1 files changed, 58 insertions, 0 deletions
diff --git a/libs/thread/test/sync/mutual_exclusion/locks/upgrade_lock/mod/release_pass.cpp b/libs/thread/test/sync/mutual_exclusion/locks/upgrade_lock/mod/release_pass.cpp
new file mode 100755
index 0000000000..b5976023c2
--- /dev/null
+++ b/libs/thread/test/sync/mutual_exclusion/locks/upgrade_lock/mod/release_pass.cpp
@@ -0,0 +1,58 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+// Copyright (C) 2011 Vicente J. Botet Escriba
+//
+//  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)
+
+// <boost/thread/locks.hpp>
+
+// template <class Mutex> class upgrade_lock;
+
+// void Mutex* release();
+
+#include <boost/thread/locks.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+struct shared_mutex
+{
+  static int lock_count;
+  static int unlock_count;
+  void lock_upgrade()
+  {
+    ++lock_count;
+  }
+  void unlock_upgrade()
+  {
+    ++unlock_count;
+  }
+};
+
+int shared_mutex::lock_count = 0;
+int shared_mutex::unlock_count = 0;
+
+shared_mutex m;
+
+int main()
+{
+  boost::upgrade_lock<shared_mutex> lk(m);
+  BOOST_TEST(lk.mutex() == &m);
+  BOOST_TEST(lk.owns_lock() == true);
+  BOOST_TEST(shared_mutex::lock_count == 1);
+  BOOST_TEST(shared_mutex::unlock_count == 0);
+  BOOST_TEST(lk.release() == &m);
+  BOOST_TEST(lk.mutex() == 0);
+  BOOST_TEST(lk.owns_lock() == false);
+  BOOST_TEST(shared_mutex::lock_count == 1);
+  BOOST_TEST(shared_mutex::unlock_count == 0);
+
+  return boost::report_errors();
+}
+