coroutine: initial commit

[SVN r81769]

example/parallel.cpp

@@ -0,0 +1,51 @@
+
+//          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 <cstdlib>
+#include <iostream>
+
+#include <boost/bind.hpp>
+#include <boost/coroutine/all.hpp>
+
+typedef boost::coroutines::coroutine< void() > coroutine_t;
+
+void first( coroutine_t::caller_type & self)
+{
+    std::cout << "started first! ";
+    for ( int i = 0; i < 10; ++i)
+    {
+        self();
+        std::cout << "a" << i;
+    }
+}
+
+void second( coroutine_t::caller_type & self)
+{
+    std::cout << "started second! ";
+    for ( int i = 0; i < 10; ++i)
+    {
+        self();
+        std::cout << "b" << i;
+    }
+}
+
+int main( int argc, char * argv[])
+{
+    {
+        coroutine_t c1( boost::bind( first, _1) );
+        coroutine_t c2( boost::bind( second, _1) );
+        while ( c1 && c2) {
+            c1();
+            std::cout << " ";
+            c2();
+            std::cout << " ";
+        }
+    }
+
+    std::cout << "\nDone" << std::endl;
+
+    return EXIT_SUCCESS;
+}