cef/libcef/browser/context.cc

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// Copyright (c) 2012 The Chromium Embedded Framework 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/context.h"
#include "libcef/browser/browser_context.h"
#include "libcef/browser/browser_host_impl.h"
#include "libcef/browser/browser_info.h"
#include "libcef/browser/browser_main.h"
#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/scheme_handler.h"
#include "libcef/browser/thread_util.h"
#include "libcef/browser/trace_subscriber.h"
#include "libcef/common/main_delegate.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/file_util.h"
#include "base/synchronization/waitable_event.h"
#include "chrome/browser/printing/print_job_manager.h"
#include "content/public/app/content_main.h"
#include "content/public/app/content_main_runner.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 "ui/base/ui_base_switches.h"
#if defined(OS_MACOSX)
#include "libcef/browser/application_mac.h"
#endif
#if defined(OS_WIN)
#include "content/public/app/startup_helper_win.h"
#include "sandbox/win/src/sandbox_types.h"
#endif
namespace {
CefContext* g_context = NULL;
// Force shutdown when the process terminates if a context currently exists and
// CefShutdown() has not been explicitly called.
class CefForceShutdown {
public:
~CefForceShutdown() {
if (g_context) {
g_context->Shutdown();
delete g_context;
g_context = NULL;
}
}
} g_force_shutdown;
} // namespace
int CefExecuteProcess(const CefMainArgs& args,
CefRefPtr<CefApp> application,
void* windows_sandbox_info) {
CommandLine command_line(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)
// Create the CefCrApplication instance.
CefCrApplicationCreate();
#endif
CefMainDelegate main_delegate(application);
// Execute the secondary process.
#if defined(OS_WIN)
sandbox::SandboxInterfaceInfo sandbox_info = {0};
if (windows_sandbox_info == NULL) {
content::InitializeSandboxInfo(&sandbox_info);
windows_sandbox_info = &sandbox_info;
}
return content::ContentMain(args.instance,
static_cast<sandbox::SandboxInterfaceInfo*>(windows_sandbox_info),
&main_delegate);
#else
return content::ContentMain(args.argc, const_cast<const char**>(args.argv),
&main_delegate);
#endif
}
bool CefInitialize(const CefMainArgs& args,
const CefSettings& settings,
CefRefPtr<CefApp> application,
void* windows_sandbox_info) {
// Return true if the global context already exists.
if (g_context)
return true;
if (settings.size != sizeof(cef_settings_t)) {
NOTREACHED() << "invalid CefSettings structure size";
return false;
}
g_browser_process = new ChromeBrowserProcessStub();
// Create the new global context object.
g_context = new CefContext();
// Initialize the global context.
return g_context->Initialize(args, settings, application,
windows_sandbox_info);
}
void CefShutdown() {
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED() << "context not valid";
return;
}
// Must always be called on the same thread as Initialize.
if (!g_context->OnInitThread()) {
NOTREACHED() << "called on invalid thread";
return;
}
// Shut down the global context. This will block until shutdown is complete.
g_context->Shutdown();
// Delete the global context object.
delete g_context;
g_context = NULL;
}
void CefDoMessageLoopWork() {
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED() << "context not valid";
return;
}
// Must always be called on the same thread as Initialize.
if (!g_context->OnInitThread()) {
NOTREACHED() << "called on invalid thread";
return;
}
CefBrowserMessageLoop::current()->DoMessageLoopIteration();
}
void CefRunMessageLoop() {
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED() << "context not valid";
return;
}
// Must always be called on the same thread as Initialize.
if (!g_context->OnInitThread()) {
NOTREACHED() << "called on invalid thread";
return;
}
CefBrowserMessageLoop::current()->RunMessageLoop();
}
void CefQuitMessageLoop() {
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED() << "context not valid";
return;
}
// Must always be called on the same thread as Initialize.
if (!g_context->OnInitThread()) {
NOTREACHED() << "called on invalid thread";
return;
}
CefBrowserMessageLoop::current()->Quit();
}
void CefSetOSModalLoop(bool osModalLoop) {
#if defined(OS_WIN)
// Verify that the context is in a valid state.
if (!CONTEXT_STATE_VALID()) {
NOTREACHED() << "context not valid";
return;
}
if (CEF_CURRENTLY_ON_UIT())
base::MessageLoop::current()->set_os_modal_loop(osModalLoop);
else
CEF_POST_TASK(CEF_UIT, base::Bind(CefSetOSModalLoop, osModalLoop));
#endif // defined(OS_WIN)
}
// CefContext
CefContext::CefContext()
: initialized_(false),
shutting_down_(false),
init_thread_id_(0) {
}
CefContext::~CefContext() {
}
// static
CefContext* CefContext::Get() {
return g_context;
}
bool CefContext::Initialize(const CefMainArgs& args,
const CefSettings& settings,
CefRefPtr<CefApp> application,
void* windows_sandbox_info) {
init_thread_id_ = base::PlatformThread::CurrentId();
settings_ = settings;
cache_path_ = base::FilePath(CefString(&settings.cache_path));
if (!cache_path_.empty() &&
!base::DirectoryExists(cache_path_) &&
!base::CreateDirectory(cache_path_)) {
NOTREACHED() << "The cache_path directory could not be created";
cache_path_ = base::FilePath();
}
if (cache_path_.empty()) {
// Create and use a temporary directory.
