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// 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.
#ifndef GPU_COMMAND_BUFFER_SERVICE_MEMORY_TRACKING_H_
#define GPU_COMMAND_BUFFER_SERVICE_MEMORY_TRACKING_H_
#include <stdint.h>
#include "base/macros.h"
#include "base/memory/scoped_refptr.h"
#include "base/memory/weak_ptr.h"
#include "base/synchronization/lock.h"
#include "gpu/command_buffer/common/command_buffer_id.h"
#include "gpu/gpu_export.h"
#include "gpu/ipc/common/gpu_peak_memory.h"
namespace base {
class SequencedTaskRunner;
} // namespace base
namespace gpu {
// A MemoryTracker is used to propagate per-ContextGroup memory usage
// statistics to the global GpuMemoryManager.
class GPU_EXPORT MemoryTracker {
public:
// Observe all changes in memory notified to this MemoryTracker.
class Observer {
public:
Observer() = default;
virtual ~Observer() = default;
virtual void OnMemoryAllocatedChange(
CommandBufferId id,
uint64_t old_size,
uint64_t new_size,
GpuPeakMemoryAllocationSource source) = 0;
private:
DISALLOW_COPY_AND_ASSIGN(Observer);
};
virtual ~MemoryTracker() = default;
virtual void TrackMemoryAllocatedChange(int64_t delta) = 0;
virtual uint64_t GetSize() const = 0;
// Raw ID identifying the GPU client for whom memory is being allocated.
virtual int ClientId() const = 0;
// Tracing id which identifies the GPU client for whom memory is being
// allocated.
virtual uint64_t ClientTracingId() const = 0;
// Returns an ID that uniquely identifies the context group.
virtual uint64_t ContextGroupTracingId() const = 0;
};
// A MemoryTypeTracker tracks the use of a particular type of memory (buffer,
// texture, or renderbuffer) and forward the result to a specified
// MemoryTracker. MemoryTypeTracker is thread-safe, but it must not outlive the
// MemoryTracker which will be notified on the sequence the MemoryTypeTracker
// was created on (if base::SequencedTaskRunnerHandle::IsSet()), or on the task
// runner specified (for testing).
class GPU_EXPORT MemoryTypeTracker {
public:
explicit MemoryTypeTracker(MemoryTracker* memory_tracker);
// For testing.
MemoryTypeTracker(MemoryTracker* memory_tracker,
scoped_refptr<base::SequencedTaskRunner> task_runner);
~MemoryTypeTracker();
void TrackMemAlloc(size_t bytes);
void TrackMemFree(size_t bytes);
size_t GetMemRepresented() const;
private:
void TrackMemoryAllocatedChange(int64_t delta);
MemoryTracker* const memory_tracker_;
size_t mem_represented_ GUARDED_BY(lock_) = 0;
mutable base::Lock lock_;
scoped_refptr<base::SequencedTaskRunner> task_runner_;
base::WeakPtrFactory<MemoryTypeTracker> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(MemoryTypeTracker);
};
} // namespace gpu
#endif // GPU_COMMAND_BUFFER_SERVICE_MEMORY_TRACKING_H_
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