The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /*      $NetBSD: resourcevar.h,v 1.19 2003/08/07 16:34:12 agc Exp $     */
    2 
    3 /*
    4  * Copyright (c) 1991, 1993
    5  *      The Regents of the University of California.  All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  * 3. Neither the name of the University nor the names of its contributors
   16  *    may be used to endorse or promote products derived from this software
   17  *    without specific prior written permission.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   29  * SUCH DAMAGE.
   30  *
   31  *      @(#)resourcevar.h       8.4 (Berkeley) 1/9/95
   32  */
   33 
   34 #ifndef _SYS_RESOURCEVAR_H_
   35 #define _SYS_RESOURCEVAR_H_
   36 
   37 /*
   38  * Kernel per-process accounting / statistics
   39  * (not necessarily resident except when running).
   40  */
   41 struct pstats {
   42 #define pstat_startzero p_ru
   43         struct  rusage p_ru;            /* stats for this proc */
   44         struct  rusage p_cru;           /* sum of stats for reaped children */
   45 #define pstat_endzero   pstat_startcopy
   46 
   47 #define pstat_startcopy p_timer
   48         struct  itimerval p_timer[3];   /* virtual-time timers */
   49 
   50         struct uprof {                  /* profile arguments */
   51                 caddr_t pr_base;        /* buffer base */
   52                 size_t  pr_size;        /* buffer size */
   53                 u_long  pr_off;         /* pc offset */
   54                 u_int   pr_scale;       /* pc scaling */
   55                 u_long  pr_addr;        /* temp storage for addr until AST */
   56                 u_long  pr_ticks;       /* temp storage for ticks until AST */
   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         char    *pl_corename;
   73 #define PL_SHAREMOD     0x01            /* modifications are shared */
   74         int     p_lflags;
   75         int     p_refcnt;               /* number of references */
   76 };
   77 
   78 /* add user profiling from AST */
   79 #define ADDUPROF(p)                                                     \
   80         do {                                                            \
   81                 addupc_task(p,                                          \
   82                     (p)->p_stats->p_prof.pr_addr,                       \
   83                     (p)->p_stats->p_prof.pr_ticks);                     \
   84                 (p)->p_stats->p_prof.pr_ticks = 0;                      \
   85         } while (/* CONSTCOND */ 0)
   86 
   87 #ifdef _KERNEL
   88 extern char defcorename[];
   89 void     addupc_intr __P((struct proc *, u_long));
   90 void     addupc_task __P((struct proc *, u_long, u_int));
   91 void     calcru __P((struct proc *, struct timeval *, struct timeval *,
   92             struct timeval *));
   93 struct plimit *limcopy __P((struct plimit *));
   94 void limfree __P((struct plimit *));
   95 void    ruadd __P((struct rusage *, struct rusage *));
   96 struct  pstats *pstatscopy __P((struct pstats *));
   97 void    pstatsfree __P((struct pstats *));
   98 #endif
   99 #endif  /* !_SYS_RESOURCEVAR_H_ */

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