Hewlett-packard Development Company, L.P.

Hewlett-packard Company

Joseph A Coha

David Isaiah Seidman

Piotr Findeisen

Ashish G Karkare

Timothy Chester O'Konski

Yanhua Li

Richard R Rupp

Gary A Coutant

One embodiment relates to a method for identifying sources of memory retention in an executing application. A size of a set of objects is tracked over multiple periods. A period is determined to be a growth period if the size for the set of objects increases above a previous maximum size, and the number of growth periods is counted. The set of objects is flagged as having potential undesired object retention (a memory leak) if the number of growth periods is greater than a threshold number. Other embodiments are also disclosed.

Identifying sources of memory retention

A method for optimization of memory usage for a computer program. Memory usage data is received wherein the memory usage data comprises timing information. A graphical representation of the memory usage data is generated. At least one heap parameter is received. A memory usage simulation is performed based on the memory usage data and the heap parameter.

Method for optimization of memory usage for a computer program

A compiler-linker software system translates a source code file into a machine executable code file. The compiler converts source code files to corresponding object code files. The linker converts the object code files to machine executable code files and tables required for execution. For each procedure, the linker derives one or more tables and one of the tables is a line number table. The line number table identifies the offset of a block of machine executable codes in the procedure with their corresponding source code line number. The construction of the line number table at link-time, not at compile-time, enables all changes to the sequences of machine executable codes and addresses to be accommodated without requiring supplemental processing of the line number table. The line number table includes a first entry showing the offset from the start address of the machine executable codes to the first machine executable code generated by the first source code line, a second entry showing the line number of the first source code line, and subsequent pairs of entries. One entry of a pair is the numeric difference between succeeding source code line numbers. The other is the difference between the offsets of the machine executable codes generated by the corresponding succeeding source code lines.

Software compiler and linker with improved line-number table

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San Jose, CA, United States of America

Joseph A Coha