FreeBSD/Linux Kernel Cross Reference
sys/sys/resourcevar.h

     /*      $NetBSD: resourcevar.h,v 1.24 2005/02/03 19:20:02 perry Exp $   */
     
     /*
      * Copyright (c) 1991, 1993
      *      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. 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       8.4 (Berkeley) 1/9/95
     */
    
    #ifndef _SYS_RESOURCEVAR_H_
    #define _SYS_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 */
                    caddr_t pr_base;        /* buffer base */
                    size_t  pr_size;        /* buffer size */
                    u_long  pr_off;         /* pc offset */
                    u_int   pr_scale;       /* pc scaling */
                    u_long  pr_addr;        /* temp storage for addr until AST */
                    u_long  pr_ticks;       /* temp storage for ticks until AST */
            } 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];
            char    *pl_corename;
    #define PL_SHAREMOD     0x01            /* modifications are shared */
            int     p_lflags;
            int     p_refcnt;               /* number of references */
            struct simplelock p_slock;      /* mutex for p_refcnt */
    };
    
    /* add user profiling from AST */
    #define ADDUPROF(p)                                                     \
            do {                                                            \
                    addupc_task(p,                                          \
                        (p)->p_stats->p_prof.pr_addr,                       \
                        (p)->p_stats->p_prof.pr_ticks);                     \
                    (p)->p_stats->p_prof.pr_ticks = 0;                      \
            } while (/* CONSTCOND */ 0)
    
    #ifdef _KERNEL
    /*
     * Structure associated with user caching.
     */
    struct uidinfo {
            LIST_ENTRY(uidinfo) ui_hash;
            uid_t   ui_uid;
            long    ui_proccnt;     /* Number of processes */
            rlim_t  ui_sbsize;      /* socket buffer size */
    
    };
    #define UIHASH(uid)     (&uihashtbl[(uid) & uihash])
   extern LIST_HEAD(uihashhead, uidinfo) *uihashtbl;
   extern u_long uihash;           /* size of hash table - 1 */
   int       chgproccnt(uid_t, int);
   int       chgsbsize(uid_t, u_long *, u_long, rlim_t);
   
   extern char defcorename[];
   void     addupc_intr(struct proc *, u_long);
   void     addupc_task(struct proc *, u_long, u_int);
   void     calcru(struct proc *, struct timeval *, struct timeval *,
               struct timeval *);
   struct plimit *limcopy(struct plimit *);
   void limfree(struct plimit *);
   void    ruadd(struct rusage *, struct rusage *);
   struct  pstats *pstatscopy(struct pstats *);
   void    pstatsfree(struct pstats *);
   extern rlim_t maxdmap;
   extern rlim_t maxsmap;
   #endif
   #endif  /* !_SYS_RESOURCEVAR_H_ */

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