRunner::CreateUIThread(base::OnceClosure setup_callback) {
DCHECK(!ui_thread_);
ui_thread_.reset(new CefUIThread(std::move(setup_callback)));
ui_thread_->Start();
ui_thread_->WaitUntilThreadStarted();
if (external_message_pump_) {
InitExternalMessagePumpFactoryForUI();
}
return true;
}
void CefMainRunner::OnContextInitialized(
base::OnceClosure context_initialized) {
CEF_REQUIRE_UIT();
if (IsCefRuntime())
CefMainDelegate::UIThreadInitialize();
std::move(context_initialized).Run();
}
void CefMainRunner::FinishShutdownOnUIThread(
base::OnceClosure shutdown_on_ui_thread,
base::WaitableEvent* uithread_shutdown_event) {
CEF_REQUIRE_UIT();
sm_main_delegate_->ShutdownOnUIThread();
std::move(shutdown_on_ui_thread).Run();
if (IsCefRuntime())
CefMainDelegate::UIThreadShutdown();
if (uithread_shutdown_event)
uithread_shutdown_event->Signal();
}
void CefMainRunner::FinalizeShutdown(base::OnceClosure finalize_shutdown) {
if (content::RenderProcessHost::run_renderer_in_process() && IsCefRuntime()) {
// Blocks until RenderProcess cleanup is complete.
CefContentRendererClient::Get()->RunSingleProcessCleanup();
}
if (browser_runner_.get()) {
browser_runner_->Shutdown();
browser_runner_.reset(nullptr);
}
if (ui_thread_.get()) {
// Blocks until the thread has stopped.
ui_thread_->Stop();
ui_thread_.reset();
}
// Shut down the content runner.
service_manager::MainShutdown(*sm_main_params_);
sm_main_params_.reset(nullptr);
sm_main_delegate_.reset(nullptr);
std::move(finalize_shutdown).Run();
if (IsCefRuntime())
CefMainDelegate::MainThreadShutdown();
main_delegate_.reset(nullptr);
runtime_type_ = RuntimeType::UNINITIALIZED;
}

103
libcef/browser/main_runner.h Normal file
View File

@ -0,0 +1,103 @@
// Copyright 2020 The Chromium Embedded Framework Authors.
// Portions copyright 2014 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.
#ifndef CEF_LIBCEF_BROWSER_MAIN_RUNNER_H_
#define CEF_LIBCEF_BROWSER_MAIN_RUNNER_H_
#pragma once
#include "libcef/common/main_delegate.h"
#include "base/callback_forward.h"
#include "base/macros.h"
#include "content/public/browser/browser_main_runner.h"
namespace base {
class WaitableEvent;
}
namespace content {
class ContentMainDelegate;
class ContentServiceManagerMainDelegate;
struct MainFunctionParams;
} // namespace content
namespace service_manager {
struct MainParams;
}
class CefUIThread;
// Manages the main process lifespan and related objects.
class CefMainRunner : public CefMainDelegate::Runner {
public:
CefMainRunner(bool multi_threaded_message_loop, bool external_message_pump);
~CefMainRunner();
// Called from CefContext::Initialize.
bool Initialize(CefSettings* settings,
CefRefPtr<CefApp> application,
const CefMainArgs& args,
void* windows_sandbox_info,
bool* initialized,
base::OnceClosure context_initialized);
// Called from CefContext::Shutdown.
void Shutdown(base::OnceClosure shutdown_on_ui_thread,
base::OnceClosure finalize_shutdown);
bool IsCefRuntime() const { return runtime_type_ == RuntimeType::CEF; }
// Called from CefExecuteProcess.
static int RunAsHelperProcess(const CefMainArgs& args,
CefRefPtr<CefApp> application,
void* windows_sandbox_info);
private:
// Called from Initialize().
void CefRuntimeInitialize(CefSettings* settings, CefRefPtr<CefApp> app);
int ContentMainInitialize(const CefMainArgs& args,
void* windows_sandbox_info,
int* no_sandbox);
bool ContentMainRun(bool* initialized, base::OnceClosure context_initialized);
// CefMainDelegate::Runner methods:
void PreCreateMainMessageLoop() override;
int RunMainProcess(
const content::MainFunctionParams& main_function_params) override;
// Create the UI thread when running with multi-threaded message loop mode.
bool CreateUIThread(base::OnceClosure setup_callback);
// Called on the UI thread after the context is initialized.
