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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_GPU_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_
#define CONTENT_BROWSER_GPU_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_
#include <stddef.h>
#include <stdint.h>
#include "base/memory/ref_counted.h"
#include "base/task/single_thread_task_runner.h"
#include "base/timer/timer.h"
#include "build/build_config.h"
#include "content/common/content_export.h"
#include "gpu/ipc/client/gpu_channel_host.h"
namespace content {
class BrowserGpuChannelHostFactory : public gpu::GpuChannelEstablishFactory {
public:
static void Initialize(bool establish_gpu_channel);
static void Terminate();
CONTENT_EXPORT static BrowserGpuChannelHostFactory* instance() {
return instance_;
}
BrowserGpuChannelHostFactory(const BrowserGpuChannelHostFactory&) = delete;
BrowserGpuChannelHostFactory& operator=(const BrowserGpuChannelHostFactory&) =
delete;
gpu::GpuChannelHost* GetGpuChannel();
int GetGpuChannelId() { return gpu_client_id_; }
// Close the channel if there is no usage other usage of the channel.
// Note this is different from |CloseChannel| as this can be called at
// any point. The next EstablishGpuChannel will simply return a new channel.
void MaybeCloseChannel();
// Closes the channel to the GPU process. This should be called before the IO
// thread stops.
CONTENT_EXPORT void CloseChannel();
// Notify the BrowserGpuChannelHostFactory of visibility, used to prevent
// timeouts while backgrounded.
void SetApplicationVisible(bool is_visible);
// Overridden from gpu::GpuChannelEstablishFactory:
// The factory will return a null GpuChannelHost in the callback during
// shutdown.
void EstablishGpuChannel(
gpu::GpuChannelEstablishedCallback callback) override;
scoped_refptr<gpu::GpuChannelHost> EstablishGpuChannelSync() override;
private:
class EstablishRequest;
BrowserGpuChannelHostFactory();
~BrowserGpuChannelHostFactory() override;
void EstablishGpuChannel(gpu::GpuChannelEstablishedCallback callback,
bool sync);
void GpuChannelEstablished(EstablishRequest* request);
void RestartTimeout();
const int gpu_client_id_;
const uint64_t gpu_client_tracing_id_;
scoped_refptr<gpu::GpuChannelHost> gpu_channel_;
scoped_refptr<EstablishRequest> pending_request_;
bool is_visible_ = true;
base::OneShotTimer timeout_;
// instance() might be inlined at a call site so instance_ must also be
// exported.
CONTENT_EXPORT static BrowserGpuChannelHostFactory* instance_;
};
} // namespace content
#endif // CONTENT_BROWSER_GPU_BROWSER_GPU_CHANNEL_HOST_FACTORY_H_
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