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Annotation of XNU/bsd/sys/resourcevar.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /* Copyright (c) 1995, 1997 Apple Computer, Inc. All Rights Reserved */
        !            23: /*
        !            24:  * Copyright (c) 1991, 1993
        !            25:  *     The Regents of the University of California.  All rights reserved.
        !            26:  *
        !            27:  * Redistribution and use in source and binary forms, with or without
        !            28:  * modification, are permitted provided that the following conditions
        !            29:  * are met:
        !            30:  * 1. Redistributions of source code must retain the above copyright
        !            31:  *    notice, this list of conditions and the following disclaimer.
        !            32:  * 2. Redistributions in binary form must reproduce the above copyright
        !            33:  *    notice, this list of conditions and the following disclaimer in the
        !            34:  *    documentation and/or other materials provided with the distribution.
        !            35:  * 3. All advertising materials mentioning features or use of this software
        !            36:  *    must display the following acknowledgement:
        !            37:  *     This product includes software developed by the University of
        !            38:  *     California, Berkeley and its contributors.
        !            39:  * 4. Neither the name of the University nor the names of its contributors
        !            40:  *    may be used to endorse or promote products derived from this software
        !            41:  *    without specific prior written permission.
        !            42:  *
        !            43:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            44:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            45:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            46:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            47:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            48:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            49:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            50:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            51:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            52:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            53:  * SUCH DAMAGE.
        !            54:  *
        !            55:  *     @(#)resourcevar.h       8.4 (Berkeley) 1/9/95
        !            56:  */
        !            57: 
        !            58: #ifndef        _SYS_RESOURCEVAR_H_
        !            59: #define        _SYS_RESOURCEVAR_H_
        !            60: 
        !            61: /*
        !            62:  * Kernel per-process accounting / statistics
        !            63:  * (not necessarily resident except when running).
        !            64:  */
        !            65: struct pstats {
        !            66: #define        pstat_startzero p_ru
        !            67:        struct  rusage p_ru;            /* stats for this proc */
        !            68:        struct  rusage p_cru;           /* sum of stats for reaped children */
        !            69: 
        !            70:        struct uprof {                  /* profile arguments */
        !            71:                struct uprof *pr_next;  /* multiple prof buffers allowed */
        !            72:                caddr_t pr_base;        /* buffer base */
        !            73:                u_long  pr_size;        /* buffer size */
        !            74:                u_long  pr_off;         /* pc offset */
        !            75:                u_long  pr_scale;       /* pc scaling */
        !            76:                u_long  pr_addr;        /* temp storage for addr until AST */
        !            77:                u_long  pr_ticks;       /* temp storage for ticks until AST */
        !            78:        } p_prof;
        !            79: #define        pstat_endzero   pstat_startcopy
        !            80: 
        !            81: #define        pstat_startcopy p_timer
        !            82:        struct  itimerval p_timer[3];   /* virtual-time timers */
        !            83: #define        pstat_endcopy   p_start
        !            84:        struct  timeval p_start;        /* starting time */
        !            85: };
        !            86: 
        !            87: /*
        !            88:  * Kernel shareable process resource limits.  Because this structure
        !            89:  * is moderately large but changes infrequently, it is normally
        !            90:  * shared copy-on-write after forks.  If a group of processes
        !            91:  * ("threads") share modifications, the PL_SHAREMOD flag is set,
        !            92:  * and a copy must be made for the child of a new fork that isn't
        !            93:  * sharing modifications to the limits.
        !            94:  */
        !            95: struct plimit {
        !            96:        struct  rlimit pl_rlimit[RLIM_NLIMITS];
        !            97: #define        PL_SHAREMOD     0x01            /* modifications are shared */
        !            98:        int     p_lflags;
        !            99:        int     p_refcnt;               /* number of references */
        !           100: };
        !           101: 
        !           102: /* add user profiling from AST */
        !           103: #define        ADDUPROF(p)                                                     \
        !           104:        addupc_task(p,                                                  \
        !           105:            (p)->p_stats->p_prof.pr_addr, (p)->p_stats->p_prof.pr_ticks)
        !           106: 
        !           107: #ifdef KERNEL
        !           108: void    addupc_intr __P((struct proc *p, u_long pc, u_int ticks));
        !           109: void    addupc_task __P((struct proc *p, u_long pc, u_int ticks));
        !           110: void    calcru __P((struct proc *p, struct timeval *up, struct timeval *sp,
        !           111:            struct timeval *ip));
        !           112: struct plimit
        !           113:        *limcopy __P((struct plimit *lim));
        !           114: void    ruadd __P((struct rusage *ru, struct rusage *ru2));
        !           115: #endif
        !           116: 
        !           117: #endif /* !_SYS_RESOURCEVAR_H_ */

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