1#ifndef _SYS_EVENTFD_H
 2#define _SYS_EVENTFD_H
 3
 4#ifdef __cplusplus
 5extern "C" {
 6#endif
 7
 8#include <stdint.h>
 9#include <fcntl.h>
10
11typedef uint64_t eventfd_t;
12
13#define EFD_SEMAPHORE 1
14#define EFD_CLOEXEC O_CLOEXEC
15#define EFD_NONBLOCK O_NONBLOCK
16
17int eventfd(unsigned int, int);
18int eventfd_read(int, eventfd_t *);
19int eventfd_write(int, eventfd_t);
20
21
22#ifdef __cplusplus
23}
24#endif
25
26#endif /* sys/eventfd.h */