diff options
Diffstat (limited to 'contrib/src/boost/function/function_base.hpp')
| -rw-r--r-- | contrib/src/boost/function/function_base.hpp | 258 |
1 files changed, 116 insertions, 142 deletions
diff --git a/contrib/src/boost/function/function_base.hpp b/contrib/src/boost/function/function_base.hpp index 35c1995..21a0c0d 100644 --- a/contrib/src/boost/function/function_base.hpp +++ b/contrib/src/boost/function/function_base.hpp @@ -16,9 +16,9 @@ #include <memory> #include <new> #include <boost/config.hpp> -#include <boost/detail/sp_typeinfo.hpp> #include <boost/assert.hpp> #include <boost/integer.hpp> +#include <boost/type_index.hpp> #include <boost/type_traits/has_trivial_copy.hpp> #include <boost/type_traits/has_trivial_destructor.hpp> #include <boost/type_traits/is_const.hpp> @@ -41,28 +41,6 @@ # pragma warning( push ) # pragma warning( disable : 4793 ) // complaint about native code generation # pragma warning( disable : 4127 ) // "conditional expression is constant" -#endif - -// Define BOOST_FUNCTION_STD_NS to the namespace that contains type_info. -#ifdef BOOST_NO_STD_TYPEINFO -// Embedded VC++ does not have type_info in namespace std -# define BOOST_FUNCTION_STD_NS -#else -# define BOOST_FUNCTION_STD_NS std -#endif - -// Borrowed from Boost.Python library: determines the cases where we -// need to use std::type_info::name to compare instead of operator==. -#if defined( BOOST_NO_TYPEID ) -# define BOOST_FUNCTION_COMPARE_TYPE_ID(X,Y) ((X)==(Y)) -#elif defined(__GNUC__) \ - || defined(_AIX) \ - || ( defined(__sgi) && defined(__host_mips)) -# include <cstring> -# define BOOST_FUNCTION_COMPARE_TYPE_ID(X,Y) \ - (std::strcmp((X).name(),(Y).name()) == 0) -# else -# define BOOST_FUNCTION_COMPARE_TYPE_ID(X,Y) ((X)==(Y)) #endif #if defined(__ICL) && __ICL <= 600 || defined(__MWERKS__) && __MWERKS__ < 0x2406 && !defined(BOOST_STRICT_CONFIG) @@ -87,15 +65,16 @@ namespace boost { * object pointers, and a structure that resembles a bound * member function pointer. */ - union function_buffer + union function_buffer_members { // For pointers to function objects - mutable void* obj_ptr; + typedef void* obj_ptr_t; + mutable obj_ptr_t obj_ptr; // For pointers to std::type_info objects struct type_t { // (get_functor_type_tag, check_functor_type_tag). - const detail::sp_typeinfo* type; + const boost::typeindex::type_info* type; // Whether the type is const-qualified. bool const_qualified; @@ -104,7 +83,8 @@ namespace boost { } type; // For function pointers of all kinds - mutable void (*func_ptr)(); + typedef void (*func_ptr_t)(); + mutable func_ptr_t func_ptr; // For bound member pointers struct bound_memfunc_ptr_t { @@ -119,9 +99,15 @@ namespace boost { bool is_const_qualified; bool is_volatile_qualified; } obj_ref; + }; + + union function_buffer + { + // Type-specific union members + mutable function_buffer_members members; // To relax aliasing constraints - mutable char data; + mutable char data[sizeof(function_buffer_members)]; }; /** @@ -188,45 +174,42 @@ namespace boost { struct reference_manager { static inline void - manage(const function_buffer& in_buffer, function_buffer& out_buffer, + manage(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op) { switch (op) { - case clone_functor_tag: - out_buffer.obj_ref = in_buffer.obj_ref; + case clone_functor_tag: + out_buffer.members.obj_ref = in_buffer.members.obj_ref; return; case move_functor_tag: - out_buffer.obj_ref = in_buffer.obj_ref; - in_buffer.obj_ref.obj_ptr = 0; + out_buffer.members.obj_ref = in_buffer.members.obj_ref; + in_buffer.members.obj_ref.obj_ptr = 0; return; case destroy_functor_tag: - out_buffer.obj_ref.obj_ptr = 0; + out_buffer.members.obj_ref.obj_ptr = 0; return; case check_functor_type_tag: { - const detail::sp_typeinfo& check_type - = *out_buffer.type.type; - // Check whether we have the same type. We can add // cv-qualifiers, but we can't take them