FreeBSD/Linux Kernel Cross Reference
sys/sys/resource.h
1 /*
2 * Copyright (c) 1982, 1986, 1993
3 * The Regents of the University of California. All rights reserved.
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)resource.h 8.4 (Berkeley) 1/9/95
34 * $FreeBSD: releng/5.1/sys/sys/resource.h 110999 2003-02-16 13:30:29Z phk $
35 */
36
37 #ifndef _SYS_RESOURCE_H_
38 #define _SYS_RESOURCE_H_
39
40 /*
41 * Process priority specifications to get/setpriority.
42 */
43 #define PRIO_MIN -20
44 #define PRIO_MAX 20
45 #ifdef _KERNEL
46 #define PRIO_TOTAL (PRIO_MAX - PRIO_MIN)
47 #endif /* _KERNEL */
48
49 #define PRIO_PROCESS 0
50 #define PRIO_PGRP 1
51 #define PRIO_USER 2
52
53 /*
54 * Resource utilization information.
55 */
56
57 #define RUSAGE_SELF 0
58 #define RUSAGE_CHILDREN -1
59
60 struct rusage {
61 struct timeval ru_utime; /* user time used */
62 struct timeval ru_stime; /* system time used */
63 long ru_maxrss; /* max resident set size */
64 #define ru_first ru_ixrss
65 long ru_ixrss; /* integral shared memory size */
66 long ru_idrss; /* integral unshared data " */
67 long ru_isrss; /* integral unshared stack " */
68 long ru_minflt; /* page reclaims */
69 long ru_majflt; /* page faults */
70 long ru_nswap; /* swaps */
71 long ru_inblock; /* block input operations */
72 long ru_oublock; /* block output operations */
73 long ru_msgsnd; /* messages sent */
74 long ru_msgrcv; /* messages received */
75 long ru_nsignals; /* signals received */
76 long ru_nvcsw; /* voluntary context switches */
77 long ru_nivcsw; /* involuntary " */
78 #define ru_last ru_nivcsw
79 };
80
81 /*
82 * Resource limits
83 */
84 #define RLIMIT_CPU 0 /* cpu time in milliseconds */
85 #define RLIMIT_FSIZE 1 /* maximum file size */
86 #define RLIMIT_DATA 2 /* data size */
87 #define RLIMIT_STACK 3 /* stack size */
88 #define RLIMIT_CORE 4 /* core file size */
89 #define RLIMIT_RSS 5 /* resident set size */
90 #define RLIMIT_MEMLOCK 6 /* locked-in-memory address space */
91 #define RLIMIT_NPROC 7 /* number of processes */
92 #define RLIMIT_NOFILE 8 /* number of open files */
93 #define RLIMIT_SBSIZE 9 /* maximum size of all socket buffers */
94 #define RLIMIT_VMEM 10 /* virtual process size (inclusive of mmap) */
95
96 #define RLIM_NLIMITS 11 /* number of resource limits */
97
98 #define RLIM_INFINITY ((rlim_t)(((u_quad_t)1 << 63) - 1))
99
100
101 /*
102 * Resource limit string identifiers
103 */
104
105 #ifdef _RLIMIT_IDENT
106 static char *rlimit_ident[] = {
107 "cpu",
108 "fsize",
109 "data",
110 "stack",
111 "core",
112 "rss",
113 "memlock",
114 "nproc",
115 "nofile",
116 "sbsize",
117 "vmem",
118 };
119 #endif
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 #define CP_USER 0
138 #define CP_NICE 1
139 #define CP_SYS 2
140 #define CP_INTR 3
141 #define CP_IDLE 4
142 #define CPUSTATES 5
143
144 #ifdef _KERNEL
145 extern struct loadavg averunnable;
146 extern long cp_time[CPUSTATES];
147
148 int dosetrlimit(struct thread *, u_int, struct rlimit *);
149
150 #else
151 #include <sys/cdefs.h>
152
153 __BEGIN_DECLS
154 int getpriority(int, int);
155 int getrlimit(int, struct rlimit *);
156 int getrusage(int, struct rusage *);
157 int setpriority(int, int, int);
158 int setrlimit(int, const struct rlimit *);
159 __END_DECLS
160
161 #endif /* _KERNEL */
162 #endif /* !_SYS_RESOURCE_H_ */
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