Rename the extracted boost subdirectory to ndnboost
diff --git a/ndnboost/smart_ptr/detail/sp_counted_base_pt.hpp b/ndnboost/smart_ptr/detail/sp_counted_base_pt.hpp
new file mode 100644
index 0000000..51c42a3
--- /dev/null
+++ b/ndnboost/smart_ptr/detail/sp_counted_base_pt.hpp
@@ -0,0 +1,136 @@
+#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
+#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
+
+// MS compatible compilers support #pragma once
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1020)
+# pragma once
+#endif
+
+//
+// detail/sp_counted_base_pt.hpp
+//
+// Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
+// Copyright 2004-2005 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 <ndnboost/detail/sp_typeinfo.hpp>
+#include <pthread.h>
+
+namespace ndnboost
+{
+
+namespace detail
+{
+
+class sp_counted_base
+{
+private:
+
+ sp_counted_base( sp_counted_base const & );
+ sp_counted_base & operator= ( sp_counted_base const & );
+
+ long use_count_; // #shared
+ long weak_count_; // #weak + (#shared != 0)
+
+ mutable pthread_mutex_t m_;
+
+public:
+
+ sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
+ {
+// HPUX 10.20 / DCE has a nonstandard pthread_mutex_init
+
+#if defined(__hpux) && defined(_DECTHREADS_)
+ pthread_mutex_init( &m_, pthread_mutexattr_default );
+#else
+ pthread_mutex_init( &m_, 0 );
+#endif
+ }
+
+ virtual ~sp_counted_base() // nothrow
+ {
+ pthread_mutex_destroy( &m_ );
+ }
+
+ // dispose() is called when use_count_ drops to zero, to release
+ // the resources managed by *this.
+
+ virtual void dispose() = 0; // nothrow
+
+ // destroy() is called when weak_count_ drops to zero.
+
+ virtual void destroy() // nothrow
+ {
+ delete this;
+ }
+
+ virtual void * get_deleter( sp_typeinfo const & ti ) = 0;
+ virtual void * get_untyped_deleter() = 0;
+
+ void add_ref_copy()
+ {
+ pthread_mutex_lock( &m_ );
+ ++use_count_;
+ pthread_mutex_unlock( &m_ );
+ }
+
+ bool add_ref_lock() // true on success
+ {
+ pthread_mutex_lock( &m_ );
+ bool r = use_count_ == 0? false: ( ++use_count_, true );
+ pthread_mutex_unlock( &m_ );
+ return r;
+ }
+
+ void release() // nothrow
+ {
+ pthread_mutex_lock( &m_ );
+ long new_use_count = --use_count_;
+ pthread_mutex_unlock( &m_ );
+
+ if( new_use_count == 0 )
+ {
+ dispose();
+ weak_release();
+ }
+ }
+
+ void weak_add_ref() // nothrow
+ {
+ pthread_mutex_lock( &m_ );
+ ++weak_count_;
+ pthread_mutex_unlock( &m_ );
+ }
+
+ void weak_release() // nothrow
+ {
+ pthread_mutex_lock( &m_ );
+ long new_weak_count = --weak_count_;
+ pthread_mutex_unlock( &m_ );
+
+ if( new_weak_count == 0 )
+ {
+ destroy();
+ }
+ }
+
+ long use_count() const // nothrow
+ {
+ pthread_mutex_lock( &m_ );
+ long r = use_count_;
+ pthread_mutex_unlock( &m_ );
+
+ return r;
+ }
+};
+
+} // namespace detail
+
+} // namespace ndnboost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED