#ifndef _SYS_EVENTFD_H
#define _SYS_EVENTFD_H 1
#include <sys/cdefs.h>
__BEGIN_DECLS
#define EFD_CLOEXEC 0x1
#define EFD_NONBLOCK 0x2
#define EFD_SEMAPHORE 0x4
int eventfd(unsigned int initval, int flags);
__END_DECLS
#endif