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66 lines
1.8 KiB
66 lines
1.8 KiB
//
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// perftimer.cpp
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//
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// MiniDexed - Dexed FM synthesizer for bare metal Raspberry Pi
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// Copyright (C) 2022 The MiniDexed Team
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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//
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#include "perftimer.h"
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#include <iostream>
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CPerformanceTimer::CPerformanceTimer (const char *pName, unsigned nDeadlineMicros)
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: m_Name (pName),
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m_nDeadlineMicros (nDeadlineMicros),
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m_nMaximumMicros (0),
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m_nLastDumpTicks (0)
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{
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}
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void CPerformanceTimer::Start (void)
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{
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m_nStartTicks = CTimer::GetClockTicks ();
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}
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void CPerformanceTimer::Stop (void)
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{
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unsigned nEndTicks = CTimer::GetClockTicks ();
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unsigned nMicros = (nEndTicks - m_nStartTicks) / (CLOCKHZ / 1000000);
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if (nMicros > m_nMaximumMicros)
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{
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m_nMaximumMicros = nMicros;
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}
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}
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void CPerformanceTimer::Dump (unsigned nIntervalTicks)
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{
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unsigned nTicks = CTimer::GetClockTicks ();
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if (nTicks - m_nLastDumpTicks >= nIntervalTicks)
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{
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m_nLastDumpTicks = nTicks;
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unsigned nMaximumMicros = m_nMaximumMicros; // may be overwritten from interrupt
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std::cout << m_Name << ": Maximum duration was " << nMaximumMicros << "us";
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if (m_nDeadlineMicros != 0)
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{
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std::cout << " (" << nMaximumMicros*100 / m_nDeadlineMicros << "%)";
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}
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std::cout << std::endl;
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}
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}
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