usr/src/sys/sys/resourcevar.h

/*
 * Copyright (c) 1991 The Regents of the University of California.
 * All rights reserved.
 *
 * 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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by the University of
 *      California, Berkeley and its contributors.
 * 4. 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 REGENTS 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 REGENTS 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.
 *
 *      @(#)resourcevar.h       7.1 (Berkeley) 5/9/91
 */

#ifndef _RESOURCEVAR_H_         /* tmp for user.h */
#define _RESOURCEVAR_H_

/*
 * Kernel per-process accounting / statistics
 * (not necessarily resident except when running).
 */
struct pstats {
#define pstat_startzero p_ru
        struct  rusage p_ru;            /* stats for this proc */
        struct  rusage p_cru;           /* sum of stats for reaped children */
#define pstat_endzero   pstat_startcopy

#define pstat_startcopy p_timer
        struct  itimerval p_timer[3];   /* virtual-time timers */

        struct uprof {                  /* profile arguments */
                short   *pr_base;       /* buffer base */
                unsigned pr_size;       /* buffer size */
                unsigned pr_off;        /* pc offset */
                unsigned pr_scale;      /* pc scaling */
        } p_prof;
#define pstat_endcopy   p_start
        struct  timeval p_start;        /* starting time */
};

/*
 * Kernel shareable process resource limits.  Because this structure
 * is moderately large but changes infrequently, it is normally
 * shared copy-on-write after forks.  If a group of processes
 * ("threads") share modifications, the PL_SHAREMOD flag is set,
 * and a copy must be made for the child of a new fork that isn't
 * sharing modifications to the limits.
 */
struct plimit {
        struct  rlimit pl_rlimit[RLIM_NLIMITS];
        int     p_lflags;               /* below */
        int     p_refcnt;               /* number of references */
};

/* pl_lflags: */
#define PL_SHAREMOD     0x01            /* modifications are shared */

/* make copy of plimit structure */
struct  plimit *limcopy __P((struct plimit *lim));
#endif  /* !_RESOURCEVAR_H_ */