bsd/sys/resourcevar.h

   1 /*
   2  * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
  29 /*
  30  * Copyright (c) 1991, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * Redistribution and use in source and binary forms, with or without
  34  * modification, are permitted provided that the following conditions
  35  * are met:
  36  * 1. Redistributions of source code must retain the above copyright
  37  *    notice, this list of conditions and the following disclaimer.
  38  * 2. Redistributions in binary form must reproduce the above copyright
  39  *    notice, this list of conditions and the following disclaimer in the
  40  *    documentation and/or other materials provided with the distribution.
  41  * 3. All advertising materials mentioning features or use of this software
  42  *    must display the following acknowledgement:
  43  *      This product includes software developed by the University of
  44  *      California, Berkeley and its contributors.
  45  * 4. Neither the name of the University nor the names of its contributors
  46  *    may be used to endorse or promote products derived from this software
  47  *    without specific prior written permission.
  48  *
  49  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  50  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  51  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  52  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  53  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  54  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  55  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  56  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  57  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  58  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  59  * SUCH DAMAGE.
  60  *
  61  *      @(#)resourcevar.h       8.4 (Berkeley) 1/9/95
  62  */
  63
  64 #ifndef _SYS_RESOURCEVAR_H_
  65 #define _SYS_RESOURCEVAR_H_
  66
  67 #include <sys/appleapiopts.h>
  68
  69 /*
  70  * Kernel per-process accounting / statistics
  71  * (not necessarily resident except when running).
  72  */
  73 struct pstats {
  74 #define pstat_startzero p_ru
  75         struct  rusage p_ru;            /* stats for this proc */
  76         struct  rusage p_cru;           /* (PL) sum of stats for reaped children */
  77
  78         struct uprof {                  /* profile arguments */
  79                 struct uprof *pr_next;  /* multiple prof buffers allowed */
  80                 caddr_t pr_base;        /* buffer base */
  81                 u_long  pr_size;        /* buffer size */
  82                 u_long  pr_off;         /* pc offset */
  83                 u_long  pr_scale;       /* pc scaling */
  84                 u_long  pr_addr;        /* temp storage for addr until AST */
  85                 u_long  pr_ticks;       /* temp storage for ticks until AST */
  86         } p_prof;
  87 #define pstat_endzero   p_start
  88
  89         struct  timeval p_start;        /* starting time ; compat only */
  90 #ifdef KERNEL
  91         struct user_uprof {                         /* profile arguments */
  92                 struct user_uprof *pr_next;  /* multiple prof buffers allowed */
  93                 user_addr_t         pr_base;    /* buffer base */
  94                 user_size_t         pr_size;    /* buffer size */
  95                 user_ulong_t    pr_off;         /* pc offset */
  96                 user_ulong_t    pr_scale;       /* pc scaling */
  97                 user_ulong_t    pr_addr;        /* temp storage for addr until AST */
  98                 user_ulong_t    pr_ticks;       /* temp storage for ticks until AST */
  99         } user_p_prof;
 100 #endif // KERNEL
 101 };
 102
 103 /*
 104  * Kernel shareable process resource limits.  Because this structure
 105  * is moderately large but changes infrequently, it is normally
 106  * shared copy-on-write after forks.  If a group of processes
 107  * ("threads") share modifications, the PL_SHAREMOD flag is set,
 108  * and a copy must be made for the child of a new fork that isn't
 109  * sharing modifications to the limits.
 110  */
 111 /*
 112  * Modifications are done with the list lock held (p_limit as well)and access indv
 113  * limits can be done without limit as we keep the old copy in p_olimit. Which is
 114  * dropped in proc_exit. This way all access will have a valid kernel address
 115  */
 116 struct plimit {
 117         struct  rlimit pl_rlimit[RLIM_NLIMITS];
 118         int     pl_refcnt;              /* number of references */
 119 };
 120
 121 #ifdef KERNEL
 122 /* add user profiling from AST */
 123 #define ADDUPROF(p)                                                     \
 124     addupc_task(p,                                                      \
 125                 (proc_is64bit((p)) ? (p)->p_stats->user_p_prof.pr_addr \
 126                                    : CAST_USER_ADDR_T((p)->p_stats->p_prof.pr_addr)), \
 127                 (proc_is64bit((p)) ? (p)->p_stats->user_p_prof.pr_ticks \
 128                                    : (p)->p_stats->p_prof.pr_ticks))
 129
 130 void     addupc_intr(struct proc *p, u_long pc, u_int ticks);
 131 void     addupc_task(struct proc *p, user_addr_t pc, u_int ticks);
 132 void     calcru(struct proc *p, struct timeval *up, struct timeval *sp,
 133             struct timeval *ip);
 134 void     ruadd(struct rusage *ru, struct rusage *ru2);
 135 void proc_limitget(proc_t p, int whichi, struct rlimit * limp);
 136 void proc_limitdrop(proc_t p, int exiting);
 137 void proc_limitfork(proc_t parent, proc_t child);
 138 int proc_limitreplace(proc_t p);
 139 void proc_limitblock(proc_t);
 140 void proc_limitunblock(proc_t);
 141 #endif /* KERNEL */
 142
 143
 144 #endif  /* !_SYS_RESOURCEVAR_H_ */