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Speccy ClassiX 1998
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gcc
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ixemulsrc.lha
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ixemul-41.4
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gen_library
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clock.c
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1995-05-17
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/*
* Copyright (c) 1989 The Regents of the University of California.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted
* provided that: (1) source distributions retain this entire copyright
* notice and comment, and (2) distributions including binaries display
* the following acknowledgement: ``This product includes software
* developed by the University of California, Berkeley and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software. Neither the name of the University nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)clock.c 5.3 (Berkeley) 6/1/90";
#endif /* LIBC_SCCS and not lint */
#define KERNEL
#include "ixemul.h"
#include <machine/limits.h>
#include <sys/time.h>
#include <sys/resource.h>
time_t
clock()
{
struct rusage rusage;
time_t val;
if (syscall (SYS_getrusage, RUSAGE_SELF, &rusage))
return ((time_t) -1);
val = (rusage.ru_utime.tv_sec + rusage.ru_stime.tv_sec) * CLK_TCK;
/*
* Convert usec to clock ticks; could do (usec * CLK_TCK) / 1000000,
* but this would overflow if we switch to nanosec.
*/
val += (rusage.ru_utime.tv_usec + rusage.ru_stime.tv_usec) /
(1000000 / CLK_TCK);
return (val);
}