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Annotation of OpenXM_contrib/gc/include/gc_copy_descr.h, Revision 1.1

1.1     ! maekawa     1:
        !             2: /*
        !             3:  * Copyright (c) 1999 by Silicon Graphics.  All rights reserved.
        !             4:  *
        !             5:  * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED
        !             6:  * OR IMPLIED.  ANY USE IS AT YOUR OWN RISK.
        !             7:  *
        !             8:  * Permission is hereby granted to use or copy this program
        !             9:  * for any purpose,  provided the above notices are retained on all copies.
        !            10:  * Permission to modify the code and to distribute modified code is granted,
        !            11:  * provided the above notices are retained, and a notice that the code was
        !            12:  * modified is included with the above copyright notice.
        !            13:  */
        !            14: /* Descriptor for allocation request. May be redefined by client. */
        !            15: typedef struct {
        !            16:     GC_word bitmap;    /* Bitmap describing pointer locations. */
        !            17:                        /* High order bit correspond to 0th     */
        !            18:                        /* word.  2 lsbs must be 0.             */
        !            19:     size_t length;      /* In bytes, must be multiple of word  */
        !            20:                        /* size.  Must be >0, <= 512            */
        !            21: } * GC_copy_descriptor;
        !            22:
        !            23: /* The collector accesses descriptors only through these two macros. */
        !            24: #define GC_SIZE_FROM_DESCRIPTOR(d) ((d) -> length)
        !            25: #define GC_BIT_MAP_FROM_DESCRIPTOR(d) ((d) -> bitmap)
        !            26: