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Annotation of 43BSDReno/contrib/isode-beta/ftam/ftamconctl.c, revision 1.1

1.1     ! root        1: /* ftamconctl.c - FPM: encode/decode concurrency control */
        !             2: 
        !             3: #ifndef        lint
        !             4: static char *rcsid = "$Header: /f/osi/ftam/RCS/ftamconctl.c,v 7.2 90/07/09 14:36:42 mrose Exp $";
        !             5: #endif
        !             6: 
        !             7: /* 
        !             8:  * $Header: /f/osi/ftam/RCS/ftamconctl.c,v 7.2 90/07/09 14:36:42 mrose Exp $
        !             9:  *
        !            10:  *
        !            11:  * $Log:       ftamconctl.c,v $
        !            12:  * Revision 7.2  90/07/09  14:36:42  mrose
        !            13:  * sync
        !            14:  * 
        !            15:  * Revision 7.1  90/03/23  10:54:01  mrose
        !            16:  * update
        !            17:  * 
        !            18:  * Revision 7.0  89/11/23  21:53:31  mrose
        !            19:  * Release 6.0
        !            20:  * 
        !            21:  */
        !            22: 
        !            23: /*
        !            24:  *                               NOTICE
        !            25:  *
        !            26:  *    Acquisition, use, and distribution of this module and related
        !            27:  *    materials are subject to the restrictions of a license agreement.
        !            28:  *    Consult the Preface in the User's Manual for the full terms of
        !            29:  *    this agreement.
        !            30:  *
        !            31:  */
        !            32: 
        !            33: /* LINTLIBRARY */
        !            34: 
        !            35: #include <stdio.h>
        !            36: #include "fpkt.h"
        !            37: 
        !            38: /*    DATA */
        !            39: 
        !            40: static int fc2lock[] = {
        !            41:     int_FTAM_Lock_shared, int_FTAM_Lock_exclusive,
        !            42:     int_FTAM_Lock_not__required, int_FTAM_Lock_no__access
        !            43: };
        !            44: 
        !            45: static int lock2fc[] = {
        !            46:     FLOCK_NOTREQD, FLOCK_SHARED, FLOCK_EXCLUSIVE, FLOCK_NOACCESS
        !            47: };
        !            48: 
        !            49: 
        !            50: #define FCON_NOTREQD   0x01
        !            51: #define FCON_SHARED     0x02
        !            52: #define FCON_EXCLUSIVE  0x04
        !            53: #define FCON_NOACCESS   0x08
        !            54: 
        !            55: struct pair fconctl_pairs [] = {
        !            56:               FCON_NOTREQD, bit_FTAM_Concurrency__Key_not__required,
        !            57:               FCON_SHARED, bit_FTAM_Concurrency__Key_shared,
        !            58:               FCON_EXCLUSIVE, bit_FTAM_Concurrency__Key_exclusive,
        !            59:               FCON_NOACCESS, bit_FTAM_Concurrency__Key_no__access,
        !            60:               0, 0
        !            61: };
        !            62: 
        !            63: /*  */
        !            64: 
        !            65: struct type_FTAM_Concurrency__Control *conctl2fpm (fsb, fc, fti)
        !            66: register struct ftamblk *fsb;
        !            67: register struct FTAMconcurrency *fc;
        !            68: struct FTAMindication *fti;
        !            69: {
        !            70:     register struct type_FTAM_Concurrency__Control *fpm;
        !            71: 
        !            72:     if ((fpm = (struct type_FTAM_Concurrency__Control *)
        !            73:                    calloc (1, sizeof *fpm)) == NULL) {
        !            74: no_mem: ;
        !            75:        (void) ftamlose (fti, FS_GEN (fsb), 1, NULLCP, "out of memory");
        !            76:        if (fpm)
        !            77:            free_FTAM_Concurrency__Control (fpm);
        !            78:        return NULL;
        !            79:     }
        !            80: 
        !            81: #define        dolock(s,t) \
        !            82: { \
        !            83:     if ((fpm -> s = (struct type_FTAM_Lock *) \
        !            84:                            calloc (1, sizeof *fpm -> s)) \
        !            85:            == NULL) \
        !            86:        goto no_mem; \
        !            87:     fpm -> s -> parm = fc2lock [fc -> t & FLOCK_MASK]; \
        !            88: }
        !            89:     dolock (read, fc_readlock);
        !            90:     dolock (insert, fc_insertlock);
        !            91:     dolock (replace, fc_replacelock);
        !            92:     dolock (extend, fc_extendlock);
        !            93:     dolock (erase, fc_eraselock);
        !            94:     dolock (read__attribute, fc_readattrlock);
