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Annotation of 42BSD/ingres/source/monitor/xwait.c, revision 1.1.1.1

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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