Shadow mechanism having masterblocks for a modifiable object oriented system

An information handling system comprising

• a processor,
• a read only memory coupled to the processor, the read only memory storing a first version of a data element, the first version of the data element including a plurality of objects,
• a random access memory coupled to the processor, the random access memory storing a second version of the data element, the second version of the data element including a plurality of objects, and
• a shadow system, the shadow system transparently determining which of the first and second versions of the data elements the processor accesses, the shadowy system including a plurality of masterblocks, each masterblock for accessing objects of the first version of the data element, the plurality of masterblocks being accessed via a masterblock list of cluster pointer addresses, each masterblock including a list of address offsets, the list of address offsets starting at a cluster pointer address, and wherein an object number provides an index to the cluster pointer address.

An information handling system comprising

• a processor,
• a read only memory coupled to the processor, the read only memory storing a first version of a data element, the first version of the data element including a plurality of objects,
• a random access memory coupled to the processor, the random access memory storing a second version of the data element, the second version of the data element including a plurality of objects, and
• a shadow system, the shadow system transparently determining which of the first and second versions of the data elements the processor accesses, the shadow system including
• a first masterblock for accessing objects of the first version of the data element, and
• a second masterblock for accessing objects within the second version of data elements, wherein
• the second version of the data element has a beginning location, and the second masterblock includes a list of pairs, each pair including an object identifier and an offset of a location of the object from the beginning location of the second version of the data element.

An information handling system comprising

• a processor,
• a read only memory coupled to the processor, the read only memory storing a first version of a data element, the first version of the data element including a plurality of objects,
• a random access memory coupled to the processor, the random access memory storing a second version of the data element, the second version of the data element including a plurality of objects, and
• a shadow system, the shadow system transparently determining which of the first and second versions of the data elements the processor accesses, the shadow system including
• a dense masterblock for accessing objects of the first version of the data element, and
• a sparse masterblock for accessing objects within the second version of data elements, wherein
• the dense masterblock includes a list of address offsets, and
• the list of address offsets starts at a cluster pointer address.

An information handling system comprising

• a processor,
• a read only memory coupled to the processor, the read only memory storing a first version of a data element, the first version of the data element including a plurality of objects,
• a random access memory coupled to the processor, the random access memory storing a second version of the data element, the second version of the data element including a plurality of objects, and
• a shadow system, the shadow system transparently determining which of the first and second versions of the data elements the processor accesses, the shadow system including
• a dense masterblock for accessing objects of the first version of the data element, and
• a sparse masterblock for accessing objects within the second version of data elements, wherein
• the second version of data elements has a beginning location, and
• the sparse masterblock includes a list of pairs, each pair including an object identifier and an offset of a location of the object from the beginning location of the second version of data elements.