sasl_mutex_alloc_t
LIBSASL_API void sasl_set_mutex(sasl_mutex_alloc_t *, sasl_mutex_lock_t *,
sasl_mutex_alloc_t *mutex_alloc;
void sasl_set_mutex(sasl_mutex_alloc_t *n, sasl_mutex_lock_t *l,
sasl_mutex_alloc_t *alloc;