48 lines
1.1 KiB
C++
48 lines
1.1 KiB
C++
/**
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* @file clockWC.cpp
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* Definitions for a simple class that implements an Ansi C wall clock timer
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* (see \ref Cantera::clockWC).
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*/
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/*
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* Copyright 2004 Sandia Corporation. Under the terms of Contract
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* DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government
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* retains certain rights in this software.
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* See file License.txt for licensing information.
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*/
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#include <time.h>
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#include "cantera/base/clockWC.h"
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namespace Cantera
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{
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clockWC::clockWC() :
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last_num_ticks(clock()),
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clock_rollovers(0u),
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start_ticks(0),
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inv_clocks_per_sec(1./(double)CLOCKS_PER_SEC),
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clock_width((double)(1L<<((int)sizeof(clock_t)*8-2))*4./(double)CLOCKS_PER_SEC)
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{
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start_ticks = last_num_ticks;
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}
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double clockWC::start()
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{
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start_ticks = last_num_ticks = clock();
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clock_rollovers = 0u;
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return 0.0;
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}
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double clockWC::secondsWC()
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{
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clock_t num_ticks = clock();
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if (num_ticks < last_num_ticks) {
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clock_rollovers++;
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}
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double value = (num_ticks - start_ticks) * inv_clocks_per_sec;
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if (clock_rollovers) {
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value += clock_rollovers * clock_width;
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}
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last_num_ticks = num_ticks;
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return value;
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}
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}
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