diff options
Diffstat (limited to 'network_io/unix/poll.c')
| -rw-r--r-- | network_io/unix/poll.c | 464 |
1 files changed, 0 insertions, 464 deletions
diff --git a/network_io/unix/poll.c b/network_io/unix/poll.c deleted file mode 100644 index ee95cea5e..000000000 --- a/network_io/unix/poll.c +++ /dev/null @@ -1,464 +0,0 @@ -/* ==================================================================== - * Copyright (c) 1999 The Apache Group. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the Apache Group - * for use in the Apache HTTP server project (http://www.apache.org/)." - * - * 4. The names "Apache Server" and "Apache Group" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * apache@apache.org. - * - * 5. Products derived from this software may not be called "Apache" - * nor may "Apache" appear in their names without prior written - * permission of the Apache Group. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the Apache Group - * for use in the Apache HTTP server project (http://www.apache.org/)." - * - * THIS SOFTWARE IS PROVIDED BY THE APACHE GROUP ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE APACHE GROUP OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== - * - * This software consists of voluntary contributions made by many - * individuals on behalf of the Apache Group. - * For more information on the Apache Group and the Apache HTTP server - * project, please see <http://www.apache.org/>. - * - */ - -#include "networkio.h" -#include "apr_network_io.h" -#include "apr_general.h" -#include "apr_lib.h" -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif -#ifdef HAVE_SYS_TIME_H -#include <sys/time.h> -#endif - -#ifdef HAVE_POLL /* We can just use poll to do our socket polling. */ - -/* ***APRDOC******************************************************** - * ap_status_t ap_setup_poll(ap_context_t *, ap_int32_t, ap_pollfd_t **) - * Setup the memory required for poll to operate properly. - * arg 1) The context to operate on. - * arg 2) The number of socket descriptors to be polled. - * arg 3) The poll structure to be used. - */ -ap_status_t ap_setup_poll(ap_context_t *cont, ap_int32_t num, struct pollfd_t **new) -{ - (*new) = (struct pollfd_t *)ap_palloc(cont, sizeof(struct pollfd_t)); - (*new)->sock = ap_palloc(cont, sizeof(struct socket_t) * num); - (*new)->events = ap_palloc(cont, sizeof(ap_int16_t) * num); - (*new)->revents = ap_palloc(cont, sizeof(ap_int16_t) * num); - - if ((*new) == NULL) { - return APR_ENOMEM; - } - (*new)->cntxt = cont; - (*new)->curpos = 0; - return APR_SUCCESS; -} - -ap_int16_t get_event(ap_int16_t event) -{ - ap_int16_t rv = 0; - - if (event & APR_POLLIN) - rv |= POLLIN; - if (event & APR_POLLPRI) - rv |= POLLPRI; - if (event & APR_POLLOUT) - rv |= POLLOUT; - if (event & APR_POLLERR) - rv |= POLLERR; - if (event & APR_POLLHUP) - rv |= POLLHUP; - if (event & APR_POLLNVAL) - rv |= POLLNVAL; - - return rv; -} - -ap_int16_t get_revent(ap_int16_t event) -{ - ap_int16_t rv = 0; - - if (event & POLLIN) - rv |= APR_POLLIN; - if (event & POLLPRI) - rv |= APR_POLLPRI; - if (event & POLLOUT) - rv |= APR_POLLOUT; - if (event & POLLERR) - rv |= APR_POLLERR; - if (event & POLLHUP) - rv |= APR_POLLHUP; - if (event & POLLNVAL) - rv |= APR_POLLNVAL; - - return rv; -} - -/* ***APRDOC******************************************************** - * ap_status_t ap_add_poll_socket(ap_pollfd_t *, ap_socket_t *, ap_int16_t) - * Add a socket to the poll structure. - * arg 1) The poll structure we will be using. - * arg 2) The socket to add to the current poll structure. - * arg 3) The events to look for when we do the poll. One of: - * APR_POLLIN -- signal if read will not block - * APR_POLLPRI -- signal if prioirty data is availble to be read - * APR_POLLOUT -- signal if write will not block - */ -ap_status_t ap_add_poll_socket(struct pollfd_t *aprset, - struct socket_t *sock, ap_int16_t event) -{ - int i = 0; - - while (i < aprset->curpos && aprset->sock[i] != sock->socketdes) { - i++; - } - if (i >= aprset->curpos) { - aprset->curpos++; - } - aprset->sock[i] = sock->socketdes; - aprset->events[i] = get_event(event); - - return APR_SUCCESS; -} - -/* ***APRDOC******************************************************** - * ap_status_t