mirror of https://gitlab.com/QEF/q-e.git
60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
/*
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Copyright (C) 2002-2006 Quantum ESPRESSO group
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This file is distributed under the terms of the
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GNU General Public License. See the file `License'
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in the root directory of the present distribution,
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or http://www.gnu.org/copyleft/gpl.txt .
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*/
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#if defined(_WIN32)
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#include <windows.h>
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#include <sys/time.h>
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#include <stdint.h>
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#else
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif
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#include <unistd.h>
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double cclock()
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/* Return the second elapsed since Epoch (00:00:00 UTC, January 1, 1970)
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*/
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{
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struct timeval tmp;
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double sec;
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gettimeofday( &tmp, (struct timezone *)0 );
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sec = tmp.tv_sec + ((double)tmp.tv_usec)/1000000.0;
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return sec;
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}
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double scnds ( )
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/* Return the cpu time associated to the current process
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*/
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{
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double sec=0.0;
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#if defined(_WIN32)
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// from MSDN docs.
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FILETIME ct,et,kt,ut;
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union { FILETIME ft; uint64_t ui; } cpu;
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if (GetProcessTimes(GetCurrentProcess(),&ct,&et,&kt,&ut)) {
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cpu.ft = ut;
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sec = cpu.ui * 0.0000001;
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}
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#else
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static struct rusage T;
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getrusage(RUSAGE_SELF, &T);
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sec = ((double)T.ru_utime.tv_sec + ((double)T.ru_utime.tv_usec)/1000000.0);
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#endif
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return sec;
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}
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