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Annotation of xinu/sys/sendf.c, revision 1.1.1.1

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;
                     13: int    msg;
                     14: {
                     15:        struct  pentry  *pptr;
                     16:        PStype  ps;
                     17: 
                     18:        disable(ps);
                     19:        if (isbadpid(pid)||((pptr= &proctab[pid])->pstate == PRFREE)) {
                     20:                restore(ps);
                     21:                return(SYSERR);
                     22:        }
                     23:        pptr->pmsg = msg;
                     24:        pptr->phasmsg = TRUE;
                     25:        if (pptr->pstate == PRRECV)
                     26:                ready(pid, RESCHYES);
                     27: #ifdef RTCLOCK
                     28:        else if (pptr->pstate == PRTRECV) {
                     29:                unsleep(pid);
                     30:                ready(pid, RESCHYES);
                     31:        }
                     32: #endif
                     33:        restore(ps);
                     34:        return(OK);
                     35: }

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