/*********************************************************************
* Copyright (C) 2000 by Progress Software Corporation ("PSC"),       *
* 14 Oak Park, Bedford, MA 01730, and other contributors as listed   *
* below.  All Rights Reserved.                                       *
*                                                                    *
* The Initial Developer of the Original Code is PSC.  The Original   *
* Code is Progress IDE code released to open source December 1, 2000.*
*                                                                    *
* The contents of this file are subject to the Possenet Public       *
* License Version 1.0 (the "License"); you may not use this file     *
* except in compliance with the License.  A copy of the License is   *
* available as of the date of this notice at                         *
* http://www.possenet.org/license.html                               *
*                                                                    *
* Software distributed under the License is distributed on an "AS IS"*
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. You*
* should refer to the License for the specific language governing    *
* rights and limitations under the License.                          *
*                                                                    *
* Contributors:                                                      *
*                                                                    *
*********************************************************************/
/*----------------------------------------------------------------------------

File: _shutdwn.p

Description:
    Shuts down the workshop and cleans up the various persistent objects.
   
Input Parameters:
  <none>

Output Parameters:
  <none>

Author: Wm.T.Wood

Date Created: January 1997

Modified:
 --------------------------------------------------------------------------*/

{ workshop/sharvars.i }    /* Most common shared variables        */
{ workshop/errors.i }      /* Error handling procedures           */

DEFINE VARIABLE h      AS HANDLE NO-UNDO.
DEFINE VARIABLE h_next AS HANDLE NO-UNDO.
/* =====================================================================  */
/*            Shutdown environment and empty some globals                 */
/* =====================================================================  */

/* Stop the error handler, if necessary. Also stop any old copies that are
   accidently lying around. */
IF VALID-HANDLE(_err-hdl) THEN DO:
  /* Loop through all the persistent procedures and delete anything that
     looks like the _err-hdl procedure. */
  h = SESSION:FIRST-PROCEDURE.
  DO WHILE VALID-HANDLE(h):
    /* Store the next procedure before the current one is deleted. */
    h_next = h:NEXT-SIBLING.
    IF h ne _err-hdl AND h:FILE-NAME eq _err-hdl:FILE-NAME
    THEN DELETE PROCEDURE h.
    /* Go to the next procedure. */
    h = h_next.
  END. /* DO WHILE VALID-HANDLE(h)... */ 
  /* Now delete the error handler itself. */
  DELETE PROCEDURE _err-hdl.
END.