//
// thread_1.c
//
// pthread_create() - create a thread
// pthread_join()   - wait for termination of another thread
//

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>

#define MAX_NUM 100  // maximum number of threads

int sum = 0;

pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;

//
// The thread start routine
//
void* f(void* a)
{
  int k = *(int*)a;

  srand(time(NULL));
  int n = rand() % 10;

while(sum <1000) {
  pthread_mutex_lock(&mtx);
  sum += n;
if (sum >1000) {
	printf("Thread-ul %d a realizat trecerea",k);
}
  pthread_mutex_unlock(&mtx);
}

  return NULL;
}



int main(int argc, char* argv[])
{
  pthread_t t[MAX_NUM];                 // an array of threads

int index[5];
for (int k = 0; k<5; k++) {
	index[k] = k;
}
  int i;
  for (i = 0; i < MAX_NUM; i++)
  {
    pthread_create(&t[i], NULL, f, &index[i]); // create a thread
  }

  for (i = 0; i < MAX_NUM; i++)
  {
    pthread_join(t[i], NULL);           // wait for each thread to finish
  }


  return 0;
}