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convince/include/loop.h

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Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
#ifndef _SWAY_LOOP_H
#define _SWAY_LOOP_H
#include <stdbool.h>
/**
* This is an event loop system designed for sway clients, not sway itself.
*
Remove timerfd from loop implementation timerfd doesn't work on the BSDs, so this replaces it with a timespec for the expiry and uses a poll timeout to check the timers when needed.
6 years ago
* The loop consists of file descriptors and timers. Typically the Wayland
* display's file descriptor will be one of the fds in the loop.
Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
*/
struct loop;
Remove timerfd from loop implementation timerfd doesn't work on the BSDs, so this replaces it with a timespec for the expiry and uses a poll timeout to check the timers when needed.
6 years ago
struct loop_timer;
Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
/**
* Create an event loop.
*/
struct loop *loop_create(void);
/**
* Destroy the event loop (eg. on program termination).
*/
void loop_destroy(struct loop *loop);
/**
* Poll the event loop. This will block until one of the fds has data.
*/
void loop_poll(struct loop *loop);
/**
Remove timerfd from loop implementation timerfd doesn't work on the BSDs, so this replaces it with a timespec for the expiry and uses a poll timeout to check the timers when needed.
6 years ago
* Add a file descriptor to the loop.
Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
*/
Remove timerfd from loop implementation timerfd doesn't work on the BSDs, so this replaces it with a timespec for the expiry and uses a poll timeout to check the timers when needed.
6 years ago
void loop_add_fd(struct loop *loop, int fd, short mask,
Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
void (*func)(int fd, short mask, void *data), void *data);
/**
* Add a timer to the loop.
Remove timerfd from loop implementation timerfd doesn't work on the BSDs, so this replaces it with a timespec for the expiry and uses a poll timeout to check the timers when needed.
6 years ago
*
* When the timer expires, the timer will be removed from the loop and freed.
*/
struct loop_timer *loop_add_timer(struct loop *loop, int ms,
void (*callback)(void *data), void *data);
/**
* Remove a file descriptor from the loop.
Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
*/
Remove timerfd from loop implementation timerfd doesn't work on the BSDs, so this replaces it with a timespec for the expiry and uses a poll timeout to check the timers when needed.
6 years ago
bool loop_remove_fd(struct loop *loop, int fd);
Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
/**
Remove timerfd from loop implementation timerfd doesn't work on the BSDs, so this replaces it with a timespec for the expiry and uses a poll timeout to check the timers when needed.
6 years ago
* Remove a timer from the loop.
Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
*/
Remove timerfd from loop implementation timerfd doesn't work on the BSDs, so this replaces it with a timespec for the expiry and uses a poll timeout to check the timers when needed.
6 years ago
bool loop_remove_timer(struct loop *loop, struct loop_timer *timer);
Move swaybar's event loop to common directory and refactor * The loop functions are now prefixed with `loop_`. * It is now easy to add timers to the loop. * Timers are implemented using pollfd and timerfd, rather than manually checking them when any other event happens to arrive.
6 years ago
#endif