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Annotation of 42BSD/ingres/source/monitor/xwait.c, revision 1.1

1.1     ! root        1: # include      "monitor.h"
        !             2: # include      <ingres.h>
        !             3: # include      <aux.h>
        !             4: # include      <sccs.h>
        !             5: 
        !             6: SCCSID(@(#)xwait.c     7.1     2/5/81)
        !             7: 
        !             8: 
        !             9: 
        !            10: /*
        !            11: **  WAIT FOR PROCESS TO DIE
        !            12: **
        !            13: **     Used in edit() and shell() to terminate the subprocess.
        !            14: **     Waits on pid "Xwaitpid".  If this is zero, xwait() returns
        !            15: **     immediately.
        !            16: **
        !            17: **     This is called by "catchsig()" so as to properly terminate
        !            18: **     on a rubout while in one of the subsystems.
        !            19: **
        !            20: **     Trace Flags:
        !            21: **             41
        !            22: */
        !            23: 
        !            24: xwait()
        !            25: {
        !            26:        int             status;
        !            27:        register int    i;
        !            28:        register char   c;
        !            29: 
        !            30: #      ifdef xMTR2
        !            31:        if (tTf(41, 0))
        !            32:                printf("xwait: [%d]\n", Xwaitpid);
        !            33: #      endif
        !            34:        if (Xwaitpid == 0)
        !            35:        {
        !            36:                cgprompt();
        !            37:                return;
        !            38:        }
        !            39:        while ((i = wait(&status)) != -1)
        !            40:        {
        !            41: #              ifdef xMTR2
        !            42:                if (tTf(41, 1))
        !            43:                        printf("pid %d stat %d\n", i, status);
        !            44: #              endif
        !            45:                if (i == Xwaitpid)
        !            46:                        break;
        !            47:        }
        !            48: 
        !            49:        Xwaitpid = 0;
        !            50: 
        !            51:        /* reopen query buffer */
        !            52:        if ((Qryiop = fopen(Qbname, "a")) == NULL)
        !            53:                syserr("xwait: open %s", Qbname);
        !            54:        Notnull = 1;
        !            55: 
        !            56:        cgprompt();
        !            57: }

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