mirror of https://github.com/swaywm/sway.git
145 lines
3.2 KiB
C
145 lines
3.2 KiB
C
#define _XOPEN_SOURCE 700
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#include <stdlib.h>
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#include <stdbool.h>
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#include <string.h>
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#include <strings.h>
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#include <poll.h>
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#include <time.h>
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#include "swaybar/event_loop.h"
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#include "list.h"
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struct event_item {
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void (*cb)(int fd, short mask, void *data);
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void *data;
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};
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struct timer_item {
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timer_t timer;
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void (*cb)(timer_t timer, void *data);
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void *data;
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};
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static struct {
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// The order of each must be kept consistent
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struct { /* pollfd array */
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struct pollfd *items;
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int capacity;
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int length;
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} fds;
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list_t *items; /* event_item list */
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// Timer list
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list_t *timers;
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} event_loop;
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void add_timer(timer_t timer,
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void(*cb)(timer_t timer, void *data),
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void *data) {
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struct timer_item *item = malloc(sizeof(struct timer_item));
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item->timer = timer;
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item->cb = cb;
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item->data = data;
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list_add(event_loop.timers, item);
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}
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void add_event(int fd, short mask,
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void(*cb)(int fd, short mask, void *data), void *data) {
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struct pollfd pollfd = {
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fd,
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mask,
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0,
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};
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// Resize
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if (event_loop.fds.length == event_loop.fds.capacity) {
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event_loop.fds.capacity += 10;
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event_loop.fds.items = realloc(event_loop.fds.items,
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sizeof(struct pollfd) * event_loop.fds.capacity);
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}
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event_loop.fds.items[event_loop.fds.length++] = pollfd;
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struct event_item *item = malloc(sizeof(struct event_item));
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item->cb = cb;
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item->data = data;
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list_add(event_loop.items, item);
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return;
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}
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bool remove_event(int fd) {
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int index = -1;
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for (int i = 0; i < event_loop.fds.length; ++i) {
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if (event_loop.fds.items[i].fd == fd) {
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index = i;
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}
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}
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if (index != -1) {
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free(event_loop.items->items[index]);
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--event_loop.fds.length;
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memmove(&event_loop.fds.items[index], &event_loop.fds.items[index + 1],
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sizeof(struct pollfd) * event_loop.fds.length - index);
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list_del(event_loop.items, index);
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return true;
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} else {
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return false;
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}
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}
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static int timer_item_timer_cmp(const void *_timer_item, const void *_timer) {
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const struct timer_item *timer_item = _timer_item;
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const timer_t *timer = _timer;
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if (timer_item->timer == *timer) {
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return 0;
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} else {
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return -1;
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}
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}
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bool remove_timer(timer_t timer) {
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int index = list_seq_find(event_loop.timers, timer_item_timer_cmp, &timer);
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if (index != -1) {
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free(event_loop.timers->items[index]);
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list_del(event_loop.timers, index);
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return true;
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}
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return false;
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}
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void event_loop_poll() {
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poll(event_loop.fds.items, event_loop.fds.length, -1);
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for (int i = 0; i < event_loop.fds.length; ++i) {
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struct pollfd pfd = event_loop.fds.items[i];
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struct event_item *item = (struct event_item *)event_loop.items->items[i];
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if (pfd.revents & pfd.events) {
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item->cb(pfd.fd, pfd.revents, item->data);
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}
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}
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// check timers
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// not tested, but seems to work
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for (int i = 0; i < event_loop.timers->length; ++i) {
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struct timer_item *item = event_loop.timers->items[i];
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int overrun = timer_getoverrun(item->timer);
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if (overrun && overrun != -1) {
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item->cb(item->timer, item->data);
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}
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}
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}
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void init_event_loop() {
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event_loop.fds.length = 0;
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event_loop.fds.capacity = 10;
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event_loop.fds.items = malloc(
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event_loop.fds.capacity * sizeof(struct pollfd));
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event_loop.items = create_list();
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event_loop.timers = create_list();
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}
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