// 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/browser/gpu/gpu_process_host.h"
#include "base/base64.h"
#include "base/base_switches.h"
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/command_line.h"
#include "base/debug/trace_event.h"
#include "base/logging.h"
#include "base/memory/ref_counted.h"
#include "base/metrics/histogram.h"
#include "base/sha1.h"
#include "base/threading/thread.h"
#include "content/browser/browser_child_process_host_impl.h"
#include "content/browser/gpu/compositor_util.h"
#include "content/browser/gpu/gpu_data_manager_impl.h"
#include "content/browser/gpu/gpu_process_host_ui_shim.h"
#include "content/browser/gpu/shader_disk_cache.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/browser/renderer_host/render_widget_resize_helper.h"
#include "content/common/child_process_host_impl.h"
#include "content/common/gpu/gpu_messages.h"
#include "content/common/view_messages.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/content_browser_client.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_widget_host_view.h"
#include "content/public/browser/render_widget_host_view_frame_subscriber.h"
#include "content/public/common/content_client.h"
#include "content/public/common/content_switches.h"
#include "content/public/common/result_codes.h"
#include "content/public/common/sandboxed_process_launcher_delegate.h"
#include "gpu/command_buffer/service/gpu_switches.h"
#include "ipc/ipc_channel_handle.h"
#include "ipc/ipc_switches.h"
#include "ipc/message_filter.h"
#include "media/base/media_switches.h"
#include "ui/base/ui_base_switches.h"
#include "ui/events/latency_info.h"
#include "ui/gl/gl_switches.h"
#if defined(OS_WIN)
#include "base/win/windows_version.h"
#include "content/common/sandbox_win.h"
#include "sandbox/win/src/sandbox_policy.h"
#include "ui/gfx/switches.h"
#endif
#if defined(USE_OZONE)
#include "ui/ozone/public/ozone_switches.h"
#endif
#if defined(USE_X11) && !defined(OS_CHROMEOS)
#include "ui/gfx/x/x11_switches.h"
#endif
namespace content {
bool GpuProcessHost::gpu_enabled_ = true;
bool GpuProcessHost::hardware_gpu_enabled_ = true;
int GpuProcessHost::gpu_crash_count_ = 0;
int GpuProcessHost::gpu_recent_crash_count_ = 0;
bool GpuProcessHost::crashed_before_ = false;
int GpuProcessHost::swiftshader_crash_count_ = 0;
namespace {
// Command-line switches to propagate to the GPU process.
static const char* const kSwitchNames[] = {
switches::kDisableAcceleratedVideoDecode,
switches::kDisableBreakpad,
switches::kDisableGpuSandbox,
switches::kDisableGpuWatchdog,
switches::kDisableLogging,
switches::kDisableSeccompFilterSandbox,
#if defined(ENABLE_WEBRTC)
switches::kDisableWebRtcHWEncoding,
switches::kEnableWebRtcHWVp8Encoding,
#endif
switches::kEnableLogging,
switches::kEnableShareGroupAsyncTextureUpload,
#if defined(OS_CHROMEOS)
switches::kDisableVaapiAcceleratedVideoEncode,
#endif
switches::kGpuStartupDialog,
switches::kGpuSandboxAllowSysVShm,
switches::kGpuSandboxFailuresFatal,
switches::kGpuSandboxStartEarly,
switches::kIgnoreResolutionLimitsForAcceleratedVideoDecode,
switches::kLoggingLevel,
switches::kLowEndDeviceMode,
switches::kNoSandbox,
switches::kTestGLLib,
switches::kTraceStartup,
switches::kTraceToConsole,
switches::kV,
switches::kVModule,
#if defined(OS_MACOSX)
switches::kEnableRemoteCoreAnimation,
switches::kEnableSandboxLogging,
#endif
#if defined(USE_AURA)
switches::kUIPrioritizeInGpuProcess,
#endif
#if defined(USE_OZONE)
switches::kOzonePlatform,
switches::kOzoneUseSurfaceless,
#endif
#if defined(USE_X11) && !defined(OS_CHROMEOS)
switches::kX11Display,
#endif
};
enum GPUProcessLifetimeEvent {
LAUNCHED,
DIED_FIRST_TIME,
DIED_SECOND_TIME,
DIED_THIRD_TIME,
DIED_FOURTH_TIME,
GPU_PROCESS_LIFETIME_EVENT_MAX = 100
};
// Indexed by GpuProcessKind. There is one of each kind maximum. This array may
// only be accessed from the IO thread.
