imgtools/imglib/boostlibrary/boost/thread/tss.hpp
author timothy.murphy@nokia.com
Tue, 25 May 2010 12:38:07 +0100
branchfix
changeset 574 819bc4ffb37b
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permissions -rw-r--r--
Release note: Bug 2809 - [Raptor] Intermediate Resource Filenames not unique, rom fails to boot
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#ifndef BOOST_THREAD_TSS_HPP
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#define BOOST_THREAD_TSS_HPP
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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// (C) Copyright 2007-8 Anthony Williams
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#include <boost/thread/detail/config.hpp>
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#include <boost/shared_ptr.hpp>
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#include <boost/thread/detail/thread_heap_alloc.hpp>
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#include <boost/config/abi_prefix.hpp>
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namespace boost
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{
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    namespace detail
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    {
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        struct tss_cleanup_function
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        {
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            virtual ~tss_cleanup_function()
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            {}
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            virtual void operator()(void* data)=0;
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        };
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        BOOST_THREAD_DECL void set_tss_data(void const* key,boost::shared_ptr<tss_cleanup_function> func,void* tss_data,bool cleanup_existing);
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        BOOST_THREAD_DECL void* get_tss_data(void const* key);
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    }
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    template <typename T>
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    class thread_specific_ptr
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    {
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    private:
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        thread_specific_ptr(thread_specific_ptr&);
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        thread_specific_ptr& operator=(thread_specific_ptr&);
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        struct delete_data:
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            detail::tss_cleanup_function
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        {
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            void operator()(void* data)
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            {
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                delete static_cast<T*>(data);
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            }
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        };
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        struct run_custom_cleanup_function:
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            detail::tss_cleanup_function
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        {
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            void (*cleanup_function)(T*);
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            explicit run_custom_cleanup_function(void (*cleanup_function_)(T*)):
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                cleanup_function(cleanup_function_)
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            {}
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            void operator()(void* data)
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            {
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                cleanup_function(static_cast<T*>(data));
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            }
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        };
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        boost::shared_ptr<detail::tss_cleanup_function> cleanup;
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    public:
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        thread_specific_ptr():
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            cleanup(detail::heap_new<delete_data>(),detail::do_heap_delete<delete_data>())
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        {}
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        explicit thread_specific_ptr(void (*func_)(T*))
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        {
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            if(func_)
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            {
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                cleanup.reset(detail::heap_new<run_custom_cleanup_function>(func_),detail::do_heap_delete<run_custom_cleanup_function>());
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            }
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        }
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        ~thread_specific_ptr()
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        {
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            reset();
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        }
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        T* get() const
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        {
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            return static_cast<T*>(detail::get_tss_data(this));
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        }
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        T* operator->() const
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        {
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            return get();
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        }
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        T& operator*() const
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        {
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            return *get();
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        }
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        T* release()
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        {
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            T* const temp=get();
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            detail::set_tss_data(this,boost::shared_ptr<detail::tss_cleanup_function>(),0,false);
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            return temp;
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        }
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        void reset(T* new_value=0)
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        {
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            T* const current_value=get();
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            if(current_value!=new_value)
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            {
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                detail::set_tss_data(this,cleanup,new_value,true);
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            }
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        }
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    };
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}
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#include <boost/config/abi_suffix.hpp>
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#endif