1 files changed, 78 insertions, 0 deletions
diff --git a/libs/thread/test/sync/mutual_exclusion/shared_mutex/try_lock_pass.cpp b/libs/thread/test/sync/mutual_exclusion/shared_mutex/try_lock_pass.cpp
new file mode 100755
index 0000000000..2f18834a8d
--- /dev/null
+++ b/libs/thread/test/sync/mutual_exclusion/shared_mutex/try_lock_pass.cpp
@@ -0,0 +1,78 @@
+//===----------------------------------------------------------------------===//
+//
+//                     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) 2012 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/shared_mutex.hpp>
+
+// class shared_mutex;
+
+// bool try_lock();
+
+#include <boost/thread/shared_mutex.hpp>
+#include <boost/thread/thread.hpp>
+#include <boost/detail/lightweight_test.hpp>
+
+boost::shared_mutex m;
+
+#if defined BOOST_THREAD_USES_CHRONO
+typedef boost::chrono::system_clock Clock;
+typedef Clock::time_point time_point;
+typedef Clock::duration duration;
+typedef boost::chrono::milliseconds ms;
+typedef boost::chrono::nanoseconds ns;
+#else
+#endif
+
+void f()
+{
+#if defined BOOST_THREAD_USES_CHRONO
+  time_point t0 = Clock::now();
+  BOOST_TEST(!m.try_lock());
+  BOOST_TEST(!m.try_lock());
+  BOOST_TEST(!m.try_lock());
+  while (!m.try_lock())
+    ;
+  time_point t1 = Clock::now();
+  m.unlock();
+  ns d = t1 - t0 - ms(250);
+  // This test is spurious as it depends on the time the thread system switches the threads
+  BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms
+#else
+  //time_point t0 = Clock::now();
+  //BOOST_TEST(!m.try_lock());
+  //BOOST_TEST(!m.try_lock());
+  //BOOST_TEST(!m.try_lock());
+  while (!m.try_lock())
+    ;
+  //time_point t1 = Clock::now();
+  m.unlock();
+  //ns d = t1 - t0 - ms(250);
+  // This test is spurious as it depends on the time the thread system switches the threads
+  //BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms
+#endif
+}
+
+int main()
+{
+  m.lock();
+  boost::thread t(f);
+#if defined BOOST_THREAD_USES_CHRONO
+  boost::this_thread::sleep_for(ms(250));
+#else
+#endif
+  m.unlock();
+  t.join();
+
+  return boost::report_errors();
+}
+