initial checkin

libs/tasklet/examples/future.cpp

@@ -0,0 +1,44 @@
+#include <cstdlib>
+#include <iostream>
+#include <string>
+
+#include <boost/bind.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/thread.hpp>
+
+#include <boost/tasklet.hpp>
+#include <boost/tasklet/future.hpp>
+
+inline
+std::string helloworld_fn()
+{ return "Hello World"; }
+
+int main()
+{
+	try
+	{
+		boost::tasklets::scheduler<> sched;
+
+		boost::tasklets::packaged_task< std::string > pt( helloworld_fn);
+		boost::tasklets::unique_future< std::string > fu = pt.get_future();
+		boost::tasklet t( boost::move( pt), boost::tasklet::default_stacksize, boost::protected_stack_allocator());
+		sched.submit_tasklet( t);
+
+		for (;;)
+		{
+			while ( sched.run() );
+			if ( sched.empty() ) break;
+		}
+
+		std::cout << fu.get() << std::endl;
+
+		return EXIT_SUCCESS;
+	}
+	catch ( boost::tasklets::scheduler_error const& e)
+	{ std::cerr << "scheduler_error: " << e.what() << std::endl; }
+	catch ( std::exception const& e)
+	{ std::cerr << "exception: " << e.what() << std::endl; }
+	catch (...)
+	{ std::cerr << "unhandled exception" << std::endl; }
+	return EXIT_FAILURE;
+}