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// Copyright 2018 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.
#ifndef GPU_COMMAND_BUFFER_SERVICE_GR_CACHE_CONTROLLER_H_
#define GPU_COMMAND_BUFFER_SERVICE_GR_CACHE_CONTROLLER_H_
#include "base/cancelable_callback.h"
#include "base/single_thread_task_runner.h"
#include "gpu/gpu_gles2_export.h"
namespace gpu {
class SharedContextState;
namespace raster {
// Manages clearing the GrContext cache after a period of inactivity.
// TODO(khushalsagar): This class replicates the ContextCacheController used in
// the renderer with GPU raster but ideally this logic should exist in the
// gpu::Scheduler, since it can better identify when we are in an idle state.
class GPU_GLES2_EXPORT GrCacheController {
public:
GrCacheController(SharedContextState* context_state,
scoped_refptr<base::SingleThreadTaskRunner> task_runner);
~GrCacheController();
// Called to schedule purging the GrCache after a period of inactivity.
void ScheduleGrContextCleanup();
private:
void PurgeGrCache(uint64_t idle_id);
void RecordGrContextMemory() const;
// The |current_idle_id_| is used to avoid continuously posting tasks to clear
// the GrContext. Each time the context is used this id is incremented and
// added to the callback. If the context is used between the time the callback
// is posted and run, it sees a different id and further delays clearing the
// cache.
uint64_t current_idle_id_ = 0u;
base::CancelableOnceClosure purge_gr_cache_cb_;
SharedContextState* context_state_;
scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
DISALLOW_COPY_AND_ASSIGN(GrCacheController);
};
} // namespace raster
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_GR_CACHE_CONTROLLER_H_
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