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// -------- Start of File -------- //
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// ----------------------------------------------------------- //
// C++ Source Code File Name: testprog.cpp
// Compiler Used: MSVC, BCC32, GCC, HPUX aCC, SOLARIS CC
// Produced By: glNET Software
// File Creation Date: 03/25/2000
// Date Last Modified: 05/25/2001
// Copyright (c) 2001 glNET Software
// ----------------------------------------------------------- //
// ------------- Program Description and Details ------------- //
// ----------------------------------------------------------- //
/*
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
Mutex example used to show how corruption can result if no
serialization is done.
*/
// ----------------------------------------------------------- //
#include <iostream.h>
#include "gxthread.h"
#include "gxmutex.h"
#ifdef __MSVC_DEBUG__
#include "leaktest.h"
#endif
// Constants
const int LOOPCONSTANT = 100000;
const int NUM_THREADS = 10;
// Mutex that will be shared by threads within this process
gxMutex mutex;
// Global variables
int i, j, k, l;
int uselock = 1; // TRUE if locking shared data
class SimpleThread : public gxThread
{
public:
SimpleThread() { }
~SimpleThread() { }
private: // Base class interface
void *ThreadEntryRoutine(gxThread_t *thread);
};
void *SimpleThread::ThreadEntryRoutine(gxThread_t *thread)
{
for(int loop=0; loop < LOOPCONSTANT; ++loop) {
if(uselock) { // Lock critical section if uselock is true
if(mutex.MutexLock() != 0) {
cout << mutex.MutexExceptionMessage() << endl;
return ExitThread(thread, 1);
}
}
// Shared data
++i; ++j; ++k; ++l;
if(uselock) {
if(mutex.MutexUnlock() != 0) {
cout << mutex.MutexExceptionMessage() << endl;
return ExitThread(thread, 1);
}
}
}
return 0;
}
int main()
{
#ifdef __MSVC_DEBUG__
InitLeakTest();
#endif
SimpleThread t;
gxThread_t *thread[NUM_THREADS];
int loop;
cout << "Creating " << NUM_THREADS << " threads" << endl;
for(loop = 0; loop < NUM_THREADS; ++loop)
thread[loop] = t.CreateThread();
cout << "Wait for results" << endl;
t.sSleep(10);
cout << "Show results" << endl;
cout << "Using " << NUM_THREADS << " threads and " << LOOPCONSTANT
<< " loop constant" << endl;
cout << "Values are: (should be " << (NUM_THREADS * LOOPCONSTANT)
<< ")" << endl;
cout << " ==>" << i << ' ' << j << ' ' << k << ' ' << l << endl;
cout << "Main thread completed" << endl;
// Prevent memory leaks
for(loop = 0; loop < NUM_THREADS; ++loop) delete thread[loop];
return 0;
}
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