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 /*      $NetBSD: resource.h,v 1.29.72.1 2009/04/01 00:25:22 snj Exp $   */
    2 
    3 /*
    4  * Copyright (c) 1982, 1986, 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  *      @(#)resource.h  8.4 (Berkeley) 1/9/95
   32  */
   33 
   34 #ifndef _SYS_RESOURCE_H_
   35 #define _SYS_RESOURCE_H_
   36 
   37 #include <sys/featuretest.h>
   38 #include <sys/time.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 #ifdef _KERNEL
   62 #define ru_first        ru_ixrss
   63 #endif
   64         long    ru_ixrss;               /* integral shared memory size */
   65         long    ru_idrss;               /* integral unshared data " */
   66         long    ru_isrss;               /* integral unshared stack " */
   67         long    ru_minflt;              /* page reclaims */
   68         long    ru_majflt;              /* page faults */
   69         long    ru_nswap;               /* swaps */
   70         long    ru_inblock;             /* block input operations */
   71         long    ru_oublock;             /* block output operations */
   72         long    ru_msgsnd;              /* messages sent */
   73         long    ru_msgrcv;              /* messages received */
   74         long    ru_nsignals;            /* signals received */
   75         long    ru_nvcsw;               /* voluntary context switches */
   76         long    ru_nivcsw;              /* involuntary " */
   77 #ifdef _KERNEL
   78 #define ru_last         ru_nivcsw
   79 #endif
   80 };
   81 
   82 /*
   83  * Resource limits
   84  */
   85 #define RLIMIT_CPU      0               /* cpu time in milliseconds */
   86 #define RLIMIT_FSIZE    1               /* maximum file size */
   87 #define RLIMIT_DATA     2               /* data size */
   88 #define RLIMIT_STACK    3               /* stack size */
   89 #define RLIMIT_CORE     4               /* core file size */
   90 #define RLIMIT_RSS      5               /* resident set size */
   91 #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
   92 #define RLIMIT_NPROC    7               /* number of processes */
   93 #define RLIMIT_NOFILE   8               /* number of open files */
   94 #define RLIMIT_SBSIZE   9               /* maximum size of all socket buffers */
   95 #define RLIMIT_AS       10              /* virtual process size (inclusive of mmap) */
   96 #define RLIMIT_VMEM     RLIMIT_AS       /* common alias */
   97 
   98 #if defined(_NETBSD_SOURCE)
   99 #define RLIM_NLIMITS    11              /* number of resource limits */
  100 #endif
  101 
  102 #define RLIM_INFINITY   (~((u_quad_t)1 << 63))  /* no limit */
  103 #define RLIM_SAVED_MAX  RLIM_INFINITY   /* unrepresentable hard limit */
  104 #define RLIM_SAVED_CUR  RLIM_INFINITY   /* unrepresentable soft limit */
  105 
  106 #if defined(_KERNEL)
  107 /* 4.3BSD compatibility rlimit argument structure. */
  108 struct orlimit {
  109         int32_t rlim_cur;               /* current (soft) limit */
  110         int32_t rlim_max;               /* maximum value for rlim_cur */
  111 };
  112 #endif
  113 
  114 struct rlimit {
  115         rlim_t  rlim_cur;               /* current (soft) limit */
  116         rlim_t  rlim_max;               /* maximum value for rlim_cur */
  117 };
  118 
  119 #if defined(_NETBSD_SOURCE)
  120 /* Load average structure. */
  121 struct loadavg {
  122         fixpt_t ldavg[3];
  123         long    fscale;
  124 };
  125 #endif
  126 
  127 #ifdef _KERNEL
  128 extern struct loadavg averunnable;
  129 struct pcred;
  130 int     dosetrlimit(struct lwp *, struct proc *, int, struct rlimit *);
  131 int     donice(struct lwp *, struct proc *, int);
  132 
  133 #else
  134 #include <sys/cdefs.h>
  135 
  136 __BEGIN_DECLS
  137 int     getpriority(int, id_t);
  138 int     getrlimit(int, struct rlimit *);
  139 int     getrusage(int, struct rusage *);
  140 int     setpriority(int, id_t, int);
  141 int     setrlimit(int, const struct rlimit *);
  142 __END_DECLS
  143 
  144 #endif  /* _KERNEL */
  145 #endif  /* !_SYS_RESOURCE_H_ */

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