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62 lines
1.5 KiB
C
62 lines
1.5 KiB
C
/* $Id: getrusage.c,v 1.3 1997/12/19 13:34:27 scrappy Exp $ */
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#include <math.h> /* for pow() prototype */
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#include <errno.h>
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#include "rusagestub.h"
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#include "port-protos.h"
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#ifdef 0 /* this is from univel port ... how does compiler define? */
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/* same for i386_solaris port ... how does compiler define? */
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/* same for sco port ... how does compiler define? */
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/* same for sparc_solaris port ... how does compiler define? */
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/* same for svr4 port ... how does compiler define? */
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int
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getrusage(int who, struct rusage * rusage)
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{
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struct tms tms;
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register int tick_rate = CLK_TCK; /* ticks per second */
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clock_t u,
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s;
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if (rusage == (struct rusage *) NULL)
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{
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errno = EFAULT;
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return (-1);
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}
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if (times(&tms) < 0)
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{
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/* errno set by times */
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return (-1);
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}
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switch (who)
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{
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case RUSAGE_SELF:
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u = tms.tms_utime;
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s = tms.tms_stime;
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break;
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case RUSAGE_CHILDREN:
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u = tms.tms_cutime;
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s = tms.tms_cstime;
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break;
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default:
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errno = EINVAL;
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return (-1);
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}
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#define TICK_TO_SEC(T, RATE) ((T)/(RATE))
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#define TICK_TO_USEC(T,RATE) (((T)%(RATE)*1000000)/RATE)
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rusage->ru_utime.tv_sec = TICK_TO_SEC(u, tick_rate);
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rusage->ru_utime.tv_usec = TICK_TO_USEC(u, tick_rate);
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rusage->ru_stime.tv_sec = TICK_TO_SEC(s, tick_rate);
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rusage->ru_stime.tv_usec = TICK_TO_USEC(u, tick_rate);
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return (0);
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}
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#endif
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#ifdef 0 /* this is for hpux port ... how does compiler define? */
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getrusage(int who, struct rusage * ru)
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{
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return (syscall(SYS_GETRUSAGE, who, ru));
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}
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#endif
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