GpuProcessHost* g_gpu_process_hosts[GpuProcessHost::GPU_PROCESS_KIND_COUNT];
void SendGpuProcessMessage(GpuProcessHost::GpuProcessKind kind,
CauseForGpuLaunch cause,
IPC::Message* message) {
GpuProcessHost* host = GpuProcessHost::Get(kind, cause);
if (host) {
host->Send(message);
} else {
delete message;
}
}
// NOTE: changes to this class need to be reviewed by the security team.
class GpuSandboxedProcessLauncherDelegate
: public SandboxedProcessLauncherDelegate {
public:
GpuSandboxedProcessLauncherDelegate(base::CommandLine* cmd_line,
ChildProcessHost* host)
#if defined(OS_WIN)
: cmd_line_(cmd_line) {}
#elif defined(OS_POSIX)
: ipc_fd_(host->TakeClientFileDescriptor()) {}
#endif
virtual ~GpuSandboxedProcessLauncherDelegate() {}
#if defined(OS_WIN)
virtual bool ShouldSandbox() OVERRIDE {
bool sandbox = !cmd_line_->HasSwitch(switches::kDisableGpuSandbox);
if(! sandbox) {
DVLOG(1) << "GPU sandbox is disabled";
}
return sandbox;
}
virtual void PreSandbox(bool* disable_default_policy,
base::FilePath* exposed_dir) OVERRIDE {
*disable_default_policy = true;
}
// For the GPU process we gotten as far as USER_LIMITED. The next level
// which is USER_RESTRICTED breaks both the DirectX backend and the OpenGL
// backend. Note that the GPU process is connected to the interactive
// desktop.
virtual void PreSpawnTarget(sandbox::TargetPolicy* policy,
bool* success) {
if (base::win::GetVersion() > base::win::VERSION_XP) {
if (cmd_line_->GetSwitchValueASCII(switches::kUseGL) ==
gfx::kGLImplementationDesktopName) {
// Open GL path.
policy->SetTokenLevel(sandbox::USER_RESTRICTED_SAME_ACCESS,
sandbox::USER_LIMITED);
SetJobLevel(*cmd_line_, sandbox::JOB_UNPROTECTED, 0, policy);
policy->SetDelayedIntegrityLevel(sandbox::INTEGRITY_LEVEL_LOW);
} else {
policy->SetTokenLevel(sandbox::USER_RESTRICTED_SAME_ACCESS,
sandbox::USER_LIMITED);
// UI restrictions break when we access Windows from outside our job.
// However, we don't want a proxy window in this process because it can
// introduce deadlocks where the renderer blocks on the gpu, which in
// turn blocks on the browser UI thread. So, instead we forgo a window
// message pump entirely and just add job restrictions to prevent child
// processes.
SetJobLevel(*cmd_line_,
sandbox::JOB_LIMITED_USER,
JOB_OBJECT_UILIMIT_SYSTEMPARAMETERS |
JOB_OBJECT_UILIMIT_DESKTOP |
JOB_OBJECT_UILIMIT_EXITWINDOWS |
JOB_OBJECT_UILIMIT_DISPLAYSETTINGS,
policy);
policy->SetIntegrityLevel(sandbox::INTEGRITY_LEVEL_LOW);
}
} else {
SetJobLevel(*cmd_line_, sandbox::JOB_UNPROTECTED, 0, policy);
policy->SetTokenLevel(sandbox::USER_UNPROTECTED,
sandbox::USER_LIMITED);
}
// Allow the server side of GPU sockets, which are pipes that have
// the "chrome.gpu" namespace and an arbitrary suffix.
sandbox::ResultCode result = policy->AddRule(
sandbox::TargetPolicy::SUBSYS_NAMED_PIPES,
sandbox::TargetPolicy::NAMEDPIPES_ALLOW_ANY,
L"\\\\.\\pipe\\chrome.gpu.*");
if (result != sandbox::SBOX_ALL_OK) {
*success = false;
return;
}
// Block this DLL even if it is not loaded by the browser process.
policy->AddDllToUnload(L"cmsetac.dll");
#ifdef USE_AURA
// GPU also needs to add sections to the browser for aura
// TODO(jschuh): refactor the GPU channel to remove this. crbug.com/128786
result = policy->AddRule(sandbox::TargetPolicy::SUBSYS_HANDLES,
sandbox::TargetPolicy::HANDLES_DUP_BROKER,
L"Section");
if (result != sandbox::SBOX_ALL_OK) {
*success = false;
return;
}
#endif
if (cmd_line_->HasSwitch(switches::kEnableLogging)) {
base::string16 log_file_path = logging::GetLogFileFullPath();
if (!log_file_path.empty()) {
result = policy->AddRule(sandbox::TargetPolicy::SUBSYS_FILES,
sandbox::TargetPolicy::FILES_ALLOW_ANY,
log_file_path.c_str());
if (result != sandbox::SBOX_ALL_OK) {
*success = false;
return;
}
}
}
}
#elif defined(OS_POSIX)
virtual int GetIpcFd() OVERRIDE {
return ipc_fd_;
}
#endif // OS_WIN
private:
#if defined(OS_WIN)
base::CommandLine* cmd_line_;
#elif defined(OS_POSIX)
int ipc_fd_;
#endif // OS_WIN
};
} // anonymous namespace
// static
bool GpuProcessHost::ValidateHost(GpuProcessHost* host) {
// The Gpu process is invalid if it's not using SwiftShader, the card is
// blacklisted, and we can kill it and start over.
