#include <stdlib.h>#ifndef _BB_THREADS_#define _BB_THREADS_void bb_threads_id_fcn(FILE *outputfile);void bb_threads_stacksize(size_t n);pid_t bb_threads_newthread(void (*fcn)(void *, size_t), void *arg);void bb_threads_shared_sighandlers(int shared);int bb_threads_cleanup(pid_t tnum);int bb_threads_mutexcreate(int n);__inline__ int bb_threads_lock(int n);__inline__ int bb_threads_sleepy_lock(int n, int usecs);__inline__ int bb_threads_unlock(int n);#endif  /* !_BB_THREADS_ */