1/* $OpenBSD: resourcevar.h,v 1.31 2023/10/17 00:04:02 cheloha 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#include <sys/timeout.h> 40 41/* 42 * Kernel shareable process resource limits. Because this structure 43 * is moderately large but changes infrequently, it is shared 44 * copy-on-write after forks. 45 */ 46struct plimit { 47 struct rlimit pl_rlimit[RLIM_NLIMITS]; 48 struct refcnt pl_refcnt; 49}; 50 51/* add user profiling from AST */ 52#define ADDUPROF(p) \ 53do { \ 54 atomic_clearbits_int(&(p)->p_flag, P_OWEUPC); \ 55 addupc_task((p), (p)->p_prof_addr, (p)->p_prof_ticks); \ 56 (p)->p_prof_ticks = 0; \ 57} while (0) 58 59#ifdef _KERNEL 60 61#include <lib/libkern/libkern.h> /* for KASSERT() */ 62 63extern uint64_t profclock_period; 64 65void addupc_intr(struct proc *, u_long, u_long); 66void addupc_task(struct proc *, u_long, u_int); 67struct clockrequest; 68void profclock(struct clockrequest *, void *, void *); 69void tuagg_locked(struct process *, struct proc *, const struct timespec *); 70void tuagg(struct process *, struct proc *); 71struct tusage; 72void calctsru(struct tusage *, struct timespec *, struct timespec *, 73 struct timespec *); 74void calcru(struct tusage *, struct timeval *, struct timeval *, 75 struct timeval *); 76void lim_startup(struct plimit *); 77void lim_free(struct plimit *); 78void lim_fork(struct process *, struct process *); 79struct plimit *lim_read_enter(void); 80 81/* 82 * Finish read access to resource limits. 83 */ 84static inline void 85lim_read_leave(struct plimit *limit) 86{ 87 /* nothing */ 88} 89 90/* 91 * Get the value of the resource limit in current process. 92 */ 93static inline rlim_t 94lim_cur(int which) 95{ 96 struct plimit *limit; 97 rlim_t val; 98 99 KASSERT(which >= 0 && which < RLIM_NLIMITS); 100 101 limit = lim_read_enter(); 102 val = limit->pl_rlimit[which].rlim_cur; 103 lim_read_leave(limit); 104 return (val); 105} 106 107rlim_t lim_cur_proc(struct proc *, int); 108 109void ruadd(struct rusage *, struct rusage *); 110void rucheck(void *); 111#endif 112#endif /* !_SYS_RESOURCEVAR_H_ */ 113