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// Copyright 2012 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/paint_time_counter.h"
namespace cc {
// static
scoped_ptr<PaintTimeCounter> PaintTimeCounter::create() {
return make_scoped_ptr(new PaintTimeCounter());
}
PaintTimeCounter::PaintTimeCounter()
: can_save_paint_time_delta_(false),
can_save_rasterize_time_delta_(false) {
}
void PaintTimeCounter::SavePaintTime(const base::TimeDelta& total_paint_time,
int commit_number) {
if (can_save_paint_time_delta_) {
Entry entry;
entry.commit_number = commit_number;
entry.paint_time = total_paint_time - last_total_paint_time_;
ring_buffer_.SaveToBuffer(entry);
}
last_total_paint_time_ = total_paint_time;
can_save_paint_time_delta_ = true;
}
void PaintTimeCounter::SaveRasterizeTime(
const base::TimeDelta& total_rasterize_time,
int commit_number) {
if (can_save_rasterize_time_delta_) {
Entry entry = ring_buffer_.MutableReadBuffer(ring_buffer_.BufferSize() - 1);
DCHECK(commit_number == entry.commit_number);
entry.rasterize_time = total_rasterize_time - last_total_rasterize_time_;
}
last_total_rasterize_time_ = total_rasterize_time;
can_save_rasterize_time_delta_ = true;
}
void PaintTimeCounter::GetMinAndMaxPaintTime(base::TimeDelta* min,
base::TimeDelta* max) const {
*min = base::TimeDelta::FromDays(1);
*max = base::TimeDelta();
for (RingBufferType::Iterator it = ring_buffer_.Begin(); it; ++it) {
const base::TimeDelta paint_time = it->total_time();
if (paint_time < *min)
*min = paint_time;
if (paint_time > *max)
*max = paint_time;
}
if (*min > *max)
*min = *max;
}
void PaintTimeCounter::ClearHistory() {
ring_buffer_.Clear();
can_save_paint_time_delta_ = false;
can_save_rasterize_time_delta_ = false;
}
} // namespace cc
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