| /* Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifdef WIN32 |
| /* POSIX defines 1024 for the FD_SETSIZE */ |
| #define FD_SETSIZE 1024 |
| #endif |
| |
| #include "apr.h" |
| #include "apr_poll.h" |
| #include "apr_time.h" |
| #include "apr_portable.h" |
| #include "apr_arch_networkio.h" |
| #include "apr_arch_file_io.h" |
| #include "apr_arch_poll_private.h" |
| |
| #ifdef POLL_USES_SELECT |
| |
| APR_DECLARE(apr_status_t) apr_poll(apr_pollfd_t *aprset, int num, |
| apr_int32_t *nsds, |
| apr_interval_time_t timeout) |
| { |
| fd_set readset, writeset, exceptset; |
| int rv, i; |
| int maxfd = -1; |
| struct timeval tv, *tvptr; |
| #ifdef NETWARE |
| apr_datatype_e set_type = APR_NO_DESC; |
| #endif |
| |
| if (timeout < 0) { |
| tvptr = NULL; |
| } |
| else { |
| tv.tv_sec = (long) apr_time_sec(timeout); |
| tv.tv_usec = (long) apr_time_usec(timeout); |
| tvptr = &tv; |
| } |
| |
| FD_ZERO(&readset); |
| FD_ZERO(&writeset); |
| FD_ZERO(&exceptset); |
| |
| for (i = 0; i < num; i++) { |
| apr_os_sock_t fd; |
| |
| aprset[i].rtnevents = 0; |
| |
| if (aprset[i].desc_type == APR_POLL_SOCKET) { |
| #ifdef NETWARE |
| if (HAS_PIPES(set_type)) { |
| return APR_EBADF; |
| } |
| else { |
| set_type = APR_POLL_SOCKET; |
| } |
| #endif |
| fd = aprset[i].desc.s->socketdes; |
| } |
| else if (aprset[i].desc_type == APR_POLL_FILE) { |
| #if !APR_FILES_AS_SOCKETS |
| return APR_EBADF; |
| #else |
| #ifdef NETWARE |
| if (aprset[i].desc.f->is_pipe && !HAS_SOCKETS(set_type)) { |
| set_type = APR_POLL_FILE; |
| } |
| else |
| return APR_EBADF; |
| #endif /* NETWARE */ |
| |
| fd = aprset[i].desc.f->filedes; |
| |
| #endif /* APR_FILES_AS_SOCKETS */ |
| } |
| else { |
| break; |
| } |
| #if !defined(WIN32) && !defined(NETWARE) /* socket sets handled with array of handles */ |
| if (fd >= FD_SETSIZE) { |
| /* XXX invent new error code so application has a clue */ |
| return APR_EBADF; |
| } |
| #endif |
| if (aprset[i].reqevents & APR_POLLIN) { |
| FD_SET(fd, &readset); |
| } |
| if (aprset[i].reqevents & APR_POLLOUT) { |
| FD_SET(fd, &writeset); |
| } |
| if (aprset[i].reqevents & |
| (APR_POLLPRI | APR_POLLERR | APR_POLLHUP | APR_POLLNVAL)) { |
| FD_SET(fd, &exceptset); |
| } |
| if ((int) fd > maxfd) { |
| maxfd = (int) fd; |
| } |
| } |
| |
| #ifdef NETWARE |
| if (HAS_PIPES(set_type)) { |
| rv = pipe_select(maxfd + 1, &readset, &writeset, &exceptset, tvptr); |
| } |
| else { |
| #endif |
| |
| rv = select(maxfd + 1, &readset, &writeset, &exceptset, tvptr); |
| |
| #ifdef NETWARE |
| } |
| #endif |
| |
| (*nsds) = rv; |
| if ((*nsds) == 0) { |
| return APR_TIMEUP; |
| } |
| if ((*nsds) < 0) { |
| return apr_get_netos_error(); |
| } |
| |
| (*nsds) = 0; |
| for (i = 0; i < num; i++) { |
| apr_os_sock_t fd; |
| |
| if (aprset[i].desc_type == APR_POLL_SOCKET) { |
| fd = aprset[i].desc.s->socketdes; |
| } |
| else if (aprset[i].desc_type == APR_POLL_FILE) { |
| #if !APR_FILES_AS_SOCKETS |
| return APR_EBADF; |
| #else |
| fd = aprset[i].desc.f->filedes; |
| #endif |
| } |
| else { |
| break; |
| } |
| if (FD_ISSET(fd, &readset)) { |
| aprset[i].rtnevents |= APR_POLLIN; |
| } |
| if (FD_ISSET(fd, &writeset)) { |
| aprset[i].rtnevents |= APR_POLLOUT; |
