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

1.1       root        1: /* pinit.c - pinit */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <mark.h>
                      6: #include <ports.h>
                      7: 
                      8: #ifdef MEMMARK
                      9: MARKER ptmark;
                     10: #endif
                     11: struct ptnode  *ptfree;                /* list of free queue nodes     */
                     12: struct pt      ports[NPORTS];
                     13: int    ptnextp;
                     14: 
                     15: /*------------------------------------------------------------------------
                     16:  *  pinit  --  initialize all ports
                     17:  *------------------------------------------------------------------------
                     18:  */
                     19: SYSCALL        pinit(maxmsgs)
                     20: int maxmsgs;
                     21: {
                     22:        int     i;
                     23:        struct  ptnode  *next, *prev;
                     24: 
1.1.1.2 ! root       25: #ifdef DEBUG
        !            26:        dotrace("pinit", &maxmsgs, 1);
        !            27: #endif
        !            28:        if ( (ptfree=getmem(maxmsgs*sizeof(struct ptnode)))==SYSERR ) {
        !            29:                kprintf("pinit - insufficient memory");
        !            30:                return SYSERR;
1.1       root       31:        }
1.1.1.2 ! root       32:        for (i=0 ; i<NPORTS ; i++)
        !            33:                ports[i].ptstate = PTFREE;
1.1       root       34:        ptnextp = NPORTS - 1;
                     35: 
                     36:        /* link up free list of message pointer nodes */
                     37: 
                     38:        for ( prev=next=ptfree ;  --maxmsgs > 0  ; prev=next )
                     39:                prev->ptnext = ++next;
                     40:        prev->ptnext = (struct ptnode *)NULL;
                     41:        return(OK);
                     42: }

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