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

     /*      $NetBSD: resource.h,v 1.36 2019/03/30 23:29:55 christos Exp $   */
     
     /*
      * Copyright (c) 1982, 1986, 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.
     *
     *      @(#)resource.h  8.4 (Berkeley) 1/9/95
     */
    
    #ifndef _SYS_RESOURCE_H_
    #define _SYS_RESOURCE_H_
    
    #include <sys/featuretest.h>
    #include <sys/time.h>
    
    /*
     * Process priority specifications to get/setpriority.
     */
    #define PRIO_MIN        -20
    #define PRIO_MAX        20
    
    #define PRIO_PROCESS    0
    #define PRIO_PGRP       1
    #define PRIO_USER       2
    
    /*
     * Resource utilization information.
     */
    
    #define RUSAGE_SELF     0
    #define RUSAGE_CHILDREN -1
    
    struct  rusage {
            struct timeval ru_utime;        /* user time used */
            struct timeval ru_stime;        /* system time used */
            long    ru_maxrss;              /* max resident set size */
    #define ru_first        ru_ixrss
            long    ru_ixrss;               /* integral shared memory size */
            long    ru_idrss;               /* integral unshared data " */
            long    ru_isrss;               /* integral unshared stack " */
            long    ru_minflt;              /* page reclaims */
            long    ru_majflt;              /* page faults */
            long    ru_nswap;               /* swaps */
            long    ru_inblock;             /* block input operations */
            long    ru_oublock;             /* block output operations */
            long    ru_msgsnd;              /* messages sent */
            long    ru_msgrcv;              /* messages received */
            long    ru_nsignals;            /* signals received */
            long    ru_nvcsw;               /* voluntary context switches */
            long    ru_nivcsw;              /* involuntary " */
    #define ru_last         ru_nivcsw
    };
    
    #ifdef _NETBSD_SOURCE
    struct wrusage {  
            struct rusage   wru_self;
            struct rusage   wru_children;
    };  
    #endif
    
    /*
     * Resource limits
     */
    #define RLIMIT_CPU      0               /* cpu time in milliseconds */
    #define RLIMIT_FSIZE    1               /* maximum file size */
    #define RLIMIT_DATA     2               /* data size */
    #define RLIMIT_STACK    3               /* stack size */
    #define RLIMIT_CORE     4               /* core file size */
    #define RLIMIT_RSS      5               /* resident set size */
    #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
    #define RLIMIT_NPROC    7               /* number of processes */
    #define RLIMIT_NOFILE   8               /* number of open files */
    #define RLIMIT_SBSIZE   9               /* maximum size of all socket buffers */
    #define RLIMIT_AS       10              /* virtual process size (inclusive of mmap) */
    #define RLIMIT_VMEM     RLIMIT_AS       /* common alias */
   #define RLIMIT_NTHR     11              /* number of threads */
   
   #if defined(_NETBSD_SOURCE)
   #define RLIM_NLIMITS    12              /* number of resource limits */
   
   #define RLIM_STRINGS { \
           "cpu-time", \
           "file-size", \
           "data-size", \
           "stack-size", \
           "core-dump-size", \
           "resident-memory-size", \
           "locked-memory-size", \
           "processes-number", \
           "files-number", \
           "socket-buffer-size", \
           "virtual-memory-size", \
           "threads-number", \
   }
   #endif
   
   #define RLIM_INFINITY   (~((u_quad_t)1 << 63))  /* no limit */
   #define RLIM_SAVED_MAX  RLIM_INFINITY   /* unrepresentable hard limit */
   #define RLIM_SAVED_CUR  RLIM_INFINITY   /* unrepresentable soft limit */
   
   #if defined(_KERNEL)
   /* 4.3BSD compatibility rlimit argument structure. */
   struct orlimit {
           int32_t rlim_cur;               /* current (soft) limit */
           int32_t rlim_max;               /* maximum value for rlim_cur */
   };
   #endif
   
   struct rlimit {
           rlim_t  rlim_cur;               /* current (soft) limit */
           rlim_t  rlim_max;               /* maximum value for rlim_cur */
   };
   
   #if defined(_NETBSD_SOURCE)
   /* Load average structure. */
   struct loadavg {
           fixpt_t ldavg[3];
           long    fscale;
   };
   #endif
   
   #ifdef _KERNEL
   extern struct loadavg averunnable;
   struct pcred;
   int     dosetrlimit(struct lwp *, struct proc *, int, struct rlimit *);
   #else
   #include <sys/cdefs.h>
   
   __BEGIN_DECLS
   int     getpriority(int, id_t);
   int     getrlimit(int, struct rlimit *);
   #ifndef __LIBC12_SOURCE__
   int     getrusage(int, struct rusage *) __RENAME(__getrusage50);
   #endif
   int     setpriority(int, id_t, int);
   int     setrlimit(int, const struct rlimit *);
   __END_DECLS
   
   #endif  /* _KERNEL */
   #endif  /* !_SYS_RESOURCE_H_ */

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