void OnContextInitialized(base::OnceClosure context_initialized);
// Performs shutdown actions that need to occur on the UI thread before any
// threads are destroyed.
void FinishShutdownOnUIThread(base::OnceClosure shutdown_on_ui_thread,
base::WaitableEvent* uithread_shutdown_event);
// Destroys the runtime and related objects.
void FinalizeShutdown(base::OnceClosure finalize_shutdown);
const bool multi_threaded_message_loop_;
const bool external_message_pump_;
enum class RuntimeType {
UNINITIALIZED,
CEF,
};
RuntimeType runtime_type_ = RuntimeType::UNINITIALIZED;
std::unique_ptr<content::ContentMainDelegate> main_delegate_;
std::unique_ptr<content::ContentServiceManagerMainDelegate> sm_main_delegate_;
std::unique_ptr<service_manager::MainParams> sm_main_params_;
std::unique_ptr<content::BrowserMainRunner> browser_runner_;
std::unique_ptr<CefUIThread> ui_thread_;
DISALLOW_COPY_AND_ASSIGN(CefMainRunner);
};
#endif // CEF_LIBCEF_BROWSER_MAIN_RUNNER_H_

265
libcef/common/main_delegate.cc
View File

@ -8,27 +8,24 @@
#include <dlfcn.h>
#endif
#include "libcef/browser/browser_message_loop.h"
#include "libcef/browser/chrome_browser_process_stub.h"
#include "libcef/browser/content_browser_client.h"
#include "libcef/browser/context.h"
#include "libcef/common/cef_switches.h"
#include "libcef/common/command_line_impl.h"
#include "libcef/common/crash_reporting.h"
#include "libcef/common/extensions/extensions_util.h"
#include "libcef/common/widevine_loader.h"
#include "libcef/renderer/content_renderer_client.h"
#include "base/at_exit.h"
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/files/file_path.h"
#include "base/files/file_util.h"
#include "base/path_service.h"
#include "base/run_loop.h"
#include "base/stl_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/synchronization/waitable_event.h"
#include "base/threading/thread.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/media/router/media_router_feature.h"
#include "chrome/child/pdf_child_init.h"
@ -40,8 +37,6 @@
#include "components/content_settings/core/common/content_settings_pattern.h"
#include "components/viz/common/features.h"
#include "content/browser/browser_process_sub_thread.h"
#include "content/browser/scheduler/browser_task_executor.h"
#include "content/public/browser/browser_main_runner.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/common/content_features.h"
#include "content/public/common/content_switches.h"
@ -67,7 +62,6 @@
#endif
#if defined(OS_WIN)
#include <Objbase.h>
#include "base/win/registry.h"
#endif
@ -245,10 +239,9 @@ bool GetDefaultUserDataDirectory(base::FilePath* result) {
#endif
base::FilePath GetUserDataPath() {
const CefSettings& settings = CefContext::Get()->settings();
if (settings.user_data_path.length > 0)
return base::FilePath(CefString(&settings.user_data_path));
base::FilePath GetUserDataPath(CefSettings* settings) {
if (settings->user_data_path.length > 0)
return base::FilePath(CefString(&settings->user_data_path));
base::FilePath result;
if (GetDefaultUserDataDirectory(&result))
@ -328,117 +321,10 @@ void OverrideAssetPath() {
} // namespace
// Used to run the UI on a separate thread.
class CefUIThread : public base::PlatformThread::Delegate {
public:
explicit CefUIThread(base::OnceClosure setup_callback)
: setup_callback_(std::move(setup_callback)) {}
~CefUIThread() override { Stop(); }
void Start() {
base::AutoLock lock(thread_lock_);
bool success = base::PlatformThread::CreateWithPriority(
0, this, &thread_, base::ThreadPriority::NORMAL);
if (!success) {
LOG(FATAL) << "failed to UI create thread";
}
}
void Stop() {
base::AutoLock lock(thread_lock_);
if (!stopping_) {
stopping_ = true;
base::PostTask(
FROM_HERE, {content::BrowserThread::UI},
base::BindOnce(&CefUIThread::ThreadQuitHelper, Unretained(this)));
}
// Can't join if the |thread_| is either already gone or is non-joinable.
if (thread_.is_null())
return;
base::PlatformThread::Join(thread_);
thread_ = base::PlatformThreadHandle();
stopping_ = false;
}
bool WaitUntilThreadStarted() const {
DCHECK(owning_sequence_checker_.CalledOnValidSequence());
start_event_.Wait();
return true;
}
void InitializeBrowserRunner(
const content::MainFunctionParams& main_function_params) {
// Use our own browser process runner.
browser_runner_ = content::BrowserMainRunner::Create();
// Initialize browser process state. Uses the current thread's message loop.
int exit_code = browser_runner_->Initialize(main_function_params);
CHECK_EQ(exit_code, -1);
}
protected:
void ThreadMain() override {
base::PlatformThread::SetName("CefUIThread");
#if defined(OS_WIN)
// Initializes the COM library on the current thread.
