83 lines
1.7 KiB
C++
83 lines
1.7 KiB
C++
/* $Id$ */
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/*
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* This file is part of OpenTTD.
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* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
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* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
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*/
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/** @file pf_performance_timer.hpp Performance timer for pathfinders. */
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#ifndef PF_PERFORMANCE_TIMER_HPP
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#define PF_PERFORMANCE_TIMER_HPP
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extern uint64 ottd_rdtsc();
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struct CPerformanceTimer
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{
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int64 m_start;
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int64 m_acc;
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CPerformanceTimer() : m_start(0), m_acc(0) {}
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FORCEINLINE void Start()
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{
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m_start = QueryTime();
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}
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FORCEINLINE void Stop()
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{
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m_acc += QueryTime() - m_start;
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}
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FORCEINLINE int Get(int64 coef)
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{
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return (int)(m_acc * coef / QueryFrequency());
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}
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FORCEINLINE int64 QueryTime()
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{
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return ottd_rdtsc();
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}
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FORCEINLINE int64 QueryFrequency()
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{
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return ((int64)2200 * 1000000);
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}
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};
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struct CPerfStartReal
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{
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CPerformanceTimer *m_pperf;
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FORCEINLINE CPerfStartReal(CPerformanceTimer& perf) : m_pperf(&perf)
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{
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if (m_pperf != NULL) m_pperf->Start();
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}
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FORCEINLINE ~CPerfStartReal()
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{
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Stop();
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}
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FORCEINLINE void Stop()
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{
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if (m_pperf != NULL) {
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m_pperf->Stop();
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m_pperf = NULL;
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}
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}
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};
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struct CPerfStartFake
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{
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FORCEINLINE CPerfStartFake(CPerformanceTimer& perf) {}
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FORCEINLINE ~CPerfStartFake() {}
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FORCEINLINE void Stop() {}
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};
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typedef CPerfStartFake CPerfStart;
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#endif /* PF_PERFORMANCE_TIMER_HPP */
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