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// 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 "base/base_switches.h"
#include "base/command_line.h"
#include "base/debug/debugger.h"
#include "base/debug/trace_event.h"
#include "base/hi_res_timer_manager.h"
#include "base/i18n/rtl.h"
#include "base/memory/ref_counted.h"
#include "base/metrics/field_trial.h"
#include "base/message_loop.h"
#include "base/metrics/histogram.h"
#include "base/metrics/stats_counters.h"
#include "base/path_service.h"
#include "base/process_util.h"
#include "base/string_util.h"
#include "base/system_monitor/system_monitor.h"
#include "base/threading/platform_thread.h"
#include "base/time.h"
#include "content/common/pepper_plugin_registry.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/main_function_params.h"
#include "content/public/renderer/content_renderer_client.h"
#include "content/renderer/render_process_impl.h"
#include "content/renderer/render_thread_impl.h"
#include "content/renderer/renderer_main_platform_delegate.h"
#include "ui/base/ui_base_switches.h"
#include "webkit/plugins/ppapi/ppapi_interface_factory.h"
#if defined(OS_MACOSX)
#include <Carbon/Carbon.h>
#include <signal.h>
#include <unistd.h>
#include "base/mac/mac_util.h"
#include "base/mac/scoped_nsautorelease_pool.h"
#include "third_party/mach_override/mach_override.h"
#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
#endif // OS_MACOSX
namespace {
#if defined(OS_MACOSX)
CFArrayRef ChromeTISCreateInputSourceList(
CFDictionaryRef properties,
Boolean includeAllInstalled) {
CFTypeRef values[] = { CFSTR("") };
return CFArrayCreate(
kCFAllocatorDefault, values, arraysize(values), &kCFTypeArrayCallBacks);
}
void InstallFrameworkHacks() {
// See http://crbug.com/31225
// TODO: Don't do this on newer OS X revisions that have a fix for
// http://openradar.appspot.com/radar?id=1156410
// To check if this is broken:
// 1. Enable Multi language input (simplified chinese)
// 2. Ensure "Show/Hide Trackpad Handwriting" shortcut works.
// (ctrl+shift+space).
// 3. Now open a new tab in Google Chrome or start Google Chrome
// 4. Try ctrl+shift+space shortcut again. Shortcut will not work, IME will
// either not appear or (worse) not disappear on ctrl-shift-space.
// (Run `ps aux | grep Chinese` (10.6/10.7) or `ps aux | grep Trackpad`
// and then kill that pid to make it go away.)
// Chinese Handwriting was introduced in 10.6 and is confirmed broken on
// 10.6, 10.7, and 10.8.
mach_error_t err = mach_override_ptr(
(void*)&TISCreateInputSourceList,
(void*)&ChromeTISCreateInputSourceList,
NULL);
CHECK_EQ(err_none, err);
}
#endif // OS_MACOSX
} // namespace
// This function provides some ways to test crash and assertion handling
// behavior of the renderer.
static void HandleRendererErrorTestParameters(const CommandLine& command_line) {
if (command_line.HasSwitch(switches::kWaitForDebugger))
base::debug::WaitForDebugger(60, true);
if (command_line.HasSwitch(switches::kRendererStartupDialog))
ChildProcess::WaitForDebugger("Renderer");
// This parameter causes an assertion.
if (command_line.HasSwitch(switches::kRendererAssertTest)) {
DCHECK(false);
}
}
// This is a simplified version of the browser Jankometer, which measures
// the processing time of tasks on the render thread.
class RendererMessageLoopObserver : public MessageLoop::TaskObserver {
public:
RendererMessageLoopObserver()
: process_times_(base::Histogram::FactoryGet(
"Chrome.ProcMsgL RenderThread",
1, 3600000, 50, base::Histogram::kUmaTargetedHistogramFlag)) {}
virtual ~RendererMessageLoopObserver() {}
virtual void WillProcessTask(base::TimeTicks time_posted) {
begin_process_message_ = base::TimeTicks::Now();
}
virtual void DidProcessTask(base::TimeTicks time_posted) {
if (!begin_process_message_.is_null())
process_times_->AddTime(base::TimeTicks::Now() - begin_process_message_);
}
private:
base::TimeTicks begin_process_message_;
base::Histogram* const process_times_;
DISALLOW_COPY_AND_ASSIGN(RendererMessageLoopObserver);
};
// mainline routine for running as the Renderer process
int RendererMain(const content::MainFunctionParams& parameters) {
TRACE_EVENT_BEGIN_ETW("RendererMain", 0, "");
const CommandLine& parsed_command_line = parameters.command_line;
#if defined(OS_MACOSX)
base::mac::ScopedNSAutoreleasePool* pool = parameters.autorelease_pool;
InstallFrameworkHacks();
#endif // OS_MACOSX
#if defined(OS_CHROMEOS)
// As Zygote process starts up earlier than browser process gets its own
// locale (at login time for Chrome OS), we have to set the ICU default
// locale for renderer process here.
