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// Copyright (c) 2010 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 "chrome/gpu/gpu_thread.h"
#include <string>
#include <vector>
#include "app/gfx/gl/gl_context.h"
#include "base/command_line.h"
#include "build/build_config.h"
#include "chrome/common/child_process.h"
#include "chrome/common/gpu_info.h"
#include "chrome/common/gpu_messages.h"
#include "chrome/gpu/gpu_info_collector.h"
#include "ipc/ipc_channel_handle.h"
#if defined(OS_WIN)
#include "chrome/gpu/gpu_view_win.h"
#elif defined(GPU_USE_GLX)
#include "chrome/gpu/gpu_backing_store_glx_context.h"
#include "chrome/gpu/gpu_view_x.h"
#include <X11/Xutil.h> // Must be last.
#endif
#if defined(OS_LINUX)
#include "app/x11_util.h"
#include <gtk/gtk.h>
#endif
GpuThread::GpuThread() {
#if defined(GPU_USE_GLX)
display_ = ::XOpenDisplay(NULL);
#endif
#if defined(OS_LINUX)
{
// The X11 port of the command buffer code assumes it can access the X
// display via the macro GDK_DISPLAY(), which implies that Gtk has been
// initialized. This code was taken from PluginThread. TODO(kbr):
// rethink whether initializing Gtk is really necessary or whether we
// should just send the display connection down to the GPUProcessor.
g_thread_init(NULL);
const std::vector<std::string>& args =
CommandLine::ForCurrentProcess()->argv();
int argc = args.size();
scoped_array<char *> argv(new char *[argc + 1]);
for (size_t i = 0; i < args.size(); ++i) {
// TODO(piman@google.com): can gtk_init modify argv? Just being safe
// here.
argv[i] = strdup(args[i].c_str());
}
argv[argc] = NULL;
char **argv_pointer = argv.get();
gtk_init(&argc, &argv_pointer);
for (size_t i = 0; i < args.size(); ++i) {
free(argv[i]);
}
x11_util::SetDefaultX11ErrorHandlers();
}
#endif
}
GpuThread::~GpuThread() {
}
#if defined(GPU_USE_GLX)
GpuBackingStoreGLXContext* GpuThread::GetGLXContext() {
if (!glx_context_.get())
glx_context_.reset(new GpuBackingStoreGLXContext(this));
return glx_context_.get();
}
#endif
void GpuThread::RemoveChannel(int renderer_id) {
gpu_channels_.erase(renderer_id);
}
void GpuThread::OnControlMessageReceived(const IPC::Message& msg) {
bool msg_is_ok = true;
IPC_BEGIN_MESSAGE_MAP_EX(GpuThread, msg, msg_is_ok)
IPC_MESSAGE_HANDLER(GpuMsg_EstablishChannel,
OnEstablishChannel)
IPC_MESSAGE_HANDLER(GpuMsg_Synchronize,
OnSynchronize)
IPC_MESSAGE_HANDLER(GpuMsg_NewRenderWidgetHostView,
OnNewRenderWidgetHostView)
IPC_MESSAGE_HANDLER(GpuMsg_CollectGraphicsInfo,
OnCollectGraphicsInfo)
IPC_MESSAGE_HANDLER(GpuMsg_Crash,
OnCrash)
IPC_MESSAGE_HANDLER(GpuMsg_Hang,
OnHang)
IPC_END_MESSAGE_MAP_EX()
}
void GpuThread::OnEstablishChannel(int renderer_id) {
scoped_refptr<GpuChannel> channel;
IPC::ChannelHandle channel_handle;
GPUInfo gpu_info;
// Fail to establish a channel if some implementation of GL cannot be
// initialized.
if (gfx::GLContext::InitializeOneOff()) {
// Fail to establish channel if GPU stats cannot be retreived.
if (gpu_info_collector::CollectGraphicsInfo(&gpu_info)) {
GpuChannelMap::const_iterator iter = gpu_channels_.find(renderer_id);
if (iter == gpu_channels_.end()) {
channel = new GpuChannel(renderer_id);
} else {
channel = iter->second;
}
DCHECK(channel != NULL);
if (channel->Init()) {
gpu_channels_[renderer_id] = channel;
} else {
channel = NULL;
}
if (channel.get()) {
channel_handle.name = channel->GetChannelName();
#if defined(OS_POSIX)
// On POSIX, pass the renderer-side FD. Also mark it as auto-close so
// that it gets closed after it has been sent.
int renderer_fd = channel->DisownRendererFd();
channel_handle.socket = base::FileDescriptor(renderer_fd, true);
#endif
}
}
}
Send(new GpuHostMsg_ChannelEstablished(channel_handle, gpu_info));
}
void GpuThread::OnSynchronize() {
Send(new GpuHostMsg_SynchronizeReply());
}
void GpuThread::OnNewRenderWidgetHostView(GpuNativeWindowHandle parent_window,
int32 routing_id) {
// The GPUView class' lifetime is controlled by the host, which will send a
// message to destroy the GpuRWHView when necessary. So we don't manage the
// lifetime of this object.
#if defined(OS_WIN)
new GpuViewWin(this, parent_window, routing_id);
#elif defined(GPU_USE_GLX)
new GpuViewX(this, parent_window, routing_id);
#else
NOTIMPLEMENTED();
#endif
}
void GpuThread::OnCollectGraphicsInfo() {
// Fail to establish a channel if some implementation of GL cannot be
// initialized.
GPUInfo gpu_info;
if (gfx::GLContext::InitializeOneOff()) {
gpu_info_collector::CollectGraphicsInfo(&gpu_info);
}
Send(new GpuHostMsg_GraphicsInfoCollected(gpu_info));
}
void GpuThread::OnCrash() {
// Good bye, cruel world.
volatile int* it_s_the_end_of_the_world_as_we_know_it = NULL;
*it_s_the_end_of_the_world_as_we_know_it = 0xdead;
}
void GpuThread::OnHang() {
for (;;)
PlatformThread::Sleep(1000);
}
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