bsd/sys/resource.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  23 /*
  24  * Copyright (c) 1982, 1986, 1993
  25  *      The Regents of the University of California.  All rights reserved.
  26  *
  27  * Redistribution and use in source and binary forms, with or without
  28  * modification, are permitted provided that the following conditions
  29  * are met:
  30  * 1. Redistributions of source code must retain the above copyright
  31  *    notice, this list of conditions and the following disclaimer.
  32  * 2. Redistributions in binary form must reproduce the above copyright
  33  *    notice, this list of conditions and the following disclaimer in the
  34  *    documentation and/or other materials provided with the distribution.
  35  * 3. All advertising materials mentioning features or use of this software
  36  *    must display the following acknowledgement:
  37  *      This product includes software developed by the University of
  38  *      California, Berkeley and its contributors.
  39  * 4. Neither the name of the University nor the names of its contributors
  40  *    may be used to endorse or promote products derived from this software
  41  *    without specific prior written permission.
  42  *
  43  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  44  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  45  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  46  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  47  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  48  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  49  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  50  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  51  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  52  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  53  * SUCH DAMAGE.
  54  *
  55  *      @(#)resource.h  8.2 (Berkeley) 1/4/94
  56  */
  57
  58 #ifndef _SYS_RESOURCE_H_
  59 #define _SYS_RESOURCE_H_
  60
  61 #include <sys/appleapiopts.h>
  62
  63 /*
  64  * Process priority specifications to get/setpriority.
  65  */
  66 #define PRIO_MIN        -20
  67 #define PRIO_MAX        20
  68
  69 #define PRIO_PROCESS    0
  70 #define PRIO_PGRP       1
  71 #define PRIO_USER       2
  72
  73 /*
  74  * Resource utilization information.
  75  */
  76
  77 #define RUSAGE_SELF     0
  78 #define RUSAGE_CHILDREN -1
  79
  80 struct  rusage {
  81         struct timeval ru_utime;        /* user time used */
  82         struct timeval ru_stime;        /* system time used */
  83         long    ru_maxrss;              /* max resident set size */
  84 #define ru_first        ru_ixrss
  85         long    ru_ixrss;               /* integral shared memory size */
  86         long    ru_idrss;               /* integral unshared data " */
  87         long    ru_isrss;               /* integral unshared stack " */
  88         long    ru_minflt;              /* page reclaims */
  89         long    ru_majflt;              /* page faults */
  90         long    ru_nswap;               /* swaps */
  91         long    ru_inblock;             /* block input operations */
  92         long    ru_oublock;             /* block output operations */
  93         long    ru_msgsnd;              /* messages sent */
  94         long    ru_msgrcv;              /* messages received */
  95         long    ru_nsignals;            /* signals received */
  96         long    ru_nvcsw;               /* voluntary context switches */
  97         long    ru_nivcsw;              /* involuntary " */
  98 #define ru_last         ru_nivcsw
  99 };
 100
 101 /*
 102  * Resource limits
 103  */
 104 #define RLIMIT_CPU      0               /* cpu time in milliseconds */
 105 #define RLIMIT_FSIZE    1               /* maximum file size */
 106 #define RLIMIT_DATA     2               /* data size */
 107 #define RLIMIT_STACK    3               /* stack size */
 108 #define RLIMIT_CORE     4               /* core file size */
 109 #define RLIMIT_RSS      5               /* resident set size */
 110 #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
 111 #define RLIMIT_NPROC    7               /* number of processes */
 112 #define RLIMIT_NOFILE   8               /* number of open files */
 113
 114 #define RLIM_NLIMITS    9               /* number of resource limits */
 115
 116 #define RLIM_INFINITY   (((u_quad_t)1 << 63) - 1)
 117
 118 struct orlimit {
 119         int32_t rlim_cur;               /* current (soft) limit */
 120         int32_t rlim_max;               /* maximum value for rlim_cur */
 121 };
 122
 123 struct rlimit {
 124         rlim_t  rlim_cur;               /* current (soft) limit */
 125         rlim_t  rlim_max;               /* maximum value for rlim_cur */
 126 };
 127
 128 /* Load average structure. */
 129 struct loadavg {
 130         fixpt_t ldavg[3];
 131         long    fscale;
 132 };
 133
 134 #ifdef KERNEL
 135 #ifdef __APPLE_API_PRIVATE
 136 extern struct loadavg averunnable;
 137 #define LSCALE  1000            /* scaling for "fixed point" arithmetic */
 138 #endif /* __APPLE_API_PRIVATE */
 139 #else
 140 #include <sys/cdefs.h>
 141
 142 __BEGIN_DECLS
 143 int     getpriority __P((int, int));
 144 int     getrlimit __P((int, struct rlimit *));
 145 int     getrusage __P((int, struct rusage *));
 146 int     setpriority __P((int, int, int));
 147 int     setrlimit __P((int, const struct rlimit *));
 148 __END_DECLS
 149
 150 #endif  /* KERNEL */
 151 #endif  /* !_SYS_RESOURCE_H_ */