/* Copyright 2000-2004 The Apache Software Foundation
		 *
		 * Licensed 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.
		 */
		
		#include "apr_arch_file_io.h"
		#include "apr_arch_networkio.h"
		#include "apr_poll.h"
		#include "apr_errno.h"
		#include "apr_support.h"
		
		/* The only case where we don't use wait_for_io_or_timeout is on
		 * pre-BONE BeOS, so this check should be sufficient and simpler */
		#if !BEOS_R5
		#define USE_WAIT_FOR_IO
		#endif
		
		#ifdef USE_WAIT_FOR_IO
		
		#ifdef WAITIO_USES_POLL
		
		#ifdef HAVE_POLL_H
		#include <poll.h>
		#endif
		#ifdef HAVE_SYS_POLL_H
		#include <sys/poll.h>
		#endif
		
		apr_status_t apr_wait_for_io_or_timeout(apr_file_t *f, apr_socket_t *s,
		                                        int for_read)
        1959    {
        1959        struct pollfd pfd;
        1959        int rc, timeout;
		
        1959        timeout    = f        ? f->timeout / 1000 : s->timeout / 1000;
        1959        pfd.fd     = f        ? f->filedes        : s->socketdes;
        1959        pfd.events = for_read ? POLLIN            : POLLOUT;
		
        1959        do {
        1959            rc = poll(&pfd, 1, timeout);
        1959        } while (rc == -1 && errno == EINTR);
        1959        if (rc == 0) {
           2            return APR_TIMEUP;
		    }
        1957        else if (rc > 0) {
        1957            return APR_SUCCESS;
		    }
		    else {
      ######            return errno;
		    }
		}
		
		#else
		
		apr_status_t apr_wait_for_io_or_timeout(apr_file_t *f, apr_socket_t *s,
		                                        int for_read)
		{
		    apr_interval_time_t timeout;
		    apr_pollfd_t pfd;
		    int type = for_read ? APR_POLLIN : APR_POLLOUT;
		    apr_pollset_t *pollset;
		    apr_status_t status;
		
		    /* TODO - timeout should be less each time through this loop */
		    if (f) {
		        pfd.desc_type = APR_POLL_FILE;
		        pfd.desc.f = f;
		
		        pollset = f->pollset;
		        timeout = f->timeout;
		    }
		    else {
		        pfd.desc_type = APR_POLL_SOCKET;
		        pfd.desc.s = s;
		
		        pollset = s->pollset;
		        timeout = s->timeout;
		    }
		    pfd.reqevents = type;
		
		    /* Remove the object if it was in the pollset, then add in the new
		     * object with the correct reqevents value. Ignore the status result
		     * on the remove, because it might not be in there (yet).
		     */
		    (void) apr_pollset_remove(pollset, &pfd);
		
		    /* ### check status code */
		    (void) apr_pollset_add(pollset, &pfd);
		
		    do {
		        int numdesc;
		        const apr_pollfd_t *pdesc;
		
		        status = apr_pollset_poll(pollset, timeout, &numdesc, &pdesc);
		
		        if (numdesc == 1 && (pdesc[0].rtnevents & type) != 0) {
		            return APR_SUCCESS;
		        }
		    } while (APR_STATUS_IS_EINTR(status));
		
		    return status;
		}
		#endif /* WAITIO_USES_POLL */
		
		#endif /* USE_WAIT_FOR_IO */