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Viewing changes to deps/boost_intern/src/thread/example/future_unwrap.cpp

  • Committer: Package Import Robot
  • Author(s): Mattias Ellert
  • Date: 2015-07-31 13:17:55 UTC
  • mfrom: (5.1.3 sid)
  • Revision ID: package-import@ubuntu.com-20150731131755-mizprbmn7ogv33te
Tags: 0.4.1-1
* Update to version 0.4.1
* Implement Multi-Arch support

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deps/boost_intern/src/thread/example/future_unwrap.cpp
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// Copyright (C) 2012-2013 Vicente Botet
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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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#define BOOST_THREAD_VERSION 4
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#define BOOST_THREAD_USES_LOG
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#define BOOST_THREAD_USES_LOG_THREAD_ID
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#include <boost/thread/detail/log.hpp>
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#include <boost/thread/future.hpp>
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#include <boost/assert.hpp>
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#include <string>
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#if defined BOOST_THREAD_PROVIDES_FUTURE_UNWRAP
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int p1()
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{
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  BOOST_THREAD_LOG << "P1" << BOOST_THREAD_END_LOG;
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  return 123;
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}
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boost::future<int> p2()
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{
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  BOOST_THREAD_LOG << "<P2" << BOOST_THREAD_END_LOG;
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  boost::future<int> f1 = boost::async(boost::launch::async, &p1);
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  BOOST_THREAD_LOG << "P2>" << BOOST_THREAD_END_LOG;
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  return boost::move(f1);
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}
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int main()
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{
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  BOOST_THREAD_LOG << "<MAIN" << BOOST_THREAD_END_LOG;
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  try
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  {
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    boost::future<boost::future<int> > outer_future = boost::async(boost::launch::async, &p2);
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    boost::future<int> inner_future = outer_future.unwrap();
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    int i = inner_future.get();
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    BOOST_THREAD_LOG << "i= "<< i << "" << BOOST_THREAD_END_LOG;
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  }
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  catch (std::exception& ex)
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  {
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    BOOST_THREAD_LOG << "ERRORRRRR "<<ex.what() << "" << BOOST_THREAD_END_LOG;
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    return 1;
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  }
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  catch (...)
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  {
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    BOOST_THREAD_LOG << " ERRORRRRR exception thrown" << BOOST_THREAD_END_LOG;
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    return 2;
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  }
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  BOOST_THREAD_LOG << "MAIN>" << BOOST_THREAD_END_LOG;
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  return 0;
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}
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#else
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int main()
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{
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  return 0;
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}
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#endif