#include <stddef.h>
#include <bits/pthreadtypes.h>
--
cond_lock offsetof (pthread_cond_t, __data.__lock)
cond_clock offsetof (pthread_cond_t, __data.__clock)
total_seq offsetof (pthread_cond_t, __data.__total_seq)
wakeup_seq offsetof (pthread_cond_t, __data.__wakeup_seq)
woken_seq offsetof (pthread_cond_t, __data.__woken_seq)