blob: fd8cb82a9ba8445944fe82f4875f4f707c922a5e [file] [log] [blame]
/*
* Copyright 2017 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 <layerproto/LayerProtoHeader.h>
#include <utils/Errors.h>
#include <utils/String8.h>
#include <memory>
#include <mutex>
using namespace android::surfaceflinger;
namespace android {
/*
* SurfaceTracing records layer states during surface flinging.
*/
class SurfaceTracing {
public:
void enable();
status_t disable();
bool isEnabled() const;
void traceLayers(const char* where, LayersProto);
void dump(String8& result) const;
private:
static constexpr auto DEFAULT_FILENAME = "/data/misc/wmtrace/layers_trace.pb";
status_t writeProtoFileLocked();
bool mEnabled = false;
std::string mOutputFileName = DEFAULT_FILENAME;
mutable std::mutex mTraceMutex;
std::unique_ptr<LayersTraceFileProto> mTrace;
};
} // namespace android