ap_poll(ap_pollfd_t *, ap_int32_t *, ap_int32_t) - * Poll the sockets in the poll structure. This is a blocking call, - * and it will not return until either a socket has been signalled, or - * the timeout has expired. - * arg 1) The poll structure we will be using. - * arg 2) The number of sockets we are polling. - * arg 3) The amount of time in seconds to wait. This is a maximum, not - * a minimum. If a socket is signalled, we will wake up before this - * time. A negative number means wait until a socket is signalled. - * NOTE: The number of sockets signalled is returned in the second argument. - */ -ap_status_t ap_poll(struct pollfd_t *aprset, ap_int32_t *nsds, ap_int32_t timeout) -{ - int i; - struct pollfd *pollset; - int rv; - - pollset = (struct pollfd *)ap_palloc(aprset->cntxt, - sizeof(struct pollfd) * (*nsds)); - - for (i = 0; i < (*nsds); i++) { - pollset[i].fd = aprset->sock[i]; - pollset[i].events = aprset->events[i]; - } - - if (timeout != -1) { - timeout *= 1000; - } - - rv = poll(pollset, (*nsds), timeout); - (*nsds) = rv; - - for (i = 0; i < (*nsds); i++) { - aprset->revents[i] = get_revent(pollset[i].revents); - } - - if ((*nsds) < 0) { - return errno; - } - return APR_SUCCESS; -} - -/* ***APRDOC******************************************************** - * ap_status_t ap_get_revents(ap_pollfd_t *, ap_socket_t *, ap_int_16_t *) - * Get the return events for the specified socket. - * arg 1) The poll structure we will be using. - * arg 2) The socket we wish to get information about. - * arg 3) The returned events for the socket. One of: - * APR_POLLIN -- Data is available to be read - * APR_POLLPRI -- Prioirty data is availble to be read - * APR_POLLOUT -- Write will succeed - * APR_POLLERR -- An error occurred on the socket - * APR_POLLHUP -- The connection has been terminated - * APR_POLLNVAL -- This is an invalid socket to poll on. - * Socket not open. - */ -ap_status_t ap_get_revents(struct pollfd_t *aprset, struct socket_t *sock, ap_int16_t *event) -{ - int i = 0; - - while (i < aprset->curpos && aprset->sock[i] != sock->socketdes) { - i++; - } - if (i >= aprset->curpos) { - return APR_INVALSOCK; - } - (*event) = aprset->revents[i]; - return APR_SUCCESS; -} - -/* ***APRDOC******************************************************** - * ap_status_t ap_remove_poll_socket(ap_pollfd_t *, ap_socket_t *, ap_int16_t) - * Add a socket to the poll structure. - * arg 1) The poll structure we will be using. - * arg 2) The socket to remove from the current poll structure. - * arg 3) The events to stop looking for during the poll. One of: - * APR_POLLIN -- signal if read will not block - * APR_POLLPRI -- signal if prioirty data is availble to be read - * APR_POLLOUT -- signal if write will not block - */ -ap_status_t ap_remove_poll_socket(struct pollfd_t *aprset, - struct socket_t *sock, ap_int16_t events) -{ - ap_int16_t newevents; - int i = 0; - - while (i < aprset->curpos && aprset->sock[i] != sock->socketdes) { - i++; - } - if (i >= aprset->curpos) { - return APR_NOTFOUND; - } - newevents = get_event(events); - if (aprset->events[i] & newevents) { - aprset->events[i] ^= newevents; - } - - return APR_SUCCESS; -} - -/* ***APRDOC******************************************************** - * ap_status_t ap_clear_poll_sockets(ap_pollfd_t *) - * Remove all sockets from the poll structure. - * arg 1) The poll structure we will be using. - * arg 3) The events to clear from all sockets. One of: - * APR_POLLIN -- signal if read will not block - * APR_POLLPRI -- signal if prioirty data is availble to be read - * APR_POLLOUT -- signal if write will not block - */ -ap_status_t ap_clear_poll_sockets(struct pollfd_t *aprset, ap_int16_t events) -{ - int i = 0; - ap_int16_t newevents; - - newevents = get_event(events); - - while (i < aprset->curpos) { - if (aprset->events[i] & newevents) { - aprset->events[i] ^= newevents; - } - - return APR_SUCCESS; - i++; - } -} - -#else /* Use select to mimic poll */ - -ap_status_t ap_setup_poll(ap_context_t *cont, ap_int32_t num, struct pollfd_t ** -new) -{ - (*new) = (struct pollfd_t *)ap_palloc(cont, sizeof(struct pollfd_t) * num); - if ((*new) == NULL) { - return APR_ENOMEM; - } - (*new)->cntxt = cont; - (*new)->read = (fd_set *)ap_palloc(cont, sizeof(fd_set)); - (*new)->write = (fd_set *)ap_palloc(cont, sizeof(fd_set)); - (*new)->except = (fd_set *)ap_palloc(cont, sizeof(fd_set)); - FD_ZERO((*new)->read); - FD_ZERO((*new)->write); - FD_ZERO((*new)->except); - (*new)->highsock = -1; - return APR_SUCCESS; -} - -ap_status_t ap_add_poll_socket(struct pollfd_t *aprset, - struct socket_t *sock, ap_int16_t event) -{ - if (event & APR_POLLIN) { - FD_SET(sock->socketdes, aprset->read); - } - if (event & APR_POLLPRI) { - FD_SET(sock->socketdes, aprset->read); - } - if (event & APR_POLLOUT) { - FD_SET(sock->socketdes, aprset->write); - } - if (sock->socketdes > aprset->highsock) { - aprset->highsock = sock->socketdes; - } - return APR_SUCCESS; -} - -ap_status_t ap_poll(struct pollfd_t *aprset, ap_int32_t *nsds, ap_int32_t timeout) -{ - int rv; - struct timeval *thetime; - - if (timeout == -1) { - thetime = NULL; - } - else { - /* Convert milli-seconds into seconds and micro-seconds. */ - thetime = (struct timeval *)ap_palloc(aprset->cntxt, sizeof(struct timeval)); - thetime->tv_sec = timeout; - thetime->tv_usec = 0; - } - - rv = select(aprset->highsock + 1, aprset->read, aprset->write, - aprset->except, thetime); - - (*nsds) = rv; - if ((*nsds) == 0) { - return APR_TIMEUP; - } - if ((*nsds) < 0) { - return APR_EEXIST; - } - return APR_SUCCESS; -} - -ap_status_t ap_get_revents(struct pollfd_t *aprset, struct socket_t *sock, ap_int16_t *event) -{ - ap_int16_t revents = 0; - char data[256]; - int dummy = 256; - int flags = MSG_PEEK; - - /* We just want to PEEK at the data, so I am setting up a dummy WSABUF - * variable here. - */ - if (FD_ISSET(sock->socketdes, aprset->read)) { - revents |= APR_POLLIN; - if (recv(sock->socketdes, &data, dummy, flags) == -1) { - switch (errno) { - case ECONNRESET: - case ECONNABORTED: - case ESHUTDOWN: - case ENETRESET: { - revents ^= APR_POLLIN; - revents |= APR_POLLHUP; - break; - } - case ENOTSOCK: { - revents ^= APR_POLLIN; - revents |= APR_POLLNVAL; - } - default: { - revents ^= APR_POLLIN; - revents |= APR_POLLERR; - } - } - } - } - if (FD_ISSET(sock->socketdes, aprset->write)) { - revents |= APR_POLLOUT; - } - /* I am assuming that the except is for out of band data, not a failed - * connection on a non-blocking socket. Might be a bad assumption, but - * it works for now. rbb. - */ - if (FD_ISSET(sock->socketdes, aprset->except)) { - revents |= APR_POLLPRI; - } - - (*event) = revents; - return APR_SUCCESS; -} - -ap_status_t ap_remove_poll_socket(struct pollfd_t *aprset, - struct socket_t *sock, ap_int16_t events) -{ - if (events & APR_POLLIN) { - FD_CLR(sock->socketdes, aprset->read); - } - if (events & APR_POLLPRI) { - FD_CLR(sock->socketdes, aprset->read); - } - if (events & APR_POLLOUT) { - FD_CLR(sock->socketdes, aprset->write); - } - return APR_SUCCESS; -} - -ap_status_t ap_clear_poll_sockets(struct pollfd_t *aprset, ap_int16_t event) -{ - if (event & APR_POLLIN) { - FD_ZERO(aprset->read); - } - if (event & APR_POLLPRI) { - FD_ZERO(aprset->read); - } - if (event & APR_POLLOUT) { - FD_ZERO(aprset->write); - } - aprset->highsock = 0; - return APR_SUCCESS; -} - -#endif - -/* ***APRDOC******************************************************** - * ap_status_t ap_get_polldata(ap_pollfd_t *, void *) - * Return the context associated with the current poll. - * arg 1) The currently open pollfd. - * arg 2) The user data associated with the pollfd. - */ -ap_status_t ap_get_polldata(struct pollfd_t *pollfd, void *data) -{ - if (pollfd != NULL) { - return ap_get_userdata(pollfd->cntxt, &data); - } - else { - data = NULL; - return APR_ENOFILE; - } -} - -/* ***APRDOC******************************************************** - * ap_status_t ap_set_polldata(ap_pollfd_t *, void *) - * Return the context associated with the current poll. - * arg 1) The currently open pollfd. - * arg 2) The user data to associate with the pollfd. - */ -ap_status_t ap_set_polldata(struct pollfd_t *pollfd, void *data) -{ - if (pollfd != NULL) { - return ap_set_userdata(pollfd->cntxt, data); - } - else { - data = NULL; - return APR_ENOFILE; - } -} - |