// run a function in parallel N times, wait using pthread_join()
//
// run time is maximum of the run times for each function call
//
#include <pthread.h>

#include "common.c"

 // start the threads
 //
  pthread_t t[N];

  for( int i = 0; i < N; ++i)
    if( pthread_create( &t[i], 0, f, &D[i].i ) ) { perror( "pthread_create"); return 1; }

 // wait until all threads are finished
 //
  for( int i = 0; i < N; ++i) pthread_join( t[i], 0);
}