Efficient OASIS.MASK Reader

摘要

OASIS (P39) specification imposes few restrictions on file structure and does not enforce the use of standard properties and features such as strict mode. As a natural consequence, P39 readers must be general enough to cover all possible types of input, and this leads to inefficiencies. In contrast, OASIS.MASK (P44) specification, which is a formal subset of P39, has restrictions on file structure and enforces the usage of properties, both standard and user mandatory ones. In addition to this, strict mode is mandatory and new features like Localization are added.rnEven though it is possible to read a P44 file using general P39 readers, such readers do not take advantage of the special P44 characteristics and therefore remain inefficient, especially for applications needing fast random access to arbitrary extents of data within the file. In this paper we explain the concepts that should be considered in the design of an efficient P44 reader and present Synopsys CATS® implementation. Experimental results comparing CATS® P44 specific reader against standard P39 readers show significant performance benefits.