aboutsummaryrefslogtreecommitdiff
path: root/cutl/details/boost/smart_ptr/detail/sp_counted_base_aix.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'cutl/details/boost/smart_ptr/detail/sp_counted_base_aix.hpp')
-rw-r--r--cutl/details/boost/smart_ptr/detail/sp_counted_base_aix.hpp143
1 files changed, 0 insertions, 143 deletions
diff --git a/cutl/details/boost/smart_ptr/detail/sp_counted_base_aix.hpp b/cutl/details/boost/smart_ptr/detail/sp_counted_base_aix.hpp
deleted file mode 100644
index 6b66a7b..0000000
--- a/cutl/details/boost/smart_ptr/detail/sp_counted_base_aix.hpp
+++ /dev/null
@@ -1,143 +0,0 @@
-#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_AIX_HPP_INCLUDED
-#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_AIX_HPP_INCLUDED
-
-//
-// detail/sp_counted_base_aix.hpp
-// based on: detail/sp_counted_base_w32.hpp
-//
-// Copyright (c) 2001, 2002, 2003 Peter Dimov and Multi Media Ltd.
-// Copyright 2004-2005 Peter Dimov
-// Copyright 2006 Michael van der Westhuizen
-//
-// 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)
-//
-//
-// Lock-free algorithm by Alexander Terekhov
-//
-// Thanks to Ben Hitchings for the #weak + (#shared != 0)
-// formulation
-//
-
-#include <cutl/details/boost/detail/sp_typeinfo.hpp>
-#include <builtins.h>
-#include <sys/atomic_op.h>
-
-namespace cutl_details_boost
-{
-
-namespace detail
-{
-
-inline void atomic_increment( int32_t* pw )
-{
- // ++*pw;
-
- fetch_and_add( pw, 1 );
-}
-
-inline int32_t atomic_decrement( int32_t * pw )
-{
- // return --*pw;
-
- int32_t originalValue;
-
- __lwsync();
- originalValue = fetch_and_add( pw, -1 );
- __isync();
-
- return (originalValue - 1);
-}
-
-inline int32_t atomic_conditional_increment( int32_t * pw )
-{
- // if( *pw != 0 ) ++*pw;
- // return *pw;
-
- int32_t tmp = fetch_and_add( pw, 0 );
- for( ;; )
- {
- if( tmp == 0 ) return 0;
- if( compare_and_swap( pw, &tmp, tmp + 1 ) ) return (tmp + 1);
- }
-}
-
-class sp_counted_base
-{
-private:
-
- sp_counted_base( sp_counted_base const & );
- sp_counted_base & operator= ( sp_counted_base const & );
-
- int32_t use_count_; // #shared
- int32_t weak_count_; // #weak + (#shared != 0)
-
-public:
-
- sp_counted_base(): use_count_( 1 ), weak_count_( 1 )
- {
- }
-
- virtual ~sp_counted_base() // nothrow
- {
- }
-
- // 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()
- {
- atomic_increment( &use_count_ );
- }
-
- bool add_ref_lock() // true on success
- {
- return atomic_conditional_increment( &use_count_ ) != 0;
- }
-
- void release() // nothrow
- {
- if( atomic_decrement( &use_count_ ) == 0 )
- {
- dispose();
- weak_release();
- }
- }
-
- void weak_add_ref() // nothrow
- {
- atomic_increment( &weak_count_ );
- }
-
- void weak_release() // nothrow
- {
- if( atomic_decrement( &weak_count_ ) == 0 )
- {
- destroy();
- }
- }
-
- long use_count() const // nothrow
- {
- return fetch_and_add( const_cast<int32_t*>(&use_count_), 0 );
- }
-};
-
-} // namespace detail
-
-} // namespace cutl_details_boost
-
-#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_AIX_HPP_INCLUDED