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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.
*/
#undef LOG_TAG
#define LOG_TAG "LayerTracing"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include <SurfaceFlinger.h>
#include <android-base/stringprintf.h>
#include <log/log.h>
#include <utils/SystemClock.h>
#include <utils/Trace.h>
#include "LayerTracing.h"
#include "RingBuffer.h"
namespace android {
LayerTracing::LayerTracing(SurfaceFlinger& flinger) : mFlinger(flinger) {
mBuffer = std::make_unique<RingBuffer<LayersTraceFileProto, LayersTraceProto>>();
}
LayerTracing::~LayerTracing() = default;
bool LayerTracing::enable() {
std::scoped_lock lock(mTraceLock);
if (mEnabled) {
return false;
}
mBuffer->setSize(mBufferSizeInBytes);
mEnabled = true;
return true;
}
bool LayerTracing::disable(std::string filename) {
std::scoped_lock lock(mTraceLock);
if (!mEnabled) {
return false;
}
mEnabled = false;
LayersTraceFileProto fileProto = createTraceFileProto();
mBuffer->writeToFile(fileProto, filename);
mBuffer->reset();
return true;
}
bool LayerTracing::isEnabled() const {
std::scoped_lock lock(mTraceLock);
return mEnabled;
}
status_t LayerTracing::writeToFile() {
std::scoped_lock lock(mTraceLock);
if (!mEnabled) {
return STATUS_OK;
}
LayersTraceFileProto fileProto = createTraceFileProto();
return mBuffer->writeToFile(fileProto, FILE_NAME);
}
void LayerTracing::setTraceFlags(uint32_t flags) {
std::scoped_lock lock(mTraceLock);
mFlags = flags;
}
void LayerTracing::setBufferSize(size_t bufferSizeInBytes) {
std::scoped_lock lock(mTraceLock);
mBufferSizeInBytes = bufferSizeInBytes;
}
bool LayerTracing::flagIsSet(uint32_t flags) const {
return (mFlags & flags) == flags;
}
LayersTraceFileProto LayerTracing::createTraceFileProto() const {
LayersTraceFileProto fileProto;
fileProto.set_magic_number(uint64_t(LayersTraceFileProto_MagicNumber_MAGIC_NUMBER_H) << 32 |
LayersTraceFileProto_MagicNumber_MAGIC_NUMBER_L);
return fileProto;
}
void LayerTracing::dump(std::string& result) const {
std::scoped_lock lock(mTraceLock);
base::StringAppendF(&result, "Tracing state: %s\n", mEnabled ? "enabled" : "disabled");
mBuffer->dump(result);
}
void LayerTracing::notify(bool visibleRegionDirty, int64_t time) {
std::scoped_lock lock(mTraceLock);
if (!mEnabled) {
return;
}
if (!visibleRegionDirty && !flagIsSet(LayerTracing::TRACE_BUFFERS)) {
return;
}
ATRACE_CALL();
LayersTraceProto entry;
entry.set_elapsed_realtime_nanos(time);
const char* where = visibleRegionDirty ? "visibleRegionsDirty" : "bufferLatched";
entry.set_where(where);
LayersProto layers(mFlinger.dumpDrawingStateProto(mFlags));
if (flagIsSet(LayerTracing::TRACE_EXTRA)) {
mFlinger.dumpOffscreenLayersProto(layers);
}
entry.mutable_layers()->Swap(&layers);
if (flagIsSet(LayerTracing::TRACE_HWC)) {
std::string hwcDump;
mFlinger.dumpHwc(hwcDump);
entry.set_hwc_blob(hwcDump);
}
if (!flagIsSet(LayerTracing::TRACE_COMPOSITION)) {
entry.set_excludes_composition_state(true);
}
mFlinger.dumpDisplayProto(entry);
mBuffer->emplace(std::move(entry));
}
} // namespace android
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