//passaggio di parametri a un thread
//mostra anche i context switch

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

struct char_print_parms
{
  char character;
  int count;
};

void* char_print (void* parameters)
{
  struct char_print_parms* p = (struct char_print_parms*) parameters;
  int i;

  for (i = 0; i < p->count; ++i)
    fputc (p->character, stderr);
  return NULL;
}

int main ()
{
  pthread_t thread1_id;
  pthread_t thread2_id;
  struct char_print_parms thread1_args;
  struct char_print_parms thread2_args;

  thread1_args.character = 'x';
  thread1_args.count = 10000; //stampa 10000 x
  pthread_create (&thread1_id, NULL, &char_print, &thread1_args);

  thread2_args.character = 'o';
  thread2_args.count = 10000; //stampa 10000 o
  pthread_create (&thread2_id, NULL, &char_print, &thread2_args);
  
  pthread_join (thread1_id, NULL);
  pthread_join (thread2_id, NULL);

  return 0;
}