CoInitialize(nullptr);
#endif
start_event_.Signal();
std::move(setup_callback_).Run();
base::RunLoop run_loop;
run_loop_ = &run_loop;
run_loop.Run();
browser_runner_->Shutdown();
browser_runner_.reset(nullptr);
content::BrowserTaskExecutor::Shutdown();
// Run exit callbacks on the UI thread to avoid sequence check failures.
base::AtExitManager::ProcessCallbacksNow();
#if defined(OS_WIN)
// Closes the COM library on the current thread. CoInitialize must
// be balanced by a corresponding call to CoUninitialize.
CoUninitialize();
#endif
run_loop_ = nullptr;
}
void ThreadQuitHelper() {
DCHECK(run_loop_);
run_loop_->QuitWhenIdle();
}
std::unique_ptr<content::BrowserMainRunner> browser_runner_;
base::OnceClosure setup_callback_;
bool stopping_ = false;
// The thread's handle.
base::PlatformThreadHandle thread_;
mutable base::Lock thread_lock_; // Protects |thread_|.
base::RunLoop* run_loop_ = nullptr;
mutable base::WaitableEvent start_event_;
// This class is not thread-safe, use this to verify access from the owning
// sequence of the Thread.
base::SequenceChecker owning_sequence_checker_;
};
CefMainDelegate::CefMainDelegate(CefRefPtr<CefApp> application)
: content_client_(application) {
CefMainDelegate::CefMainDelegate(Runner* runner,
CefSettings* settings,
CefRefPtr<CefApp> application)
: runner_(runner), settings_(settings), content_client_(application) {
// Necessary so that exported functions from base_impl.cc will be included
// in the binary.
extern void base_impl_stub();
@ -452,7 +338,7 @@ CefMainDelegate::CefMainDelegate(CefRefPtr<CefApp> application)
CefMainDelegate::~CefMainDelegate() {}
void CefMainDelegate::PreCreateMainMessageLoop() {
InitMessagePumpFactoryForUI();
runner_->PreCreateMainMessageLoop();
}
bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
@ -468,9 +354,7 @@ bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
if (process_type.empty()) {
// In the browser process. Populate the global command-line object.
const CefSettings& settings = CefContext::Get()->settings();
if (settings.command_line_args_disabled) {
if (settings_->command_line_args_disabled) {
// Remove any existing command-line arguments.
base::CommandLine::StringVector argv;
argv.push_back(command_line->GetProgram().value());
@ -480,11 +364,11 @@ bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
const_cast<base::CommandLine::SwitchMap*>(&map)->clear();
}
bool no_sandbox = settings.no_sandbox ? true : false;
bool no_sandbox = settings_->no_sandbox ? true : false;
if (settings.browser_subprocess_path.length > 0) {
if (settings_->browser_subprocess_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.browser_subprocess_path));
base::FilePath(CefString(&settings_->browser_subprocess_path));
if (!file_path.empty()) {
command_line->AppendSwitchPath(switches::kBrowserSubprocessPath,
file_path);
@ -498,16 +382,16 @@ bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
}
#if defined(OS_MACOSX)
if (settings.framework_dir_path.length > 0) {
if (settings_->framework_dir_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.framework_dir_path));
base::FilePath(CefString(&settings_->framework_dir_path));
if (!file_path.empty())
command_line->AppendSwitchPath(switches::kFrameworkDirPath, file_path);
}
if (settings.main_bundle_path.length > 0) {
if (settings_->main_bundle_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.main_bundle_path));
base::FilePath(CefString(&settings_->main_bundle_path));
if (!file_path.empty())
command_line->AppendSwitchPath(switches::kMainBundlePath, file_path);
}
@ -516,25 +400,25 @@ bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
if (no_sandbox)
command_line->AppendSwitch(service_manager::switches::kNoSandbox);
if (settings.user_agent.length > 0) {
if (settings_->user_agent.length > 0) {
command_line->AppendSwitchASCII(switches::kUserAgent,
CefString(&settings.user_agent));
} else if (settings.product_version.length > 0) {
CefString(&settings_->user_agent));
} else if (settings_->product_version.length > 0) {
command_line->AppendSwitchASCII(switches::kProductVersion,
