Abstract: A method includes comparing a first layout of data elements associated with a first version of a class and a second layout of data elements associated with a second version of the class. The first and second versions of the class are associated respectively with first and second versions of assembly code. The method also includes updating method information in an existing object instance associated with the first version of the class if the first and second layouts are identical. In addition, the method includes creating a new object instance associated with the second version of the class and transferring one or more values of one or more data elements from the existing object instance to the new object instance when the first and second layouts are not identical.

Abstract: A method includes executing one or more applications in a deterministic execution environment and executing a plurality of background tasks in the deterministic execution environment. The one or more applications and the background tasks are executed in different time slots. At least one of the background tasks cannot be completed within a single time slot. The at least one of the background task is executed incrementally in multiple non-adjacent time slots so as to prevent the at least one background task from interfering with the execution of the one or more applications.

Abstract: A method includes identifying one or more features of an execution environment to be used by an application during execution and determining if use of the one or more features is restricted. The method also includes, if use of the one or more features is not restricted, compiling and executing the application in the execution environment. The method further includes, if use of any of the one or more features is restricted, blocking execution of the application in the execution environment. Determining if the use of the one or more features is restricted may include using a configuration list or a profile identified using a custom attribute. The configuration list or the profile identifies features that are available for use in the execution environment and/or features that cannot be used in the execution environment.