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Annotation of Net2/sys/resourcevar.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1991 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  *
        !            33:  *     @(#)resourcevar.h       7.1 (Berkeley) 5/9/91
        !            34:  */
        !            35: 
        !            36: #ifndef        _RESOURCEVAR_H_         /* tmp for user.h */
        !            37: #define        _RESOURCEVAR_H_
        !            38: 
        !            39: /*
        !            40:  * Kernel per-process accounting / statistics
        !            41:  * (not necessarily resident except when running).
        !            42:  */
        !            43: struct pstats {
        !            44: #define        pstat_startzero p_ru
        !            45:        struct  rusage p_ru;            /* stats for this proc */
        !            46:        struct  rusage p_cru;           /* sum of stats for reaped children */
        !            47: #define        pstat_endzero   pstat_startcopy
        !            48: 
        !            49: #define        pstat_startcopy p_timer
        !            50:        struct  itimerval p_timer[3];   /* virtual-time timers */
        !            51: 
        !            52:        struct uprof {                  /* profile arguments */
        !            53:                short   *pr_base;       /* buffer base */
        !            54:                unsigned pr_size;       /* buffer size */
        !            55:                unsigned pr_off;        /* pc offset */
        !            56:                unsigned pr_scale;      /* pc scaling */
        !            57:        } p_prof;
        !            58: #define        pstat_endcopy   p_start
        !            59:        struct  timeval p_start;        /* starting time */
        !            60: };
        !            61: 
        !            62: /*
        !            63:  * Kernel shareable process resource limits.  Because this structure
        !            64:  * is moderately large but changes infrequently, it is normally
        !            65:  * shared copy-on-write after forks.  If a group of processes
        !            66:  * ("threads") share modifications, the PL_SHAREMOD flag is set,
        !            67:  * and a copy must be made for the child of a new fork that isn't
        !            68:  * sharing modifications to the limits.
        !            69:  */
        !            70: struct plimit {
        !            71:        struct  rlimit pl_rlimit[RLIM_NLIMITS];
        !            72:        int     p_lflags;               /* below */
        !            73:        int     p_refcnt;               /* number of references */
        !            74: };
        !            75: 
        !            76: /* pl_lflags: */
        !            77: #define        PL_SHAREMOD     0x01            /* modifications are shared */
        !            78: 
        !            79: /* make copy of plimit structure */
        !            80: struct plimit *limcopy __P((struct plimit *lim));
        !            81: #endif /* !_RESOURCEVAR_H_ */

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