73 lines
2.0 KiB
C
73 lines
2.0 KiB
C
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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#include "config.h"
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#ifdef __MINGW32__
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# include <winsock2.h>
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#else
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# ifdef HAVE_POLL
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# include <poll.h>
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# else
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# include <sys/select.h>
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# endif
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#endif
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#ifdef HAVE_POLL
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int guac_wait_for_fd(int fd, int usec_timeout) {
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/* Initialize with single underlying file descriptor */
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struct pollfd fds[1] = {{
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.fd = fd,
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.events = POLLIN,
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.revents = 0
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}};
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/* No timeout if usec_timeout is negative */
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if (usec_timeout < 0)
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return poll(fds, 1, -1);
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/* Handle timeout if specified, rounding up to poll()'s granularity */
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return poll(fds, 1, (usec_timeout + 999) / 1000);
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}
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#else
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int guac_wait_for_fd(int fd, int usec_timeout) {
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fd_set fds;
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/* Initialize fd_set with single underlying file descriptor */
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FD_ZERO(&fds);
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FD_SET(fd, &fds);
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/* No timeout if usec_timeout is negative */
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if (usec_timeout < 0)
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return select(fd + 1, &fds, NULL, NULL, NULL);
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/* Handle timeout if specified */
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struct timeval timeout = {
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.tv_sec = usec_timeout / 1000000,
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.tv_usec = usec_timeout % 1000000
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};
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return select(fd + 1, &fds, NULL, NULL, &timeout);
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}
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#endif
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