away. - if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(F)) - && (!in_buffer.obj_ref.is_const_qualified - || out_buffer.type.const_qualified) - && (!in_buffer.obj_ref.is_volatile_qualified - || out_buffer.type.volatile_qualified)) - out_buffer.obj_ptr = in_buffer.obj_ref.obj_ptr; + if (*out_buffer.members.type.type == boost::typeindex::type_id<F>() + && (!in_buffer.members.obj_ref.is_const_qualified + || out_buffer.members.type.const_qualified) + && (!in_buffer.members.obj_ref.is_volatile_qualified + || out_buffer.members.type.volatile_qualified)) + out_buffer.members.obj_ptr = in_buffer.members.obj_ref.obj_ptr; else - out_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = 0; } return; case get_functor_type_tag: - out_buffer.type.type = &BOOST_SP_TYPEID(F); - out_buffer.type.const_qualified = in_buffer.obj_ref.is_const_qualified; - out_buffer.type.volatile_qualified = in_buffer.obj_ref.is_volatile_qualified; + out_buffer.members.type.type = &boost::typeindex::type_id<F>().type_info(); + out_buffer.members.type.const_qualified = in_buffer.members.obj_ref.is_const_qualified; + out_buffer.members.type.volatile_qualified = in_buffer.members.obj_ref.is_volatile_qualified; return; } } @@ -240,9 +223,9 @@ namespace boost { struct function_allows_small_object_optimization { BOOST_STATIC_CONSTANT - (bool, + (bool, value = ((sizeof(F) <= sizeof(function_buffer) && - (alignment_of<function_buffer>::value + (alignment_of<function_buffer>::value % alignment_of<F>::value == 0)))); }; @@ -254,7 +237,7 @@ namespace boost { A(a) { } - + functor_wrapper(const functor_wrapper& f) : F(static_cast<const F&>(f)), A(static_cast<const A&>(f)) @@ -273,61 +256,57 @@ namespace boost { // Function pointers static inline void - manage_ptr(const function_buffer& in_buffer, function_buffer& out_buffer, + manage_ptr(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op) { if (op == clone_functor_tag) - out_buffer.func_ptr = in_buffer.func_ptr; + out_buffer.members.func_ptr = in_buffer.members.func_ptr; else if (op == move_functor_tag) { - out_buffer.func_ptr = in_buffer.func_ptr; - in_buffer.func_ptr = 0; + out_buffer.members.func_ptr = in_buffer.members.func_ptr; + in_buffer.members.func_ptr = 0; } else if (op == destroy_functor_tag) - out_buffer.func_ptr = 0; + out_buffer.members.func_ptr = 0; else if (op == check_functor_type_tag) { - const boost::detail::sp_typeinfo& check_type - = *out_buffer.type.type; - if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor))) - out_buffer.obj_ptr = &in_buffer.func_ptr; + if (*out_buffer.members.type.type == boost::typeindex::type_id<Functor>()) + out_buffer.members.obj_ptr = &in_buffer.members.func_ptr; else - out_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = 0; } else /* op == get_functor_type_tag */ { - out_buffer.type.type = &BOOST_SP_TYPEID(Functor); - out_buffer.type.const_qualified = false; - out_buffer.type.volatile_qualified = false; + out_buffer.members.type.type = &boost::typeindex::type_id<Functor>().type_info(); + out_buffer.members.type.const_qualified = false; + out_buffer.members.type.volatile_qualified = false; } } // Function objects that fit in the small-object buffer. static inline void - manage_small(const function_buffer& in_buffer, function_buffer& out_buffer, + manage_small(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op) { if (op == clone_functor_tag || op == move_functor_tag) { - const functor_type* in_functor = - reinterpret_cast<const functor_type*>(&in_buffer.data); - new (reinterpret_cast<void*>(&out_buffer.data)) functor_type(*in_functor); + const functor_type* in_functor = + reinterpret_cast<const functor_type*>(in_buffer.data); + new (reinterpret_cast<void*>(out_buffer.data)) functor_type(*in_functor); if (op == move_functor_tag) { - functor_type* f = reinterpret_cast<functor_type*>(&in_buffer.data); + functor_type* f = reinterpret_cast<functor_type*>(in_buffer.data); (void)f; // suppress