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instance_holder.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\python\instance_holder.hpp
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// Copyright David Abrahams 2002. // 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) #ifndef INSTANCE_HOLDER_DWA2002517_HPP # define INSTANCE_HOLDER_DWA2002517_HPP # include
# include
# include
# include
namespace boost { namespace python { // Base class for all holders struct BOOST_PYTHON_DECL instance_holder : private noncopyable { public: instance_holder(); virtual ~instance_holder(); // return the next holder in a chain instance_holder* next() const; // When the derived holder actually holds by [smart] pointer and // null_ptr_only is set, only report that the type is held when // the pointer is null. This is needed for proper shared_ptr // support, to prevent holding shared_ptrs from being found when // converting from python so that we can use the conversion method // that always holds the Python object. virtual void* holds(type_info, bool null_ptr_only) = 0; void install(PyObject* inst) throw(); // These functions should probably be located elsewhere. // Allocate storage for an object of the given size at the given // offset in the Python instance<> object if bytes are available // there. Otherwise allocate size bytes of heap memory. static void* allocate(PyObject*, std::size_t offset, std::size_t size); // Deallocate storage from the heap if it was not carved out of // the given Python object by allocate(), above. static void deallocate(PyObject*, void* storage) throw(); private: instance_holder* m_next; }; // This macro is needed for implementation of derived holders # define BOOST_PYTHON_UNFORWARD(N,ignored) (typename unforward
::type)(a##N) // // implementation // inline instance_holder* instance_holder::next() const { return m_next; } }} // namespace boost::python #endif // INSTANCE_HOLDER_DWA2002517_HPP
instance_holder.hpp
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