#ifndef __EVENT_LOOP_H
#define __EVENT_LOOP_H

#include <stdint.h>
#include <stdbool.h>

#include <sys/epoll.h>
#include <unistd.h>

/*
 * Type definitions
 */
typedef void (*loop_cb_t)(int fd, uint32_t events);

/*
 * Public API
 */
// Initialize the event loop.
// Parameters:
//  - callback  - callback to use in loop_wait
// Returns:
//  - true on success
//  - false on failure
// Remarks:
//  - must be called before event loop is used
bool loop_init(loop_cb_t callback);

// Finalize the event loop.
//  - must be called on app termination
void loop_deinit();

// Set callback for file descriptor event.
// Remarks:
//  - this callback gets called in loop_wait
void loop_set_callback(loop_cb_t callback);

// Call epoll_ctl.
// Parameters:
//  - op        - op
//  - fd        - fd
//  - event     - event
// Returns:
//  - true on success
//  - false on failure
// Remarks:
//  - just calls epoll_ctl
bool loop_ctl(int op, int fd, struct epoll_event *event);

// Call epoll_wait and process the events.
// Returns:
//  - true on success
//  - false on failure
// Remarks:
//  - you should terminate the app if this function
//    fails
bool loop_wait();


#endif