initial checkin

libs/task/examples/submit.cpp

@@ -0,0 +1,75 @@
+
+//          Copyright Oliver Kowalke 2009.
+// 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 <iostream>
+#include <cstdlib>
+#include <stdexcept>
+
+#include <boost/bind.hpp>
+
+#include "boost/task.hpp"
+
+namespace tsk = boost::tasks;
+
+inline
+int fibonacci_fn( int n)
+{
+	if ( n == 0) return 0;
+	if ( n == 1) return 1;
+	int k1( 1), k2( 0);
+	for ( int i( 2); i <= n; ++i)
+	{
+		boost::this_thread::interruption_point();
+		int tmp( k1);
+		k1 = k1 + k2;
+		k2 = tmp;
+	}
+	boost::this_thread::interruption_point();
+	return k1;
+}
+
+int main( int argc, char *argv[])
+{
+	try
+	{
+		tsk::static_pool< tsk::unbounded_prio_queue< int > > pool( tsk::poolsize( 3) ); 
+
+		tsk::task< int > t1( fibonacci_fn, 10);
+		tsk::task< int > t2( fibonacci_fn, 10);
+		tsk::task< int > t3( fibonacci_fn, 10);
+		tsk::task< int > t4( fibonacci_fn, 10);
+
+		tsk::handle< int > h1(
+			tsk::async( boost::move( t1) ) );
+		tsk::handle< int > h2(
+			tsk::async(
+				boost::move( t2),
+				tsk::new_thread() ) );
+		tsk::handle< int > h3(
+			tsk::async(
+				boost::move( t3),
+				2,
+				pool) );
+		tsk::handle< int > h4(
+			tsk::async(
+				boost::move( t4),
+				2,
+				pool) );
+
+		std::cout << h1.get() << std::endl;
+		std::cout << h2.get() << std::endl;
+		std::cout << h3.get() << std::endl;
+		std::cout << h4.get() << std::endl;
+
+		return EXIT_SUCCESS;
+	}
+	catch ( std::exception const& e)
+	{ std::cerr << "exception: " << e.what() << std::endl; }
+	catch ( ... )
+	{ std::cerr << "unhandled" << std::endl; }
+
+	return EXIT_FAILURE;
+}