bsd/sys/resource.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
  26 /*
  27  * Copyright (c) 1982, 1986, 1993
  28  *      The Regents of the University of California.  All rights reserved.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. Redistributions in binary form must reproduce the above copyright
  36  *    notice, this list of conditions and the following disclaimer in the
  37  *    documentation and/or other materials provided with the distribution.
  38  * 3. All advertising materials mentioning features or use of this software
  39  *    must display the following acknowledgement:
  40  *      This product includes software developed by the University of
  41  *      California, Berkeley and its contributors.
  42  * 4. Neither the name of the University nor the names of its contributors
  43  *    may be used to endorse or promote products derived from this software
  44  *    without specific prior written permission.
  45  *
  46  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  47  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  48  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  49  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  50  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  51  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  52  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  53  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  54  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  55  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  56  * SUCH DAMAGE.
  57  *
  58  *      @(#)resource.h  8.2 (Berkeley) 1/4/94
  59  */
  60
  61 #ifndef _SYS_RESOURCE_H_
  62 #define _SYS_RESOURCE_H_
  63
  64 #include <sys/appleapiopts.h>
  65
  66 /*
  67  * Process priority specifications to get/setpriority.
  68  */
  69 #define PRIO_MIN        -20
  70 #define PRIO_MAX        20
  71
  72 #define PRIO_PROCESS    0
  73 #define PRIO_PGRP       1
  74 #define PRIO_USER       2
  75
  76 /*
  77  * Resource utilization information.
  78  */
  79
  80 #define RUSAGE_SELF     0
  81 #define RUSAGE_CHILDREN -1
  82
  83 struct  rusage {
  84         struct timeval ru_utime;        /* user time used */
  85         struct timeval ru_stime;        /* system time used */
  86         long    ru_maxrss;              /* max resident set size */
  87 #define ru_first        ru_ixrss
  88         long    ru_ixrss;               /* integral shared memory size */
  89         long    ru_idrss;               /* integral unshared data " */
  90         long    ru_isrss;               /* integral unshared stack " */
  91         long    ru_minflt;              /* page reclaims */
  92         long    ru_majflt;              /* page faults */
  93         long    ru_nswap;               /* swaps */
  94         long    ru_inblock;             /* block input operations */
  95         long    ru_oublock;             /* block output operations */
  96         long    ru_msgsnd;              /* messages sent */
  97         long    ru_msgrcv;              /* messages received */
  98         long    ru_nsignals;            /* signals received */
  99         long    ru_nvcsw;               /* voluntary context switches */
 100         long    ru_nivcsw;              /* involuntary " */
 101 #define ru_last         ru_nivcsw
 102 };
 103
 104 /*
 105  * Resource limits
 106  */
 107 #define RLIMIT_CPU      0               /* cpu time in milliseconds */
 108 #define RLIMIT_FSIZE    1               /* maximum file size */
 109 #define RLIMIT_DATA     2               /* data size */
 110 #define RLIMIT_STACK    3               /* stack size */
 111 #define RLIMIT_CORE     4               /* core file size */
 112 #define RLIMIT_RSS      5               /* resident set size */
 113 #define RLIMIT_MEMLOCK  6               /* locked-in-memory address space */
 114 #define RLIMIT_NPROC    7               /* number of processes */
 115 #define RLIMIT_NOFILE   8               /* number of open files */
 116
 117 #define RLIM_NLIMITS    9               /* number of resource limits */
 118
 119 #define RLIM_INFINITY   (((u_quad_t)1 << 63) - 1)
 120
 121 struct orlimit {
 122         int32_t rlim_cur;               /* current (soft) limit */
 123         int32_t rlim_max;               /* maximum value for rlim_cur */
 124 };
 125
 126 struct rlimit {
 127         rlim_t  rlim_cur;               /* current (soft) limit */
 128         rlim_t  rlim_max;               /* maximum value for rlim_cur */
 129 };
 130
 131 /* Load average structure. */
 132 struct loadavg {
 133         fixpt_t ldavg[3];
 134         long    fscale;
 135 };
 136
 137 #ifdef KERNEL
 138 #ifdef __APPLE_API_PRIVATE
 139 extern struct loadavg averunnable;
 140 #define LSCALE  1000            /* scaling for "fixed point" arithmetic */
 141 #endif /* __APPLE_API_PRIVATE */
 142 #else
 143 #include <sys/cdefs.h>
 144
 145 __BEGIN_DECLS
 146 int     getpriority __P((int, int));
 147 int     getrlimit __P((int, struct rlimit *));
 148 int     getrusage __P((int, struct rusage *));
 149 int     setpriority __P((int, int, int));
 150 int     setrlimit __P((int, const struct rlimit *));
 151 __END_DECLS
 152
 153 #endif  /* KERNEL */
 154 #endif  /* !_SYS_RESOURCE_H_ */