typedef DWORD xbt_os_thread_key_t;
#else /* assume that every non-windows system is POSIX-compatible */
typedef pthread_key_t xbt_os_thread_key_t;
typedef DWORD xbt_os_thread_key_t;
#else /* assume that every non-windows system is POSIX-compatible */
typedef pthread_key_t xbt_os_thread_key_t;