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/*
* Copyright 2021 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <android-base/thread_annotations.h>
#include <layerproto/LayerProtoHeader.h>
#include <utils/Errors.h>
#include <utils/StrongPointer.h>
#include <utils/Timers.h>
#include <memory>
#include <mutex>
using namespace android::surfaceflinger;
namespace android {
template <typename FileProto, typename EntryProto>
class RingBuffer;
class SurfaceFlinger;
/*
* LayerTracing records layer states during surface flinging. Manages tracing state and
* configuration.
*/
class LayerTracing {
public:
LayerTracing(SurfaceFlinger& flinger);
~LayerTracing();
bool enable();
bool disable(std::string filename = FILE_NAME);
bool isEnabled() const;
status_t writeToFile();
LayersTraceFileProto createTraceFileProto() const;
void notify(bool visibleRegionDirty, int64_t time);
enum : uint32_t {
TRACE_INPUT = 1 << 1,
TRACE_COMPOSITION = 1 << 2,
TRACE_EXTRA = 1 << 3,
TRACE_HWC = 1 << 4,
TRACE_BUFFERS = 1 << 5,
TRACE_ALL = TRACE_INPUT | TRACE_COMPOSITION | TRACE_EXTRA,
};
void setTraceFlags(uint32_t flags);
bool flagIsSet(uint32_t flags) const;
void setBufferSize(size_t bufferSizeInBytes);
void dump(std::string&) const;
private:
static constexpr auto FILE_NAME = "/data/misc/wmtrace/layers_trace.winscope";
SurfaceFlinger& mFlinger;
uint32_t mFlags = TRACE_INPUT;
mutable std::mutex mTraceLock;
bool mEnabled GUARDED_BY(mTraceLock) = false;
std::unique_ptr<RingBuffer<LayersTraceFileProto, LayersTraceProto>> mBuffer
GUARDED_BY(mTraceLock);
size_t mBufferSizeInBytes GUARDED_BY(mTraceLock) = 20 * 1024 * 1024;
};
} // namespace android
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