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kSingleProcess) ||
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kInProcessGPU) ||
(host->valid_ &&
(host->swiftshader_rendering_ ||
!GpuDataManagerImpl::GetInstance()->ShouldUseSwiftShader()))) {
return true;
}
host->ForceShutdown();
return false;
}
// static
GpuProcessHost* GpuProcessHost::Get(GpuProcessKind kind,
CauseForGpuLaunch cause) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
// Don't grant further access to GPU if it is not allowed.
GpuDataManagerImpl* gpu_data_manager = GpuDataManagerImpl::GetInstance();
DCHECK(gpu_data_manager);
if (!gpu_data_manager->GpuAccessAllowed(NULL))
return NULL;
if (g_gpu_process_hosts[kind] && ValidateHost(g_gpu_process_hosts[kind]))
return g_gpu_process_hosts[kind];
if (cause == CAUSE_FOR_GPU_LAUNCH_NO_LAUNCH)
return NULL;
static int last_host_id = 0;
int host_id;
host_id = ++last_host_id;
UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessLaunchCause",
cause,
CAUSE_FOR_GPU_LAUNCH_MAX_ENUM);
GpuProcessHost* host = new GpuProcessHost(host_id, kind);
if (host->Init())
return host;
delete host;
return NULL;
}
// static
void GpuProcessHost::GetProcessHandles(
const GpuDataManager::GetGpuProcessHandlesCallback& callback) {
if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
BrowserThread::PostTask(
BrowserThread::IO,
FROM_HERE,
base::Bind(&GpuProcessHost::GetProcessHandles, callback));
return;
}
std::list<base::ProcessHandle> handles;
for (size_t i = 0; i < arraysize(g_gpu_process_hosts); ++i) {
GpuProcessHost* host = g_gpu_process_hosts[i];
if (host && ValidateHost(host))
handles.push_back(host->process_->GetHandle());
}
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(callback, handles));
}
// static
void GpuProcessHost::SendOnIO(GpuProcessKind kind,
CauseForGpuLaunch cause,
IPC::Message* message) {
if (!BrowserThread::PostTask(
BrowserThread::IO, FROM_HERE,
base::Bind(
&SendGpuProcessMessage, kind, cause, message))) {
delete message;
}
}
GpuMainThreadFactoryFunction g_gpu_main_thread_factory = NULL;
void GpuProcessHost::RegisterGpuMainThreadFactory(
GpuMainThreadFactoryFunction create) {
g_gpu_main_thread_factory = create;
}
// static
GpuProcessHost* GpuProcessHost::FromID(int host_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
for (int i = 0; i < GPU_PROCESS_KIND_COUNT; ++i) {
GpuProcessHost* host = g_gpu_process_hosts[i];
if (host && host->host_id_ == host_id && ValidateHost(host))
return host;
}
return NULL;
}
GpuProcessHost::GpuProcessHost(int host_id, GpuProcessKind kind)
: host_id_(host_id),
valid_(true),
in_process_(false),
swiftshader_rendering_(false),
kind_(kind),
process_launched_(false),
initialized_(false),
gpu_crash_recorded_(false),
uma_memory_stats_received_(false) {
if (base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kSingleProcess) ||
base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kInProcessGPU)) {
in_process_ = true;
}
// If the 'single GPU process' policy ever changes, we still want to maintain
// it for 'gpu thread' mode and only create one instance of host and thread.
DCHECK(!in_process_ || g_gpu_process_hosts[kind] == NULL);
g_gpu_process_hosts[kind] = this;
// Post a task to create the corresponding GpuProcessHostUIShim. The
// GpuProcessHostUIShim will be destroyed if either the browser exits,
// in which case it calls GpuProcessHostUIShim::DestroyAll, or the
// GpuProcessHost is destroyed, which happens when the corresponding GPU
// process terminates or fails to launch.
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(base::IgnoreResult(&GpuProcessHostUIShim::Create), host_id));
process_.reset(new BrowserChildProcessHostImpl(PROCESS_TYPE_GPU, this));
}
GpuProcessHost::~GpuProcessHost() {
DCHECK(CalledOnValidThread());
SendOutstandingReplies();
RecordProcessCrash();
// In case we never started, clean up.
while (!queued_messages_.empty()) {
delete queued_messages_.front();
queued_messages_.pop();
}
// This is only called on the IO thread so no race against the constructor
// for another GpuProcessHost.
if (g_gpu_process_hosts[kind_] == this)
g_gpu_process_hosts[kind_] = NULL;
// If there are any remaining offscreen contexts at the point the
// GPU process exits, assume something went wrong, and block their
// URLs from accessing client 3D APIs without prompting.
