68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
/*
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* Copyright 2013-2018 Max Kellermann <max.kellermann@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SIGNAL_FD_HXX
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#define SIGNAL_FD_HXX
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#include "io/UniqueFileDescriptor.hxx"
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#include <csignal>
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/**
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* A class that wraps signalfd().
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*/
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class SignalFD {
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UniqueFileDescriptor fd;
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public:
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/**
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* Create the signalfd or update its mask.
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*
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* Throws on error.
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*/
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void Create(const sigset_t &mask);
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void Close() noexcept {
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fd.Close();
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}
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int Get() const noexcept {
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return fd.Get();
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}
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/**
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* Read the next signal from the file descriptor. Returns the
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* signal number on success or -1 if there are no more
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* signals.
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*/
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int Read() noexcept;
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};
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#endif
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