Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/src/boost/libs/fiber/examples/future.cpp b/src/boost/libs/fiber/examples/future.cpp
new file mode 100644
index 00000000..cc7c6b0f
--- /dev/null
+++ b/src/boost/libs/fiber/examples/future.cpp
@@ -0,0 +1,50 @@
+
+//          Copyright Oliver Kowalke 2013.
+// 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)
+
+#include <cstdlib>
+#include <exception>
+#include <functional>
+#include <iostream>
+#include <string>
+
+#include <boost/fiber/all.hpp>
+
+inline
+int fn( std::string const& str, int n)
+{
+	for ( int i = 0; i < n; ++i)
+	{
+		std::cout << i << ": " << str << std::endl;
+		boost::this_fiber::yield();
+	}
+
+    return n;
+}
+
+void start()
+{
+    boost::fibers::future< int > fi(
+        boost::fibers::async(
+            std::bind( fn, "abc", 5) ) );
+    fi.wait();
+    std::cout << "fn() returned " << fi.get() << std::endl;
+}
+
+int main()
+{
+	try
+	{
+        boost::fibers::fiber( start).join();
+		std::cout << "done." << std::endl;
+
+		return EXIT_SUCCESS;
+	}
+	catch ( std::exception const& e)
+	{ std::cerr << "exception: " << e.what() << std::endl; }
+	catch (...)
+	{ std::cerr << "unhandled exception" << std::endl; }
+	return EXIT_FAILURE;
+}