FreeBSD/Linux Kernel Cross Reference
sys/sys/resource.h
1 /* $NetBSD: resource.h,v 1.29.72.1 2009/04/01 00:25:22 snj 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 #define RLIMIT_AS 10 /* virtual process size (inclusive of mmap) */
96 #define RLIMIT_VMEM RLIMIT_AS /* common alias */
97
98 #if defined(_NETBSD_SOURCE)
99 #define RLIM_NLIMITS 11 /* number of resource limits */
100 #endif
101
102 #define RLIM_INFINITY (~((u_quad_t)1 << 63)) /* no limit */
103 #define RLIM_SAVED_MAX RLIM_INFINITY /* unrepresentable hard limit */
104 #define RLIM_SAVED_CUR RLIM_INFINITY /* unrepresentable soft limit */
105
106 #if defined(_KERNEL)
107 /* 4.3BSD compatibility rlimit argument structure. */
108 struct orlimit {
109 int32_t rlim_cur; /* current (soft) limit */
110 int32_t rlim_max; /* maximum value for rlim_cur */
111 };
112 #endif
113
114 struct rlimit {
115 rlim_t rlim_cur; /* current (soft) limit */
116 rlim_t rlim_max; /* maximum value for rlim_cur */
117 };
118
119 #if defined(_NETBSD_SOURCE)
120 /* Load average structure. */
121 struct loadavg {
122 fixpt_t ldavg[3];
123 long fscale;
124 };
125 #endif
126
127 #ifdef _KERNEL
128 extern struct loadavg averunnable;
129 struct pcred;
130 int dosetrlimit(struct lwp *, struct proc *, int, struct rlimit *);
131 int donice(struct lwp *, struct proc *, int);
132
133 #else
134 #include <sys/cdefs.h>
135
136 __BEGIN_DECLS
137 int getpriority(int, id_t);
138 int getrlimit(int, struct rlimit *);
139 int getrusage(int, struct rusage *);
140 int setpriority(int, id_t, int);
141 int setrlimit(int, const struct rlimit *);
142 __END_DECLS
143
144 #endif /* _KERNEL */
145 #endif /* !_SYS_RESOURCE_H_ */
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