// Demonstrate the use of the GThreads library
// George F. Riley, Georgia Tech, Spring 2012

// To compile, be sure that gthread.h and gthread.cc are in the same
// directory as testGThread.cc, the compile:
// g++ -o testGThread testGThread.cc gthread.cc
// To run, (for example)
// ./testGThread 16 1000 100000
// the above says 16 threads, outerloop 1000, inner loop 100000
// Feel free to experiment with various parameters
#include <iostream>
#include "gthread.h"

using namespace std;

// GThread Mutexes MUST be in global memory
gthread_mutex_t coutMutex;

void MyThreadThreeArgs(int myId, int count1, int count2)
{
  for (int i = 0; i < count1; ++i)
    {
      LockMutex(coutMutex);
      cout << "Hello from thread " << myId << " count1 " << i
           << endl;
      UnlockMutex(coutMutex);
      for (int j = 0; j < count2; ++j)
        {
        }
    }
  EndThread();  // Required by the GThreads library
}

int main(int argc, char** argv)
{
  if (argc < 4)
    {
      cout << "Usage: testGthread nThreads count1 count2" << endl;
      exit(1);
    }
  int nThreads = atol(argv[1]);
  int count1   = atol(argv[2]);
  int count2   = atol(argv[3]);
  for (int i = 0; i < nThreads; ++i)
    { // Start each thread
      CreateThread(MyThreadThreeArgs, i, count1, count2);
    }
  // Now wait for all to complete
  WaitAllThreads();
  cout << "Main exiting" << endl;
}