warning about the value of f not being used (MSVC) f->~Functor(); } } else if (op == destroy_functor_tag) { // Some compilers (Borland, vc6, ...) are unhappy with ~functor_type. - functor_type* f = reinterpret_cast<functor_type*>(&out_buffer.data); + functor_type* f = reinterpret_cast<functor_type*>(out_buffer.data); (void)f; // suppress warning about the value of f not being used (MSVC) f->~Functor(); } else if (op == check_functor_type_tag) { - const detail::sp_typeinfo& check_type - = *out_buffer.type.type; - if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor))) - out_buffer.obj_ptr = &in_buffer.data; + if (*out_buffer.members.type.type == boost::typeindex::type_id<Functor>()) + out_buffer.members.obj_ptr = in_buffer.data; else - out_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = 0; } else /* op == get_functor_type_tag */ { - out_buffer.type.type = &BOOST_SP_TYPEID(Functor); - out_buffer.type.const_qualified = false; - out_buffer.type.volatile_qualified = false; + out_buffer.members.type.type = &boost::typeindex::type_id<Functor>().type_info(); + out_buffer.members.type.const_qualified = false; + out_buffer.members.type.volatile_qualified = false; } } }; @@ -340,7 +319,7 @@ namespace boost { // Function pointers static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, function_ptr_tag) { functor_manager_common<Functor>::manage_ptr(in_buffer,out_buffer,op); @@ -348,15 +327,15 @@ namespace boost { // Function objects that fit in the small-object buffer. static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, mpl::true_) { functor_manager_common<Functor>::manage_small(in_buffer,out_buffer,op); } - + // Function objects that require heap allocation static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, mpl::false_) { if (op == clone_functor_tag) { @@ -366,29 +345,27 @@ namespace boost { // jewillco: Changing this to static_cast because GCC 2.95.3 is // obsolete. const functor_type* f = - static_cast<const functor_type*>(in_buffer.obj_ptr); + static_cast<const functor_type*>(in_buffer.members.obj_ptr); functor_type* new_f = new functor_type(*f); - out_buffer.obj_ptr = new_f; + out_buffer.members.obj_ptr = new_f; } else if (op == move_functor_tag) { - out_buffer.obj_ptr = in_buffer.obj_ptr; - in_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = in_buffer.members.obj_ptr; + in_buffer.members.obj_ptr = 0; } else if (op == destroy_functor_tag) { /* Cast from the void pointer to the functor pointer type */ functor_type* f = - static_cast<functor_type*>(out_buffer.obj_ptr); + static_cast<functor_type*>(out_buffer.members.obj_ptr); delete f; - out_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = 0; } else if (op == check_functor_type_tag) { - const detail::sp_typeinfo& check_type - = *out_buffer.type.type; - if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor))) - out_buffer.obj_ptr = in_buffer.obj_ptr; + if (*out_buffer.members.type.type == boost::typeindex::type_id<Functor>()) + out_buffer.members.obj_ptr = in_buffer.members.obj_ptr; else - out_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = 0; } else /* op == get_functor_type_tag */ { - out_buffer.type.type = &BOOST_SP_TYPEID(Functor); - out_buffer.type.const_qualified = false; - out_buffer.type.volatile_qualified = false; + out_buffer.members.type.type = &boost::typeindex::type_id<Functor>().type_info(); + out_buffer.members.type.const_qualified = false; + out_buffer.members.type.volatile_qualified = false; } } @@ -396,7 +373,7 @@ namespace boost { // object can use the small-object optimization buffer or // whether we need to allocate it on the heap. static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, function_obj_tag) { manager(in_buffer, out_buffer, op, @@ -405,7 +382,7 @@ namespace boost { // For member pointers, we use the small-object optimization