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>
#include <fcntl.h>
#ifdef FDEVENT_USE_SOLARIS_DEVPOLL
# include <sys/devpoll.h>
# include <sys/ioctl.h>
__attribute_cold__
static void fdevent_solaris_devpoll_free(fdevents *ev) {
free(ev->devpollfds);
close(ev->devpoll_fd);
}
/* return -1 is fine here */
static int fdevent_solaris_devpoll_event_del(fdevents *ev, fdnode *fdn) {
struct pollfd pfd;
pfd.fd = fdn->fd;
pfd.events = POLLREMOVE;
pfd.revents = 0;
return (-1 != write(ev->devpoll_fd, &pfd, sizeof(pfd))) ? 0 : -1;
}
static int fdevent_solaris_devpoll_event_set(fdevents *ev, fdnode *fdn, int events) {
struct pollfd pfd;
pfd.fd = fdn->fde_ndx = fdn->fd;
#ifndef POLLRDHUP
events &= ~FDEVENT_RDHUP;
#endif
pfd.events = events;
pfd.revents = 0;
return (-1 != write(ev->devpoll_fd, &pfd, sizeof(pfd))) ? 0 : -1;
}
static int fdevent_solaris_devpoll_poll(fdevents *ev, int timeout_ms) {
int n;
struct dvpoll dopoll;
dopoll.dp_timeout = timeout_ms;
dopoll.dp_nfds = ev->maxfds - 1;
dopoll.dp_fds = ev->devpollfds;
n = ioctl(ev->devpoll_fd, DP_POLL, &dopoll);
for (int i = 0; i < n; ++i) {
fdnode * const fdn = ev->fdarray[ev->devpollfds[i].fd];
int revents = ev->devpollfds[i].revents;
if (0 == ((uintptr_t)fdn & 0x3)) {
(*fdn->handler)(fdn->ctx, revents);
}
}
return n;
}
__attribute_cold__
int fdevent_solaris_devpoll_reset(fdevents *ev) {
/* a forked process does only inherit the filedescriptor,
* but every operation on the device will lead to a EACCES */
if ((ev->devpoll_fd = fdevent_open_cloexec("/dev/poll", 1, O_RDWR, 0)) < 0) return -1;
return 0;
}
__attribute_cold__
int fdevent_solaris_devpoll_init(fdevents *ev) {
force_assert(POLLIN == FDEVENT_IN);
force_assert(POLLPRI == FDEVENT_PRI);
force_assert(POLLOUT == FDEVENT_OUT);
force_assert(POLLERR == FDEVENT_ERR);
force_assert(POLLHUP == FDEVENT_HUP);
force_assert(POLLNVAL == FDEVENT_NVAL);
#ifdef POLLRDHUP
force_assert(POLLRDHUP == FDEVENT_RDHUP);
#endif
ev->type = FDEVENT_HANDLER_SOLARIS_DEVPOLL;
ev->event_set = fdevent_solaris_devpoll_event_set;
ev->event_del = fdevent_solaris_devpoll_event_del;
ev->poll = fdevent_solaris_devpoll_poll;
ev->reset = fdevent_solaris_devpoll_reset;
ev->free = fdevent_solaris_devpoll_free;
ev->devpoll_fd = -1;
ev->devpollfds = malloc(sizeof(*ev->devpollfds) * ev->maxfds);
force_assert(NULL != ev->devpollfds);
return 0;
}
#endif