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1 /*
2 * Copyright (c) 2004, 2008
3 * The President and Fellows of Harvard College.
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 * 3. 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 UNIVERSITY 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 UNIVERSITY 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
30 #ifndef _KERN_RESOURCE_H_
31 #define _KERN_RESOURCE_H_
32
33 /*
34 * Definitions for resource usage and limits.
35 *
36 * Not very important.
37 */
38
39
40 /* priorities for setpriority() */
41 #define PRIO_MIN (-20)
42 #define PRIO_MAX 20
43
44 /* "which" codes for setpriority() */
45 #define PRIO_PROCESS 0
46 #define PRIO_PGRP 1
47 #define PRIO_USER 2
48
49 /* flags for getrusage() */
50 #define RUSAGE_SELF 0
51 #define RUSAGE_CHILDREN (-1)
52
53 struct rusage {
54 struct timeval ru_utime;
55 struct timeval ru_stime;
56 __size_t ru_maxrss; /* maximum RSS during lifespan (kb) */
57 __counter_t ru_ixrss; /* text memory usage (kb-ticks) */
58 __counter_t ru_idrss; /* data memory usage (kb-ticks) */
59 __counter_t ru_isrss; /* stack memory usage (kb-ticks) */
60 __counter_t ru_minflt; /* minor VM faults (count) */
61 __counter_t ru_majflt; /* major VM faults (count) */
62 __counter_t ru_nswap; /* whole-process swaps (count) */
63 __counter_t ru_inblock; /* file blocks read (count) */
64 __counter_t ru_oublock; /* file blocks written (count) */
65 __counter_t ru_msgrcv; /* socket/pipe packets rcv'd (count) */
66 __counter_t ru_msgsnd; /* socket/pipe packets sent (count) */
67 __counter_t ru_nsignals; /* signals delivered (count) */
68 __counter_t ru_nvcsw; /* voluntary context switches (count)*/
69 __counter_t ru_nivcsw; /* involuntary ditto (count) */
70 };
71
72 /* limit codes for getrusage/setrusage */
73
74 #define RLIMIT_NPROC 0 /* max procs per user (count) */
75 #define RLIMIT_NOFILE 1 /* max open files per proc (count) */
76 #define RLIMIT_CPU 2 /* cpu usage (seconds) */
77 #define RLIMIT_DATA 3 /* max .data/sbrk size (bytes) */
78 #define RLIMIT_STACK 4 /* max stack size (bytes) */
79 #define RLIMIT_MEMLOCK 5 /* max locked memory region (bytes) */
80 #define RLIMIT_RSS 6 /* max RSS (bytes) */
81 #define RLIMIT_CORE 7 /* core file size (bytes) */
82 #define RLIMIT_FSIZE 8 /* max file size (bytes) */
83 #define __RLIMIT_NUM 9 /* number of limits */
84
85 struct rlimit {
86 __rlim_t rlim_cur; /* soft limit */
87 __rlim_t rlim_max; /* hard limit */
88 };
89
90 #define RLIM_INFINITY (~(__rlim_t)0)
91
92 #endif /* _KERN_RESOURCE_H_ */