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Annotation of coherent/d/PS2_KERNEL/include/sys/rlock.h, revision 1.1

1.1     ! root        1: /* (-lgl
        !             2:  *     COHERENT Version 4.0
        !             3:  *     Copyright (c) 1982, 1992 by Mark Williams Company.
        !             4:  *     All rights reserved. May not be copied without permission.
        !             5:  -lgl) */
        !             6: /*
        !             7:  * /usr/include/sys/rlock.h
        !             8:  * Record locking.
        !             9:  */
        !            10: 
        !            11: #ifndef _RLOCK_H
        !            12: #define _RLOCK_H
        !            13: 
        !            14: /*
        !            15:  * Internal record lock.
        !            16:  * Active locks are attached to inode.
        !            17:  */
        !            18: typedef struct rlock   {
        !            19:        struct  rlock   *rl_next;       /* link, must be first          */
        !            20:        int             rl_type;        /* 0==read, 1==write            */
        !            21:        long            rl_start;
        !            22:        long            rl_end;         /* -1 is EOF                    */
        !            23:        PROC            *rl_proc;       /* owner's process              */
        !            24: } RLOCK;
        !            25: 
        !            26: /* Pending record lock. */
        !            27: typedef struct prlock  {
        !            28:        struct  prlock  *prl_next;      /* link, must be first          */
        !            29:        RLOCK           *prl_rls;       /* active locks on desired inode */
        !            30:        RLOCK           *prl_rl;        /* desired lock                 */
        !            31: } PRLOCK;
        !            32: 
        !            33: extern RLOCK   *freerl;                /* list of free record locks    */
        !            34: extern PRLOCK  *pendrl;                /* list of all pending locks    */
        !            35: extern GATE    rlgate;                 /* only one proc changes locks at a time */
        !            36: 
        !            37: #endif
        !            38: 
        !            39: /* end of sys/rlock.h */

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