buffer. static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, member_ptr_tag) { manager(in_buffer, out_buffer, op, mpl::true_()); @@ -415,15 +392,15 @@ namespace boost { /* Dispatch to an appropriate manager based on whether we have a function pointer or a function object pointer. */ static inline void - manage(const function_buffer& in_buffer, function_buffer& out_buffer, + manage(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op) { typedef typename get_function_tag<functor_type>::type tag_type; switch (op) { case get_functor_type_tag: - out_buffer.type.type = &BOOST_SP_TYPEID(functor_type); - out_buffer.type.const_qualified = false; - out_buffer.type.volatile_qualified = false; + out_buffer.members.type.type = &boost::typeindex::type_id<functor_type>().type_info(); + out_buffer.members.type.const_qualified = false; + out_buffer.members.type.volatile_qualified = false; return; default: @@ -441,7 +418,7 @@ namespace boost { // Function pointers static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, function_ptr_tag) { functor_manager_common<Functor>::manage_ptr(in_buffer,out_buffer,op); @@ -449,15 +426,15 @@ namespace boost { // Function objects that fit in the small-object buffer. static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, mpl::true_) { functor_manager_common<Functor>::manage_small(in_buffer,out_buffer,op); } - + // Function objects that require heap allocation static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, mpl::false_) { typedef functor_wrapper<Functor,Allocator> functor_wrapper_type; @@ -470,36 +447,34 @@ namespace boost { // GCC 2.95.3 gets the CV qualifiers wrong here, so we // can't do the static_cast that we should do. const functor_wrapper_type* f = - static_cast<const functor_wrapper_type*>(in_buffer.obj_ptr); + static_cast<const functor_wrapper_type*>(in_buffer.members.obj_ptr); wrapper_allocator_type wrapper_allocator(static_cast<Allocator const &>(*f)); wrapper_allocator_pointer_type copy = wrapper_allocator.allocate(1); wrapper_allocator.construct(copy, *f); // Get back to the original pointer type functor_wrapper_type* new_f = static_cast<functor_wrapper_type*>(copy); - out_buffer.obj_ptr = new_f; + out_buffer.members.obj_ptr = new_f; } else if (op == move_functor_tag) { - out_buffer.obj_ptr = in_buffer.obj_ptr; - in_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = in_buffer.members.obj_ptr; + in_buffer.members.obj_ptr = 0; } else if (op == destroy_functor_tag) { /* Cast from the void pointer to the functor_wrapper_type */ functor_wrapper_type* victim = - static_cast<functor_wrapper_type*>(in_buffer.obj_ptr); + static_cast<functor_wrapper_type*>(in_buffer.members.obj_ptr); wrapper_allocator_type wrapper_allocator(static_cast<Allocator const &>(*victim)); wrapper_allocator.destroy(victim); wrapper_allocator.deallocate(victim,1); - out_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = 0; } else if (op == check_functor_type_tag) { - const detail::sp_typeinfo& check_type - = *out_buffer.type.type; - if (BOOST_FUNCTION_COMPARE_TYPE_ID(check_type, BOOST_SP_TYPEID(Functor))) - out_buffer.obj_ptr = in_buffer.obj_ptr; + if (*out_buffer.members.type.type == boost::typeindex::type_id<Functor>()) + out_buffer.members.obj_ptr = in_buffer.members.obj_ptr; else - out_buffer.obj_ptr = 0; + out_buffer.members.obj_ptr = 0; } else /* op == get_functor_type_tag */ { - out_buffer.type.type = &BOOST_SP_TYPEID(Functor); - out_buffer.type.const_qualified = false; - out_buffer.type.volatile_qualified = false; + out_buffer.members.type.type = &boost::typeindex::type_id<Functor>().type_info(); + out_buffer.members.type.const_qualified = false; + out_buffer.members.type.volatile_qualified = false; } } @@ -507,7 +482,7 @@ namespace boost { // object can use the small-object optimization buffer or // whether we need to allocate it on the heap. static inline void - manager(const