FreeBSD/Linux Kernel Cross Reference
sys/sys/resourcevar.h
1 /*
2 * Copyright (c) 1991, 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 * @(#)resourcevar.h 8.4 (Berkeley) 1/9/95
34 * $FreeBSD: releng/5.2/sys/sys/resourcevar.h 121636 2003-10-28 20:46:23Z jhb $
35 */
36
37 #ifndef _SYS_RESOURCEVAR_H_
38 #define _SYS_RESOURCEVAR_H_
39
40 #include <sys/resource.h>
41 #include <sys/queue.h>
42 #ifdef _KERNEL
43 #include <sys/_lock.h>
44 #include <sys/_mutex.h>
45 #endif
46
47 /*
48 * Kernel per-process accounting / statistics
49 * (not necessarily resident except when running).
50 */
51 struct pstats {
52 #define pstat_startzero p_ru
53 struct rusage p_ru; /* stats for this proc */
54 struct rusage p_cru; /* sum of stats for reaped children */
55 struct itimerval p_timer[3]; /* virtual-time timers */
56 #define pstat_endzero pstat_startcopy
57
58 #define pstat_startcopy p_prof
59 struct uprof { /* profile arguments */
60 caddr_t pr_base; /* buffer base */
61 u_long pr_size; /* buffer size */
62 u_long pr_off; /* pc offset */
63 u_long pr_scale; /* pc scaling */
64 u_long pr_addr; /* temp storage for addr until AST */
65 u_int pr_ticks; /* temp storage for ticks until AST */
66 } p_prof;
67 #define pstat_endcopy p_start
68 struct timeval p_start; /* starting time */
69 };
70
71 /*
72 * Kernel shareable process resource limits. Because this structure
73 * is moderately large but changes infrequently, it is normally
74 * shared copy-on-write after forks.
75 */
76 struct plimit {
77 struct rlimit pl_rlimit[RLIM_NLIMITS];
78 int p_refcnt; /* number of references */
79 };
80
81 #ifdef _KERNEL
82
83 /*
84 * Per uid resource consumption
85 */
86 struct uidinfo {
87 LIST_ENTRY(uidinfo) ui_hash;
88 rlim_t ui_sbsize; /* socket buffer space consumed */
89 long ui_proccnt; /* number of processes */
90 uid_t ui_uid; /* uid */
91 u_int ui_ref; /* reference count */
92 struct mtx *ui_mtxp; /* protect all counts/limits */
93 };
94
95 #define UIDINFO_LOCK(ui) mtx_lock((ui)->ui_mtxp)
96 #define UIDINFO_UNLOCK(ui) mtx_unlock((ui)->ui_mtxp)
97
98 struct thread;
99 struct kse;
100 struct proc;
101
102 void addupc_intr(struct thread *td, uintptr_t pc, u_int ticks);
103 void addupc_task(struct thread *td, uintptr_t pc, u_int ticks);
104 void calcru(struct proc *p, struct timeval *up, struct timeval *sp,
105 struct timeval *ip);
106 int chgproccnt(struct uidinfo *uip, int diff, int max);
107 int chgsbsize(struct uidinfo *uip, u_int *hiwat, u_int to,
108 rlim_t max);
109 int fuswintr(void *base);
110 struct plimit
111 *limcopy(struct plimit *lim);
112 void ruadd(struct rusage *ru, struct rusage *ru2);
113 int suswintr(void *base, int word);
114 struct uidinfo
115 *uifind(uid_t uid);
116 void uihold(struct uidinfo *uip);
117 void uifree(struct uidinfo *uip);
118 void uihashinit(void);
119 #endif
120
121 #endif /* !_SYS_RESOURCEVAR_H_ */
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