Managing persistent and temporary data objects in a portable data carrier

US8819373B2 · kind B2 · utility

Assignee

• GIESECKE & DEVRIENT GMBH · DE

Inventors

• Thomas Stocker · Wolfsburg, DE
• Georg Kramphosthuber · Birkenfeld, DE

Key dates

• Filing date: May 4, 2004
• Grant date: Aug 26, 2014
• Expiry date: Jul 5, 2024

Classification

• Technology area (CPC G): Physics
• CPC primary: G07F7/084
• WIPO field: Control
• WIPO sector: Instruments

Abstract

In a process for memory management in the execution of a program by a portable data carrier which has a first and a second memory region for the storage of objects generated in program execution, an object is initially created at least in part in the second memory region. If, in the course of further program execution, a persistent reference to the object is generated, the object is transferred to the first memory region. In a process for converting a source program into an executable program, a check is carried out at compile time as to whether a persistent reference to an object to be newly created is generated. Depending on the result of that check, program code is generated which creates the object either in the first or at least in part in the second memory region.