1: # include   "monitor.h"
   2: # include   <ingres.h>
   3: # include   <aux.h>
   4: # include   <sccs.h>
   5: 
   6: SCCSID(@(#)xwait.c	8.1	12/31/84)
   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: }
Last modified: 1986-04-17
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