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Annotation of sys/sys/resourcevar.h, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: resourcevar.h,v 1.11 2007/03/15 10:22:30 art 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/timeout.h>
                     39:
                     40: /*
                     41:  * Kernel per-process accounting / statistics
                     42:  * (not necessarily resident except when running).
                     43:  */
                     44: struct pstats {
                     45: #define        pstat_startzero p_ru
                     46:        struct  rusage p_ru;            /* stats for this proc */
                     47:        struct  rusage p_cru;           /* sum of stats for reaped children */
                     48:        struct  itimerval p_timer[3];   /* virtual-time timers */
                     49: #define        pstat_endzero   pstat_startcopy
                     50:
                     51: #define        pstat_startcopy p_prof
                     52:        struct uprof {                  /* profile arguments */
                     53:                caddr_t pr_base;        /* buffer base */
                     54:                size_t  pr_size;        /* buffer size */
                     55:                u_long  pr_off;         /* pc offset */
                     56:                u_int   pr_scale;       /* pc scaling */
                     57:                u_long  pr_addr;        /* temp storage for addr until AST */
                     58:                u_long  pr_ticks;       /* temp storage for ticks until AST */
                     59:        } p_prof;
                     60: #define        pstat_endcopy   p_start
                     61:        struct  timeval p_start;        /* starting time */
                     62:        struct  timeout p_virt_to;      /* virtual itimer trampoline. */
                     63:        struct  timeout p_prof_to;      /* prof itimer trampoline. */
                     64: };
                     65:
                     66: /*
                     67:  * Kernel shareable process resource limits.  Because this structure
                     68:  * is moderately large but changes infrequently, it is normally
                     69:  * shared copy-on-write after forks.  If a group of processes
                     70:  * ("threads") share modifications, the PL_SHAREMOD flag is set,
                     71:  * and a copy must be made for the child of a new fork that isn't
                     72:  * sharing modifications to the limits.
                     73:  */
                     74: struct plimit {
                     75:        struct  rlimit pl_rlimit[RLIM_NLIMITS];
                     76: #define        PL_SHAREMOD     0x01            /* modifications are shared */
                     77:        int     p_lflags;
                     78:        int     p_refcnt;               /* number of references */
                     79: };
                     80:
                     81: /* add user profiling from AST */
                     82: #define        ADDUPROF(p)                                                     \
                     83: do {                                                                   \
                     84:        atomic_clearbits_int(&(p)->p_flag, P_OWEUPC);                   \
                     85:        addupc_task((p), (p)->p_stats->p_prof.pr_addr,                  \
                     86:            (p)->p_stats->p_prof.pr_ticks);                             \
                     87:        (p)->p_stats->p_prof.pr_ticks = 0;                              \
                     88: } while (0)
                     89:
                     90: #ifdef _KERNEL
                     91: void    addupc_intr(struct proc *p, u_long pc);
                     92: void    addupc_task(struct proc *p, u_long pc, u_int ticks);
                     93: void    calcru(struct proc *p, struct timeval *up, struct timeval *sp,
                     94:            struct timeval *ip);
                     95: struct plimit *limcopy(struct plimit *lim);
                     96: void   limfree(struct plimit *);
                     97:
                     98: void    ruadd(struct rusage *ru, struct rusage *ru2);
                     99:
                    100: void   virttimer_trampoline(void *);
                    101: void   proftimer_trampoline(void *);
                    102: #endif
                    103: #endif /* !_SYS_RESOURCEVAR_H_ */