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Annotation of os2sdk/demos/examples/vioreg/share.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * This is a common include file used by examples REGISTER, ACCESS, and
                      3:  * REPLACE  (found in VIOSUB.C).
                      4:  * It contains the declaration of the shared memory segment.
                      5:  *
                      6:  * Copyright (C) Microsoft Corp. 1988
                      7:  */
                      8: 
                      9: /* size of shared memory segment */
                     10: #define SHRSEGSIZE     sizeof(struct ShareRec)
                     11: 
                     12: #define SHRSEGNAME     "\\SHAREMEM\\SHARESEG.DAT"        /* shared seg name */
                     13: #define WAITFOREVER    -1L             /* no timeout if semaphore is owned */
                     14: 
                     15: struct ShareRec {
                     16:        unsigned long   updated;        /* buffer access semaphore */
                     17:        unsigned long   mutexsem;       /* buffer access semaphore */
                     18:        int             count;          /* buffer write pointer */
                     19:        int             totalength;
                     20: };

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