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Annotation of xinu/sys/mkpool.c, revision 1.1.1.2

1.1       root        1: /* mkpool.c - mkpool */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <mark.h>
                      6: #include <bufpool.h>
                      7: 
                      8: /*------------------------------------------------------------------------
                      9:  *  mkpool  --  allocate memory for a buffer pool and link together
                     10:  *------------------------------------------------------------------------
                     11:  */
1.1.1.2 ! root       12: mkpool(bufsiz, numbufs)
1.1       root       13: int    bufsiz, numbufs;
                     14: {
                     15:        int     poolid;
                     16:        char    *where;
                     17: 
1.1.1.2 ! root       18: #ifdef DEBUG
        !            19:        dotrace("mkpool", &bufsiz, 2);
        !            20: #endif
1.1       root       21: #ifdef MEMMARK
                     22:        if ( unmarked(bpmark) )
                     23:                poolinit();
                     24: #endif
1.1.1.2 ! root       25:        disable();
1.1       root       26:        if (bufsiz<BPMINB || bufsiz>BPMAXB
                     27:            || numbufs<1 || numbufs>BPMAXN
                     28:            || nbpools >= NBPOOLS
1.1.1.2 ! root       29:            || (where=getmem((bufsiz+sizeof(int))*numbufs)) == SYSERR) {
        !            30:                restore();
1.1       root       31:                return(SYSERR);
                     32:        }
                     33:        poolid = nbpools++;
                     34:        bptab[poolid].bpnext = where;
                     35:        bptab[poolid].bpsize = bufsiz;
                     36:        bptab[poolid].bpsem = screate(numbufs);
                     37:        bufsiz+=sizeof(int);
                     38:        for (numbufs-- ; numbufs>0 ; numbufs--,where+=bufsiz)
                     39:                *( (int *) where ) = (int)(where+bufsiz);
                     40:        *( (int *) where) = (int) NULL;
1.1.1.2 ! root       41:        restore();
1.1       root       42:        return(poolid);
                     43: }

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