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: releng/11.1/sys/sys/resource.h 314391 2017-02-28 14:48:52Z kib $
   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 #ifndef _ID_T_DECLARED
   41 typedef __id_t          id_t;
   42 #define _ID_T_DECLARED
   43 #endif
   44 
   45 #ifndef _RLIM_T_DECLARED
   46 typedef __rlim_t        rlim_t;
   47 #define _RLIM_T_DECLARED
   48 #endif
   49 
   50 /*
   51  * Process priority specifications to get/setpriority.
   52  */
   53 #define PRIO_MIN        -20
   54 #define PRIO_MAX        20
   55 
   56 #define PRIO_PROCESS    0
   57 #define PRIO_PGRP       1
   58 #define PRIO_USER       2
   59 
   60 /*
   61  * Resource utilization information.
   62  *
   63  * All fields are only modified by curthread and
   64  * no locks are required to read.
   65  */
   66 
   67 #define RUSAGE_SELF     0
   68 #define RUSAGE_CHILDREN -1
   69 #define RUSAGE_THREAD   1
   70 
   71 struct rusage {
   72         struct timeval ru_utime;        /* user time used */
   73         struct timeval ru_stime;        /* system time used */
   74         long    ru_maxrss;              /* max resident set size */
   75 #define ru_first        ru_ixrss
   76         long    ru_ixrss;               /* integral shared memory size */
   77         long    ru_idrss;               /* integral unshared data " */
   78         long    ru_isrss;               /* integral unshared stack " */
   79         long    ru_minflt;              /* page reclaims */
   80         long    ru_majflt;              /* page faults */
   81         long    ru_nswap;               /* swaps */
   82         long    ru_inblock;             /* block input operations */
   83         long    ru_oublock;             /* block output operations */
   84         long    ru_msgsnd;              /* messages sent */
   85         long    ru_msgrcv;              /* messages received */
   86         long    ru_nsignals;            /* signals received */
   87         long    ru_nvcsw;               /* voluntary context switches */
   88         long    ru_nivcsw;              /* involuntary " */
   89 #define ru_last         ru_nivcsw
   90 };
   91 
   92 #if __BSD_VISIBLE
   93 struct __wrusage {
   94         struct rusage   wru_self;
   95         struct rusage   wru_children;
   96 };
   97 #endif
   98 
   99 /*
  100  * Resource limits
  101  */
  102 #define RLIMIT_CPU      0               /* maximum cpu time in seconds */
  103 #define RLIMIT_FSIZE    1               /* maximum file size */
  104 #define RLIMIT_DATA     2               /* data size */
  105 #define RLIMIT_STACK    3               /* stack size */
  106 #define RLIMIT_CORE     4               /* core file size */
  107 #define RLIMIT_RSS      5               /* resident set size */
  108 #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
  109 #define RLIMIT_NPROC    7               /* number of processes */
  110 #define RLIMIT_NOFILE   8               /* number of open files */
  111 #define RLIMIT_SBSIZE   9               /* maximum size of all socket buffers */
  112 #define RLIMIT_VMEM     10              /* virtual process size (incl. mmap) */
  113 #define RLIMIT_AS       RLIMIT_VMEM     /* standard name for RLIMIT_VMEM */
  114 #define RLIMIT_NPTS     11              /* pseudo-terminals */
  115 #define RLIMIT_SWAP     12              /* swap used */
  116 #define RLIMIT_KQUEUES  13              /* kqueues allocated */
  117 #define RLIMIT_UMTXP    14              /* process-shared umtx */
  118 
  119 #define RLIM_NLIMITS    15              /* number of resource limits */
  120 
  121 #define RLIM_INFINITY   ((rlim_t)(((__uint64_t)1 << 63) - 1))
  122 #define RLIM_SAVED_MAX  RLIM_INFINITY
  123 #define RLIM_SAVED_CUR  RLIM_INFINITY
  124 
  125 /*
  126  * Resource limit string identifiers
  127  */
  128 
  129 #ifdef _RLIMIT_IDENT
  130 static const char *rlimit_ident[RLIM_NLIMITS] = {
  131         "cpu",
  132         "fsize",
  133         "data",
  134         "stack",
  135         "core",
  136         "rss",
  137         "memlock",
  138         "nproc",
  139         "nofile",
  140         "sbsize",
  141         "vmem",
  142         "npts",
  143         "swap",
  144         "kqueues",
  145         "umtx",
  146 };
  147 #endif
  148 
  149 struct rlimit {
  150         rlim_t  rlim_cur;               /* current (soft) limit */
  151         rlim_t  rlim_max;               /* maximum value for rlim_cur */
  152 };
  153 
  154 #if __BSD_VISIBLE
  155 
  156 struct orlimit {
  157         __int32_t       rlim_cur;       /* current (soft) limit */
  158         __int32_t       rlim_max;       /* maximum value for rlim_cur */
  159 };
  160 
  161 struct loadavg {
  162         __fixpt_t       ldavg[3];
  163         long            fscale;
  164 };
  165 
  166 #define CP_USER         0
  167 #define CP_NICE         1
  168 #define CP_SYS          2
  169 #define CP_INTR         3
  170 #define CP_IDLE         4
  171 #define CPUSTATES       5
  172 
  173 #endif  /* __BSD_VISIBLE */
  174 
  175 #ifdef _KERNEL
  176 
  177 extern struct loadavg averunnable;
  178 void    read_cpu_time(long *cp_time);   /* Writes array of CPUSTATES */
  179 
  180 #else
  181 
  182 __BEGIN_DECLS
  183 /* XXX 2nd arg to [gs]etpriority() should be an id_t */
  184 int     getpriority(int, int);
  185 int     getrlimit(int, struct rlimit *);
  186 int     getrusage(int, struct rusage *);
  187 int     setpriority(int, int, int);
  188 int     setrlimit(int, const struct rlimit *);
  189 __END_DECLS
  190 
  191 #endif  /* _KERNEL */
  192 #endif  /* !_SYS_RESOURCE_H_ */

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