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Diffstat (limited to 'boost/process/detail/posix/signal.hpp')
-rw-r--r-- | boost/process/detail/posix/signal.hpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/boost/process/detail/posix/signal.hpp b/boost/process/detail/posix/signal.hpp new file mode 100644 index 0000000000..f9ef32d05d --- /dev/null +++ b/boost/process/detail/posix/signal.hpp @@ -0,0 +1,79 @@ +// Copyright (c) 2006, 2007 Julio M. Merino Vidal +// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling +// Copyright (c) 2009 Boris Schaeling +// Copyright (c) 2010 Felipe Tanus, Boris Schaeling +// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling +// Copyright (c) 2016 Klemens D. Morgenstern +// +// 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 BOOST_PROCESS_POSIX_SIGNAL_HPP +#define BOOST_PROCESS_POSIX_SIGNAL_HPP + +#include <boost/process/detail/posix/handler.hpp> +#include <signal.h> + +namespace boost { namespace process { namespace detail { namespace posix { + +#if defined(__GLIBC__) + using sighandler_t = ::sighandler_t; +#else + using sighandler_t = void(*)(int); +#endif + + +struct sig_init_ : handler_base_ext +{ + + sig_init_ (sighandler_t handler) : _handler(handler) {} + + template <class PosixExecutor> + void on_exec_setup(PosixExecutor&) + { + _old = ::signal(SIGCHLD, _handler); + } + + template <class Executor> + void on_error(Executor&, const std::error_code &) + { + if (!_reset) + { + ::signal(SIGCHLD, _old); + _reset = true; + } + } + + template <class Executor> + void on_success(Executor&) + { + if (!_reset) + { + ::signal(SIGCHLD, _old); + _reset = true; + } + } +private: + bool _reset = false; + ::boost::process::detail::posix::sighandler_t _old{0}; + ::boost::process::detail::posix::sighandler_t _handler{0}; +}; + +struct sig_ +{ + constexpr sig_() {} + + sig_init_ operator()(::boost::process::detail::posix::sighandler_t h) const {return h;} + sig_init_ operator= (::boost::process::detail::posix::sighandler_t h) const {return h;} + sig_init_ dfl() const {return SIG_DFL;} + sig_init_ ign() const {return SIG_IGN;} + +}; + + + + + +}}}} + +#endif |