2 * Copyright (c) 1991, 1993
3 * The Regents of the University of California. All rights reserved.
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6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
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12 * documentation and/or other materials provided with the distribution.
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14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
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29 * @(#)resourcevar.h 8.4 (Berkeley) 1/9/95
30 * $FreeBSD: src/sys/sys/resourcevar.h,v 1.16.2.1 2000/09/07 19:13:55 truckman Exp $
31 * $DragonFly: src/sys/sys/resourcevar.h,v 1.16 2008/05/08 01:26:01 dillon Exp $
34 #ifndef _SYS_RESOURCEVAR_H_
35 #define _SYS_RESOURCEVAR_H_
38 #include <sys/types.h>
40 #ifndef _SYS_RESOURCE_H_
41 #include <sys/resource.h>
44 #include <sys/queue.h>
46 #ifndef _SYS_VARSYM_H_
47 #include <sys/varsym.h>
52 #ifndef _SYS_SPINLOCK_H_
53 #include <sys/spinlock.h>
56 struct uprof
{ /* profile arguments */
57 caddr_t pr_base
; /* buffer base */
58 u_long pr_size
; /* buffer size */
59 u_long pr_off
; /* pc offset */
60 u_long pr_scale
; /* pc scaling */
61 u_long pr_addr
; /* temp storage for addr until AST */
62 u_long pr_ticks
; /* temp storage for ticks until AST */
65 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES)
77 * Kernel shareable process resource limits. Because this structure
78 * is moderately large but changes infrequently, it is normally
79 * shared copy-on-write after forks.
81 * Threaded programs force p_exclusive (set it to 2) to prevent the
82 * proc->p_limit pointer from changing out from under threaded access.
85 struct rlimit pl_rlimit
[RLIM_NLIMITS
];
86 int p_refcnt
; /* number of references */
87 int p_exclusive
; /* exclusive to proc due to lwp's */
88 rlim_t p_cpulimit
; /* current cpu limit in usec */
89 struct spinlock p_spin
;
92 #define PLIMIT_TESTCPU_OK 0
93 #define PLIMIT_TESTCPU_XCPU 1
94 #define PLIMIT_TESTCPU_KILL 2
97 * Per uid resource consumption
101 * Protects access to ui_sbsize, ui_proccnt, ui_posixlocks
103 struct spinlock ui_lock
;
104 LIST_ENTRY(uidinfo
) ui_hash
;
105 rlim_t ui_sbsize
; /* socket buffer space consumed */
106 long ui_proccnt
; /* number of processes */
107 uid_t ui_uid
; /* uid */
108 int ui_ref
; /* reference count */
109 int ui_posixlocks
; /* number of POSIX locks */
110 int ui_openfiles
; /* number of open files */
111 struct varsymset ui_varsymset
; /* variant symlinks */
121 void addupc_intr (struct proc
*p
, u_long pc
, u_int ticks
);
122 void addupc_task (struct proc
*p
, u_long pc
, u_int ticks
);
123 void calcru (struct lwp
*lp
, struct timeval
*up
, struct timeval
*sp
);
124 void calcru_proc (struct proc
*p
, struct rusage
*ru
);
125 int chgproccnt (struct uidinfo
*uip
, int diff
, int max
);
126 int chgsbsize (struct uidinfo
*uip
, u_long
*hiwat
, u_long to
, rlim_t max
);
127 void ruadd (struct rusage
*ru
, struct rusage
*ru2
);
128 struct uidinfo
*uifind (uid_t uid
);
129 void uihold (struct uidinfo
*uip
);
130 void uidrop (struct uidinfo
*uip
);
131 void uireplace (struct uidinfo
**puip
, struct uidinfo
*nuip
);
132 void uihashinit (void);
134 void plimit_init0(struct plimit
*);
135 struct plimit
*plimit_fork(struct proc
*);
136 void plimit_lwp_fork(struct proc
*);
137 int plimit_testcpulimit(struct plimit
*, u_int64_t
);
138 void plimit_modify(struct proc
*, int, struct rlimit
*);
139 void plimit_free(struct proc
*);
143 #endif /* !_SYS_RESOURCEVAR_H_ */