function_buffer& in_buffer, function_buffer& out_buffer, + manager(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op, function_obj_tag) { manager(in_buffer, out_buffer, op, @@ -518,15 +493,15 @@ namespace boost { /* Dispatch to an appropriate manager based on whether we have a function pointer or a function object pointer. */ static inline void - manage(const function_buffer& in_buffer, function_buffer& out_buffer, + manage(const function_buffer& in_buffer, function_buffer& out_buffer, functor_manager_operation_type op) { typedef typename get_function_tag<functor_type>::type tag_type; switch (op) { case get_functor_type_tag: - out_buffer.type.type = &BOOST_SP_TYPEID(functor_type); - out_buffer.type.const_qualified = false; - out_buffer.type.volatile_qualified = false; + out_buffer.members.type.type = &boost::typeindex::type_id<functor_type>().type_info(); + out_buffer.members.type.const_qualified = false; + out_buffer.members.type.volatile_qualified = false; return; default: @@ -604,8 +579,8 @@ namespace boost { */ struct vtable_base { - void (*manager)(const function_buffer& in_buffer, - function_buffer& out_buffer, + void (*manager)(const function_buffer& in_buffer, + function_buffer& out_buffer, functor_manager_operation_type op); }; } // end namespace function @@ -625,15 +600,15 @@ public: /** Determine if the function is empty (i.e., has no target). */ bool empty() const { return !vtable; } - /** Retrieve the type of the stored function object, or BOOST_SP_TYPEID(void) + /** Retrieve the type of the stored function object, or type_id<void>() if this is empty. */ - const detail::sp_typeinfo& target_type() const + const boost::typeindex::type_info& target_type() const { - if (!vtable) return BOOST_SP_TYPEID(void); + if (!vtable) return boost::typeindex::type_id<void>().type_info(); detail::function::function_buffer type; get_vtable()->manager(functor, type, detail::function::get_functor_type_tag); - return *type.type.type; + return *type.members.type.type; } template<typename Functor> @@ -642,12 +617,12 @@ public: if (!vtable) return 0; detail::function::function_buffer type_result; - type_result.type.type = &BOOST_SP_TYPEID(Functor); - type_result.type.const_qualified = is_const<Functor>::value; - type_result.type.volatile_qualified = is_volatile<Functor>::value; - get_vtable()->manager(functor, type_result, + type_result.members.type.type = &boost::typeindex::type_id<Functor>().type_info(); + type_result.members.type.const_qualified = is_const<Functor>::value; + type_result.members.type.volatile_qualified = is_volatile<Functor>::value; + get_vtable()->manager(functor, type_result, detail::function::check_functor_type_tag); - return static_cast<Functor*>(type_result.obj_ptr); + return static_cast<Functor*>(type_result.members.obj_ptr); } template<typename Functor> @@ -656,14 +631,14 @@ public: if (!vtable) return 0; detail::function::function_buffer type_result; - type_result.type.type = &BOOST_SP_TYPEID(Functor); - type_result.type.const_qualified = true; - type_result.type.volatile_qualified = is_volatile<Functor>::value; - get_vtable()->manager(functor, type_result, + type_result.members.type.type = &boost::typeindex::type_id<Functor>().type_info(); + type_result.members.type.const_qualified = true; + type_result.members.type.volatile_qualified = is_volatile<Functor>::value; + get_vtable()->manager(functor, type_result, detail::function::check_functor_type_tag); // GCC 2.95.3 gets the CV qualifiers wrong here, so we // can't do the static_cast that we should do. - return static_cast<const Functor*>(type_result.obj_ptr); + return static_cast<const Functor*>(type_result.members.obj_ptr); } template<typename F> @@ -883,10 +858,9 @@ namespace detail { } // end namespace boost #undef BOOST_FUNCTION_ENABLE_IF_NOT_INTEGRAL -#undef BOOST_FUNCTION_COMPARE_TYPE_ID #if defined(BOOST_MSVC) # pragma warning( pop ) -#endif +#endif #endif // BOOST_FUNCTION_BASE_HEADER |