24 lines
476 B
C
Executable File
24 lines
476 B
C
Executable File
#pragma ident "@(#)clock.c 1.2 92/07/20 SMI" /* from S5R2 1.1 */
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/*LINTLIBRARY*/
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#include <sys/types.h>
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#include <sys/times.h>
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#include <sys/param.h> /* for HZ (clock frequency in Hz) */
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#define TIMES(B) (B.tms_utime+B.tms_stime+B.tms_cutime+B.tms_cstime)
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extern long times();
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static long first;
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long
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clock()
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{
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struct tms buffer;
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if (times(&buffer) == -1L)
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return (0L);
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if (first == 0L)
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first = TIMES(buffer);
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return ((TIMES(buffer) - first) * (1000000L/HZ));
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}
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