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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: 07/23/2001
// 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
 
Simple test program demonstrating the basic operation of the
gxThread class using condition variables.
*/
// ----------------------------------------------------------- //   
#include <iostream.h>
#include "gxthread.h"
#include "gxcond.h"
#include "gxmutex.h"

#ifdef __MSVC_DEBUG__
#include "leaktest.h"
#endif

// For safe condition variable usage, must use a boolean predicate and 
// a mutex with the condition.
int conditionMet = 0;
gxCondition cond;
gxMutex mutex;

class SimpleThread : public gxThread
{
private: // Base class interface
  void *ThreadEntryRoutine(gxThread_t *thread);
};

void *SimpleThread::ThreadEntryRoutine(gxThread_t *thread)
// Thread's entry function
{
  mutex.MutexLock();
  
  while (!conditionMet) {
    cout << "Thread blocked" << "\n";
    cond.ConditionWait(&mutex);
  }

  mutex.MutexUnlock();

  return 0;
}

int main(int argc, char **argv)
{
#ifdef __MSVC_DEBUG__
  InitLeakTest();
#endif

  const int NUM_THREADS = 5;
  SimpleThread t;
  gxThread_t *thread[NUM_THREADS];

  cout << "Create " << NUM_THREADS << " threads" << "\n";
  int i;
  for(i = 0; i < NUM_THREADS; i++) thread[i] = t.CreateThread(); 

  t.sSleep(1); // Serialize the threads 
  mutex.MutexLock();
  
  // The condition has occured. Set the flag and wake up any waiters
  conditionMet = 1;
  cout << "Wake up all waiters..." << "\n";
  cond.ConditionBroadcast();
  
  mutex.MutexUnlock();

  
  cout << "Wait for threads before exiting" << "\n";
  for(i = 0; i < NUM_THREADS; ++i) t.JoinThread(thread[i]);


  // Release the memory allocated for each thread
  for(i = 0; i < NUM_THREADS; ++i) delete thread[i];
  return 0;
}
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