1/* $OpenBSD: resourcevar.h,v 1.35 2024/10/24 23:24:58 jsg Exp $ */
2/* $NetBSD: resourcevar.h,v 1.12 1995/11/22 23:01:53 cgd Exp $ */
3
4/*
5 * Copyright (c) 1991, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)resourcevar.h 8.3 (Berkeley) 2/22/94
33 */
34
35#ifndef _SYS_RESOURCEVAR_H_
36#define _SYS_RESOURCEVAR_H_
37
38#include <sys/refcnt.h>
39
40/*
41 * Kernel shareable process resource limits. Because this structure
42 * is moderately large but changes infrequently, it is shared
43 * copy-on-write after forks.
44 */
45struct plimit {
46 struct rlimit pl_rlimit[RLIM_NLIMITS];
47 struct refcnt pl_refcnt;
48};
49
50/* add user profiling from AST */
51#define ADDUPROF(p) \
52do { \
53 atomic_clearbits_int(&(p)->p_flag, P_OWEUPC); \
54 addupc_task((p), (p)->p_prof_addr, (p)->p_prof_ticks); \
55 (p)->p_prof_ticks = 0; \
56} while (0)
57
58#ifdef _KERNEL
59
60#include <lib/libkern/libkern.h> /* for KASSERT() */
61
62extern uint64_t profclock_period;
63
64void addupc_intr(struct proc *, u_long, u_long);
65void addupc_task(struct proc *, u_long, u_int);
66struct clockrequest;
67void profclock(struct clockrequest *, void *, void *);
68void tuagg_add_process(struct process *, struct proc *);
69void tuagg_add_runtime(void);
70struct tusage;
71void tuagg_get_proc(struct tusage *, struct proc *);
72void tuagg_get_process(struct tusage *, struct process *);
73void calctsru(struct tusage *, struct timespec *, struct timespec *,
74 struct timespec *);
75void calcru(struct tusage *, struct timeval *, struct timeval *,
76 struct timeval *);
77void lim_startup(struct plimit *);
78void lim_free(struct plimit *);
79void lim_fork(struct process *, struct process *);
80struct plimit *lim_read_enter(void);
81
82/*
83 * Finish read access to resource limits.
84 */
85static inline void
86lim_read_leave(struct plimit *limit)
87{
88 /* nothing */
89}
90
91/*
92 * Get the value of the resource limit in current process.
93 */
94static inline rlim_t
95lim_cur(int which)
96{
97 struct plimit *limit;
98 rlim_t val;
99
100 KASSERT(which >= 0 && which < RLIM_NLIMITS);
101
102 limit = lim_read_enter();
103 val = limit->pl_rlimit[which].rlim_cur;
104 lim_read_leave(limit);
105 return (val);
106}
107
108rlim_t lim_cur_proc(struct proc *, int);
109
110void ruadd(struct rusage *, const struct rusage *);
111void rucheck(void *);
112
113#endif
114#endif /* !_SYS_RESOURCEVAR_H_ */