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#include "fdevent.h"
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#include "buffer.h"
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#include "log.h"
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#include <sys/types.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.h>
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#include <signal.h>
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#include <fcntl.h>
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#ifdef USE_FREEBSD_KQUEUE
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# include <sys/event.h>
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# include <sys/time.h>
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static void fdevent_freebsd_kqueue_free(fdevents *ev) {
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close(ev->kq_fd);
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free(ev->kq_results);
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}
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static int fdevent_freebsd_kqueue_event_del(fdevents *ev, int fde_ndx, int fd) {
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int ret, n = 0;
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struct kevent kev[2];
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struct timespec ts;
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int oevents;
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if (fde_ndx < 0) return -1;
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oevents = ev->fdarray[fd]->events;
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if (oevents & FDEVENT_IN) {
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EV_SET(&kev[n], fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
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n++;
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}
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if (oevents & FDEVENT_OUT) {
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EV_SET(&kev[n], fd, EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
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n++;
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}
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if (0 == n) return -1;
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ts.tv_sec = 0;
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ts.tv_nsec = 0;
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ret = kevent(ev->kq_fd,
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&kev, n,
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NULL, 0,
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&ts);
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if (ret == -1) {
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log_error_write(ev->srv, __FILE__, __LINE__, "SS",
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"kqueue event delete failed: ", strerror(errno));
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return -1;
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}
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return -1;
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}
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static int fdevent_freebsd_kqueue_event_set(fdevents *ev, int fde_ndx, int fd, int events) {
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int ret, n = 0;
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struct kevent kev[2];
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struct timespec ts;
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int oevents = ev->fdarray[fd]->events;
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int addevents = events & ~oevents;
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int delevents = ~events & oevents;
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UNUSED(fde_ndx);
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if (events == oevents) return fd;
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if (addevents & FDEVENT_IN) {
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EV_SET(&kev[n], fd, EVFILT_READ, EV_ADD|EV_CLEAR, 0, 0, NULL);
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n++;
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} else if (delevents & FDEVENT_IN) {
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EV_SET(&kev[n], fd, EVFILT_READ, EV_DELETE, 0, 0, NULL);
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n++;
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}
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if (addevents & FDEVENT_OUT) {
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EV_SET(&kev[n], fd, EVFILT_WRITE, EV_ADD|EV_CLEAR, 0, 0, NULL);
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n++;
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} else if (delevents & FDEVENT_OUT) {
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EV_SET(&kev[n], fd, EVFILT_WRITE, EV_DELETE, 0, 0, NULL);
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n++;
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}
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if (0 == n) return fd;
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ts.tv_sec = 0;
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ts.tv_nsec = 0;
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ret = kevent(ev->kq_fd,
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kev, n,
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NULL, 0,
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&ts);
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if (ret == -1) {
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log_error_write(ev->srv, __FILE__, __LINE__, "SS",
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"kqueue event set failed: ", strerror(errno));
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return -1;
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}
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return fd;
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}
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static int fdevent_freebsd_kqueue_poll(fdevents *ev, int timeout_ms) {
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int ret;
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struct timespec ts;
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ts.tv_sec = timeout_ms / 1000;
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ts.tv_nsec = (timeout_ms % 1000) * 1000000;
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ret = kevent(ev->kq_fd,
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NULL, 0,
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ev->kq_results, ev->maxfds,
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&ts);
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if (ret == -1) {
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switch(errno) {
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case EINTR:
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/* we got interrupted, perhaps just a SIGCHLD of a CGI script */
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return 0;
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default:
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log_error_write(ev->srv, __FILE__, __LINE__, "SS",
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"kqueue failed polling: ", strerror(errno));
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break;
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}
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}
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return ret;
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}
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static int fdevent_freebsd_kqueue_event_get_revent(fdevents *ev, size_t ndx) {
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int events = 0, e;
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e = ev->kq_results[ndx].filter;
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if (e == EVFILT_READ) {
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events |= FDEVENT_IN;
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} else if (e == EVFILT_WRITE) {
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events |= FDEVENT_OUT;
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}
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e = ev->kq_results[ndx].flags;
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if (e & EV_EOF) {
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events |= FDEVENT_HUP;
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}
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if (e & EV_ERROR) {
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events |= FDEVENT_ERR;
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}
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return events;
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}
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static int fdevent_freebsd_kqueue_event_get_fd(fdevents *ev, size_t ndx) {
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return ev->kq_results[ndx].ident;
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}
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static int fdevent_freebsd_kqueue_event_next_fdndx(fdevents *ev, int ndx) {
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UNUSED(ev);
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return (ndx < 0) ? 0 : ndx + 1;
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}
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static int fdevent_freebsd_kqueue_reset(fdevents *ev) {
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if (-1 == (ev->kq_fd = kqueue())) {
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log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
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"kqueue failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\"");
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return -1;
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}
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return 0;
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}
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int fdevent_freebsd_kqueue_init(fdevents *ev) {
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ev->type = FDEVENT_HANDLER_FREEBSD_KQUEUE;
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#define SET(x) \
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ev->x = fdevent_freebsd_kqueue_##x;
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SET(free);
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SET(poll);
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SET(reset);
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SET(event_del);
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SET(event_set);
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SET(event_next_fdndx);
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SET(event_get_fd);
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SET(event_get_revent);
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ev->kq_fd = -1;
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ev->kq_results = calloc(ev->maxfds, sizeof(*ev->kq_results));
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/* check that kqueue works */
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if (-1 == (ev->kq_fd = kqueue())) {
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log_error_write(ev->srv, __FILE__, __LINE__, "SSS",
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"kqueue failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\"");
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return -1;
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}
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close(ev->kq_fd);
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ev->kq_fd = -1;
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return 0;
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}
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#else
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int fdevent_freebsd_kqueue_init(fdevents *ev) {
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UNUSED(ev);
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log_error_write(ev->srv, __FILE__, __LINE__, "S",
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"kqueue not available, try to set server.event-handler = \"poll\" or \"select\"");
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return -1;
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}
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#endif
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