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conditiontest.c

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00001 /* ***** BEGIN LICENSE BLOCK *****
00002  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003  *
00004  * The contents of this file are subject to the Mozilla Public License Version
00005  * 1.1 (the "License"); you may not use this file except in compliance with
00006  * the License. You may obtain a copy of the License at
00007  * http://www.mozilla.org/MPL/
00008  *
00009  * Software distributed under the License is distributed on an "AS IS" basis,
00010  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011  * for the specific language governing rights and limitations under the
00012  * License.
00013  *
00014  * The Original Code is the SysToMath C Libraries package (LibStmC).
00015  *
00016  * The Initial Developer of the Original Code is
00017  * Tom Michaelis, SysToMath.
00018  * Portions created by the Initial Developer are Copyright (C) 1994-2006
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *
00023  * Alternatively, the contents of this file may be used under the terms of
00024  * either the GNU General Public License Version 2 or later (the "GPL"), or
00025  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00026  * in which case the provisions of the GPL or the LGPL are applicable instead
00027  * of those above. If you wish to allow use of your version of this file only
00028  * under the terms of either the GPL or the LGPL, and not to allow others to
00029  * use your version of this file under the terms of the MPL, indicate your
00030  * decision by deleting the provisions above and replace them with the notice
00031  * and other provisions required by the GPL or the LGPL. If you do not delete
00032  * the provisions above, a recipient may use your version of this file under
00033  * the terms of any one of the MPL, the GPL or the LGPL.
00034  *
00035  * ***** END LICENSE BLOCK ***** */
00036 
00037 /******************************************************************************
00038  *                       First Release 1994-07-20
00039  ******************************************************************************/
00040 
00041 
00069 #include <stdio.h>
00070 #include <string.h>
00071 #include <errno.h>
00072 #include <stm/system.h>
00073 
00076 static StmMutex mutex;
00077 
00080 static StmCondition cond;
00081 
00084 static int counter;
00085 
00088 static void *handler (void *data)
00089 {
00090     int id = * (int *) data;
00091     stmMutexLock (mutex);
00092     while (counter < 20)
00093     {
00094         switch (stmConditionTimedWait (cond, mutex, stmGetMsTime () + 10))
00095         {
00096         case 0:
00097             if (counter < 20)
00098             {
00099                 ++ counter;
00100                 printf ("thread%d: Counter value: %d\n", id, counter);
00101             }
00102             break;
00103         case 1:
00104             break;
00105         default:
00106             counter = 20;
00107             printf ("thread%d: Error: %s: aborted\n", id, strerror (errno));
00108             break;
00109         }
00110     }
00111     stmMutexUnlock (mutex);
00112     return NULL;
00113 }
00114 
00118 int main ()
00119 {
00120     static int id [] = {1, 2};
00121     mutex = stmMutexCreate (StmFalse);
00122     cond = stmConditionCreate ();
00123     {
00124         StmThread thread1 = stmThreadCreate (handler, id + 0);
00125         StmThread thread2 = stmThreadCreate (handler, id + 1);
00126         while (counter < 20)
00127         {
00128             stmMutexLock (mutex);
00129             stmConditionBroadcast (cond);
00130             stmMutexUnlock (mutex);
00131         }
00132         stmThreadJoin (thread1, NULL);
00133         stmThreadJoin (thread2, NULL);
00134         stmThreadDestroy (thread1);
00135         stmThreadDestroy (thread2);
00136     }
00137     stmConditionDestroy (cond);
00138     stmMutexDestroy (mutex);
00139     return 0;
00140 }
00141 
00142 

© Copyright Tom Michaelis 2002-2007

Distributed under the SysToMath Software License (See the accompanying file license.txt or a copy at www.SysToMath.com).