BlockLiveOffscreenContexts();
UMA_HISTOGRAM_COUNTS_100("GPU.AtExitSurfaceCount",
GpuSurfaceTracker::Get()->GetSurfaceCount());
UMA_HISTOGRAM_BOOLEAN("GPU.AtExitReceivedMemoryStats",
uma_memory_stats_received_);
if (uma_memory_stats_received_) {
UMA_HISTOGRAM_COUNTS_100("GPU.AtExitManagedMemoryClientCount",
uma_memory_stats_.client_count);
UMA_HISTOGRAM_COUNTS_100("GPU.AtExitContextGroupCount",
uma_memory_stats_.context_group_count);
UMA_HISTOGRAM_CUSTOM_COUNTS(
"GPU.AtExitMBytesAllocated",
uma_memory_stats_.bytes_allocated_current / 1024 / 1024, 1, 2000, 50);
UMA_HISTOGRAM_CUSTOM_COUNTS(
"GPU.AtExitMBytesAllocatedMax",
uma_memory_stats_.bytes_allocated_max / 1024 / 1024, 1, 2000, 50);
UMA_HISTOGRAM_CUSTOM_COUNTS(
"GPU.AtExitMBytesLimit",
uma_memory_stats_.bytes_limit / 1024 / 1024, 1, 2000, 50);
}
std::string message;
if (!in_process_) {
int exit_code;
base::TerminationStatus status = process_->GetTerminationStatus(
false /* known_dead */, &exit_code);
UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessTerminationStatus",
status,
base::TERMINATION_STATUS_MAX_ENUM);
if (status == base::TERMINATION_STATUS_NORMAL_TERMINATION ||
status == base::TERMINATION_STATUS_ABNORMAL_TERMINATION) {
UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessExitCode",
exit_code,
RESULT_CODE_LAST_CODE);
}
switch (status) {
case base::TERMINATION_STATUS_NORMAL_TERMINATION:
message = "The GPU process exited normally. Everything is okay.";
break;
case base::TERMINATION_STATUS_ABNORMAL_TERMINATION:
message = base::StringPrintf(
"The GPU process exited with code %d.",
exit_code);
break;
case base::TERMINATION_STATUS_PROCESS_WAS_KILLED:
message = "You killed the GPU process! Why?";
break;
case base::TERMINATION_STATUS_PROCESS_CRASHED:
message = "The GPU process crashed!";
break;
default:
break;
}
}
BrowserThread::PostTask(BrowserThread::UI,
FROM_HERE,
base::Bind(&GpuProcessHostUIShim::Destroy,
host_id_,
message));
}
bool GpuProcessHost::Init() {
init_start_time_ = base::TimeTicks::Now();
TRACE_EVENT_INSTANT0("gpu", "LaunchGpuProcess", TRACE_EVENT_SCOPE_THREAD);
std::string channel_id = process_->GetHost()->CreateChannel();
if (channel_id.empty())
return false;
if (in_process_) {
DCHECK(g_gpu_main_thread_factory);
base::CommandLine* command_line = base::CommandLine::ForCurrentProcess();
command_line->AppendSwitch(switches::kDisableGpuWatchdog);
GpuDataManagerImpl* gpu_data_manager = GpuDataManagerImpl::GetInstance();
DCHECK(gpu_data_manager);
gpu_data_manager->AppendGpuCommandLine(command_line);
in_process_gpu_thread_.reset(g_gpu_main_thread_factory(channel_id));
in_process_gpu_thread_->Start();
OnProcessLaunched(); // Fake a callback that the process is ready.
} else if (!LaunchGpuProcess(channel_id)) {
return false;
}
if (!Send(new GpuMsg_Initialize()))
return false;
return true;
}
void GpuProcessHost::RouteOnUIThread(const IPC::Message& message) {
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&RouteToGpuProcessHostUIShimTask, host_id_, message));
}
bool GpuProcessHost::Send(IPC::Message* msg) {
DCHECK(CalledOnValidThread());
if (process_->GetHost()->IsChannelOpening()) {
queued_messages_.push(msg);
return true;
}
bool result = process_->Send(msg);
if (!result) {
// Channel is hosed, but we may not get destroyed for a while. Send
// outstanding channel creation failures now so that the caller can restart
// with a new process/channel without waiting.
