blob: 9e76e271b65b1a8d91bda4d252f87e50c26d8388 [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 <stddef.h>
#include <utility>
#include "base/base_switches.h"
#include "base/command_line.h"
#include "base/debug/debugger.h"
#include "base/debug/leak_annotations.h"
#include "base/i18n/rtl.h"
#include "base/message_loop/message_loop.h"
#include "base/metrics/histogram_macros.h"
#include "base/pending_task.h"
#include "base/run_loop.h"
#include "base/sampling_heap_profiler/sampling_heap_profiler.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/string_util.h"
#include "base/sys_info.h"
#include "base/threading/platform_thread.h"
#include "base/timer/hi_res_timer_manager.h"
#include "base/trace_event/trace_event.h"
#include "build/build_config.h"
#include "content/common/content_constants_internal.h"
#include "content/common/content_switches_internal.h"
#include "content/common/service_manager/service_manager_connection_impl.h"
#include "content/common/skia_utils.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 "media/media_buildflags.h"
#include "ppapi/buildflags/buildflags.h"
#include "services/service_manager/sandbox/switches.h"
#include "third_party/blink/public/platform/scheduler/web_thread_scheduler.h"
#include "third_party/webrtc_overrides/init_webrtc.h" // nogncheck
#include "ui/base/ui_base_switches.h"
#if defined(OS_ANDROID)
#include "base/android/library_loader/library_loader_hooks.h"
#endif // OS_ANDROID
#if defined(OS_MACOSX)
#include <Carbon/Carbon.h>
#include <signal.h>
#include <unistd.h>
#include "base/mac/scoped_nsautorelease_pool.h"
#include "base/message_loop/message_pump_mac.h"
#include "third_party/blink/public/web/web_view.h"
#endif // OS_MACOSX
#if BUILDFLAG(ENABLE_PLUGINS)
#include "content/renderer/pepper/pepper_plugin_registry.h"
#endif
namespace content {
namespace {
// This function provides some ways to test crash and assertion handling
// behavior of the renderer.
static void HandleRendererErrorTestParameters(
const base::CommandLine& command_line) {
if (command_line.HasSwitch(switches::kWaitForDebugger))
base::debug::WaitForDebugger(60, true);
if (command_line.HasSwitch(switches::kRendererStartupDialog))
WaitForDebugger("Renderer");
}
} // namespace
// mainline routine for running as the Renderer process
int RendererMain(const MainFunctionParams& parameters) {
// Don't use the TRACE_EVENT0 macro because the tracing infrastructure doesn't
// expect synchronous events around the main loop of a thread.
TRACE_EVENT_ASYNC_BEGIN0("startup", "RendererMain", 0);
base::trace_event::TraceLog::GetInstance()->set_process_name("Renderer");
base::trace_event::TraceLog::GetInstance()->SetProcessSortIndex(
kTraceEventRendererProcessSortIndex);
const base::CommandLine& command_line = parameters.command_line;
base::SamplingHeapProfiler::Init();
if (command_line.HasSwitch(switches::kSamplingHeapProfiler)) {
base::SamplingHeapProfiler* profiler = base::SamplingHeapProfiler::Get();
unsigned sampling_interval = 0;
bool parsed = base::StringToUint(
command_line.GetSwitchValueASCII(switches::kSamplingHeapProfiler),
&sampling_interval);
if (parsed && sampling_interval > 0)
profiler->SetSamplingInterval(sampling_interval * 1024);
profiler->Start();
}
#if defined(OS_MACOSX)
base::mac::ScopedNSAutoreleasePool* pool = parameters.autorelease_pool;
#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 (command_line.HasSwitch(switches::kLang)) {
const std::string locale =
command_line.GetSwitchValueASCII(switches::kLang);
base::i18n::SetICUDefaultLocale(locale);
}
#endif
InitializeSkia();
// 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(command_line);
RendererMainPlatformDelegate platform(parameters);
#if defined(OS_MACOSX)
// As long as scrollbars on Mac are painted with Cocoa, the message pump
// needs to be backed by a Foundation-level loop to process NSTimers. See
// http://crbug.com/306348#c24 for details.
std::unique_ptr<base::MessagePump> pump(new base::MessagePumpNSRunLoop());
std::unique_ptr<base::MessageLoop> main_message_loop(
new base::MessageLoop(std::move(pump)));
#else
// The main message loop of the renderer services doesn't have IO or UI tasks.
std::unique_ptr<base::MessageLoop> main_message_loop(new base::MessageLoop());
#endif
base::PlatformThread::SetName("CrRendererMain");
#if defined(OS_ANDROID)
// If we have any pending LibraryLoader histograms, record them.
base::android::RecordLibraryLoaderRendererHistograms();
#endif
base::Optional<base::Time> initial_virtual_time;
if (command_line.HasSwitch(switches::kInitialVirtualTime)) {
double initial_time;
if (base::StringToDouble(
command_line.GetSwitchValueASCII(switches::kInitialVirtualTime),
&initial_time)) {
initial_virtual_time = base::Time::FromDoubleT(initial_time);
}
}
std::unique_ptr<blink::scheduler::WebThreadScheduler> main_thread_scheduler(
blink::scheduler::WebThreadScheduler::CreateMainThreadScheduler(
initial_virtual_time));
// PlatformInitialize uses FieldTrials, so this must happen later.
platform.PlatformInitialize();
#if BUILDFLAG(ENABLE_PLUGINS)
// Load pepper plugins before engaging the sandbox.
PepperPluginRegistry::GetInstance();
#endif
// Initialize WebRTC before engaging the sandbox.
// NOTE: On linux, this call could already have been made from
// zygote_main_linux.cc. However, calling multiple times from the same thread
// is OK.
InitializeWebRtcModule();
{
bool run_loop = true;
bool need_sandbox =
!command_line.HasSwitch(service_manager::switches::kNoSandbox);
#if !defined(OS_WIN) && !defined(OS_MACOSX)
// Sandbox is enabled before RenderProcess initialization on all platforms,
// except Windows and Mac.
// TODO(markus): Check if it is OK to remove ifdefs for Windows and Mac.
if (need_sandbox) {
run_loop = platform.EnableSandbox();
need_sandbox = false;
}
#endif
std::unique_ptr<RenderProcess> render_process = RenderProcessImpl::Create();
// It's not a memory leak since RenderThread has the same lifetime
// as a renderer process.
new RenderThreadImpl(std::move(main_thread_scheduler));
if (need_sandbox)
run_loop = platform.EnableSandbox();
base::HighResolutionTimerManager hi_res_timer_manager;
if (run_loop) {
#if defined(OS_MACOSX)
if (pool)
pool->Recycle();
#endif
TRACE_EVENT_ASYNC_BEGIN0("toplevel", "RendererMain.START_MSG_LOOP", 0);
base::RunLoop().Run();
TRACE_EVENT_ASYNC_END0("toplevel", "RendererMain.START_MSG_LOOP", 0);
}
#if defined(LEAK_SANITIZER)
// Run leak detection before RenderProcessImpl goes out of scope. This helps
// ignore shutdown-only leaks.
__lsan_do_leak_check();
#endif
}
platform.PlatformUninitialize();
TRACE_EVENT_ASYNC_END0("startup", "RendererMain", 0);
return 0;
}
} // namespace content