resource.h

/*
 * Copyright (c) 2004, 2008
 *      The President and Fellows of Harvard College.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE UNIVERSITY OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef _KERN_RESOURCE_H_
#define _KERN_RESOURCE_H_

/*
 * Definitions for resource usage and limits.
 *
 * Not very important.
 */


/* priorities for setpriority() */
#define PRIO_MIN        (-20)
#define PRIO_MAX        20

/* "which" codes for setpriority() */
#define PRIO_PROCESS    0
#define PRIO_PGRP       1
#define PRIO_USER       2

/* flags for getrusage() */
#define RUSAGE_SELF     0
#define RUSAGE_CHILDREN (-1)

struct rusage {
        struct timeval ru_utime;
        struct timeval ru_stime;
        __size_t ru_maxrss;             /* maximum RSS during lifespan (kb) */
        __counter_t ru_ixrss;           /* text memory usage (kb-ticks) */
        __counter_t ru_idrss;           /* data memory usage (kb-ticks) */
        __counter_t ru_isrss;           /* stack memory usage (kb-ticks) */
        __counter_t ru_minflt;          /* minor VM faults (count) */
        __counter_t ru_majflt;          /* major VM faults (count) */
        __counter_t ru_nswap;           /* whole-process swaps (count) */
        __counter_t ru_inblock;         /* file blocks read (count) */
        __counter_t ru_oublock;         /* file blocks written (count) */
        __counter_t ru_msgrcv;          /* socket/pipe packets rcv'd (count) */
        __counter_t ru_msgsnd;          /* socket/pipe packets sent (count) */
        __counter_t ru_nsignals;        /* signals delivered (count) */
        __counter_t ru_nvcsw;           /* voluntary context switches (count)*/
        __counter_t ru_nivcsw;          /* involuntary ditto (count) */
};

/* limit codes for getrusage/setrusage */

#define RLIMIT_NPROC            0       /* max procs per user (count) */
#define RLIMIT_NOFILE           1       /* max open files per proc (count) */
#define RLIMIT_CPU              2       /* cpu usage (seconds) */
#define RLIMIT_DATA             3       /* max .data/sbrk size (bytes) */
#define RLIMIT_STACK            4       /* max stack size (bytes) */
#define RLIMIT_MEMLOCK          5       /* max locked memory region (bytes) */
#define RLIMIT_RSS              6       /* max RSS (bytes) */
#define RLIMIT_CORE             7       /* core file size (bytes) */
#define RLIMIT_FSIZE            8       /* max file size (bytes) */
#define __RLIMIT_NUM            9       /* number of limits */

struct rlimit {
        __rlim_t rlim_cur;      /* soft limit */
        __rlim_t rlim_max;      /* hard limit */
};

#define RLIM_INFINITY   (~(__rlim_t)0)

#endif /* _KERN_RESOURCE_H_ */