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. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 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 $ 32 */ 33 34 #ifndef _SYS_RESOURCEVAR_H_ 35 #define _SYS_RESOURCEVAR_H_ 36 37 #ifndef _SYS_TYPES_H_ 38 #include <sys/types.h> 39 #endif 40 #ifndef _SYS_RESOURCE_H_ 41 #include <sys/resource.h> 42 #endif 43 #ifndef _SYS_QUEUE_H_ 44 #include <sys/queue.h> 45 #endif 46 #ifndef _SYS_VARSYM_H_ 47 #include <sys/varsym.h> 48 #endif 49 #ifndef _SYS_TIME_H_ 50 #include <sys/time.h> 51 #endif 52 #ifndef _SYS_SPINLOCK_H_ 53 #include <sys/spinlock.h> 54 #endif 55 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 */ 63 }; 64 65 #if defined(_KERNEL) || defined(_KERNEL_STRUCTURES) 66 67 /* 68 * For krateprintf() 69 */ 70 struct krate { 71 int freq; 72 int ticks; 73 int count; 74 }; 75 76 /* 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. 80 * 81 * Threaded programs force PLIMITF_EXCLUSIVE to prevent the proc->p_limit 82 * pointer from changing out from under threaded access. 83 * 84 * p_refcnt can change often, don't force cache mastership changes for 85 * the rest of the (usually read only) data structure. Place p_refcnt 86 * in its own cache line. 87 */ 88 struct plimit { 89 struct rlimit pl_rlimit[RLIM_NLIMITS]; 90 rlim_t p_cpulimit; /* current cpu limit in usec */ 91 struct { 92 struct spinlock p_spin; /* protect modifications */ 93 uint32_t p_refcnt; /* refs & exclusivity */ 94 } __cachealign; 95 } __cachealign; 96 97 #define PLIMITF_EXCLUSIVE 0x80000000U 98 #define PLIMITF_MASK 0x7FFFFFFFU 99 100 #define PLIMIT_TESTCPU_OK 0 101 #define PLIMIT_TESTCPU_XCPU 1 102 #define PLIMIT_TESTCPU_KILL 2 103 104 /* 105 * Per uid resource consumption 106 */ 107 struct uidinfo { 108 /* 109 * Protects access to ui_sbsize, ui_proccnt, ui_posixlocks 110 */ 111 struct spinlock ui_lock; /* not currently used (FUTURE) */ 112 LIST_ENTRY(uidinfo) ui_hash; 113 rlim_t ui_sbsize; /* socket buffer space consumed */ 114 long ui_proccnt; /* number of processes */ 115 uid_t ui_uid; /* uid */ 116 int ui_ref; /* reference count */ 117 int ui_posixlocks; /* number of POSIX locks */ 118 int ui_openfiles; /* number of open files */ 119 struct varsymset ui_varsymset; /* variant symlinks */ 120 }; 121 122 #endif 123 124 #ifdef _KERNEL 125 126 struct proc; 127 struct lwp; 128 129 void addupc_intr (struct proc *p, u_long pc, u_int ticks); 130 void addupc_task (struct proc *p, u_long pc, u_int ticks); 131 void calcru (struct lwp *lp, struct timeval *up, struct timeval *sp); 132 void calcru_proc (struct proc *p, struct rusage *ru); 133 int chgproccnt (struct uidinfo *uip, int diff, int max); 134 int chgsbsize (struct uidinfo *uip, u_long *hiwat, u_long to, rlim_t max); 135 void ruadd (struct rusage *ru, struct rusage *ru2); 136 struct uidinfo *uifind (uid_t uid); 137 struct uidinfo *uicreate(uid_t uid); 138 void uihold (struct uidinfo *uip); 139 void uidrop (struct uidinfo *uip); 140 void uireplace (struct uidinfo **puip, struct uidinfo *nuip); 141 void uihashinit (void); 142 143 void plimit_init0(struct plimit *); 144 struct plimit *plimit_fork(struct proc *); 145 u_int64_t plimit_getadjvalue(int i); 146 void plimit_lwp_fork(struct proc *); 147 int plimit_testcpulimit(struct plimit *, u_int64_t); 148 void plimit_modify(struct proc *, int, struct rlimit *); 149 void plimit_free(struct plimit *); 150 151 #endif 152 153 #endif /* !_SYS_RESOURCEVAR_H_ */ 154