Epo2.6 kernel Epoll usage example

Example of epo2.6 kernel Epoll usage-Linux general technology-Linux programming and kernel information. The following is a detailed description. All functions used by epoll are declared in the sys/epoll. h header file. The following briefly describes the data structures and functions used:

The data structure used:

CODE: typedef union epoll_data { Void * ptr; Int fd; _ Uint32_t u32; _ Uint64_t u64; } Epoll_data_t; Struct epoll_event { _ Uint32_t events;/* Epoll events */ Epoll_data_t data;/* User data variable */ };