2.11BSD#431 - /usr/ingres/source/monitor/xwait.c

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

Defined functions