#include <limits.h>
#include <process.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <terminal.h>

#define MUTEX 2000

__thread volatile char letter = 'c';

void app_proc (void) {
  char arg_letter = (char)(uintptr_t)process_argument ();

  letter = arg_letter;

  for (;;) {
    mutex_lock (MUTEX);

    for (int i = 0; i < 3; i++)
      terminal_print (&letter, 1);

    for (volatile int i = 0; i < 1000*1000; i++)
      ;

    mutex_unlock (MUTEX);
  }

  process_quit ();
}

void app_main (void) {
  mutex_create (MUTEX);

  letter = 'a';

  process_spawn (&app_proc, (void*)'b');
  process_spawn (&app_proc, (void*)'c');
  process_spawn (&app_proc, (void*)'d');

  for (;;) {
    mutex_lock (MUTEX);

    for (int i = 0; i < 3; i++)
      terminal_print (&letter, 1);
    
    for (volatile int i = 0; i < 1000*1000; i++)
      ;

    mutex_unlock (MUTEX);
  }
}