-#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED\r
-#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED\r
-\r
-// MS compatible compilers support #pragma once\r
-\r
-#if defined(_MSC_VER) && (_MSC_VER >= 1020)\r
-# pragma once\r
-#endif\r
-\r
-//\r
-// detail/sp_counted_base_pt.hpp\r
-//\r
-// Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.\r
-// Copyright 2004-2005 Peter Dimov\r
-//\r
-// Distributed under the Boost Software License, Version 1.0. (See\r
-// accompanying file LICENSE_1_0.txt or copy at\r
-// http://www.boost.org/LICENSE_1_0.txt)\r
-//\r
-\r
-#include <boost/detail/sp_typeinfo.hpp>\r
-#include <pthread.h>\r
-\r
-namespace boost\r
-{\r
-\r
-namespace detail\r
-{\r
-\r
-class sp_counted_base\r
-{\r
-private:\r
-\r
- sp_counted_base( sp_counted_base const & );\r
- sp_counted_base & operator= ( sp_counted_base const & );\r
-\r
- long use_count_; // #shared\r
- long weak_count_; // #weak + (#shared != 0)\r
-\r
- mutable pthread_mutex_t m_;\r
-\r
-public:\r
-\r
- sp_counted_base(): use_count_( 1 ), weak_count_( 1 )\r
- {\r
-// HPUX 10.20 / DCE has a nonstandard pthread_mutex_init\r
-\r
-#if defined(__hpux) && defined(_DECTHREADS_)\r
- pthread_mutex_init( &m_, pthread_mutexattr_default );\r
-#else\r
- pthread_mutex_init( &m_, 0 );\r
-#endif\r
- }\r
-\r
- virtual ~sp_counted_base() // nothrow\r
- {\r
- pthread_mutex_destroy( &m_ );\r
- }\r
-\r
- // dispose() is called when use_count_ drops to zero, to release\r
- // the resources managed by *this.\r
-\r
- virtual void dispose() = 0; // nothrow\r
-\r
- // destroy() is called when weak_count_ drops to zero.\r
-\r
- virtual void destroy() // nothrow\r
- {\r
- delete this;\r
- }\r
-\r
- virtual void * get_deleter( sp_typeinfo const & ti ) = 0;\r
-\r
- void add_ref_copy()\r
- {\r
- pthread_mutex_lock( &m_ );\r
- ++use_count_;\r
- pthread_mutex_unlock( &m_ );\r
- }\r
-\r
- bool add_ref_lock() // true on success\r
- {\r
- pthread_mutex_lock( &m_ );\r
- bool r = use_count_ == 0? false: ( ++use_count_, true );\r
- pthread_mutex_unlock( &m_ );\r
- return r;\r
- }\r
-\r
- void release() // nothrow\r
- {\r
- pthread_mutex_lock( &m_ );\r
- long new_use_count = --use_count_;\r
- pthread_mutex_unlock( &m_ );\r
-\r
- if( new_use_count == 0 )\r
- {\r
- dispose();\r
- weak_release();\r
- }\r
- }\r
-\r
- void weak_add_ref() // nothrow\r
- {\r
- pthread_mutex_lock( &m_ );\r
- ++weak_count_;\r
- pthread_mutex_unlock( &m_ );\r
- }\r
-\r
- void weak_release() // nothrow\r
- {\r
- pthread_mutex_lock( &m_ );\r
- long new_weak_count = --weak_count_;\r
- pthread_mutex_unlock( &m_ );\r
-\r
- if( new_weak_count == 0 )\r
- {\r
- destroy();\r
- }\r
- }\r
-\r
- long use_count() const // nothrow\r
- {\r
- pthread_mutex_lock( &m_ );\r
- long r = use_count_;\r
- pthread_mutex_unlock( &m_ );\r
-\r
- return r;\r
- }\r
-};\r
-\r
-} // namespace detail\r
-\r
-} // namespace boost\r
-\r
-#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED\r
+#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 <boost/detail/sp_typeinfo.hpp>
+#include <pthread.h>
+
+namespace boost
+{
+
+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;
+
+ 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 boost
+
+#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED
projects / features.git / blobdiff