Apparatus and method for caching analyzed program information

An apparatus comprising:

• at least one processor;
• a memory coupled to the at least one processor;
• a class processing mechanism residing in the memory and executed by the at least one processor, the class processing mechanism writing a plurality of entries to a cache residing in the memory, each entry including analyzed program information for an object oriented class that has no identifiable corresponding class file when the corresponding object oriented class is loaded, and
• wherein the class processing mechanism determines whether a selected class to be loaded has a corresponding class file, and if so, the class processing mechanism determines whether the corresponding class file includes analyzed program information, and if the corresponding class file includes analyzed program information, the class processing mechanism uses the analyzed program information, and if the corresponding class file does not include analyzed program information, the class processing mechanism generates new analyzed program information corresponding to the selected class and stores the new analyzed program information in the corresponding class file.

An apparatus comprising:

• at least one processor;
• a memory coupled to the at least one processor;
• a plurality of object oriented class files residing in the memory, wherein at least one of the plurality of object oriented class files includes analyzed program information corresponding to the class represented by the class file;
• a cache residing in the memory that contains a plurality of entries, each entry including analyzed program information for an object oriented class that has no identifiable corresponding class file when the corresponding object oriented class is loaded;
• and
• a class processing mechanism residing in the memory and executed by the at least one processor, the class processing mechanism storing at least one entry in the cache that includes analyzed program information that the class processing mechanism generates for an object oriented class that has no identifiable corresponding class file;
• wherein the class processing mechanism determines whether a selected class to be loaded has a corresponding class file, and if so, the class processing mechanism determines whether the corresponding class file includes analyzed program information, and if the corresponding class file includes analyzed program information, the class processing mechanism uses the analyzed program information, and if the corresponding class file does not include analyzed program information, the class processing mechanism generates first analyzed program information corresponding to the selected class and stores the first analyzed program information in the corresponding class file.

A computer-implemented method for processing a selected object oriented class, the method comprising the steps of:

• determining whether the selected class has an identifiable corresponding class file;
• if the selected class has no identifiable corresponding class file, determining whether an entry in a cache exists that includes analyzed program information corresponding to the selected class;
• if an entry in the cache exists that includes analyzed program information corresponding to the selected class, using the analyzed program information;
• and
• if no entry in the cache exists that includes analyzed program information corresponding to the selected class, analyzing program information corresponding to the selected class to generate therefrom first analyzed program information corresponding to the selected class, and writing the first analyzed program information to an entry in the cache.

A computer-implemented method for processing a selected object oriented class, the method comprising the steps of:

• if the selected class has an identifiable corresponding class file, determining whether the corresponding class file includes analyzed program information corresponding to the selected class;
• if the identifiable corresponding class file includes analyzed program information corresponding to the selected class, using the analyzed program information;
• if the identifiable corresponding class file does not include analyzed program information corresponding to the selected class, analyzing program information corresponding to the selected class to generate therefrom first analyzed program information corresponding to the selected class, and including the first analyzed program information as part of the class file;
• if the selected class does not have an identifiable corresponding class file, determining whether a cache entry in a cache exists that includes analyzed program information corresponding to the selected class;
• if a cache entry exists that includes analyzed program information corresponding to the selected class, using the analyzed program information;
• and
• if no cache entry exists that includes analyzed program information corresponding to the selected class, analyzing program information corresponding to the selected class to generate therefrom second analyzed program information corresponding to the selected class, and writing the second analyzed program information corresponding to the selected class to an entry in the cache.

A program product comprising:

• (A) a class processing mechanism that:
• (A1) determines whether a selected class has an identifiable corresponding class file;
• (A2) if the selected class has no identifiable corresponding class file, the class processing mechanism determines whether an entry in a cache exists that includes analyzed program information corresponding to the selected class;
• (A3) if an entry in the cache exists that includes analyzed program information corresponding to the selected class, the class processing mechanism uses the analyzed program information;
• (A4) if no entry in the cache exists that includes analyzed program information corresponding to the selected class, the class processing mechanism analyzes program information corresponding to the selected class to generate therefrom first analyzed program information corresponding to the selected class, the class processing mechanism writing the first analyzed program information to an entry in the cache;
• and
• (B) computer-recordable media bearing the class processing mechanism.