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

1.1       root        1: /* sendf.c - sendf */
                      2: 
                      3: #include <conf.h>
                      4: #include <kernel.h>
                      5: #include <proc.h>
                      6: 
                      7: /*------------------------------------------------------------------------
                      8:  *  sendf  --  sendf a message to another process, forcing delivery
                      9:  *------------------------------------------------------------------------
                     10:  */
                     11: SYSCALL        sendf(pid, msg)
                     12: int    pid;
1.1.1.2 ! root       13: WORD   msg;
1.1       root       14: {
                     15:        struct  pentry  *pptr;
                     16: 
1.1.1.2 ! root       17:        disable();
1.1       root       18:        if (isbadpid(pid)||((pptr= &proctab[pid])->pstate == PRFREE)) {
1.1.1.2 ! root       19:                restore();
1.1       root       20:                return(SYSERR);
                     21:        }
                     22:        pptr->pmsg = msg;
1.1.1.2 ! root       23:        pptr->phasmsg++;
1.1       root       24:        if (pptr->pstate == PRRECV)
                     25:                ready(pid, RESCHYES);
                     26:        return(OK);
                     27: }

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