if (cache_temp_dir_.CreateUniqueTempDir()) {
cache_path_ = cache_temp_dir_.path();
} else {
NOTREACHED() << "Failed to create temporary cache_path directory";
}
}
#if !defined(OS_WIN)
if (settings.multi_threaded_message_loop) {
NOTIMPLEMENTED() << "multi_threaded_message_loop is not supported.";
return false;
}
#endif
main_delegate_.reset(new CefMainDelegate(application));
main_runner_.reset(content::ContentMainRunner::Create());
int exit_code;
// Initialize the content runner.
#if defined(OS_WIN)
sandbox::SandboxInterfaceInfo sandbox_info = {0};
if (windows_sandbox_info == NULL) {
content::InitializeSandboxInfo(&sandbox_info);
windows_sandbox_info = &sandbox_info;
settings_.no_sandbox = true;
}
exit_code = main_runner_->Initialize(args.instance,
static_cast<sandbox::SandboxInterfaceInfo*>(windows_sandbox_info),
main_delegate_.get());
#else
exit_code = main_runner_->Initialize(args.argc,
const_cast<const char**>(args.argv),
main_delegate_.get());
#endif
DCHECK_LT(exit_code, 0);
if (exit_code >= 0)
return false;
// Run the process. Results in a call to CefMainDelegate::RunProcess() which
// will create the browser runner and message loop without blocking.
exit_code = main_runner_->Run();
initialized_ = true;
if (CEF_CURRENTLY_ON_UIT()) {
OnContextInitialized();
} else {
// Continue initialization on the UI thread.
CEF_POST_TASK(CEF_UIT,
base::Bind(&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(false, false);
// 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(NULL);
FinalizeShutdown();
}
}
bool CefContext::OnInitThread() {
return (base::PlatformThread::CurrentId() == init_thread_id_);
}
CefTraceSubscriber* CefContext::GetTraceSubscriber() {
CEF_REQUIRE_UIT();
if (shutting_down_)
return NULL;
if (!trace_subscriber_.get())
trace_subscriber_.reset(new CefTraceSubscriber());
return trace_subscriber_.get();
}
void CefContext::OnContextInitialized() {
CEF_REQUIRE_UIT();
// Register internal scheme handlers.
scheme::RegisterInternalHandlers();
// Register for notifications.
registrar_.reset(new content::NotificationRegistrar());
registrar_->Add(this, content::NOTIFICATION_RENDERER_PROCESS_TERMINATED,
content::NotificationService::AllBrowserContextsAndSources());
registrar_->Add(this, content::NOTIFICATION_RENDERER_PROCESS_CLOSED,
content::NotificationService::AllBrowserContextsAndSources());
// Must be created after the NotificationService.
print_job_manager_.reset(new printing::PrintJobManager());
// Notify the handler.
CefRefPtr<CefApp> app = CefContentClient::Get()->application();
if (app.get()) {
CefRefPtr<CefBrowserProcessHandler> handler =
app->GetBrowserProcessHandler();
if (handler.get())
handler->OnContextInitialized();
}
}
void CefContext::FinishShutdownOnUIThread(
base::WaitableEvent* uithread_shutdown_event) {
CEF_REQUIRE_UIT();
// Wait for the pending print jobs to finish. Don't do this later, since
// this might cause a nested message loop to run, and we don't want pending
// tasks to run once teardown has started.
print_job_manager_->Shutdown();
print_job_manager_.reset(NULL);
CefContentBrowserClient::Get()->DestroyAllBrowsers();
registrar_.reset();
if (trace_subscriber_.get())
trace_subscriber_.reset(NULL);
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.
main_runner_->Shutdown();
main_runner_.reset(NULL);
main_delegate_.reset(NULL);
}
void CefContext::Observe(
int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) {
DCHECK(type == content::NOTIFICATION_RENDERER_PROCESS_TERMINATED ||
type == content::NOTIFICATION_RENDERER_PROCESS_CLOSED);
content::RenderProcessHost* rph =
content::Source<content::RenderProcessHost>(source).ptr();
DCHECK(rph);
CefContentBrowserClient::Get()->RemoveBrowserContextReference(
static_cast<CefBrowserContext*>(rph->GetBrowserContext()));
}