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author | Remko Tronçon <git@el-tramo.be> | 2010-02-11 12:14:00 (GMT) |
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committer | Remko Tronçon <git@el-tramo.be> | 2010-02-11 12:14:00 (GMT) |
commit | 0efa7c32aaf21a29b42b5926cc116007056843be (patch) | |
tree | 882f663a5dd0e65694bf6077b71086dd77fd7ff8 /3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_sync.hpp | |
parent | 1d20eabbc32274b491b4c2bedf73d19933d97bfd (diff) | |
download | swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.zip swift-contrib-0efa7c32aaf21a29b42b5926cc116007056843be.tar.bz2 |
Moved some modules into separate git modules.
Diffstat (limited to '3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_sync.hpp')
m--------- | 3rdParty/Boost | 0 | ||||
-rw-r--r-- | 3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_sync.hpp | 155 |
2 files changed, 0 insertions, 155 deletions
diff --git a/3rdParty/Boost b/3rdParty/Boost new file mode 160000 +Subproject 3bbdbc8cf1996f23d9a366da8bac0f97be6ad79 diff --git a/3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_sync.hpp b/3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_sync.hpp deleted file mode 100644 index 41f654e..0000000 --- a/3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_sync.hpp +++ /dev/null @@ -1,155 +0,0 @@ -#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED -#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED - -// MS compatible compilers support #pragma once - -#if defined(_MSC_VER) && (_MSC_VER >= 1020) -# pragma once -#endif - -// detail/sp_counted_base_sync.hpp - g++ 4.1+ __sync intrinsics -// -// Copyright (c) 2007 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 <limits.h> - -#if defined( __ia64__ ) && defined( __INTEL_COMPILER ) -# include <ia64intrin.h> -#endif - -namespace boost -{ - -namespace detail -{ - -#if INT_MAX >= 2147483647 - -typedef int sp_int32_t; - -#else - -typedef long sp_int32_t; - -#endif - -inline void atomic_increment( sp_int32_t * pw ) -{ - __sync_fetch_and_add( pw, 1 ); -} - -inline sp_int32_t atomic_decrement( sp_int32_t * pw ) -{ - return __sync_fetch_and_add( pw, -1 ); -} - -inline sp_int32_t atomic_conditional_increment( sp_int32_t * pw ) -{ - // long r = *pw; - // if( r != 0 ) ++*pw; - // return r; - - sp_int32_t r = *pw; - - for( ;; ) - { - if( r == 0 ) - { - return r; - } - - sp_int32_t r2 = __sync_val_compare_and_swap( pw, r, r + 1 ); - - if( r2 == r ) - { - return r; - } - else - { - r = r2; - } - } -} - -class sp_counted_base -{ -private: - - sp_counted_base( sp_counted_base const & ); - sp_counted_base & operator= ( sp_counted_base const & ); - - sp_int32_t use_count_; // #shared - sp_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; - - 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_ ) == 1 ) - { - dispose(); - weak_release(); - } - } - - void weak_add_ref() // nothrow - { - atomic_increment( &weak_count_ ); - } - - void weak_release() // nothrow - { - if( atomic_decrement( &weak_count_ ) == 1 ) - { - destroy(); - } - } - - long use_count() const // nothrow - { - return const_cast< sp_int32_t const volatile & >( use_count_ ); - } -}; - -} // namespace detail - -} // namespace boost - -#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_SYNC_HPP_INCLUDED |