// ICU locale will be used for fallback font selection etc.
if (parsed_command_line.HasSwitch(switches::kLang)) {
const std::string locale =
parsed_command_line.GetSwitchValueASCII(switches::kLang);
base::i18n::SetICUDefaultLocale(locale);
}
#endif
// This function allows pausing execution using the --renderer-startup-dialog
// flag allowing us to attach a debugger.
// Do not move this function down since that would mean we can't easily debug
// whatever occurs before it.
HandleRendererErrorTestParameters(parsed_command_line);
RendererMainPlatformDelegate platform(parameters);
webkit::ppapi::PpapiInterfaceFactoryManager* factory_manager =
webkit::ppapi::PpapiInterfaceFactoryManager::GetInstance();
content::GetContentClient()->renderer()->RegisterPPAPIInterfaceFactories(
factory_manager);
base::StatsCounterTimer stats_counter_timer("Content.RendererInit");
base::StatsScope<base::StatsCounterTimer> startup_timer(stats_counter_timer);
RendererMessageLoopObserver task_observer;
#if defined(OS_MACOSX)
// As long as we use Cocoa in the renderer (for the forseeable future as of
// now; see http://crbug.com/13890 for info) we need to have a UI loop.
MessageLoop main_message_loop(MessageLoop::TYPE_UI);
#else
// The main message loop of the renderer services doesn't have IO or UI tasks,
// unless in-process-plugins is used.
MessageLoop main_message_loop(RenderProcessImpl::InProcessPlugins() ?
MessageLoop::TYPE_UI : MessageLoop::TYPE_DEFAULT);
#endif
main_message_loop.AddTaskObserver(&task_observer);
base::PlatformThread::SetName("CrRendererMain");
base::SystemMonitor system_monitor;
HighResolutionTimerManager hi_res_timer_manager;
platform.PlatformInitialize();
bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);
platform.InitSandboxTests(no_sandbox);
// Initialize statistical testing infrastructure. We set client_id to the
// empty string to disallow the renderer process from creating its own
// one-time randomized trials; they should be created in the browser process.
base::FieldTrialList field_trial(EmptyString());
// Ensure any field trials in browser are reflected into renderer.
if (parsed_command_line.HasSwitch(switches::kForceFieldTrials)) {
std::string persistent = parsed_command_line.GetSwitchValueASCII(
switches::kForceFieldTrials);
bool ret = base::FieldTrialList::CreateTrialsFromString(persistent);
DCHECK(ret);
}
// Load pepper plugins before engaging the sandbox.
PepperPluginRegistry::GetInstance();
{
#if defined(OS_WIN) || defined(OS_MACOSX)
// TODO(markus): Check if it is OK to unconditionally move this
// instruction down.
RenderProcessImpl render_process;
new RenderThreadImpl();
#endif
bool run_loop = true;
if (!no_sandbox) {
run_loop = platform.EnableSandbox();
} else {
LOG(ERROR) << "Running without renderer sandbox";
}
#if defined(OS_POSIX) && !defined(OS_MACOSX)
RenderProcessImpl render_process;
new RenderThreadImpl();
#endif
platform.RunSandboxTests();
startup_timer.Stop(); // End of Startup Time Measurement.
if (run_loop) {
#if defined(OS_MACOSX)
if (pool)
pool->Recycle();
#endif
TRACE_EVENT_BEGIN_ETW("RendererMain.START_MSG_LOOP", 0, 0);
MessageLoop::current()->Run();
TRACE_EVENT_END_ETW("RendererMain.START_MSG_LOOP", 0, 0);
}
}
platform.PlatformUninitialize();
TRACE_EVENT_END_ETW("RendererMain", 0, "");
return 0;
}
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