35 lines
610 B
C++
35 lines
610 B
C++
// SPDX-License-Identifier: BSD-2-Clause
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// author: Max Kellermann <max.kellermann@gmail.com>
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#include "SignalFD.hxx"
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#include "Error.hxx"
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#include <cassert>
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#include <sys/signalfd.h>
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void
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SignalFD::Create(const sigset_t &mask)
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{
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int new_fd = ::signalfd(fd.Get(), &mask, SFD_NONBLOCK|SFD_CLOEXEC);
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if (new_fd < 0)
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throw MakeErrno("signalfd() failed");
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if (!fd.IsDefined()) {
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fd = UniqueFileDescriptor{new_fd};
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}
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assert(new_fd == fd.Get());
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}
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int
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SignalFD::Read() noexcept
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{
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assert(fd.IsDefined());
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signalfd_siginfo info;
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return fd.Read(&info, sizeof(info)) > 0
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? info.ssi_signo
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: -1;
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}
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