SendOutstandingReplies();
}
return result;
}
void GpuProcessHost::AddFilter(IPC::MessageFilter* filter) {
DCHECK(CalledOnValidThread());
process_->GetHost()->AddFilter(filter);
}
bool GpuProcessHost::OnMessageReceived(const IPC::Message& message) {
DCHECK(CalledOnValidThread());
IPC_BEGIN_MESSAGE_MAP(GpuProcessHost, message)
IPC_MESSAGE_HANDLER(GpuHostMsg_Initialized, OnInitialized)
IPC_MESSAGE_HANDLER(GpuHostMsg_ChannelEstablished, OnChannelEstablished)
IPC_MESSAGE_HANDLER(GpuHostMsg_CommandBufferCreated, OnCommandBufferCreated)
IPC_MESSAGE_HANDLER(GpuHostMsg_DestroyCommandBuffer, OnDestroyCommandBuffer)
IPC_MESSAGE_HANDLER(GpuHostMsg_GpuMemoryBufferCreated,
OnGpuMemoryBufferCreated)
IPC_MESSAGE_HANDLER(GpuHostMsg_DidCreateOffscreenContext,
OnDidCreateOffscreenContext)
IPC_MESSAGE_HANDLER(GpuHostMsg_DidLoseContext, OnDidLoseContext)
IPC_MESSAGE_HANDLER(GpuHostMsg_DidDestroyOffscreenContext,
OnDidDestroyOffscreenContext)
IPC_MESSAGE_HANDLER(GpuHostMsg_GpuMemoryUmaStats,
OnGpuMemoryUmaStatsReceived)
#if defined(OS_MACOSX)
IPC_MESSAGE_HANDLER_GENERIC(GpuHostMsg_AcceleratedSurfaceBuffersSwapped,
OnAcceleratedSurfaceBuffersSwapped(message))
#endif
IPC_MESSAGE_HANDLER(GpuHostMsg_DestroyChannel,
OnDestroyChannel)
IPC_MESSAGE_HANDLER(GpuHostMsg_CacheShader,
OnCacheShader)
IPC_MESSAGE_UNHANDLED(RouteOnUIThread(message))
IPC_END_MESSAGE_MAP()
return true;
}
void GpuProcessHost::OnChannelConnected(int32 peer_pid) {
TRACE_EVENT0("gpu", "GpuProcessHost::OnChannelConnected");
while (!queued_messages_.empty()) {
Send(queued_messages_.front());
queued_messages_.pop();
}
}
void GpuProcessHost::EstablishGpuChannel(
int client_id,
bool share_context,
bool allow_future_sync_points,
const EstablishChannelCallback& callback) {
DCHECK(CalledOnValidThread());
TRACE_EVENT0("gpu", "GpuProcessHost::EstablishGpuChannel");
// If GPU features are already blacklisted, no need to establish the channel.
if (!GpuDataManagerImpl::GetInstance()->GpuAccessAllowed(NULL)) {
DVLOG(1) << "GPU blacklisted, refusing to open a GPU channel.";
callback.Run(IPC::ChannelHandle(), gpu::GPUInfo());
return;
}
if (Send(new GpuMsg_EstablishChannel(
client_id, share_context, allow_future_sync_points))) {
channel_requests_.push(callback);
} else {
DVLOG(1) << "Failed to send GpuMsg_EstablishChannel.";
callback.Run(IPC::ChannelHandle(), gpu::GPUInfo());
}
if (!base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableGpuShaderDiskCache)) {
CreateChannelCache(client_id);
}
}
void GpuProcessHost::CreateViewCommandBuffer(
const gfx::GLSurfaceHandle& compositing_surface,
int surface_id,
int client_id,
const GPUCreateCommandBufferConfig& init_params,
int route_id,
const CreateCommandBufferCallback& callback) {
TRACE_EVENT0("gpu", "GpuProcessHost::CreateViewCommandBuffer");
DCHECK(CalledOnValidThread());
if (!compositing_surface.is_null() &&
Send(new GpuMsg_CreateViewCommandBuffer(
compositing_surface, surface_id, client_id, init_params, route_id))) {
create_command_buffer_requests_.push(callback);
surface_refs_.insert(std::make_pair(surface_id,
GpuSurfaceTracker::GetInstance()->GetSurfaceRefForSurface(surface_id)));
} else {
// Could distinguish here between compositing_surface being NULL
// and Send failing, if desired.
callback.Run(CREATE_COMMAND_BUFFER_FAILED_AND_CHANNEL_LOST);
}
}
void GpuProcessHost::CreateGpuMemoryBuffer(
const gfx::GpuMemoryBufferHandle& handle,
const gfx::Size& size,
unsigned internalformat,
unsigned usage,
const CreateGpuMemoryBufferCallback& callback) {
TRACE_EVENT0("gpu", "GpuProcessHost::CreateGpuMemoryBuffer");
DCHECK(CalledOnValidThread());
if (Send(new GpuMsg_CreateGpuMemoryBuffer(
handle, size, internalformat, usage))) {
create_gpu_memory_buffer_requests_.push(callback);
} else {
callback.Run(gfx::GpuMemoryBufferHandle());
}
}
void GpuProcessHost::DestroyGpuMemoryBuffer(
const gfx::GpuMemoryBufferHandle& handle,
int sync_point) {
TRACE_EVENT0("gpu", "GpuProcessHost::DestroyGpuMemoryBuffer");
DCHECK(CalledOnValidThread());
Send(new GpuMsg_DestroyGpuMemoryBuffer(handle, sync_point));
}
void GpuProcessHost::OnInitialized(bool result, const gpu::GPUInfo& gpu_info) {
UMA_HISTOGRAM_BOOLEAN("GPU.GPUProcessInitialized", result);
initialized_ = result;
if (!initialized_)
GpuDataManagerImpl::GetInstance()->OnGpuProcessInitFailure();
else if (!in_process_)
GpuDataManagerImpl::GetInstance()->UpdateGpuInfo(gpu_info);
}
void GpuProcessHost::OnChannelEstablished(
const IPC::ChannelHandle& channel_handle) {
TRACE_EVENT0("gpu", "GpuProcessHost::OnChannelEstablished");
if (channel_requests_.empty()) {
// This happens when GPU process is compromised.
