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/5.0/sys/sys/resourcevar.h 104719 2002-10-09 17:17:24Z 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 #define pstat_endzero pstat_startcopy
56
57 #define pstat_startcopy p_timer
58 struct itimerval p_timer[3]; /* virtual-time timers */
59
60 struct uprof { /* profile arguments */
61 caddr_t pr_base; /* buffer base */
62 u_long pr_size; /* buffer size */
63 u_long pr_off; /* pc offset */
64 u_long pr_scale; /* pc scaling */
65 u_long pr_addr; /* temp storage for addr until AST */
66 u_int pr_ticks; /* temp storage for ticks until AST */
67 } p_prof;
68 #define pstat_endcopy p_start
69 struct timeval p_start; /* starting time */
70 };
71
72 /*
73 * Kernel shareable process resource limits. Because this structure
74 * is moderately large but changes infrequently, it is normally
75 * shared copy-on-write after forks. If a group of processes
76 * ("threads") share modifications, the PL_SHAREMOD flag is set,
77 * and a copy must be made for the child of a new fork that isn't
78 * sharing modifications to the limits.
79 */
80 struct plimit {
81 struct rlimit pl_rlimit[RLIM_NLIMITS];
82 #define PL_SHAREMOD 0x01 /* modifications are shared */
83 int p_lflags;
84 int p_refcnt; /* number of references */
85 };
86
87 #ifdef _KERNEL
88
89 /*
90 * Per uid resource consumption
91 */
92 struct uidinfo {
93 LIST_ENTRY(uidinfo) ui_hash;
94 rlim_t ui_sbsize; /* socket buffer space consumed */
95 long ui_proccnt; /* number of processes */
96 uid_t ui_uid; /* uid */
97 u_short ui_ref; /* reference count */
98 struct mtx *ui_mtxp; /* protect all counts/limits */
99 };
100
101 #define UIDINFO_LOCK(ui) mtx_lock((ui)->ui_mtxp)
102 #define UIDINFO_UNLOCK(ui) mtx_unlock((ui)->ui_mtxp)
103
104 struct thread;
105 struct kse;
106 struct proc;
107
108 void addupc_intr(struct kse *ke, uintptr_t pc, u_int ticks);
109 void addupc_task(struct kse *ke, uintptr_t pc, u_int ticks);
110 void calcru(struct proc *p, struct timeval *up, struct timeval *sp,
111 struct timeval *ip);
112 int chgproccnt(struct uidinfo *uip, int diff, int max);
113 int chgsbsize(struct uidinfo *uip, u_int *hiwat, u_int to,
114 rlim_t max);
115 int fuswintr(void *base);
116 struct plimit
117 *limcopy(struct plimit *lim);
118 void ruadd(struct rusage *ru, struct rusage *ru2);
119 int suswintr(void *base, int word);
120 struct uidinfo
121 *uifind(uid_t uid);
122 void uihold(struct uidinfo *uip);
123 void uifree(struct uidinfo *uip);
124 void uihashinit(void);
125 #endif
126
127 #endif /* !_SYS_RESOURCEVAR_H_ */
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