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- /* proctm.c
- Get the time spent in the process.
-
- Copyright (C) 1992, 1993 Ian Lance Taylor
-
- This file is part of the Taylor UUCP package.
-
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- The author of the program may be contacted at ian@airs.com or
- c/o Cygnus Support, 48 Grove Street, Somerville, MA 02144.
- */
-
- #include "uucp.h"
-
- #include "sysdep.h"
- #include "system.h"
-
- #if HAVE_SYS_PARAM_H
- #include <sys/param.h>
- #endif
-
- #if HAVE_LIMITS_H
- #include <limits.h>
- #endif
-
- /* Prefer gettimeofday to ftime to times. */
-
- #if HAVE_GETTIMEOFDAY || HAVE_FTIME
- #undef HAVE_TIMES
- #define HAVE_TIMES 0
- #endif
-
- #if HAVE_GETTIMEOFDAY
- #undef HAVE_FTIME
- #define HAVE_FTIME 0
- #endif
-
- #if HAVE_TIME_H && (TIME_WITH_SYS_TIME || ! HAVE_GETTIMEOFDAY)
- #include <time.h>
- #endif
-
- #if HAVE_GETTIMEOFDAY
- #include <sys/time.h>
- #endif
-
- #if HAVE_FTIME
- #include <sys/timeb.h>
- #endif
-
- #if HAVE_TIMES
-
- #if HAVE_SYS_TIMES_H
- #include <sys/times.h>
- #endif
-
- #if TIMES_DECLARATION_OK
- /* We use a macro to protect this because times really returns clock_t
- and on some systems, such as Ultrix 4.0, clock_t is int. We don't
- leave it out entirely because on some systems, such as System III,
- the declaration is necessary for correct compilation. */
- #ifndef times
- extern long times ();
- #endif
- #endif /* TIMES_DECLARATION_OK */
-
- #ifdef _SC_CLK_TCK
- #define HAVE_SC_CLK_TCK 1
- #else
- #define HAVE_SC_CLK_TCK 0
- #endif
-
- /* TIMES_TICK may have been set in policy.h, or we may be able to get
- it using sysconf. If neither is the case, try to find a useful
- definition from the system header files. */
- #if TIMES_TICK == 0 && (! HAVE_SYSCONF || ! HAVE_SC_CLK_TCK)
- #ifdef CLK_TCK
- #undef TIMES_TICK
- #define TIMES_TICK CLK_TCK
- #else /* ! defined (CLK_TCK) */
- #ifdef HZ
- #undef TIMES_TICK
- #define TIMES_TICK HZ
- #endif /* defined (HZ) */
- #endif /* ! defined (CLK_TCK) */
- #endif /* TIMES_TICK == 0 && (! HAVE_SYSCONF || ! HAVE_SC_CLK_TCK) */
-
- #endif /* HAVE_TIMES */
-
- #ifndef time
- extern time_t time ();
- #endif
- #if HAVE_SYSCONF
- #ifndef sysconf
- extern long sysconf ();
- #endif
- #endif
-
- /* Get the time in seconds and microseconds; this need only work
- within the process when called from the system independent code.
- It is also called by ixsysdep_time. */
-
- long
- ixsysdep_process_time (pimicros)
- long *pimicros;
- {
- #if HAVE_GETTIMEOFDAY
- struct timeval stime;
- struct timezone stz;
-
- (void) gettimeofday (&stime, &stz);
- if (pimicros != NULL)
- *pimicros = (long) stime.tv_usec;
- return (long) stime.tv_sec;
- #endif /* HAVE_GETTIMEOFDAY */
-
- #if HAVE_FTIME
- static boolean fbad;
-
- if (! fbad)
- {
- struct timeb stime;
- static struct timeb slast;
-
- (void) ftime (&stime);
-
- /* On some systems, such as SCO 3.2.2, ftime can go backwards in
- time. If we detect this, we switch to using time. */
- if (slast.time != 0
- && (stime.time < slast.time
- || (stime.time == slast.time &&
- stime.millitm < slast.millitm)))
- fbad = TRUE;
- else
- {
- slast = stime;
- if (pimicros != NULL)
- *pimicros = (long) stime.millitm * (long) 1000;
- return (long) stime.time;
- }
- }
-
- if (pimicros != NULL)
- *pimicros = 0;
- return (long) time ((time_t *) NULL);
- #endif /* HAVE_FTIME */
-
- #if HAVE_TIMES
- struct tms s;
- long i;
- static int itick;
-
- if (itick == 0)
- {
- #if TIMES_TICK == 0
- #if HAVE_SYSCONF && HAVE_SC_CLK_TCK
- itick = (int) sysconf (_SC_CLK_TCK);
- #else /* ! HAVE_SYSCONF || ! HAVE_SC_CLK_TCK */
- const char *z;
-
- z = getenv ("HZ");
- if (z != NULL)
- itick = (int) strtol (z, (char **) NULL, 10);
-
- /* If we really couldn't get anything, just use 60. */
- if (itick == 0)
- itick = 60;
- #endif /* ! HAVE_SYSCONF || ! HAVE_SC_CLK_TCK */
- #else /* TIMES_TICK != 0 */
- itick = TIMES_TICK;
- #endif /* TIMES_TICK == 0 */
- }
-
- i = (long) times (&s);
- if (pimicros != NULL)
- *pimicros = (i % (long) itick) * ((long) 1000000 / (long) itick);
- return i / (long) itick;
- #endif /* HAVE_TIMES */
-
- #if ! HAVE_GETTIMEOFDAY && ! HAVE_FTIME && ! HAVE_TIMES
- if (pimicros != NULL)
- *pimicros = 0;
- return (long) time ((time_t *) NULL);
- #endif /* ! HAVE_GETTIMEOFDAY && ! HAVE_FTIME && ! HAVE_TIMES */
- }
-