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authorMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
committerMatthias P. Braendli <matthias.braendli@mpb.li>2019-10-07 04:52:50 +0200
commit0aa6201a490bfabc0ae021ceb9f1fb0f46727c5d (patch)
treea71d934d8151dd43e7c16555fef17fd749c5da70 /lib/asio/detail/posix_signal_blocker.hpp
parent558d74bffd9f069955af52c0b308a1d6169bcff0 (diff)
parent0330221d51421caa110b8c5dcb567cc3d0620eb9 (diff)
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Merge lime output into next branch
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diff --git a/lib/asio/detail/posix_signal_blocker.hpp b/lib/asio/detail/posix_signal_blocker.hpp
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-//
-// detail/posix_signal_blocker.hpp
-// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-//
-// Copyright (c) 2003-2018 Christopher M. Kohlhoff (chris at kohlhoff dot com)
-//
-// Distributed under the Boost Software License, Version 1.0. (See accompanying
-// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
-//
-
-#ifndef ASIO_DETAIL_POSIX_SIGNAL_BLOCKER_HPP
-#define ASIO_DETAIL_POSIX_SIGNAL_BLOCKER_HPP
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1200)
-# pragma once
-#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
-
-#include "asio/detail/config.hpp"
-
-#if defined(ASIO_HAS_PTHREADS)
-
-#include <csignal>
-#include <pthread.h>
-#include <signal.h>
-#include "asio/detail/noncopyable.hpp"
-
-#include "asio/detail/push_options.hpp"
-
-namespace asio {
-namespace detail {
-
-class posix_signal_blocker
- : private noncopyable
-{
-public:
- // Constructor blocks all signals for the calling thread.
- posix_signal_blocker()
- : blocked_(false)
- {
- sigset_t new_mask;
- sigfillset(&new_mask);
- blocked_ = (pthread_sigmask(SIG_BLOCK, &new_mask, &old_mask_) == 0);
- }
-
- // Destructor restores the previous signal mask.
- ~posix_signal_blocker()
- {
- if (blocked_)
- pthread_sigmask(SIG_SETMASK, &old_mask_, 0);
- }
-
- // Block all signals for the calling thread.
- void block()
- {
- if (!blocked_)
- {
- sigset_t new_mask;
- sigfillset(&new_mask);
- blocked_ = (pthread_sigmask(SIG_BLOCK, &new_mask, &old_mask_) == 0);
- }
- }
-
- // Restore the previous signal mask.
- void unblock()
- {
- if (blocked_)
- blocked_ = (pthread_sigmask(SIG_SETMASK, &old_mask_, 0) != 0);
- }
-
-private:
- // Have signals been blocked.
- bool blocked_;
-
- // The previous signal mask.
- sigset_t old_mask_;
-};
-
-} // namespace detail
-} // namespace asio
-
-#include "asio/detail/pop_options.hpp"
-
-#endif // defined(ASIO_HAS_PTHREADS)
-
-#endif // ASIO_DETAIL_POSIX_SIGNAL_BLOCKER_HPP