/*	@(#)resource.h 2.12 91/05/22 SMI; from UCB 4.1 83/02/10	*/

#ifndef _sys_resource_h
#define _sys_resource_h

#include <sys/time.h>

#ifdef __cplusplus
extern "C" {
#endif

/*
 * Process priority specifications to get/setpriority.
 */
#define	PRIO_MIN	-20
#define	PRIO_MAX	20

#define	PRIO_PROCESS	0
#define	PRIO_PGRP	1
#define	PRIO_USER	2

/*
 * Resource utilization information.
 */

#define	RUSAGE_SELF	0
#define	RUSAGE_CHILDREN	-1

struct	rusage {
	struct timeval ru_utime;	/* user time used */
	struct timeval ru_stime;	/* system time used */
	long	ru_maxrss;		/* maximum resident set size */
	long	ru_ixrss;		/* integral shared memory size */
	long	ru_idrss;		/* integral unshared data size */
	long	ru_isrss;		/* integral unshared stack size */
	long	ru_minflt;		/* page reclaims */
	long	ru_majflt;		/* page faults */
	long	ru_nswap;		/* swaps */
	long	ru_inblock;		/* block input operations */
	long	ru_oublock;		/* block output operations */
	long	ru_msgsnd;		/* messages sent */
	long	ru_msgrcv;		/* messages received */
	long	ru_nsignals;		/* signals received */
	long	ru_nvcsw;		/* voluntary context switches */
	long	ru_nivcsw;		/* involuntary " */
};

/*
 * Resource limits
 */
#define RLIMIT_CPU      0        /* CPU time in ms */
#define RLIMIT_FSIZE    1        /* Maximum filesize */
#define RLIMIT_DATA     2        /* max data size */
#define RLIMIT_STACK    3        /* max stack size */
#define RLIMIT_CORE     4        /* max core file size */
#define RLIMIT_RSS      5        /* max resident set size */
#define RLIMIT_NPROC    6        /* max number of processes */
#define RLIMIT_NOFILE   7        /* max number of open files */
#define RLIMIT_MEMLOCK  8        /* max locked-in-memory address space */
#define RLIMIT_AS       9        /* address space limit */
#define RLIMIT_LOCKS    10       /* maximum file locks held */

#define RLIM_NLIMITS    11

#define RLIM_INFINITY  (~0UL)

struct rlimit {
	unsigned long	rlim_cur;   /* current (soft) limit */
	unsigned long	rlim_max;	/* maximum value for rlim_cur */
};

/* Return resource usage information on process indicated by WHO
   and put it in *USAGE.  Returns 0 for success, -1 for failure.  */
extern int getrusage (int __who, struct rusage *__usage);

#ifdef __cplusplus
}
#endif

#endif /*!_sys_resource_h*/
