1 #ifndef BOOST_THREAD_TSS_HPP
2 #define BOOST_THREAD_TSS_HPP
3 // Distributed under the Boost Software License, Version 1.0. (See
4 // accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6 // (C) Copyright 2007-8 Anthony Williams
8 #include <boost/thread/detail/config.hpp>
9 #include <boost/shared_ptr.hpp>
10 #include <boost/thread/detail/thread_heap_alloc.hpp>
12 #include <boost/config/abi_prefix.hpp>
18 struct tss_cleanup_function
20 virtual ~tss_cleanup_function()
23 virtual void operator()(void* data)=0;
26 BOOST_THREAD_DECL void set_tss_data(void const* key,boost::shared_ptr<tss_cleanup_function> func,void* tss_data,bool cleanup_existing);
27 BOOST_THREAD_DECL void* get_tss_data(void const* key);
31 class thread_specific_ptr
34 thread_specific_ptr(thread_specific_ptr&);
35 thread_specific_ptr& operator=(thread_specific_ptr&);
38 detail::tss_cleanup_function
40 void operator()(void* data)
42 delete static_cast<T*>(data);
46 struct run_custom_cleanup_function:
47 detail::tss_cleanup_function
49 void (*cleanup_function)(T*);
51 explicit run_custom_cleanup_function(void (*cleanup_function_)(T*)):
52 cleanup_function(cleanup_function_)
55 void operator()(void* data)
57 cleanup_function(static_cast<T*>(data));
62 boost::shared_ptr<detail::tss_cleanup_function> cleanup;
65 typedef T element_type;
67 thread_specific_ptr():
68 cleanup(detail::heap_new<delete_data>(),detail::do_heap_delete<delete_data>())
70 explicit thread_specific_ptr(void (*func_)(T*))
74 cleanup.reset(detail::heap_new<run_custom_cleanup_function>(func_),detail::do_heap_delete<run_custom_cleanup_function>());
77 ~thread_specific_ptr()
79 detail::set_tss_data(this,boost::shared_ptr<detail::tss_cleanup_function>(),0,true);
84 return static_cast<T*>(detail::get_tss_data(this));
97 detail::set_tss_data(this,boost::shared_ptr<detail::tss_cleanup_function>(),0,false);
100 void reset(T* new_value=0)
102 T* const current_value=get();
103 if(current_value!=new_value)
105 detail::set_tss_data(this,cleanup,new_value,true);
111 #include <boost/config/abi_suffix.hpp>