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Inside Macintosh: Memory /

Chapter 3 - Virtual Memory Manager / Virtual Memory Manager Reference

Data Structures

Translation Table

The GetPhysical function uses a translation table to hold information about a logical address range and its corresponding physical addresses. A translation table is defined by the data type LogicalToPhysicalTable.

TYPE LogicalToPhysicalTable =
RECORD
   logical:    MemoryBlock;         {a logical block}
   physical:   ARRAY[0..defaultPhysicalEntryCount-1] OF
                      MemoryBlock;  {equivalent physical blocks}
END;

Field Description

logical

A logical block of memory whose corresponding physical blocks are to be determined.

physical

A physical translation table that identifies the blocks of physical memory corresponding to the logical block identified in the logical field.