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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/trees/latency_info_swap_promise.h"
#include <stdint.h>
#include "base/check.h"
#include "base/task/common/task_annotator.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
#include "base/tracing/protos/chrome_track_event.pbzero.h"
#include "services/tracing/public/cpp/perfetto/macros.h"
#include "ui/latency/latency_info.h"
namespace cc {
LatencyInfoSwapPromise::LatencyInfoSwapPromise(const ui::LatencyInfo& latency)
: latency_(latency) {}
LatencyInfoSwapPromise::~LatencyInfoSwapPromise() = default;
void LatencyInfoSwapPromise::WillSwap(viz::CompositorFrameMetadata* metadata) {
DCHECK(!latency_.terminated());
metadata->latency_info.push_back(latency_);
}
void LatencyInfoSwapPromise::DidSwap() {}
SwapPromise::DidNotSwapAction LatencyInfoSwapPromise::DidNotSwap(
DidNotSwapReason reason,
base::TimeTicks ts) {
latency_.Terminate();
// TODO(miletus): Turn this back on once per-event LatencyInfo tracking
// is enabled in GPU side.
// DCHECK(latency_.terminated);
return DidNotSwapAction::BREAK_PROMISE;
}
int64_t LatencyInfoSwapPromise::GetTraceId() const {
return latency_.trace_id();
}
// Trace the original LatencyInfo of a LatencyInfoSwapPromise
void LatencyInfoSwapPromise::OnCommit() {
using perfetto::protos::pbzero::TrackEvent;
int64_t trace_id = GetTraceId();
TRACE_EVENT("input,benchmark,latencyInfo", "LatencyInfo.Flow",
[&](perfetto::EventContext ctx) {
base::TaskAnnotator::EmitTaskTimingDetails(ctx);
ui::LatencyInfo::FillTraceEvent(
ctx, trace_id,
perfetto::protos::pbzero::ChromeLatencyInfo2::Step::
STEP_HANDLE_INPUT_EVENT_MAIN_COMMIT);
});
}
} // namespace cc
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