1 files changed, 91 insertions, 0 deletions
diff --git a/libs/thread/example/fib_task_region.cpp b/libs/thread/example/fib_task_region.cpp
new file mode 100644
index 000000000..1540dc294
--- /dev/null
+++ b/libs/thread/example/fib_task_region.cpp
@@ -0,0 +1,91 @@
+// Copyright (C) 2012 Vicente Botet
+//
+//  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 <boost/config.hpp>
+#if ! defined  BOOST_NO_CXX11_DECLTYPE
+#define BOOST_RESULT_OF_USE_DECLTYPE
+#endif
+
+#define BOOST_THREAD_VERSION 4
+#define BOOST_THREAD_PROVIDES_EXECUTORS
+
+#include <boost/thread/experimental/task_region.hpp>
+#include <iostream>
+
+#if ! defined BOOST_NO_CXX11_RANGE_BASED_FOR &&  ! defined BOOST_NO_CXX11_LAMBDAS
+
+int fib_task_region(int n)
+{
+  using boost::experimental::parallel::task_region;
+  using boost::experimental::parallel::task_region_handle;
+
+  if (n == 0) return 0;
+  if (n == 1) return 1;
+
+  int n1;
+  int n2;
+
+  task_region([&](task_region_handle& trh)
+      {
+        trh.run([&]
+            {
+              n1 = fib_task_region(n - 1);
+            });
+
+        n2 = fib_task_region(n - 2);
+      });
+
+  return n1 + n2;
+}
+
+#if defined BOOST_THREAD_PROVIDES_EXECUTORS
+template <class Ex>
+int fib_task_region_gen( Ex& ex, int n)
+{
+  using boost::experimental::parallel::task_region;
+  using boost::experimental::parallel::task_region_handle_gen;
+
+  if (n == 0) return 0;
+  if (n == 1) return 1;
+
+  int n1;
+  int n2;
+
+  task_region(ex, [&](task_region_handle_gen<Ex>& trh)
+      {
+        trh.run([&]
+            {
+              n1 = fib_task_region(n - 1);
+            });
+
+        n2 = fib_task_region(n - 2);
+      });
+
+  return n1 + n2;
+}
+#endif
+
+int main()
+{
+  for (int i = 0; i<10; ++i) {
+    std::cout << fib_task_region(i) << " ";
+  }
+  std::cout << std::endl;
+
+#if defined BOOST_THREAD_PROVIDES_EXECUTORS
+  boost::basic_thread_pool tp;
+  for (int i = 0; i<10; ++i) {
+    std::cout << fib_task_region_gen(tp,i) << " ";
+  }
+  std::cout << std::endl;
+#endif
+  return 0;
+}
+#else
+int main()
+{
+  return 0;
+}
+#endif