        !            95:     dolock (change__attribute, fc_chngattrlock);
        !            96:     dolock (delete, fc_deletelock);
        !            97: #undef dolock
        !            98: 
        !            99:     return fpm;
        !           100: }
        !           101: 
        !           102: /*  */
        !           103: 
        !           104: /* ARGSUSED */
        !           105: 
        !           106: int    fpm2conctl (fsb, fpm, fc, fti)
        !           107: struct ftamblk *fsb;
        !           108: register struct type_FTAM_Concurrency__Control *fpm;
        !           109: register struct FTAMconcurrency *fc;
        !           110: struct FTAMindication *fti;
        !           111: {
        !           112:     FCINIT (fc);
        !           113: 
        !           114: #define        dolock(s,t) \
        !           115: { \
        !           116:     fc -> t = lock2fc [fpm -> s -> parm]; \
        !           117: }
        !           118:     dolock (read, fc_readlock);
        !           119:     dolock (insert, fc_insertlock);
        !           120:     dolock (replace, fc_replacelock);
        !           121:     dolock (extend, fc_extendlock);
        !           122:     dolock (erase, fc_eraselock);
        !           123:     dolock (read__attribute, fc_readattrlock);
        !           124:     dolock (change__attribute, fc_chngattrlock);
        !           125:     dolock (delete, fc_deletelock);
        !           126: #undef dolock
        !           127: 
        !           128:     return OK;
        !           129: }
        !           130: 
        !           131: /*  */
        !           132: 
        !           133: struct type_FTAM_Concurrency__Access *conacc2fpm (fsb, fc, fti)
        !           134: register struct ftamblk *fsb;
        !           135: register struct FTAMconcurrency *fc;
        !           136: struct FTAMindication *fti;
        !           137: {
        !           138:     register struct type_FTAM_Concurrency__Access *fpm;
        !           139:     int key;
        !           140: 
        !           141:     if ((fpm = (struct type_FTAM_Concurrency__Access *)
        !           142:                     calloc (1, sizeof *fpm)) == NULL) {
        !           143:         (void) ftamlose (fti, FS_GEN (fsb), 1, NULLCP, "out of memory");
        !           144:         if (fpm)
        !           145:             free_FTAM_Concurrency__Access (fpm);
        !           146:         return NULL;
        !           147:     }
        !           148: 
        !           149: #define dolock(s,t) \
        !           150: { \
        !           151:     key = (int) (fc -> t & FLOCK_MASK); \
        !           152:     fpm -> s = bits2fpm (fsb, fconctl_pairs, key, fti); \
        !           153: }
        !           154: 
        !           155:     dolock (read, fc_readlock);
        !           156:     dolock (insert, fc_insertlock);
        !           157:     dolock (replace, fc_replacelock);
        !           158:     dolock (extend, fc_extendlock);
        !           159:     dolock (erase, fc_eraselock);
        !           160:     dolock (read__attribute, fc_readattrlock);
        !           161:     dolock (change__attribute, fc_chngattrlock);
        !           162:     dolock (delete, fc_deletelock);
        !           163: #undef  dolock
        !           164: 
        !           165:     return fpm;
        !           166: }
        !           167: 
        !           168: 
        !           169: int     fpm2conacc (fsb, fpm, fc, fti)
        !           170: struct ftamblk *fsb;
        !           171: register struct type_FTAM_Concurrency__Access *fpm;
        !           172: register struct FTAMconcurrency *fc;
        !           173: struct FTAMindication *fti;
        !           174: {
        !           175:     int            key;
        !           176: 
        !           177:     FCINIT (fc);
        !           178: 
        !           179: #define dolock(s,t) \
        !           180: { \
        !           181:     key = fc -> t; \
        !           182:     (void) fpm2bits (fsb, fconctl_pairs, fpm -> s, &key, fti); \
        !           183: }
        !           184:     dolock (read, fc_readlock);
        !           185:     dolock (insert, fc_insertlock);
        !           186:     dolock (replace, fc_replacelock);
        !           187:     dolock (extend, fc_extendlock);
        !           188:     dolock (erase, fc_eraselock);
        !           189:     dolock (read__attribute, fc_readattrlock);
        !           190:     dolock (change__attribute, fc_chngattrlock);
        !           191:     dolock (delete, fc_deletelock);
        !           192: #undef  dolock
        !           193: 
        !           194:     return OK;
        !           195: 
        !           196: }

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