73 lines
4.8 KiB
Rexx
Executable File
73 lines
4.8 KiB
Rexx
Executable File
#!@OOREXX_SHEBANG_PROGRAM@
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/*----------------------------------------------------------------------------*/
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/* */
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/* Copyright (c) 1995, 2004 IBM Corporation. All rights reserved. */
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/* Copyright (c) 2005-2014 Rexx Language Association. All rights reserved. */
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/* */
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/* This program and the accompanying materials are made available under */
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/* the terms of the Common Public License v1.0 which accompanies this */
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/* distribution. A copy is also available at the following address: */
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/* https://www.oorexx.org/license.html */
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/* */
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/* Redistribution and use in source and binary forms, with or */
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/* without modification, are permitted provided that the following */
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/* conditions are met: */
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/* */
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/* Redistributions of source code must retain the above copyright */
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/* notice, this list of conditions and the following disclaimer. */
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/* Redistributions in binary form must reproduce the above copyright */
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/* notice, this list of conditions and the following disclaimer in */
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/* the documentation and/or other materials provided with the distribution. */
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/* */
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/* Neither the name of Rexx Language Association nor the names */
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/* of its contributors may be used to endorse or promote products */
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/* derived from this software without specific prior written permission. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */
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/* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */
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/* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS */
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/* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */
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/* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */
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/* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED */
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/* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, */
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/* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY */
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/* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING */
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/* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
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/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/*----------------------------------------------------------------------------*/
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/******************************************************************************/
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/* ktguard.rex Open Object Rexx Samples */
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/* */
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/* */
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/* -------------------------------------------------------------------------- */
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/* */
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/* Description: */
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/* A guard instruction example. */
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/* */
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/* This program demonstrates the use of the start method and the guard */
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/* instruction to control execution of several programs. In this sample, */
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/* the programs are controlled by one 'guarded' variable. */
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/******************************************************************************/
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/* Define sample class and add methods we will use */
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sample = .object~subclass('Sample')
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m1 = 'expose g; guard off when g; use arg text; say text'
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sample~define('WAIT_ON', m1)
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m2 = 'expose g; use arg g'
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sample~define('SETGUARD', m2)
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/* Start up 10 invocations of WAIT_ON */
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a = sample~new~~setguard(0) /* g is false so programs will */
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/* wait on guard instruction */
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do i = 1 to 10
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say 'Start invocation' right(i,2) '(and wait)'
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a~start('WAIT_ON', ' Invocation' right(i,2) 'completing')
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end
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/* Now let them all run */
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say 'Press enter to set guard expression true...'
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parse pull .
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a~setguard(1) /* Setting g to 1 allows programs */
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/* to run. */
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