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70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* Copyright (C) 2007-2013 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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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <signal.h>
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#include <unistd.h>
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#include <sys/epoll.h>
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#include <sysdep-cancel.h>
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#include <sys/syscall.h>
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#ifdef __NR_epoll_pwait
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/* Wait for events on an epoll instance "epfd". Returns the number of
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triggered events returned in "events" buffer. Or -1 in case of
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error with the "errno" variable set to the specific error code. The
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"events" parameter is a buffer that will contain triggered
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events. The "maxevents" is the maximum number of events to be
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returned ( usually size of "events" ). The "timeout" parameter
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specifies the maximum wait time in milliseconds (-1 == infinite).
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The thread's signal mask is temporarily and atomically replaced with
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the one provided as parameter. */
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int epoll_pwait (int epfd, struct epoll_event *events,
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int maxevents, int timeout,
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const sigset_t *set)
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{
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if (SINGLE_THREAD_P)
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return INLINE_SYSCALL (epoll_pwait, 6, epfd, events, maxevents, timeout,
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set, _NSIG / 8);
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int oldtype = LIBC_CANCEL_ASYNC ();
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int result = INLINE_SYSCALL (epoll_pwait, 6, epfd, events, maxevents,
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timeout, set, _NSIG / 8);
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LIBC_CANCEL_RESET (oldtype);
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return result;
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}
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#else
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int epoll_pwait (int epfd, struct epoll_event *events,
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int maxevents, int timeout,
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const sigset_t *set)
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{
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__set_errno (ENOSYS);
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return -1;
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}
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stub_warning (epoll_pwait)
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#endif
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libc_hidden_def (epoll_pwait)
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