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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_acc_ia64.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_acc_ia64.hpp')
m--------- | 3rdParty/Boost | 0 | ||||
-rw-r--r-- | 3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp | 150 |
2 files changed, 0 insertions, 150 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_acc_ia64.hpp b/3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp deleted file mode 100644 index dffd995..0000000 --- a/3rdParty/Boost/boost/smart_ptr/detail/sp_counted_base_acc_ia64.hpp +++ /dev/null @@ -1,150 +0,0 @@ -#ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED -#define BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED - -// -// detail/sp_counted_base_acc_ia64.hpp - aC++ on HP-UX IA64 -// -// Copyright 2007 Baruch Zilber -// Copyright 2007 Boris Gubenko -// -// 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 -// - -#include <boost/detail/sp_typeinfo.hpp> -#include <machine/sys/inline.h> - -namespace boost -{ - -namespace detail -{ - -inline void atomic_increment( int * pw ) -{ - // ++*pw; - - _Asm_fetchadd(_FASZ_W, _SEM_REL, pw, +1, _LDHINT_NONE); -} - -inline int atomic_decrement( int * pw ) -{ - // return --*pw; - - int r = static_cast<int>(_Asm_fetchadd(_FASZ_W, _SEM_REL, pw, -1, _LDHINT_NONE)); - if (1 == r) - { - _Asm_mf(); - } - - return r - 1; -} - -inline int atomic_conditional_increment( int * pw ) -{ - // if( *pw != 0 ) ++*pw; - // return *pw; - - int v = *pw; - - for (;;) - { - if (0 == v) - { - return 0; - } - - _Asm_mov_to_ar(_AREG_CCV, - v, - (_UP_CALL_FENCE | _UP_SYS_FENCE | _DOWN_CALL_FENCE | _DOWN_SYS_FENCE)); - int r = static_cast<int>(_Asm_cmpxchg(_SZ_W, _SEM_ACQ, pw, v + 1, _LDHINT_NONE)); - if (r == v) - { - return r + 1; - } - - v = r; - } -} - -class sp_counted_base -{ -private: - - sp_counted_base( sp_counted_base const & ); - sp_counted_base & operator= ( sp_counted_base const & ); - - int use_count_; // #shared - int 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_ ) == 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 static_cast<int const volatile &>( use_count_ ); // TODO use ld.acq here - } -}; - -} // namespace detail - -} // namespace boost - -#endif // #ifndef BOOST_SMART_PTR_DETAIL_SP_COUNTED_BASE_ACC_IA64_HPP_INCLUDED |