myvtm/Framework/libtoolkit/unix/evtpoll.h

#ifndef _TOOLKIT_EVENT_POLL_H_
#define _TOOLKIT_EVENT_POLL_H_

#ifndef _WIN32

#include "config.h"
#include <sys/epoll.h>

/*
edge-triggered(ET): use this flag, the app should use nonblock fd
level-triggered(LT): default
*/

#define MAX_EPOLL_EVENT 1024

/*event mask*/
#define EV_READ			EPOLLIN
#define EV_ACCEPT		EPOLLIN
#define EV_WRITE		EPOLLOUT
/*to disable the associated fd after the receipt of an event*/
#define EV_READ_ONCE (EPOLLIN | EPOLLONESHOT)
#define EV_WRITE_ONCE (EPOLLOUT | EPOLLONESHOT)
#define EV_READ_WRITE_WITH_LT_FULL (EPOLLOUT | EPOLLIN | EPOLLERR | EPOLLHUP)
#define EV_READ_WRITE_WITH_LT_PURE (EPOLLOUT | EPOLLIN)

#define DEFAULT_INTEREST_OP_COUNT		3
#define EV_INTEREST_ENTRY_IN_IDX             0
#define EV_INTEREST_ENTRY_OUT_IDX          1
#define EV_INTEREST_ENTRY_ERR_IDX           2

#define EV_BUS_ENDPOINT (((uint32_t)(1)) << 16)

#ifdef __cplusplus
extern "C" {
#endif

	struct event_epoll_data_s;
	struct event_epoll_s;

	typedef void(*evtpoll_data_cb)(struct event_epoll_s* ep,
		struct event_epoll_data_s* d,
		unsigned int events);

	typedef struct event_epoll_data_s event_epoll_data_t;
	typedef struct event_epoll_s evtpoll_t;

	event_epoll_data_t* evtpoll_data_new();

	TOOLKIT_API	void evtpoll_data_destroy(event_epoll_data_t* epoll_data);

	TOOLKIT_API int evtpoll_data_set(event_epoll_data_t* epoll_data, int type, int fd, void* data);

	TOOLKIT_API int evtpoll_data_get_fd(const event_epoll_data_t* const epoll_data);

	TOOLKIT_API int evtpoll_data_get_type(const event_epoll_data_t* const epoll_data);

	TOOLKIT_API void evtpoll_data_set_data(event_epoll_data_t* epoll_data, void* data);

	TOOLKIT_API void* evtpoll_data_get_data(const event_epoll_data_t* const epoll_data);

	TOOLKIT_API evtpoll_t* evtpoll_create();

	TOOLKIT_API void evtpoll_destroy(evtpoll_t* evt_poll);

	TOOLKIT_API int evtpoll_get_epoll_fd(const evtpoll_t* const evt_poll);

	/** this function would remove the epoll mask at event*/
	TOOLKIT_API int evtpoll_deal(evtpoll_t* ep, struct epoll_event* event, void** data, int cancel);

	TOOLKIT_API int evtpoll_wait(evtpoll_t* ep, struct epoll_event event_array[], int event_array_size, int timeout);
	
	TOOLKIT_API int evtpoll_attach(evtpoll_t* ep, int interest_fd);

	TOOLKIT_API void evtpoll_detach(evtpoll_t* ep, int interest_fd);

	TOOLKIT_API int evtpoll_subscribe(evtpoll_t* ep, int event_mask, int fd, void* rdata, void* wdata);

	TOOLKIT_API int evtpoll_unsubscribe(evtpoll_t* ep, int event_mask, int fd, int only_reset, void** rdata, void** wdata);

	TOOLKIT_API int evtpoll_loop(evtpoll_t* ep, int timeout);

#ifdef __cplusplus
} // extern "C" {
#endif


#endif //NOT _WIN32

#endif //_TOOLKIT_EVENT_POLL_H_