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 */ 45 struct 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) \ 52 do { \ 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 62 extern uint64_t profclock_period; 63 64 void addupc_intr(struct proc *, u_long, u_long); 65 void addupc_task(struct proc *, u_long, u_int); 66 struct clockrequest; 67 void profclock(struct clockrequest *, void *, void *); 68 void tuagg_add_process(struct process *, struct proc *); 69 void tuagg_add_runtime(void); 70 struct tusage; 71 void tuagg_get_proc(struct tusage *, struct proc *); 72 void tuagg_get_process(struct tusage *, struct process *); 73 void calctsru(struct tusage *, struct timespec *, struct timespec *, 74 struct timespec *); 75 void calcru(struct tusage *, struct timeval *, struct timeval *, 76 struct timeval *); 77 void lim_startup(struct plimit *); 78 void lim_free(struct plimit *); 79 void lim_fork(struct process *, struct process *); 80 struct plimit *lim_read_enter(void); 81 82 /* 83 * Finish read access to resource limits. 84 */ 85 static inline void 86 lim_read_leave(struct plimit *limit) 87 { 88 /* nothing */ 89 } 90 91 /* 92 * Get the value of the resource limit in current process. 93 */ 94 static inline rlim_t 95 lim_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 } 107 108 rlim_t lim_cur_proc(struct proc *, int); 109 110 void ruadd(struct rusage *, const struct rusage *); 111 void rucheck(void *); 112 113 #endif 114 #endif /* !_SYS_RESOURCEVAR_H_ */ 115