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(experimental) implement getrusage via times if not found

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tg
2009-04-03 09:39:07 +00:00
parent d6f6834d0d
commit 56c6e384e6
6 changed files with 80 additions and 24 deletions
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39
misc.c
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@ -2,11 +2,14 @@
/* $OpenBSD: path.c,v 1.12 2005/03/30 17:16:37 deraadt Exp $ */
#include "sh.h"
#if !HAVE_GETRUSAGE
#include <sys/times.h>
#endif
#if HAVE_GRP_H
#include <grp.h>
#endif
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.99 2009/03/22 18:09:16 tg Exp $");
__RCSID("$MirOS: src/bin/mksh/misc.c,v 1.100 2009/04/03 09:39:06 tg Exp $");
#undef USE_CHVT
#if defined(TIOCSCTTY) && !defined(MKSH_SMALL)
@ -1465,3 +1468,37 @@ strdup_(const char *src, Area *ap)
return (src == NULL ? NULL : strndup_(src, strlen(src), ap));
}
#endif
#if !HAVE_GETRUSAGE
#define INVTCK(r,t) do { \
r.tv_usec = ((t) % (1000000 / CLK_TCK)) * (1000000 / CLK_TCK); \
r.tv_sec = (t) / CLK_TCK; \
} while (/* CONSTCOND */ 0)
int
getrusage(int what, struct rusage *ru)
{
struct tms tms;
clock_t u, s;
if (/* ru == NULL || */ times(&tms) == (clock_t)-1)
return (-1);
switch (what) {
case RUSAGE_SELF:
u = tms.tms_utime;
s = tms.tms_stime;
break;
case RUSAGE_CHILDREN:
u = tms.tms_cutime;
s = tms.tms_cstime;
break;
default:
errno = EINVAL;
return (-1);
}
INVTCK(r->ru_utime, u);
INVTCK(r->ru_stime, s);
return (0);
}
#endif