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