From: hartmann Date: Thu, 9 Feb 2006 08:11:29 +0000 (+0000) Subject: Required by MIPSpro. X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=efc69eed2fd129fb905d0c6c6d0f0245ee90faf5;p=dealii-svn.git Required by MIPSpro. git-svn-id: https://svn.dealii.org/trunk@12278 0785d39b-7218-0410-832d-ea1e28bc413d --- diff --git a/deal.II/contrib/boost/include/boost/detail/sp_counted_base_pt.hpp b/deal.II/contrib/boost/include/boost/detail/sp_counted_base_pt.hpp new file mode 100644 index 0000000000..191064f59f --- /dev/null +++ b/deal.II/contrib/boost/include/boost/detail/sp_counted_base_pt.hpp @@ -0,0 +1,135 @@ +#ifndef BOOST_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED +#define BOOST_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 +#include + +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( std::type_info 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_DETAIL_SP_COUNTED_BASE_PT_HPP_INCLUDED