life_cycle.h

/*
 *  OGF/Graphite: Geometry and Graphics Programming Library + Utilities
 *  Copyright (C) 2000 Bruno Levy
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 *  If you modify this software, you should include a notice giving the
 *  name of the person performing the modification, the date of modification,
 *  and the reason for such modification.
 *
 *  Contact: Bruno Levy
 *
 *     levy@loria.fr
 *
 *     ISA Project
 *     LORIA, INRIA Lorraine, 
 *     Campus Scientifique, BP 239
 *     54506 VANDOEUVRE LES NANCY CEDEX 
 *     FRANCE
 *
 *  Note that the GNU General Public License does not permit incorporating
 *  the Software into proprietary programs. 
 */
 
#ifndef H_OGF_BASIC_ERTTI_SERIALIZER_H
#define H_OGF_BASIC_ERTTI_SERIALIZER_H
 
#include <OGF/gom/common/common.h>
#include <geogram/basic/memory.h>
#include <geogram/basic/counted.h>
 
#ifdef GEO_COMPILER_CLANG
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wcast-align"
#endif
 
namespace OGF {
 
    class GOM_API LifeCycle : public Counted {
      public:
 
        LifeCycle(size_t object_size, bool is_pod=false) :
           object_size_(object_size), is_pod_(is_pod) {
        }
 
        virtual ~LifeCycle();
 
        size_t object_size() const {
            return object_size_;
        }
 
        bool is_pod() const {
            return is_pod_;
        }
        
        virtual void construct(Memory::pointer address) = 0;
 
        virtual void copy_construct(Memory::pointer lhs, Memory::pointer rhs) = 0;
 
        virtual void destroy(Memory::pointer address) = 0;
 
        virtual void assign(Memory::pointer lhs, Memory::pointer rhs) = 0;      
 
        virtual void construct_array(Memory::pointer address, index_t nb) = 0;
 
        virtual void copy_construct_array(Memory::pointer lhs, Memory::pointer rhs, index_t nb) = 0;
 
        virtual void destroy_array(Memory::pointer address, index_t nb) = 0;
 
        virtual void assign_array(Memory::pointer lhs, Memory::pointer rhs, index_t nb) = 0;    
 
        virtual Memory::pointer new_object() = 0;
 
        virtual Memory::pointer new_object(Memory::pointer rhs) = 0;
        
        virtual void delete_object(Memory::pointer address) = 0;
 
        virtual Memory::pointer new_array(index_t nb) = 0;
 
        virtual void delete_array(Memory::pointer address) = 0;
        
      private:
        size_t object_size_;
        bool is_pod_;
    };
 
    typedef SmartPointer<LifeCycle> LifeCycle_var;
 
    /*************************************************************************/
    
    template <class T> class GenericLifeCycle : public LifeCycle {
      public:
 
        GenericLifeCycle() : LifeCycle(sizeof(T), std::is_pod<T>::value) {
        }
 
        void construct(Memory::pointer address) override {
            new(address)T;
        }
 
        void copy_construct(Memory::pointer lhs, Memory::pointer rhs) override {
            new(lhs)T(*(T*)rhs);
        }
        
        void destroy(Memory::pointer address) override {
            geo_argused(address); // Silences a MSVC warning.
            ((T*)address)->~T();
        }
 
        void assign(Memory::pointer lhs, Memory::pointer rhs) override {
            *(T*)lhs=*(T*)rhs;
        }       
 
        void construct_array(Memory::pointer address, index_t nb) override {
            T* array = (T*)address;
            for(index_t i=0; i<nb; ++i) {
                new(&array[i])T;
            }
        }
 
        void copy_construct_array(
            Memory::pointer lhs, Memory::pointer rhs, index_t nb
        ) override {
            T* lhs_array = (T*)lhs;
            T* rhs_array = (T*)rhs;         
            for(index_t i=0; i<nb; ++i) {
                new(&lhs_array[i])T(rhs_array[i]);
            }
        }
 
        void destroy_array(Memory::pointer address, index_t nb) override {
            T* array = (T*)address;
            geo_argused(array); // Silences a MSVC warning.
            for(index_t i=0; i<nb; ++i) {
                array[i].~T();
            }
        }
 
        void assign_array(
            Memory::pointer lhs, Memory::pointer rhs, index_t nb
        ) override {
            T* lhs_array = (T*)lhs;
            T* rhs_array = (T*)rhs;         
            for(index_t i=0; i<nb; ++i) {
                lhs_array[i] = rhs_array[i];
            }
        }       
 
        Memory::pointer new_object() override {
            return Memory::pointer(new T);
        }
 
        Memory::pointer new_object(Memory::pointer rhs) override {
            return Memory::pointer(new T(*(T*)rhs));
        }
        
        void delete_object(Memory::pointer address) override {
            delete((T*)address);
        }
 
        Memory::pointer new_array(index_t nb) override {
            return Memory::pointer(new T[nb]);      
        }
 
        void delete_array(Memory::pointer address) override {
            delete[]((T*)address);
        }
        
    };
    
}
 
#ifdef GEO_COMPILER_CLANG
#pragma GCC diagnostic pop
#endif
 
#endif