| } |
| if (FD_ISSET(fd, &exceptset)) { |
| aprset[i].rtnevents |= APR_POLLERR; |
| } |
| if (aprset[i].rtnevents) { |
| (*nsds)++; |
| } |
| } |
| |
| return APR_SUCCESS; |
| } |
| |
| #endif /* POLL_USES_SELECT */ |
| |
| #ifdef POLLSET_USES_SELECT |
| |
| struct apr_pollset_t |
| { |
| apr_pool_t *pool; |
| |
| apr_uint32_t nelts; |
| apr_uint32_t nalloc; |
| fd_set readset, writeset, exceptset; |
| int maxfd; |
| apr_pollfd_t *query_set; |
| apr_pollfd_t *result_set; |
| #ifdef NETWARE |
| int set_type; |
| #endif |
| }; |
| |
| APR_DECLARE(apr_status_t) apr_pollset_create(apr_pollset_t **pollset, |
| apr_uint32_t size, |
| apr_pool_t *p, |
| apr_uint32_t flags) |
| { |
| if (flags & APR_POLLSET_THREADSAFE) { |
| *pollset = NULL; |
| return APR_ENOTIMPL; |
| } |
| #ifdef FD_SETSIZE |
| if (size > FD_SETSIZE) { |
| *pollset = NULL; |
| return APR_EINVAL; |
| } |
| #endif |
| *pollset = apr_palloc(p, sizeof(**pollset)); |
| (*pollset)->nelts = 0; |
| (*pollset)->nalloc = size; |
| (*pollset)->pool = p; |
| FD_ZERO(&((*pollset)->readset)); |
| FD_ZERO(&((*pollset)->writeset)); |
| FD_ZERO(&((*pollset)->exceptset)); |
| (*pollset)->maxfd = 0; |
| #ifdef NETWARE |
| (*pollset)->set_type = APR_NO_DESC; |
| #endif |
| (*pollset)->query_set = apr_palloc(p, size * sizeof(apr_pollfd_t)); |
| (*pollset)->result_set = apr_palloc(p, size * sizeof(apr_pollfd_t)); |
| |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_pollset_destroy(apr_pollset_t * pollset) |
| { |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_pollset_add(apr_pollset_t *pollset, |
| const apr_pollfd_t *descriptor) |
| { |
| apr_os_sock_t fd; |
| |
| if (pollset->nelts == pollset->nalloc) { |
| return APR_ENOMEM; |
| } |
| |
| pollset->query_set[pollset->nelts] = *descriptor; |
| |
| if (descriptor->desc_type == APR_POLL_SOCKET) { |
| #ifdef NETWARE |
| /* NetWare can't handle mixed descriptor types in select() */ |
| if (HAS_PIPES(pollset->set_type)) { |
| return APR_EBADF; |
| } |
| else { |
| pollset->set_type = APR_POLL_SOCKET; |
| } |
| #endif |
| fd = descriptor->desc.s->socketdes; |
| } |
| else { |
| #if !APR_FILES_AS_SOCKETS |
| return APR_EBADF; |
| #else |
| #ifdef NETWARE |
| /* NetWare can't handle mixed descriptor types in select() */ |
| if (descriptor->desc.f->is_pipe && !HAS_SOCKETS(pollset->set_type)) { |
| pollset->set_type = APR_POLL_FILE; |
| fd = descriptor->desc.f->filedes; |
| } |
| else { |
| return APR_EBADF; |
| } |
| #else |
| fd = descriptor->desc.f->filedes; |
| #endif |
| #endif |
| } |
| #if !defined(WIN32) && !defined(NETWARE) /* socket sets handled with array of handles */ |
| if (fd >= FD_SETSIZE) { |
| /* XXX invent new error code so application has a clue */ |
| return APR_EBADF; |
| } |
| #endif |
| if (descriptor->reqevents & APR_POLLIN) { |
| FD_SET(fd, &(pollset->readset)); |
| } |
| if (descriptor->reqevents & APR_POLLOUT) { |
| FD_SET(fd, &(pollset->writeset)); |
| } |
| if (descriptor->reqevents & |
| (APR_POLLPRI | APR_POLLERR | APR_POLLHUP | APR_POLLNVAL)) { |
| FD_SET(fd, &(pollset->exceptset)); |
| } |
| if ((int) fd > pollset->maxfd) { |
| pollset->maxfd = (int) fd; |
| } |
| pollset->nelts++; |
