lighttpd 1.4.x https://www.lighttpd.net/
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#include "first.h"
#include "fdevent_impl.h"
#include "fdevent.h"
#include "buffer.h"
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#ifdef FDEVENT_USE_LINUX_EPOLL
# include <sys/epoll.h>
__attribute_cold__
static void fdevent_linux_sysepoll_free(fdevents *ev) {
close(ev->epoll_fd);
free(ev->epoll_events);
}
static int fdevent_linux_sysepoll_event_del(fdevents *ev, fdnode *fdn) {
return epoll_ctl(ev->epoll_fd, EPOLL_CTL_DEL, fdn->fd, NULL);
}
static int fdevent_linux_sysepoll_event_set(fdevents *ev, fdnode *fdn, int events) {
int op = (-1 == fdn->fde_ndx) ? EPOLL_CTL_ADD : EPOLL_CTL_MOD;
int fd = fdn->fde_ndx = fdn->fd;
struct epoll_event ep;
ep.events = events | EPOLLERR | EPOLLHUP;
ep.data.ptr = fdn;
return epoll_ctl(ev->epoll_fd, op, fd, &ep);
}
static int fdevent_linux_sysepoll_poll(fdevents * const ev, int timeout_ms) {
int n = epoll_wait(ev->epoll_fd, ev->epoll_events, ev->maxfds, timeout_ms);
server * const srv = ev->srv;
for (int i = 0; i < n; ++i) {
fdnode * const fdn = (fdnode *)ev->epoll_events[i].data.ptr;
int revents = ev->epoll_events[i].events;
if ((fdevent_handler)NULL != fdn->handler) {
(*fdn->handler)(srv, fdn->ctx, revents);
}
}
return n;
}
__attribute_cold__
int fdevent_linux_sysepoll_init(fdevents *ev) {
force_assert(EPOLLIN == FDEVENT_IN);
force_assert(EPOLLPRI == FDEVENT_PRI);
force_assert(EPOLLOUT == FDEVENT_OUT);
force_assert(EPOLLERR == FDEVENT_ERR);
force_assert(EPOLLHUP == FDEVENT_HUP);
#ifdef EPOLLRDHUP
force_assert(EPOLLRDHUP == FDEVENT_RDHUP);
#endif
ev->type = FDEVENT_HANDLER_LINUX_SYSEPOLL;
ev->event_set = fdevent_linux_sysepoll_event_set;
ev->event_del = fdevent_linux_sysepoll_event_del;
ev->poll = fdevent_linux_sysepoll_poll;
ev->free = fdevent_linux_sysepoll_free;
if (-1 == (ev->epoll_fd = epoll_create(ev->maxfds))) return -1;
fdevent_setfd_cloexec(ev->epoll_fd);
ev->epoll_events = malloc(ev->maxfds * sizeof(*ev->epoll_events));
force_assert(NULL != ev->epoll_events);
return 0;
}
#endif