CefString(&settings.product_version));
CefString(&settings_->product_version));
}
if (settings.locale.length > 0) {
if (settings_->locale.length > 0) {
command_line->AppendSwitchASCII(switches::kLang,
CefString(&settings.locale));
CefString(&settings_->locale));
} else if (!command_line->HasSwitch(switches::kLang)) {
command_line->AppendSwitchASCII(switches::kLang, "en-US");
}
base::FilePath log_file;
bool has_log_file_cmdline = false;
if (settings.log_file.length > 0)
log_file = base::FilePath(CefString(&settings.log_file));
if (settings_->log_file.length > 0)
log_file = base::FilePath(CefString(&settings_->log_file));
if (log_file.empty() && command_line->HasSwitch(switches::kLogFile)) {
log_file = command_line->GetSwitchValuePath(switches::kLogFile);
if (!log_file.empty())
@ -546,9 +430,9 @@ bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
if (!has_log_file_cmdline)
command_line->AppendSwitchPath(switches::kLogFile, log_file);
if (settings.log_severity != LOGSEVERITY_DEFAULT) {
if (settings_->log_severity != LOGSEVERITY_DEFAULT) {
std::string log_severity;
switch (settings.log_severity) {
switch (settings_->log_severity) {
case LOGSEVERITY_VERBOSE:
log_severity = switches::kLogSeverity_Verbose;
break;
@ -574,42 +458,42 @@ bool CefMainDelegate::BasicStartupComplete(int* exit_code) {
command_line->AppendSwitchASCII(switches::kLogSeverity, log_severity);
}
if (settings.javascript_flags.length > 0) {
if (settings_->javascript_flags.length > 0) {
command_line->AppendSwitchASCII(switches::kJavaScriptFlags,
CefString(&settings.javascript_flags));
CefString(&settings_->javascript_flags));
}
if (settings.pack_loading_disabled) {
if (settings_->pack_loading_disabled) {
command_line->AppendSwitch(switches::kDisablePackLoading);
} else {
if (settings.resources_dir_path.length > 0) {
if (settings_->resources_dir_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.resources_dir_path));
base::FilePath(CefString(&settings_->resources_dir_path));
if (!file_path.empty()) {
command_line->AppendSwitchPath(switches::kResourcesDirPath,
file_path);
}
}
if (settings.locales_dir_path.length > 0) {
if (settings_->locales_dir_path.length > 0) {
base::FilePath file_path =
base::FilePath(CefString(&settings.locales_dir_path));
base::FilePath(CefString(&settings_->locales_dir_path));
if (!file_path.empty())
command_line->AppendSwitchPath(switches::kLocalesDirPath, file_path);
}
}
if (settings.remote_debugging_port >= 1024 &&
settings.remote_debugging_port <= 65535) {
if (settings_->remote_debugging_port >= 1024 &&
settings_->remote_debugging_port <= 65535) {
command_line->AppendSwitchASCII(
switches::kRemoteDebuggingPort,
base::NumberToString(settings.remote_debugging_port));
base::NumberToString(settings_->remote_debugging_port));
}
if (settings.uncaught_exception_stack_size > 0) {
if (settings_->uncaught_exception_stack_size > 0) {
command_line->AppendSwitchASCII(
switches::kUncaughtExceptionStackSize,
base::NumberToString(settings.uncaught_exception_stack_size));
base::NumberToString(settings_->uncaught_exception_stack_size));
}
std::vector<std::string> disable_features;
@ -765,7 +649,7 @@ void CefMainDelegate::PreSandboxStartup() {
dir_default_download_safe);
}
const base::FilePath& user_data_path = GetUserDataPath();
const base::FilePath& user_data_path = GetUserDataPath(settings_);
base::PathService::Override(chrome::DIR_USER_DATA, user_data_path);
// Path used for crash dumps.
@ -800,40 +684,12 @@ int CefMainDelegate::RunProcess(
const std::string& process_type,
const content::MainFunctionParams& main_function_params) {
if (process_type.empty()) {
const CefSettings& settings = CefContext::Get()->settings();
if (!settings.multi_threaded_message_loop) {
// Use our own browser process runner.
browser_runner_ = content::BrowserMainRunner::Create();
// Initialize browser process state. Results in a call to
// CefBrowserMain::PreMainMessageLoopStart() which creates the UI message
// loop.
int exit_code = browser_runner_->Initialize(main_function_params);
if (exit_code >= 0)
return exit_code;
} else {
// Running on the separate UI thread.