RouteOnUIThread(GpuHostMsg_OnLogMessage(
logging::LOG_WARNING,
"WARNING",
"Received a ChannelEstablished message but no requests in queue."));
return;
}
EstablishChannelCallback callback = channel_requests_.front();
channel_requests_.pop();
// Currently if any of the GPU features are blacklisted, we don't establish a
// GPU channel.
if (!channel_handle.name.empty() &&
!GpuDataManagerImpl::GetInstance()->GpuAccessAllowed(NULL)) {
Send(new GpuMsg_CloseChannel(channel_handle));
callback.Run(IPC::ChannelHandle(), gpu::GPUInfo());
RouteOnUIThread(GpuHostMsg_OnLogMessage(
logging::LOG_WARNING,
"WARNING",
"Hardware acceleration is unavailable."));
return;
}
callback.Run(channel_handle,
GpuDataManagerImpl::GetInstance()->GetGPUInfo());
}
void GpuProcessHost::OnCommandBufferCreated(CreateCommandBufferResult result) {
TRACE_EVENT0("gpu", "GpuProcessHost::OnCommandBufferCreated");
if (create_command_buffer_requests_.empty())
return;
CreateCommandBufferCallback callback =
create_command_buffer_requests_.front();
create_command_buffer_requests_.pop();
callback.Run(result);
}
void GpuProcessHost::OnDestroyCommandBuffer(int32 surface_id) {
TRACE_EVENT0("gpu", "GpuProcessHost::OnDestroyCommandBuffer");
SurfaceRefMap::iterator it = surface_refs_.find(surface_id);
if (it != surface_refs_.end()) {
surface_refs_.erase(it);
}
}
void GpuProcessHost::OnGpuMemoryBufferCreated(
const gfx::GpuMemoryBufferHandle& handle) {
TRACE_EVENT0("gpu", "GpuProcessHost::OnGpuMemoryBufferCreated");
if (create_gpu_memory_buffer_requests_.empty())
return;
CreateGpuMemoryBufferCallback callback =
create_gpu_memory_buffer_requests_.front();
create_gpu_memory_buffer_requests_.pop();
callback.Run(handle);
}
void GpuProcessHost::OnDidCreateOffscreenContext(const GURL& url) {
urls_with_live_offscreen_contexts_.insert(url);
}
void GpuProcessHost::OnDidLoseContext(bool offscreen,
gpu::error::ContextLostReason reason,
const GURL& url) {
// TODO(kbr): would be nice to see the "offscreen" flag too.
TRACE_EVENT2("gpu", "GpuProcessHost::OnDidLoseContext",
"reason", reason,
"url",
url.possibly_invalid_spec());
if (!offscreen || url.is_empty()) {
// Assume that the loss of the compositor's or accelerated canvas'
// context is a serious event and blame the loss on all live
// offscreen contexts. This more robustly handles situations where
// the GPU process may not actually detect the context loss in the
// offscreen context.
BlockLiveOffscreenContexts();
return;
}
GpuDataManagerImpl::DomainGuilt guilt;
switch (reason) {
case gpu::error::kGuilty:
guilt = GpuDataManagerImpl::DOMAIN_GUILT_KNOWN;
break;
case gpu::error::kUnknown:
guilt = GpuDataManagerImpl::DOMAIN_GUILT_UNKNOWN;
break;
case gpu::error::kInnocent:
return;
default:
NOTREACHED();
return;
}
GpuDataManagerImpl::GetInstance()->BlockDomainFrom3DAPIs(url, guilt);
}
void GpuProcessHost::OnDidDestroyOffscreenContext(const GURL& url) {
urls_with_live_offscreen_contexts_.erase(url);
}
void GpuProcessHost::OnGpuMemoryUmaStatsReceived(
const GPUMemoryUmaStats& stats) {
TRACE_EVENT0("gpu", "GpuProcessHost::OnGpuMemoryUmaStatsReceived");
uma_memory_stats_received_ = true;
uma_memory_stats_ = stats;
}
#if defined(OS_MACOSX)
void GpuProcessHost::OnAcceleratedSurfaceBuffersSwapped(
const IPC::Message& message) {
RenderWidgetResizeHelper::Get()->PostGpuProcessMsg(host_id_, message);
}
#endif
void GpuProcessHost::OnProcessLaunched() {
UMA_HISTOGRAM_TIMES("GPU.GPUProcessLaunchTime",
base::TimeTicks::Now() - init_start_time_);
}
void GpuProcessHost::OnProcessCrashed(int exit_code) {
SendOutstandingReplies();
RecordProcessCrash();
GpuDataManagerImpl::GetInstance()->ProcessCrashed(
process_->GetTerminationStatus(true /* known_dead */, NULL));
}
GpuProcessHost::GpuProcessKind GpuProcessHost::kind() {
return kind_;
}
void GpuProcessHost::ForceShutdown() {
// This is only called on the IO thread so no race against the constructor
// for another GpuProcessHost.
