#ifndef SMART_POINTERS_H
#define SMART_POINTERS_H

#include <pthread.h>

struct smart_pointer {
  pthread_mutex_t mutex;
  unsigned nb_ptr; // number of active pointers
  size_t buffer_size; // size of the buffer
  void* ptr; // address of the buffer
};

/* Initialize a smart pointer */
void init_smart_malloc(struct smart_pointer *sm_ptr, size_t buffer_size);

/* create a new active pointer */
void* new_pointer(struct smart_pointer *sm_ptr);

/* decrement the number of active pointers, and free the buffer if there are
 * no more active pointers
 */
void smart_pointer_free(struct smart_pointer *sm_ptr);

#endif	/* SMART_POINTERS_H */