dlib C++ Library - memory_manager_global_kernel_1.h

    // Copyright (C) 2006  Davis E. King (davisking@users.sourceforge.net)
    // License: Boost Software License   See LICENSE.txt for the full license.
    #ifndef DLIB_MEMORY_MANAGER_GLOBAl_1_
    #define DLIB_MEMORY_MANAGER_GLOBAl_1_

    #include "../algs.h"
    #include "../memory_manager/memory_manager_kernel_abstract.h"
    #include "memory_manager_global_kernel_abstract.h"

    namespace dlib
    {
        template <
            typename T,
            typename factory
            >
        class memory_manager_global_kernel_1
        {
            /*!
                INITIAL VALUE
                    - *global_mm == get_global_memory_manager()

                CONVENTION
                    - global_mm->get_number_of_allocations() == get_number_of_allocations()
                    - *global_mm == get_global_memory_manager()
            !*/

            public:

                typedef typename factory::template return_type<T>::type mm_global_type;

                typedef T type;

                template <typename U>
                struct rebind {
                    typedef memory_manager_global_kernel_1<U,factory> other;
                };

                memory_manager_global_kernel_1(
                ) :
                    global_mm(factory::template get_instance<T>())
                {}

                virtual ~memory_manager_global_kernel_1(
                )  {}

                unsigned long get_number_of_allocations (
                ) const { return global_mm->get_number_of_allocations(); }

                mm_global_type& get_global_memory_manager (
                ) { return *global_mm; }

                T* allocate (
                )
                {
                    return global_mm->allocate();
                }

                void deallocate (
                    T* item
                )
                {
                    global_mm->deallocate(item);
                }

                T* allocate_array (
                    unsigned long size
                )
                {
                    return global_mm->allocate_array(size);
                }

                void deallocate_array (
                    T* item
                )
                {
                    global_mm->deallocate_array(item);
                }

                void swap (
                    memory_manager_global_kernel_1& item
                )
                {
                    exchange(item.global_mm, global_mm);
                }

            private:

                mm_global_type* global_mm;

                // restricted functions
                memory_manager_global_kernel_1(memory_manager_global_kernel_1&);        // copy constructor
                memory_manager_global_kernel_1& operator=(memory_manager_global_kernel_1&);    // assignment operator
        };

        template <
            typename T,
            typename factory
            >
        inline void swap (
            memory_manager_global_kernel_1<T,factory>& a,
            memory_manager_global_kernel_1<T,factory>& b
        ) { a.swap(b); }
        /*!
            provides a global swap function
        !*/

    }

    #endif // DLIB_MEMORY_MANAGER_GLOBAl_1_