if (g_gpu_process_hosts[kind_] == this)
g_gpu_process_hosts[kind_] = NULL;
process_->ForceShutdown();
}
void GpuProcessHost::BeginFrameSubscription(
int surface_id,
base::WeakPtr<RenderWidgetHostViewFrameSubscriber> subscriber) {
frame_subscribers_[surface_id] = subscriber;
}
void GpuProcessHost::EndFrameSubscription(int surface_id) {
frame_subscribers_.erase(surface_id);
}
bool GpuProcessHost::LaunchGpuProcess(const std::string& channel_id) {
if (!(gpu_enabled_ &&
GpuDataManagerImpl::GetInstance()->ShouldUseSwiftShader()) &&
!hardware_gpu_enabled_) {
SendOutstandingReplies();
return false;
}
const base::CommandLine& browser_command_line =
*base::CommandLine::ForCurrentProcess();
base::CommandLine::StringType gpu_launcher =
browser_command_line.GetSwitchValueNative(switches::kGpuLauncher);
#if defined(OS_LINUX)
int child_flags = gpu_launcher.empty() ? ChildProcessHost::CHILD_ALLOW_SELF :
ChildProcessHost::CHILD_NORMAL;
#else
int child_flags = ChildProcessHost::CHILD_NORMAL;
#endif
base::FilePath exe_path = ChildProcessHost::GetChildPath(child_flags);
if (exe_path.empty())
return false;
base::CommandLine* cmd_line = new base::CommandLine(exe_path);
cmd_line->AppendSwitchASCII(switches::kProcessType, switches::kGpuProcess);
cmd_line->AppendSwitchASCII(switches::kProcessChannelID, channel_id);
if (kind_ == GPU_PROCESS_KIND_UNSANDBOXED)
cmd_line->AppendSwitch(switches::kDisableGpuSandbox);
// If you want a browser command-line switch passed to the GPU process
// you need to add it to |kSwitchNames| at the beginning of this file.
cmd_line->CopySwitchesFrom(browser_command_line, kSwitchNames,
arraysize(kSwitchNames));
cmd_line->CopySwitchesFrom(
browser_command_line, switches::kGpuSwitches, switches::kNumGpuSwitches);
cmd_line->CopySwitchesFrom(
browser_command_line, switches::kGLSwitchesCopiedFromGpuProcessHost,
switches::kGLSwitchesCopiedFromGpuProcessHostNumSwitches);
GetContentClient()->browser()->AppendExtraCommandLineSwitches(
cmd_line, process_->GetData().id);
GpuDataManagerImpl::GetInstance()->AppendGpuCommandLine(cmd_line);
if (cmd_line->HasSwitch(switches::kUseGL)) {
swiftshader_rendering_ =
(cmd_line->GetSwitchValueASCII(switches::kUseGL) == "swiftshader");
}
UMA_HISTOGRAM_BOOLEAN("GPU.GPU.GPUProcessSoftwareRendering",
swiftshader_rendering_);
// If specified, prepend a launcher program to the command line.
if (!gpu_launcher.empty())
cmd_line->PrependWrapper(gpu_launcher);
process_->Launch(
new GpuSandboxedProcessLauncherDelegate(cmd_line,
process_->GetHost()),
cmd_line);
process_launched_ = true;
UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessLifetimeEvents",
LAUNCHED, GPU_PROCESS_LIFETIME_EVENT_MAX);
return true;
}
void GpuProcessHost::SendOutstandingReplies() {
valid_ = false;
// First send empty channel handles for all EstablishChannel requests.
while (!channel_requests_.empty()) {
EstablishChannelCallback callback = channel_requests_.front();
channel_requests_.pop();
callback.Run(IPC::ChannelHandle(), gpu::GPUInfo());
}
while (!create_command_buffer_requests_.empty()) {
CreateCommandBufferCallback callback =
create_command_buffer_requests_.front();
create_command_buffer_requests_.pop();
callback.Run(CREATE_COMMAND_BUFFER_FAILED_AND_CHANNEL_LOST);
}
while (!create_gpu_memory_buffer_requests_.empty()) {
CreateGpuMemoryBufferCallback callback =
create_gpu_memory_buffer_requests_.front();
create_gpu_memory_buffer_requests_.pop();
callback.Run(gfx::GpuMemoryBufferHandle());
}
}
void GpuProcessHost::BlockLiveOffscreenContexts() {
for (std::multiset<GURL>::iterator iter =
urls_with_live_offscreen_contexts_.begin();
iter != urls_with_live_offscreen_contexts_.end(); ++iter) {
GpuDataManagerImpl::GetInstance()->BlockDomainFrom3DAPIs(
*iter, GpuDataManagerImpl::DOMAIN_GUILT_UNKNOWN);
}
}
void GpuProcessHost::RecordProcessCrash() {
// Skip if a GPU process crash was already counted.
if (gpu_crash_recorded_)
return;
// Maximum number of times the GPU process is allowed to crash in a session.
