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#include "first.h"
#include "fdevent.h"
#include "buffer.h"
#include "log.h"
#include <sys/types.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#ifdef USE_LINUX_EPOLL
# include <sys/epoll.h>
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, int fde_ndx, int fd) {
struct epoll_event ep;
if (fde_ndx < 0) return -1;
memset(&ep, 0, sizeof(ep));
ep.data.fd = fd;
ep.data.ptr = NULL;
if (0 != epoll_ctl(ev->epoll_fd, EPOLL_CTL_DEL, fd, &ep)) {
log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
"epoll_ctl failed: ", strerror(errno), ", dying");
SEGFAULT();
return 0;
}
return -1;
}
static int fdevent_linux_sysepoll_event_set(fdevents *ev, int fde_ndx, int fd, int events) {
struct epoll_event ep;
int add = 0;
if (fde_ndx == -1) add = 1;
memset(&ep, 0, sizeof(ep));
ep.events = 0;
if (events & FDEVENT_IN) ep.events |= EPOLLIN;
if (events & FDEVENT_OUT) ep.events |= EPOLLOUT;
/**
*
* with EPOLLET we don't get a FDEVENT_HUP
* if the close is delay after everything has
* sent.
*
*/
ep.events |= EPOLLERR | EPOLLHUP /* | EPOLLET */;
ep.data.ptr = NULL;
ep.data.fd = fd;
if (0 != epoll_ctl(ev->epoll_fd, add ? EPOLL_CTL_ADD : EPOLL_CTL_MOD, fd, &ep)) {
log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
"epoll_ctl failed: ", strerror(errno), ", dying");
SEGFAULT();
return 0;
}
return fd;
}
static int fdevent_linux_sysepoll_poll(fdevents *ev, int timeout_ms) {
return epoll_wait(ev->epoll_fd, ev->epoll_events, ev->maxfds, timeout_ms);
}
static int fdevent_linux_sysepoll_event_get_revent(fdevents *ev, size_t ndx) {
int events = 0, e;
e = ev->epoll_events[ndx].events;
if (e & EPOLLIN) events |= FDEVENT_IN;
if (e & EPOLLOUT) events |= FDEVENT_OUT;
if (e & EPOLLERR) events |= FDEVENT_ERR;
if (e & EPOLLHUP) events |= FDEVENT_HUP;
if (e & EPOLLPRI) events |= FDEVENT_PRI;
return events;
}
static int fdevent_linux_sysepoll_event_get_fd(fdevents *ev, size_t ndx) {
# if 0
log_error_write(ev->srv, __FILE__, __LINE__, "SD, D",
"fdevent_linux_sysepoll_event_get_fd: ", (int) ndx, ev->epoll_events[ndx].data.fd);
# endif
return ev->epoll_events[ndx].data.fd;
}
static int fdevent_linux_sysepoll_event_next_fdndx(fdevents *ev, int ndx) {
size_t i;
UNUSED(ev);
i = (ndx < 0) ? 0 : ndx + 1;
return i;
}
int fdevent_linux_sysepoll_init(fdevents *ev) {
ev->type = FDEVENT_HANDLER_LINUX_SYSEPOLL;
#define SET(x) \
ev->x = fdevent_linux_sysepoll_##x;
SET(free);
SET(poll);
SET(event_del);
SET(event_set);
SET(event_next_fdndx);
SET(event_get_fd);
SET(event_get_revent);
if (-1 == (ev->epoll_fd = epoll_create(ev->maxfds))) {
log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
"epoll_create failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\"");
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;
}
#else
int fdevent_linux_sysepoll_init(fdevents *ev) {
UNUSED(ev);
log_error_write(ev->srv, __FILE__, __LINE__, "S",
"linux-sysepoll not supported, try to set server.event-handler = \"poll\" or \"select\"");
return -1;
}
#endif