From fae4d58de691583116ee401532a9bd1ee8bb5f03 Mon Sep 17 00:00:00 2001
From: Andrew Johnson <anj@aps.anl.gov>
Date: Mon, 27 Nov 2017 11:19:33 -0600
Subject: [PATCH] Add spinlock_pt.hpp for older VxWorks versions

---
 vxWorks/Makefile                              |  1 +
 .../boost/smart_ptr/detail/spinlock_pt.hpp    | 79 +++++++++++++++++++
 2 files changed, 80 insertions(+)
 create mode 100644 vxWorks/boost/smart_ptr/detail/spinlock_pt.hpp

diff --git a/vxWorks/Makefile b/vxWorks/Makefile
index d3b122bc4..e2c0b5d2d 100644
--- a/vxWorks/Makefile
+++ b/vxWorks/Makefile
@@ -44,6 +44,7 @@ INC_vxWorks += boost/smart_ptr/detail/sp_counted_impl.hpp
 INC_vxWorks += boost/smart_ptr/detail/sp_has_sync.hpp
 INC_vxWorks += boost/smart_ptr/detail/spinlock.hpp
 INC_vxWorks += boost/smart_ptr/detail/spinlock_pool.hpp
+INC_vxWorks += boost/smart_ptr/detail/spinlock_pt.hpp
 INC_vxWorks += boost/smart_ptr/detail/spinlock_sync.hpp
 INC_vxWorks += boost/smart_ptr/detail/sp_nullptr_t.hpp
 INC_vxWorks += boost/smart_ptr/detail/yield_k.hpp
diff --git a/vxWorks/boost/smart_ptr/detail/spinlock_pt.hpp b/vxWorks/boost/smart_ptr/detail/spinlock_pt.hpp
new file mode 100644
index 000000000..f9cabfc3a
--- /dev/null
+++ b/vxWorks/boost/smart_ptr/detail/spinlock_pt.hpp
@@ -0,0 +1,79 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+//  Copyright (c) 2008 Peter Dimov
+//
+//  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 <pthread.h>
+
+namespace boost
+{
+
+namespace detail
+{
+
+class spinlock
+{
+public:
+
+    pthread_mutex_t v_;
+
+public:
+
+    bool try_lock()
+    {
+        return pthread_mutex_trylock( &v_ ) == 0;
+    }
+
+    void lock()
+    {
+        pthread_mutex_lock( &v_ );
+    }
+
+    void unlock()
+    {
+        pthread_mutex_unlock( &v_ );
+    }
+
+public:
+
+    class scoped_lock
+    {
+    private:
+
+        spinlock & sp_;
+
+        scoped_lock( scoped_lock const & );
+        scoped_lock & operator=( scoped_lock const & );
+
+    public:
+
+        explicit scoped_lock( spinlock & sp ): sp_( sp )
+        {
+            sp.lock();
+        }
+
+        ~scoped_lock()
+        {
+            sp_.unlock();
+        }
+    };
+};
+
+} // namespace detail
+} // namespace boost
+
+#define BOOST_DETAIL_SPINLOCK_INIT { PTHREAD_MUTEX_INITIALIZER }
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SPINLOCK_PT_HPP_INCLUDED