11.8. Memory managementΒΆ

Memory management is critical for Dynamic Types, because every dynamic type and dynamic data is managed with pointers. Every object stored inside of a dynamic object is managed by its owner, and users must delete every object they create using the factories.

DynamicTypeBuilder* pBuilder = DynamicTypeBuilderFactory::get_instance()->create_uint32_builder();
DynamicType_ptr pType = DynamicTypeBuilderFactory::get_instance()->create_int32_type();
DynamicData* pData = DynamicDataFactory::get_instance()->create_data(pType);

DynamicTypeBuilderFactory::get_instance()->delete_builder(pBuilder);
DynamicDataFactory::get_instance()->delete_data(pData);

To ease this management, the library defines smart pointers (DynamicTypeBuilder_ptr, DynamicType and DynamicData_ptr) that will delete the objects automatically when they are not needed anymore. DynamicType will always be returned as DynamicType_ptr because there is no internal management of its memory.

DynamicTypeBuilder_ptr pBuilder = DynamicTypeBuilderFactory::get_instance()->create_uint32_builder();
DynamicType_ptr pType = DynamicTypeBuilderFactory::get_instance()->create_int32_type();
DynamicData_ptr pData(DynamicDataFactory::get_instance()->create_data(pType));

The only case where these smart pointers cannot be used is with functions loan_value and return_loaned_value. Raw pointers should be used with these functions, because the returned value should not be deleted, and using a smart pointer with them will cause a crash.