diff options
Diffstat (limited to 'data/lighttpd/lighttpd-1.4.53/src/fdevent_freebsd_kqueue.c')
| -rw-r--r-- | data/lighttpd/lighttpd-1.4.53/src/fdevent_freebsd_kqueue.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/data/lighttpd/lighttpd-1.4.53/src/fdevent_freebsd_kqueue.c b/data/lighttpd/lighttpd-1.4.53/src/fdevent_freebsd_kqueue.c new file mode 100644 index 000000000..a1344c603 --- /dev/null +++ b/data/lighttpd/lighttpd-1.4.53/src/fdevent_freebsd_kqueue.c @@ -0,0 +1,232 @@ +#include "first.h" + +#include "fdevent_impl.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> +#include <fcntl.h> + +#ifdef FDEVENT_USE_FREEBSD_KQUEUE +# include <sys/event.h> +# include <sys/time.h> + +static void fdevent_freebsd_kqueue_free(fdevents *ev) { + close(ev->kq_fd); + free(ev->kq_results); +} + +static int fdevent_freebsd_kqueue_event_del(fdevents *ev, int fde_ndx, int fd) { + int ret, n = 0; + struct kevent kev[2]; + struct timespec ts; + int oevents; + + if (fde_ndx < 0) return -1; + + oevents = ev->fdarray[fd]->events; + + if (oevents & FDEVENT_IN) { + EV_SET(&kev[n], fd, EVFILT_READ, EV_DELETE, 0, 0, NULL); + n++; + } + if (oevents & FDEVENT_OUT) { + EV_SET(&kev[n], fd, EVFILT_WRITE, EV_DELETE, 0, 0, NULL); + n++; + } + + if (0 == n) return -1; + + ts.tv_sec = 0; + ts.tv_nsec = 0; + + ret = kevent(ev->kq_fd, + kev, n, + NULL, 0, + &ts); + + if (ret == -1) { + log_error_write(ev->srv, __FILE__, __LINE__, "SS", + "kqueue event delete failed: ", strerror(errno)); + + return -1; + } + + return -1; +} + +static int fdevent_freebsd_kqueue_event_set(fdevents *ev, int fde_ndx, int fd, int events) { + int ret, n = 0; + struct kevent kev[2]; + struct timespec ts; + int oevents = ev->fdarray[fd]->events; + int addevents = events & ~oevents; + int delevents = ~events & oevents; + + UNUSED(fde_ndx); + + if (events == oevents) return fd; + + if (addevents & FDEVENT_IN) { + EV_SET(&kev[n], fd, EVFILT_READ, EV_ADD, 0, 0, NULL); + n++; + } else if (delevents & FDEVENT_IN) { + EV_SET(&kev[n], fd, EVFILT_READ, EV_DELETE, 0, 0, NULL); + n++; + } + if (addevents & FDEVENT_OUT) { + EV_SET(&kev[n], fd, EVFILT_WRITE, EV_ADD, 0, 0, NULL); + n++; + } else if (delevents & FDEVENT_OUT) { + EV_SET(&kev[n], fd, EVFILT_WRITE, EV_DELETE, 0, 0, NULL); + n++; + } + + if (0 == n) return fd; + + ts.tv_sec = 0; + ts.tv_nsec = 0; + + ret = kevent(ev->kq_fd, + kev, n, + NULL, 0, + &ts); + + if (ret == -1) { + log_error_write(ev->srv, __FILE__, __LINE__, "SS", + "kqueue event set failed: ", strerror(errno)); + + return -1; + } + + return fd; +} + +static int fdevent_freebsd_kqueue_poll(fdevents *ev, int timeout_ms) { + int ret; + struct timespec ts; + + ts.tv_sec = timeout_ms / 1000; + ts.tv_nsec = (timeout_ms % 1000) * 1000000; + + ret = kevent(ev->kq_fd, + NULL, 0, + ev->kq_results, ev->maxfds, + &ts); + + if (ret == -1) { + switch(errno) { + case EINTR: + /* we got interrupted, perhaps just a SIGCHLD of a CGI script */ + return 0; + default: + log_error_write(ev->srv, __FILE__, __LINE__, "SS", + "kqueue failed polling: ", strerror(errno)); + break; + } + } + + return ret; +} + +static int fdevent_freebsd_kqueue_event_get_revent(fdevents *ev, size_t ndx) { + int events = 0, e; + + int filt = e = ev->kq_results[ndx].filter; + + if (e == EVFILT_READ) { + events |= FDEVENT_IN; + } else if (e == EVFILT_WRITE) { + events |= FDEVENT_OUT; + } + + e = ev->kq_results[ndx].flags; + + if (e & EV_EOF) { + if (filt == EVFILT_READ) { + events |= FDEVENT_RDHUP; + } else { + events |= FDEVENT_HUP; + } + } + + if (e & EV_ERROR) { + events |= FDEVENT_ERR; + } + + return events; +} + +static int fdevent_freebsd_kqueue_event_get_fd(fdevents *ev, size_t ndx) { + return ev->kq_results[ndx].ident; +} + +static int fdevent_freebsd_kqueue_event_next_fdndx(fdevents *ev, int ndx) { + UNUSED(ev); + + return (ndx < 0) ? 0 : ndx + 1; +} + +static int fdevent_freebsd_kqueue_reset(fdevents *ev) { + if (-1 == (ev->kq_fd = kqueue())) { + log_error_write(ev->srv, __FILE__, __LINE__, "SSS", + "kqueue failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\""); + + return -1; + } + + return 0; +} + + +int fdevent_freebsd_kqueue_init(fdevents *ev) { + ev->type = FDEVENT_HANDLER_FREEBSD_KQUEUE; +#define SET(x) \ + ev->x = fdevent_freebsd_kqueue_##x; + + SET(free); + SET(poll); + SET(reset); + + SET(event_del); + SET(event_set); + + SET(event_next_fdndx); + SET(event_get_fd); + SET(event_get_revent); + + ev->kq_fd = -1; + + ev->kq_results = calloc(ev->maxfds, sizeof(*ev->kq_results)); + force_assert(NULL != ev->kq_results); + + /* check that kqueue works */ + + if (-1 == (ev->kq_fd = kqueue())) { + log_error_write(ev->srv, __FILE__, __LINE__, "SSS", + "kqueue failed (", strerror(errno), "), try to set server.event-handler = \"poll\" or \"select\""); + + return -1; + } + + close(ev->kq_fd); + ev->kq_fd = -1; + + return 0; +} +#else +int fdevent_freebsd_kqueue_init(fdevents *ev) { + UNUSED(ev); + + log_error_write(ev->srv, __FILE__, __LINE__, "S", + "kqueue not available, try to set server.event-handler = \"poll\" or \"select\""); + + return -1; +} +#endif |