    // ------------------------------- //
    // -------- Start of File -------- //
    // ------------------------------- //
    // ----------------------------------------------------------- //
    // C++ Source Code File Name: testprog.cpp
    // Compiler Used: MSVC, BCC32, GCC, HPUX aCC, SOLARIS CC
    // Produced By: DataReel Software Development Team
    // File Creation Date: 03/25/2000
    // Date Last Modified: 06/17/2016
    // Copyright (c) 2001-2025 DataReel Software Development
    // ----------------------------------------------------------- //
    // ------------- 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

    Test program demonstrating how to create thread-specific data.
    */
    // ----------------------------------------------------------- //
    #include "gxdlcode.h"

    #if defined (__USE_ANSI_CPP__) // Use the ANSI Standard C++ library
    #include <iostream>
    using namespace std; // Use unqualified names for Standard C++ library
    #else // Use the old iostream library by default
    #include <iostream.h>
    #endif // __USE_ANSI_CPP__

    #include "gxthread.h"

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

    // Constants
    const int NUM_THREADS = 2;

    // Thread specific data used in this process
    struct threadSpecific_data_t
    {
      threadSpecific_data_t(int i, int j) {
        threadSpecific1 = i; threadSpecific2 = j;
      }

      int threadSpecific1;
      int threadSpecific2;
    };

    // Thread key
    gxThreadKey threadSpecificKey;

    class SimpleThread : public gxThread
    {
    public:
      SimpleThread () { oid = 1; }

    private: // Base class interface
      void *ThreadEntryRoutine(gxThread_t *thread);
      void ThreadExitRoutine(gxThread_t *thread);

    private: // Functions that use the threadSpecific data
      void foo(gxThread_t *thread);
      void bar(gxThread_t *thread);

    private:
      gxThreadObjectID oid;
    };

    void *SimpleThread::ThreadEntryRoutine(gxThread_t *thread)
    // Thread's entry function
    {
      thread->SetObjectID(oid++);
      cout << "Entering thread: " << thread->GetObjectID() << "\n" << flush;

      threadSpecific_data_t *gData = \
        (threadSpecific_data_t *)thread->GetThreadParm();

      if(ThreadSetSpecific(threadSpecificKey, gData) != 0) {
        cout << "Thread local storage error" << "\n" << flush;
        return ExitThread(thread, 1);
      }

      foo(thread);
      return 0;
    }

    void SimpleThread::foo(gxThread_t *thread)
    {
      threadSpecific_data_t *gData = \
        (threadSpecific_data_t *)ThreadGetSpecific(threadSpecificKey);

      cout << "Thread: " << thread->GetObjectID() << " entering foo(), ";
      cout << "threadSpecific data = " << gData->threadSpecific1 << ' '
           << gData->threadSpecific2
           << "\n" << flush;

      bar(thread);
    }

    void SimpleThread::bar(gxThread_t *thread)
    {
      threadSpecific_data_t *gData = \
        (threadSpecific_data_t *)ThreadGetSpecific(threadSpecificKey);

      cout << "Thread: " << thread->GetObjectID() << " entering bar(), ";
      cout << "threadSpecific data = " << gData->threadSpecific1 << ' '
           << gData->threadSpecific2
           << "\n" << flush;
    }

    void SimpleThread::ThreadExitRoutine(gxThread_t *thread)
    {
      cout << "Thread: " << thread->GetObjectID() << " exiting" << "\n" << flush;

      void *parm = thread->GetThreadParm();

      // Free the local storage resources
      delete parm;
    }

    int main()
    {
    #ifdef __MSVC_DEBUG__
      InitLeakTest();
    #endif

      SimpleThread t;
      gxThread_t *thread[NUM_THREADS];

      if(t.ThreadKeyCreate(threadSpecificKey) != 0) {
        cout << "Thread local storage error!" << "\n" << flush;
        cout << "Could not obtain and index." << "\n" << flush;
        return 1;
      }

      cout << "Creating " << NUM_THREADS << " threads" << "\n" << flush;
      int i;
      for(i = 0; i < NUM_THREADS; i++) {
        // Create per-thread threadSpecific data and pass it to the thread
        threadSpecific_data_t *gData = new threadSpecific_data_t(i, ((i+1)*2));
        thread[i] = t.CreateThread((void *)gData);
        t.sSleep(1); // Allow the thread to print their messages in order
      }

      cout << "Wait for the threads to complete, and release their resources"
           << "\n" << flush;
      for(i = 0; i < NUM_THREADS; i++) t.JoinThread(thread[i]);

      // Release the index
      t.ThreadKeyDelete(threadSpecificKey);

      // Prevent memory leaks
      for(i = 0; i < NUM_THREADS; i++) delete thread[i];
      return 0;
    }
    // ----------------------------------------------------------- //
    // ------------------------------- //
    // --------- End of File --------- //
    // ------------------------------- //