initial checkin

libs/tasklet/examples/join.cpp

@@ -0,0 +1,70 @@
+#include <cstdlib>
+#include <iostream>
+#include <string>
+
+#include <boost/bind.hpp>
+
+#include <boost/tasklet.hpp>
+
+int value1 = 0;
+int value2 = 0;
+
+void fn_1()
+{
+	for ( int i = 0; i < 5; ++i)
+	{
+		++value1;
+		std::cout << "fn_1() increment value1 " << value1 << std::endl;
+		boost::this_tasklet::yield();
+	}
+}
+
+void fn_2( boost::tasklet f)
+{
+	for ( int i = 0; i < 5; ++i)
+	{
+		++value2;
+		std::cout << "fn_2() increment value2 " << value2 << std::endl;
+		if ( i == 1)
+		{
+			std::cout << "fn_2() join tasklet " << f.get_id() << std::endl;
+			f.join();
+			std::cout << "fn_2() tasklet " << f.get_id() << " joined" << std::endl;
+		}
+		boost::this_tasklet::yield();
+	}
+}
+
+int main()
+{
+	try
+	{
+		boost::tasklets::scheduler<> sched;
+
+		boost::tasklet f( fn_1, boost::tasklet::default_stacksize, boost::protected_stack_allocator());
+		sched.submit_tasklet( f);
+		sched.submit_tasklet(
+			boost::tasklet(
+				fn_2, f, boost::tasklet::default_stacksize, boost::protected_stack_allocator()) );
+
+		std::cout << "start" << std::endl;
+		std::cout << "tasklet to be joined " << f.get_id() << std::endl;
+
+		for (;;)
+		{
+			while ( sched.run() );
+			if ( sched.empty() ) break;
+		}
+
+		std::cout << "finish: value1 == " << value1 << ", value2 == " << value2 << 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;
+}