// Once this limit is reached, any request to launch the GPU process will
// fail.
const int kGpuMaxCrashCount = 3;
// Last time the GPU process crashed.
static base::Time last_gpu_crash_time;
bool disable_crash_limit = base::CommandLine::ForCurrentProcess()->HasSwitch(
switches::kDisableGpuProcessCrashLimit);
// Ending only acts as a failure if the GPU process was actually started and
// was intended for actual rendering (and not just checking caps or other
// options).
if (process_launched_ && kind_ == GPU_PROCESS_KIND_SANDBOXED) {
gpu_crash_recorded_ = true;
if (swiftshader_rendering_) {
UMA_HISTOGRAM_ENUMERATION("GPU.SwiftShaderLifetimeEvents",
DIED_FIRST_TIME + swiftshader_crash_count_,
GPU_PROCESS_LIFETIME_EVENT_MAX);
if (++swiftshader_crash_count_ >= kGpuMaxCrashCount &&
!disable_crash_limit) {
// SwiftShader is too unstable to use. Disable it for current session.
gpu_enabled_ = false;
}
} else {
++gpu_crash_count_;
UMA_HISTOGRAM_ENUMERATION("GPU.GPUProcessLifetimeEvents",
std::min(DIED_FIRST_TIME + gpu_crash_count_,
GPU_PROCESS_LIFETIME_EVENT_MAX - 1),
GPU_PROCESS_LIFETIME_EVENT_MAX);
// Allow about 1 GPU crash per hour to be removed from the crash count,
// so very occasional crashes won't eventually add up and prevent the
// GPU process from launching.
++gpu_recent_crash_count_;
base::Time current_time = base::Time::Now();
if (crashed_before_) {
int hours_different = (current_time - last_gpu_crash_time).InHours();
gpu_recent_crash_count_ =
std::max(0, gpu_recent_crash_count_ - hours_different);
}
crashed_before_ = true;
last_gpu_crash_time = current_time;
if ((gpu_recent_crash_count_ >= kGpuMaxCrashCount &&
!disable_crash_limit) ||
!initialized_) {
#if !defined(OS_CHROMEOS)
// The GPU process is too unstable to use. Disable it for current
// session.
hardware_gpu_enabled_ = false;
GpuDataManagerImpl::GetInstance()->DisableHardwareAcceleration();
#endif
}
}
}
}
std::string GpuProcessHost::GetShaderPrefixKey() {
if (shader_prefix_key_.empty()) {
gpu::GPUInfo info = GpuDataManagerImpl::GetInstance()->GetGPUInfo();
std::string in_str = GetContentClient()->GetProduct() + "-" +
info.gl_vendor + "-" + info.gl_renderer + "-" +
info.driver_version + "-" + info.driver_vendor;
base::Base64Encode(base::SHA1HashString(in_str), &shader_prefix_key_);
}
return shader_prefix_key_;
}
void GpuProcessHost::LoadedShader(const std::string& key,
const std::string& data) {
std::string prefix = GetShaderPrefixKey();
if (!key.compare(0, prefix.length(), prefix))
Send(new GpuMsg_LoadedShader(data));
}
void GpuProcessHost::CreateChannelCache(int32 client_id) {
TRACE_EVENT0("gpu", "GpuProcessHost::CreateChannelCache");
scoped_refptr<ShaderDiskCache> cache =
ShaderCacheFactory::GetInstance()->Get(client_id);
if (!cache.get())
return;
cache->set_host_id(host_id_);
client_id_to_shader_cache_[client_id] = cache;
}
void GpuProcessHost::OnDestroyChannel(int32 client_id) {
TRACE_EVENT0("gpu", "GpuProcessHost::OnDestroyChannel");
client_id_to_shader_cache_.erase(client_id);
}
void GpuProcessHost::OnCacheShader(int32 client_id,
const std::string& key,
const std::string& shader) {
TRACE_EVENT0("gpu", "GpuProcessHost::OnCacheShader");
ClientIdToShaderCacheMap::iterator iter =
client_id_to_shader_cache_.find(client_id);
// If the cache doesn't exist then this is an off the record profile.
if (iter == client_id_to_shader_cache_.end())
return;
iter->second->Cache(GetShaderPrefixKey() + ":" + key, shader);
}
} // namespace content