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/*
* Copyright 2019 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.
*/
// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wconversion"
#undef LOG_TAG
#define LOG_TAG "FrameTracer"
#define ATRACE_TAG ATRACE_TAG_GRAPHICS
#include "FrameTracer.h"
#include <android-base/stringprintf.h>
#include <perfetto/common/builtin_clock.pbzero.h>
#include <algorithm>
#include <mutex>
PERFETTO_DEFINE_DATA_SOURCE_STATIC_MEMBERS(android::FrameTracer::FrameTracerDataSource);
namespace android {
void FrameTracer::initialize() {
std::call_once(mInitializationFlag, [this]() {
perfetto::TracingInitArgs args;
args.backends = perfetto::kSystemBackend;
perfetto::Tracing::Initialize(args);
registerDataSource();
});
}
void FrameTracer::registerDataSource() {
perfetto::DataSourceDescriptor dsd;
dsd.set_name(kFrameTracerDataSource);
FrameTracerDataSource::Register(dsd);
}
void FrameTracer::traceNewLayer(int32_t layerId, const std::string& layerName) {
FrameTracerDataSource::Trace([this, layerId, &layerName](FrameTracerDataSource::TraceContext) {
if (mTraceTracker.find(layerId) == mTraceTracker.end()) {
std::lock_guard<std::mutex> lock(mTraceMutex);
mTraceTracker[layerId].layerName = layerName;
}
});
}
void FrameTracer::traceTimestamp(int32_t layerId, uint64_t bufferID, uint64_t frameNumber,
nsecs_t timestamp, FrameEvent::BufferEventType type,
nsecs_t duration) {
FrameTracerDataSource::Trace([this, layerId, bufferID, frameNumber, timestamp, type,
duration](FrameTracerDataSource::TraceContext ctx) {
std::lock_guard<std::mutex> lock(mTraceMutex);
if (mTraceTracker.find(layerId) == mTraceTracker.end()) {
return;
}
// Handle any pending fences for this buffer.
tracePendingFencesLocked(ctx, layerId, bufferID);
// Complete current trace.
traceLocked(ctx, layerId, bufferID, frameNumber, timestamp, type, duration);
});
}
void FrameTracer::traceFence(int32_t layerId, uint64_t bufferID, uint64_t frameNumber,
const std::shared_ptr<FenceTime>& fence,
FrameEvent::BufferEventType type, nsecs_t startTime) {
FrameTracerDataSource::Trace([this, layerId, bufferID, frameNumber, &fence, type,
startTime](FrameTracerDataSource::TraceContext ctx) {
const nsecs_t signalTime = fence->getSignalTime();
if (signalTime != Fence::SIGNAL_TIME_INVALID) {
std::lock_guard<std::mutex> lock(mTraceMutex);
if (mTraceTracker.find(layerId) == mTraceTracker.end()) {
return;
}
// Handle any pending fences for this buffer.
tracePendingFencesLocked(ctx, layerId, bufferID);
if (signalTime != Fence::SIGNAL_TIME_PENDING) {
traceSpanLocked(ctx, layerId, bufferID, frameNumber, type, startTime, signalTime);
} else {
mTraceTracker[layerId].pendingFences[bufferID].push_back(
{.frameNumber = frameNumber,
.type = type,
.fence = fence,
.startTime = startTime});
}
}
});
}
void FrameTracer::tracePendingFencesLocked(FrameTracerDataSource::TraceContext& ctx,
int32_t layerId, uint64_t bufferID) {
if (mTraceTracker[layerId].pendingFences.count(bufferID)) {
auto& pendingFences = mTraceTracker[layerId].pendingFences[bufferID];
for (size_t i = 0; i < pendingFences.size(); ++i) {
auto& pendingFence = pendingFences[i];
nsecs_t signalTime = Fence::SIGNAL_TIME_INVALID;
if (pendingFence.fence && pendingFence.fence->isValid()) {
signalTime = pendingFence.fence->getSignalTime();
if (signalTime == Fence::SIGNAL_TIME_PENDING) {
continue;
}
}
if (signalTime != Fence::SIGNAL_TIME_INVALID &&
systemTime() - signalTime < kFenceSignallingDeadline) {
traceSpanLocked(ctx, layerId, bufferID, pendingFence.frameNumber, pendingFence.type,
pendingFence.startTime, signalTime);
}
pendingFences.erase(pendingFences.begin() + i);
--i;
}
}
}
void FrameTracer::traceLocked(FrameTracerDataSource::TraceContext& ctx, int32_t layerId,
uint64_t bufferID, uint64_t frameNumber, nsecs_t timestamp,
FrameEvent::BufferEventType type, nsecs_t duration) {
auto packet = ctx.NewTracePacket();
packet->set_timestamp_clock_id(perfetto::protos::pbzero::BUILTIN_CLOCK_MONOTONIC);
packet->set_timestamp(timestamp);
auto* event = packet->set_graphics_frame_event()->set_buffer_event();
event->set_buffer_id(static_cast<uint32_t>(bufferID));
if (frameNumber != UNSPECIFIED_FRAME_NUMBER) {
event->set_frame_number(frameNumber);
}
event->set_type(type);
if (mTraceTracker.find(layerId) != mTraceTracker.end() &&
!mTraceTracker[layerId].layerName.empty()) {
const std::string& layerName = mTraceTracker[layerId].layerName;
event->set_layer_name(layerName.c_str(), layerName.size());
}
if (duration > 0) {
event->set_duration_ns(duration);
}
}
void FrameTracer::traceSpanLocked(FrameTracerDataSource::TraceContext& ctx, int32_t layerId,
uint64_t bufferID, uint64_t frameNumber,
FrameEvent::BufferEventType type, nsecs_t startTime,
nsecs_t endTime) {
nsecs_t timestamp = endTime;
nsecs_t duration = 0;
if (startTime > 0 && startTime < endTime) {
timestamp = startTime;
duration = endTime - startTime;
}
traceLocked(ctx, layerId, bufferID, frameNumber, timestamp, type, duration);
}
void FrameTracer::onDestroy(int32_t layerId) {
std::lock_guard<std::mutex> traceLock(mTraceMutex);
mTraceTracker.erase(layerId);
}
std::string FrameTracer::miniDump() {
std::string result = "FrameTracer miniDump:\n";
std::lock_guard<std::mutex> lock(mTraceMutex);
android::base::StringAppendF(&result, "Number of layers currently being traced is %zu\n",
mTraceTracker.size());
return result;
}
} // namespace android
// TODO(b/129481165): remove the #pragma below and fix conversion issues
#pragma clang diagnostic pop // ignored "-Wconversion"
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