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Annotation of coherent/b/lib/libc/gen/old/notmem.c, revision 1.1

1.1     ! root        1: 
        !             2: /*
        !             3:  * Tell if this block of memory is in the malloc area
        !             4:  */
        !             5: 
        !             6: #include <stdio.h>
        !             7: #include <malloc.h>
        !             8: 
        !             9: extern  struct mblock  *_a_scanp;      /* first arena */
        !            10: 
        !            11: notmem(cp)
        !            12: char *cp;
        !            13: {
        !            14:        register unsigned len;
        !            15:        register struct mblock *ap, *ptr;
        !            16:        
        !            17:        if(cp == NULL || (ptr = _a_scanp) == NULL ||
        !            18:          !((ap = cp - sizeof(unsigned))->blksize))
        !            19:                return(1);      /* bullshit address */
        !            20: 
        !            21:        do {
        !            22:                if(ptr == ap)
        !            23:                        return(0);      /* obviously good */
        !            24: 
        !            25:                if(len = ptr->blksize)
        !            26:                        ptr = realsize(len) + adr(ptr);
        !            27:                else
        !            28:                        ptr = ptr->uval.next;
        !            29:        } while (ptr != _a_scanp);
        !            30: 
        !            31:        return(1);      /* not found is bad address */
        !            32: }

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