1 #ifndef _SYS_EVENTFD_H 2 #define _SYS_EVENTFD_H 3 4 #ifdef __cplusplus 5 extern "C" { 6 #endif 7 8 #include <stdint.h> 9 #include <fcntl.h> 10 11 typedef uint64_t eventfd_t; 12 13 #define EFD_SEMAPHORE 1 14 #define EFD_CLOEXEC O_CLOEXEC 15 #define EFD_NONBLOCK O_NONBLOCK 16 17 int eventfd(unsigned int, int); 18 int eventfd_read(int, eventfd_t *); 19 int eventfd_write(int, eventfd_t); 20 21 22 #ifdef __cplusplus 23 } 24 #endif 25 26 #endif /* sys/eventfd.h */ 27