1 files changed, 53 insertions, 0 deletions
diff --git a/src/boost/libs/thread/example/with_lock_guard.cpp b/src/boost/libs/thread/example/with_lock_guard.cpp
new file mode 100644
index 000000000..f3a4cd806
--- /dev/null
+++ b/src/boost/libs/thread/example/with_lock_guard.cpp
@@ -0,0 +1,53 @@
+// (C) Copyright 2013 Ruslan Baratov
+// Copyright (C) 2014 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)
+
+//  See www.boost.org/libs/thread for documentation.
+
+#define BOOST_THREAD_VERSION 4
+
+#include <iostream> // std::cout
+#include <boost/thread/scoped_thread.hpp>
+#include <boost/thread/with_lock_guard.hpp>
+
+boost::mutex m; // protection for 'x' and 'std::cout'
+int x;
+
+#if defined(BOOST_NO_CXX11_LAMBDAS)  || (defined BOOST_MSVC && _MSC_VER < 1700)
+void print_x() {
+  ++x;
+  std::cout << "x = " << x << std::endl;
+}
+
+void job() {
+  for (int i = 0; i < 10; ++i) {
+    boost::with_lock_guard(m, print_x);
+    boost::this_thread::sleep_for(boost::chrono::milliseconds(100));
+  }
+}
+#else
+void job() {
+  for (int i = 0; i < 10; ++i) {
+    boost::with_lock_guard(
+        m,
+        []() {
+          ++x;
+          std::cout << "x = " << x << std::endl;
+        }
+    );
+    boost::this_thread::sleep_for(boost::chrono::milliseconds(100));
+  }
+}
+#endif
+
+int main() {
+#if defined(BOOST_NO_CXX11_LAMBDAS)  || (defined BOOST_MSVC && _MSC_VER < 1700)
+  std::cout << "(no lambdas)" << std::endl;
+#endif
+  boost::scoped_thread<> thread_1((boost::thread(job)));
+  boost::scoped_thread<> thread_2((boost::thread(job)));
+  boost::scoped_thread<> thread_3((boost::thread(job)));
+  return 0;
+}