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/* resuse.h - declarations for child process resource use library
Copyright (C) 1993, 1996 Free Software Foundation, Inc.
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, 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. */
#ifndef _RESUSE_H
#define _RESUSE_H 1
#if HAVE_TIMEVAL
# include <sys/time.h>
#else
/* High resolution clock structure. */
struct timeval
{
long tv_sec; /* Seconds. */
long tv_usec; /* Microseconds. */
};
#endif
#if HAVE_SYS_RUSAGE_H
/* This rusage structure measures nanoseconds instead of microseconds. */
# define TV_MSEC tv_nsec / 1000000
# include <sys/rusage.h>
#else
# define TV_MSEC tv_usec / 1000
# if HAVE_WAIT3
# include <sys/resource.h>
# else
/* Process resource usage structure. */
struct rusage
{
struct timeval ru_utime; /* User time used. */
struct timeval ru_stime; /* System time used. */
int ru_maxrss, ru_ixrss, ru_idrss, ru_isrss,
ru_minflt, ru_majflt, ru_nswap, ru_inblock,
ru_oublock, ru_msgsnd, ru_msgrcv, ru_nsignals,
ru_nvcsw, ru_nivcsw;
};
# endif
#endif
/* Information on the resources used by a child process. */
typedef struct
{
int waitstatus;
struct rusage ru;
struct timeval start, elapsed; /* Wallclock time of process. */
} RESUSE;
/* Prepare to measure a child process. */
void resuse_start PARAMS ((RESUSE *resp));
/* Wait for and fill in data on child process PID. */
int resuse_end PARAMS ((pid_t pid, RESUSE *resp));
#endif /* _RESUSE_H */
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