48 lines
1.5 KiB
C
48 lines
1.5 KiB
C
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/* poll file descriptors. Hurd version.
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Copyright (C) 1998-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sys/poll.h>
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#include <sys/time.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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/* Poll the file descriptors described by the NFDS structures starting at
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FDS. If TIMEOUT is nonzero and not -1, allow TIMEOUT milliseconds for
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an event to occur; if TIMEOUT is -1, block until an event occurs.
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Returns the number of file descriptors with events, zero if timed out,
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or -1 for errors. */
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int
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__poll (struct pollfd *fds, nfds_t nfds, int timeout)
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{
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struct timespec ts, *to;
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if (timeout < 0)
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to = NULL;
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else
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{
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ts.tv_sec = timeout / 1000;
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ts.tv_nsec = (timeout % 1000) * 1000000;
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to = &ts;
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}
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return _hurd_select (nfds, fds, NULL, NULL, NULL, to, NULL);
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}
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libc_hidden_def (__poll)
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weak_alias (__poll, poll)
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