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Annotation of coherent/f/usr/include.78/sys/alloc.h, revision 1.1

1.1     ! root        1: /* (-lgl
        !             2:  *     COHERENT Version 3.0
        !             3:  *     Copyright (c) 1982, 1990 by Mark Williams Company.
        !             4:  *     All rights reserved. May not be copied without permission.
        !             5:  -lgl) */
        !             6: /*
        !             7:  * Allocator.
        !             8:  */
        !             9: #ifndef         __SYS_ALLOC_H__
        !            10: #define         __SYS_ALLOC_H__
        !            11: 
        !            12: /*
        !            13:  * Structure for allocator.
        !            14:  */
        !            15: typedef struct all {
        !            16:        union all_u {
        !            17:                char    *au_link;
        !            18:                char    au_free[2];
        !            19:        }       a_union;
        !            20:        char    a_data[];
        !            21: } ALL;
        !            22: 
        !            23: /*
        !            24:  * Macros to transparently access allocator union.
        !            25:  */
        !            26: #define        a_link  a_union.au_link
        !            27: #define        a_free  a_union.au_free
        !            28: 
        !            29: #if 0
        !            30: /*
        !            31:  * Portable defines for the allocator.
        !            32:  */
        !            33: #define align(p)       ((ALL *)NULL + ((p) - (ALL *)NULL))
        !            34: #define link(p)                (align((p)->a_link))
        !            35: #define        tstfree(p)      ((p)->a_link == (char *) link(p))
        !            36: #define setfree(p)     ((p)->a_link = (char *) link(p))
        !            37: #define setused(p)     ((p)->a_link = (char *) link(p) + 1)
        !            38: 
        !            39: #endif
        !            40: 
        !            41: #ifdef KERNEL
        !            42: /*
        !            43:  * Functions and externals.
        !            44:  */
        !            45: extern char    *alloc();
        !            46: extern ALL     *setarena();
        !            47: 
        !            48: #endif
        !            49: 
        !            50: #endif

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