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#include <stdlib.h>
#include <sys/epoll.h>
#include "eventloop.h"
#include "util.h"
#include "constant.h"
struct eventLoop *eventLoopNew()
{
int epollfd = epoll_create1(0);
if (epollfd == -1)
return NULL;
struct eventLoop *eventLoop = malloc(sizeof(*eventLoop));
eventLoop->epollfd = epollfd;
eventLoop->size = EVENT_LOOP_MAX_EVENTS;
return eventLoop;
}
int eventLoopWait(struct eventLoop *el, int timeout)
{
return epoll_wait(el->epollfd, el->events, el->size, timeout);
}
struct tsocket *eventLoopGetSocket(struct eventLoop *el, int index)
{
return (struct tsocket *)el->events[index].data.ptr;
}
int eventLoopAdd(struct eventLoop *el, struct event *ev, int flag)
{
struct epoll_event epev;
epev.events = flag;
epev.data.ptr = ev;
return epoll_ctl(el->epollfd, EPOLL_CTL_ADD, ev->fd, &epev);
}
struct event *eventLoopGet(struct eventLoop *el, int index)
{
return (struct event *)el->events[index].data.ptr;
}
void eventLoopLoop(struct eventLoop *el)
{
int nevents;
struct event *ev;
for (;;) {
nevents = eventLoopWait(el, -1);
if (nevents == -1)
panic("eventloop wait");
for (int i = 0; i < nevents; i++) {
ev = eventLoopGet(el, i);
if (ev->handle(ev->data) == -1)
eventLoopDel(el, ev);
}
}
}
int eventLoopDel(struct eventLoop *el, struct event *ev)
{
if (epoll_ctl(el->epollfd, EPOLL_CTL_DEL, ev->fd, NULL) == -1)
return ERROR;
if (ev->delete)
ev->delete(ev->data);
free(ev);
return OK;
}
struct event *eventNew(void *data, int fd, void (*handle), void (*delete))
{
struct event *ev = malloc(sizeof(*ev));
ev->data = data;
ev->handle = handle;
ev->fd = fd;
ev->delete = delete;
return ev;
}
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