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/*
* Copyright 2010, The Android Open Source Project
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "TilesProfiler.h"
#if USE(ACCELERATED_COMPOSITING)
#include <wtf/CurrentTime.h>
#ifdef DEBUG
#include <cutils/log.h>
#include <wtf/text/CString.h>
#undef XLOG
#define XLOG(...) android_printLog(ANDROID_LOG_DEBUG, "TilesProfiler", __VA_ARGS__)
#else
#undef XLOG
#define XLOG(...)
#endif // DEBUG
// Hard limit on amount of frames (and thus memory) profiling can take
#define MAX_PROF_FRAMES 400
namespace WebCore {
TilesProfiler::TilesProfiler()
: m_enabled(false)
{
}
void TilesProfiler::start()
{
m_enabled = true;
m_goodTiles = 0;
m_badTiles = 0;
m_records.clear();
m_time = currentTimeMS();
XLOG("initializing tileprofiling");
}
float TilesProfiler::stop()
{
m_enabled = false;
XLOG("completed tile profiling, observed %d frames", m_records.size());
return (1.0 * m_goodTiles) / (m_goodTiles + m_badTiles);
}
void TilesProfiler::clear()
{
XLOG("clearing tile profiling of its %d frames", m_records.size());
m_records.clear();
}
void TilesProfiler::nextFrame(int l, int t, int r, int b)
{
if (!m_enabled || (m_records.size() > MAX_PROF_FRAMES))
return;
double currentTime = currentTimeMS();
double timeDelta = currentTime - m_time;
m_time = currentTime;
#ifdef DEBUG
if (m_records.size() != 0) {
XLOG("completed tile profiling frame, observed %d tiles. %f ms since last",
m_records[0].size(), timeDelta);
}
#endif // DEBUG
m_records.append(WTF::Vector<TileProfileRecord>());
//first two records designate viewport
m_records.last().append(TileProfileRecord(l, t, true, (int)(timeDelta * 1000)));
m_records.last().append(TileProfileRecord(r, b, true, -1));
}
void TilesProfiler::nextTile(int x, int y, bool isReady, int level, bool inView)
{
if (!m_enabled || (m_records.size() > MAX_PROF_FRAMES))
return;
if (inView) {
if (isReady)
m_goodTiles++;
else
m_badTiles++;
}
m_records.last().append(TileProfileRecord(x, y, isReady, level));
}
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
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