| return APR_SUCCESS; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_pollset_remove(apr_pollset_t * pollset, |
| const apr_pollfd_t * descriptor) |
| { |
| apr_uint32_t i; |
| apr_os_sock_t fd; |
| |
| if (descriptor->desc_type == APR_POLL_SOCKET) { |
| fd = descriptor->desc.s->socketdes; |
| } |
| else { |
| #if !APR_FILES_AS_SOCKETS |
| return APR_EBADF; |
| #else |
| fd = descriptor->desc.f->filedes; |
| #endif |
| } |
| |
| for (i = 0; i < pollset->nelts; i++) { |
| if (descriptor->desc.s == pollset->query_set[i].desc.s) { |
| /* Found an instance of the fd: remove this and any other copies */ |
| apr_uint32_t dst = i; |
| apr_uint32_t old_nelts = pollset->nelts; |
| pollset->nelts--; |
| for (i++; i < old_nelts; i++) { |
| if (descriptor->desc.s == pollset->query_set[i].desc.s) { |
| pollset->nelts--; |
| } |
| else { |
| pollset->query_set[dst] = pollset->query_set[i]; |
| dst++; |
| } |
| } |
| FD_CLR(fd, &(pollset->readset)); |
| FD_CLR(fd, &(pollset->writeset)); |
| FD_CLR(fd, &(pollset->exceptset)); |
| if (((int) fd == pollset->maxfd) && (pollset->maxfd > 0)) { |
| pollset->maxfd--; |
| } |
| return APR_SUCCESS; |
| } |
| } |
| |
| return APR_NOTFOUND; |
| } |
| |
| APR_DECLARE(apr_status_t) apr_pollset_poll(apr_pollset_t *pollset, |
| apr_interval_time_t timeout, |
| apr_int32_t *num, |
| const apr_pollfd_t **descriptors) |
| { |
| int rv; |
| apr_uint32_t i, j; |
| struct timeval tv, *tvptr; |
| fd_set readset, writeset, exceptset; |
| |
| if (timeout < 0) { |
| tvptr = NULL; |
| } |
| else { |
| tv.tv_sec = (long) apr_time_sec(timeout); |
| tv.tv_usec = (long) apr_time_usec(timeout); |
| tvptr = &tv; |
| } |
| |
| memcpy(&readset, &(pollset->readset), sizeof(fd_set)); |
| memcpy(&writeset, &(pollset->writeset), sizeof(fd_set)); |
| memcpy(&exceptset, &(pollset->exceptset), sizeof(fd_set)); |
| |
| #ifdef NETWARE |
| if (HAS_PIPES(pollset->set_type)) { |
| rv = pipe_select(pollset->maxfd + 1, &readset, &writeset, &exceptset, |
| tvptr); |
| } |
| else |
| #endif |
| rv = select(pollset->maxfd + 1, &readset, &writeset, &exceptset, |
| tvptr); |
| |
| (*num) = rv; |
| if (rv < 0) { |
| return apr_get_netos_error(); |
| } |
| if (rv == 0) { |
| return APR_TIMEUP; |
| } |
| j = 0; |
| for (i = 0; i < pollset->nelts; i++) { |
| apr_os_sock_t fd; |
| if (pollset->query_set[i].desc_type == APR_POLL_SOCKET) { |
| fd = pollset->query_set[i].desc.s->socketdes; |
| } |
| else { |
| #if !APR_FILES_AS_SOCKETS |
| return APR_EBADF; |
| #else |
| fd = pollset->query_set[i].desc.f->filedes; |
| #endif |
| } |
| if (FD_ISSET(fd, &readset) || FD_ISSET(fd, &writeset) || |
| FD_ISSET(fd, &exceptset)) { |
| pollset->result_set[j] = pollset->query_set[i]; |
| pollset->result_set[j].rtnevents = 0; |
| if (FD_ISSET(fd, &readset)) { |
| pollset->result_set[j].rtnevents |= APR_POLLIN; |
| } |
| if (FD_ISSET(fd, &writeset)) { |
| pollset->result_set[j].rtnevents |= APR_POLLOUT; |
| } |
| if (FD_ISSET(fd, &exceptset)) { |
| pollset->result_set[j].rtnevents |= APR_POLLERR; |
| } |
| j++; |
| } |
| } |
| (*num) = j; |
| |
| if (descriptors) |
| *descriptors = pollset->result_set; |
| return APR_SUCCESS; |
| } |
| |
| #endif /* POLLSET_USES_SELECT */ |
