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70 lines
1.9 KiB
C++
70 lines
1.9 KiB
C++
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// Copyright (c) 2006, 2007 Julio M. Merino Vidal
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// Copyright (c) 2008 Ilya Sokolov, Boris Schaeling
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// Copyright (c) 2009 Boris Schaeling
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// Copyright (c) 2010 Felipe Tanus, Boris Schaeling
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// Copyright (c) 2011, 2012 Jeff Flinn, Boris Schaeling
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// Copyright (c) 2016 Klemens D. Morgenstern
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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/**
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* \file boost/process/spawn.hpp
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*
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* Defines the spawn function.
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*/
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#ifndef BOOST_PROCESS_SPAWN_HPP
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#define BOOST_PROCESS_SPAWN_HPP
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#include <boost/process/detail/config.hpp>
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#include <boost/process/detail/child_decl.hpp>
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#include <boost/process/detail/execute_impl.hpp>
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#include <boost/process/detail/async_handler.hpp>
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#if defined(BOOST_POSIX_API)
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#include <boost/process/posix.hpp>
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#endif
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namespace boost {
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namespace process {
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namespace detail {
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}
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/** Launch a process and detach it. Returns no handle.
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This function starts a process and immediately detaches it. It thereby prevents the system from creating a zombie process,
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but will also cause the system to be unable to wait for the child to exit.
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\note This will set `SIGCHLD` to `SIGIGN` on posix.
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\warning This function does not allow asynchronous operations, since it cannot wait for the end of the process.
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It will fail to compile if a reference to `boost::asio::io_context` is passed.
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*/
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template<typename ...Args>
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inline void spawn(Args && ...args)
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{
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typedef typename ::boost::process::detail::has_async_handler<Args...>::type
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has_async;
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static_assert(
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!has_async::value,
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"Spawn cannot wait for exit, so async properties cannot be used");
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auto c = ::boost::process::detail::execute_impl(
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#if defined(BOOST_POSIX_API)
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::boost::process::posix::sig.ign(),
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#endif
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std::forward<Args>(args)...);
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c.detach();
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}
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}}
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#endif
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