DCHECK(ui_thread_);
ui_thread_->InitializeBrowserRunner(main_function_params);
}
return 0;
return runner_->RunMainProcess(main_function_params);
}
return -1;
}
bool CefMainDelegate::CreateUIThread(base::OnceClosure setup_callback) {
DCHECK(!ui_thread_);
ui_thread_.reset(new CefUIThread(std::move(setup_callback)));
ui_thread_->Start();
ui_thread_->WaitUntilThreadStarted();
InitMessagePumpFactoryForUI();
return true;
}
void CefMainDelegate::ProcessExiting(const std::string& process_type) {
ui::ResourceBundle::CleanupSharedInstance();
}
@ -863,17 +719,38 @@ content::ContentUtilityClient* CefMainDelegate::CreateContentUtilityClient() {
return utility_client_.get();
}
void CefMainDelegate::ShutdownBrowser() {
if (browser_runner_.get()) {
browser_runner_->Shutdown();
browser_runner_.reset(nullptr);
// static
void CefMainDelegate::CefInitialize() {
g_browser_process = new ChromeBrowserProcessStub();
}
if (ui_thread_.get()) {
// Blocks until the thread has stopped.
ui_thread_->Stop();
ui_thread_.reset();
// static
void CefMainDelegate::MainThreadInitialize() {
static_cast<ChromeBrowserProcessStub*>(g_browser_process)->Initialize();
}
// static
void CefMainDelegate::UIThreadInitialize() {
#if BUILDFLAG(ENABLE_WIDEVINE) && BUILDFLAG(ENABLE_LIBRARY_CDMS)
CefWidevineLoader::GetInstance()->OnContextInitialized();
#endif
static_cast<ChromeBrowserProcessStub*>(g_browser_process)
->OnContextInitialized();
}
// static
void CefMainDelegate::UIThreadShutdown() {
static_cast<ChromeBrowserProcessStub*>(g_browser_process)
->CleanupOnUIThread();
ui::ResourceBundle::GetSharedInstance().CleanupOnUIThread();
}
// static
void CefMainDelegate::MainThreadShutdown() {
delete g_browser_process;
g_browser_process = nullptr;
}
void CefMainDelegate::InitializeResourceBundle() {

41
libcef/common/main_delegate.h
View File

@ -16,22 +16,30 @@
namespace base {
class CommandLine;
class MessageLoop;
class Thread;
} // namespace base
namespace content {
class BrowserMainRunner;
}
class CefContentBrowserClient;
class CefContentRendererClient;
class CefUIThread;
class ChromeContentUtilityClient;
// Manages state specific to the CEF runtime.
class CefMainDelegate : public content::ContentMainDelegate {
public:
explicit CefMainDelegate(CefRefPtr<CefApp> application);
class Runner {
public:
virtual void PreCreateMainMessageLoop() = 0;
virtual int RunMainProcess(
const content::MainFunctionParams& main_function_params) = 0;
protected:
virtual ~Runner() {}
};
// |runner| and |settings| will be non-nullptr for the main process only,
// and will outlive this object.
CefMainDelegate(Runner* runner,
CefSettings* settings,
CefRefPtr<CefApp> application);
~CefMainDelegate() override;
void PreCreateMainMessageLoop() override;
@ -49,19 +57,22 @@ class CefMainDelegate : public content::ContentMainDelegate {
content::ContentRendererClient* CreateContentRendererClient() override;
content::ContentUtilityClient* CreateContentUtilityClient() override;
bool CreateUIThread(base::OnceClosure setup_callback);
// Shut down the browser runner.
void ShutdownBrowser();
CefContentBrowserClient* browser_client() { return browser_client_.get(); }
CefContentClient* content_client() { return &content_client_; }
// Called from MainRunner at various initialization/shutdown stages to create
// and clean up global state.
static void CefInitialize();
static void MainThreadInitialize();
static void UIThreadInitialize();
static void UIThreadShutdown();
static void MainThreadShutdown();
private:
void InitializeResourceBundle();
std::unique_ptr<content::BrowserMainRunner> browser_runner_;
std::unique_ptr<CefUIThread> ui_thread_;
Runner* const runner_;
CefSettings* const settings_;
std::unique_ptr<CefContentBrowserClient> browser_client_;
std::unique_ptr<CefContentRendererClient> renderer_client_;