StdLib/Include/sys/resource.h

   1 /*      $NetBSD: resource.h,v 1.29 2006/07/23 22:06:14 ad 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
  96 #if defined(_NETBSD_SOURCE)
  97 #define RLIM_NLIMITS    10              /* number of resource limits */
  98 #endif
  99
 100 #define RLIM_INFINITY   (~((u_quad_t)1 << 63))  /* no limit */
 101 #define RLIM_SAVED_MAX  RLIM_INFINITY   /* unrepresentable hard limit */
 102 #define RLIM_SAVED_CUR  RLIM_INFINITY   /* unrepresentable soft limit */
 103
 104 #if defined(_KERNEL)
 105 /* 4.3BSD compatibility rlimit argument structure. */
 106 struct orlimit {
 107         int32_t rlim_cur;               /* current (soft) limit */
 108         int32_t rlim_max;               /* maximum value for rlim_cur */
 109 };
 110 #endif
 111
 112 struct rlimit {
 113         rlim_t  rlim_cur;               /* current (soft) limit */
 114         rlim_t  rlim_max;               /* maximum value for rlim_cur */
 115 };
 116
 117 #if defined(_NETBSD_SOURCE)
 118 /* Load average structure. */
 119 struct loadavg {
 120         fixpt_t ldavg[3];
 121         long    fscale;
 122 };
 123 #endif
 124
 125 #ifdef _KERNEL
 126 extern struct loadavg averunnable;
 127 struct pcred;
 128 int     dosetrlimit(struct lwp *, struct proc *, int, struct rlimit *);
 129 int     donice(struct lwp *, struct proc *, int);
 130
 131 #else
 132 #include <sys/EfiCdefs.h>
 133
 134 __BEGIN_DECLS
 135 int     getpriority(int, id_t);
 136 int     getrlimit(int, struct rlimit *);
 137 int     getrusage(int, struct rusage *);
 138 int     setpriority(int, id_t, int);
 139 int     setrlimit(int, const struct rlimit *);
 140 __END_DECLS
 141
 142 #endif  /* _KERNEL */
 143 #endif  /* !_SYS_RESOURCE_H_ */