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/resource.h

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    1 /*-
    2  * Copyright (c) 1982, 1986, 1993
    3  *      The Regents of the University of California.  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  * 4. Neither the name of the University nor the names of its contributors
   14  *    may be used to endorse or promote products derived from this software
   15  *    without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   27  * SUCH DAMAGE.
   28  *
   29  *      @(#)resource.h  8.4 (Berkeley) 1/9/95
   30  * $FreeBSD: src/sys/sys/resource.h,v 1.23.2.2 2005/04/21 22:19:22 ps Exp $
   31  */
   32 
   33 #ifndef _SYS_RESOURCE_H_
   34 #define _SYS_RESOURCE_H_
   35 
   36 #include <sys/cdefs.h>
   37 #include <sys/_timeval.h>
   38 #include <sys/_types.h>
   39 
   40 /*
   41  * Process priority specifications to get/setpriority.
   42  */
   43 #define PRIO_MIN        -20
   44 #define PRIO_MAX        20
   45 
   46 #define PRIO_PROCESS    0
   47 #define PRIO_PGRP       1
   48 #define PRIO_USER       2
   49 
   50 /*
   51  * Resource utilization information.
   52  */
   53 
   54 #define RUSAGE_SELF     0
   55 #define RUSAGE_CHILDREN -1
   56 
   57 struct rusage {
   58         struct timeval ru_utime;        /* user time used */
   59         struct timeval ru_stime;        /* system time used */
   60         long    ru_maxrss;              /* max resident set size */
   61 #define ru_first        ru_ixrss
   62         long    ru_ixrss;               /* integral shared memory size */
   63         long    ru_idrss;               /* integral unshared data " */
   64         long    ru_isrss;               /* integral unshared stack " */
   65         long    ru_minflt;              /* page reclaims */
   66         long    ru_majflt;              /* page faults */
   67         long    ru_nswap;               /* swaps */
   68         long    ru_inblock;             /* block input operations */
   69         long    ru_oublock;             /* block output operations */
   70         long    ru_msgsnd;              /* messages sent */
   71         long    ru_msgrcv;              /* messages received */
   72         long    ru_nsignals;            /* signals received */
   73         long    ru_nvcsw;               /* voluntary context switches */
   74         long    ru_nivcsw;              /* involuntary " */
   75 #define ru_last         ru_nivcsw
   76 };
   77 
   78 /*
   79  * Resource limits
   80  */
   81 #define RLIMIT_CPU      0               /* cpu time in milliseconds */
   82 #define RLIMIT_FSIZE    1               /* maximum file size */
   83 #define RLIMIT_DATA     2               /* data size */
   84 #define RLIMIT_STACK    3               /* stack size */
   85 #define RLIMIT_CORE     4               /* core file size */
   86 #define RLIMIT_RSS      5               /* resident set size */
   87 #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
   88 #define RLIMIT_NPROC    7               /* number of processes */
   89 #define RLIMIT_NOFILE   8               /* number of open files */
   90 #define RLIMIT_SBSIZE   9               /* maximum size of all socket buffers */
   91 #define RLIMIT_VMEM     10              /* virtual process size (inclusive of mmap) */
   92 #define RLIMIT_AS       RLIMIT_VMEM     /* standard name for RLIMIT_VMEM */
   93 
   94 #define RLIM_NLIMITS    11              /* number of resource limits */
   95 
   96 #define RLIM_INFINITY   ((rlim_t)(((u_quad_t)1 << 63) - 1))
   97 /* XXX Missing: RLIM_SAVED_MAX, RLIM_SAVED_CUR */
   98 
   99 
  100 /*
  101  * Resource limit string identifiers
  102  */
  103 
  104 #ifdef _RLIMIT_IDENT
  105 static char *rlimit_ident[] = {
  106         "cpu",
  107         "fsize",
  108         "data",
  109         "stack",
  110         "core",
  111         "rss",
  112         "memlock",
  113         "nproc",
  114         "nofile",
  115         "sbsize",
  116         "vmem",
  117 };
  118 #endif
  119 
  120 #ifndef _RLIM_T_DECLARED
  121 typedef __rlim_t        rlim_t;
  122 #define _RLIM_T_DECLARED
  123 #endif
  124 
  125 struct rlimit {
  126         rlim_t  rlim_cur;               /* current (soft) limit */
  127         rlim_t  rlim_max;               /* maximum value for rlim_cur */
  128 };
  129 
  130 #if __BSD_VISIBLE
  131 
  132 struct orlimit {
  133         __int32_t       rlim_cur;       /* current (soft) limit */
  134         __int32_t       rlim_max;       /* maximum value for rlim_cur */
  135 };
  136 
  137 struct loadavg {
  138         __fixpt_t       ldavg[3];
  139         long            fscale;
  140 };
  141 
  142 #define CP_USER         0
  143 #define CP_NICE         1
  144 #define CP_SYS          2
  145 #define CP_INTR         3
  146 #define CP_IDLE         4
  147 #define CPUSTATES       5
  148 
  149 #endif  /* __BSD_VISIBLE */
  150 
  151 #ifdef _KERNEL
  152 
  153 extern struct loadavg averunnable;
  154 extern long cp_time[CPUSTATES];
  155 
  156 #else
  157 
  158 __BEGIN_DECLS
  159 /* XXX 2nd arg to [gs]etpriority() should be an id_t */
  160 int     getpriority(int, int);
  161 int     getrlimit(int, struct rlimit *);
  162 int     getrusage(int, struct rusage *);
  163 int     setpriority(int, int, int);
  164 int     setrlimit(int, const struct rlimit *);
  165 __END_DECLS
  166 
  167 #endif  /* _KERNEL */
  168 #endif  /* !_SYS_RESOURCE_H_ */

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