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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/output/latency_info_swap_promise.h"
#include "base/logging.h"
#include "base/trace_event/trace_event.h"
namespace {
ui::LatencyComponentType DidNotSwapReasonToLatencyComponentType(
cc::SwapPromise::DidNotSwapReason reason) {
switch (reason) {
case cc::SwapPromise::ACTIVATION_FAILS:
case cc::SwapPromise::SWAP_FAILS:
return ui::INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT;
case cc::SwapPromise::COMMIT_FAILS:
return ui::INPUT_EVENT_LATENCY_TERMINATED_COMMIT_FAILED_COMPONENT;
case cc::SwapPromise::COMMIT_NO_UPDATE:
return ui::INPUT_EVENT_LATENCY_TERMINATED_COMMIT_NO_UPDATE_COMPONENT;
}
NOTREACHED() << "Unhandled DidNotSwapReason.";
return ui::INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT;
}
} // namespace
namespace cc {
LatencyInfoSwapPromise::LatencyInfoSwapPromise(const ui::LatencyInfo& latency)
: latency_(latency) {
}
LatencyInfoSwapPromise::~LatencyInfoSwapPromise() {
}
void LatencyInfoSwapPromise::DidSwap(CompositorFrameMetadata* metadata) {
DCHECK(!latency_.terminated());
metadata->latency_info.push_back(latency_);
}
void LatencyInfoSwapPromise::DidNotSwap(DidNotSwapReason reason) {
latency_.AddLatencyNumber(DidNotSwapReasonToLatencyComponentType(reason), 0,
0);
// TODO(miletus): Turn this back on once per-event LatencyInfo tracking
// is enabled in GPU side.
// DCHECK(latency_.terminated);
}
int64 LatencyInfoSwapPromise::TraceId() const {
return latency_.trace_id();
}
// Trace the original LatencyInfo of a LatencyInfoSwapPromise
void LatencyInfoSwapPromise::OnCommit() {
TRACE_EVENT_WITH_FLOW1("input,benchmark",
"LatencyInfo.Flow",
TRACE_ID_DONT_MANGLE(TraceId()),
TRACE_EVENT_FLAG_FLOW_IN | TRACE_EVENT_FLAG_FLOW_OUT,
"step", "HandleInputEventMainCommit");
}
} // namespace cc
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