International Business Machines Corporation

Andrew Simon Clement

Matthew Alexander Webster

Matthew P Chapman

Sian Suzanne January

Gordon Douglas Hutchison

Ian J Mitchell

Thomas James Freund

Steven Powell

Glyn Normington

Ann Eleanor Dalton

Barry Dickinson

R Anthony Storey

Andrew John Huff

Helen L Beeken

Helen Louise Hawkins

Jonathan Peter Hoare Lawrence

A method of operating a data processing system comprises running a source code editor, displaying source code in a graphical interface of the source code editor, and displaying a summary box, the summary box comprising a list of one or more aspects affecting the source code. The system is configured so that on receipt of a user input corresponding to an aspect listed in the summary box there is displayed one or more cross-reference markers of the selected aspect in the graphical interface of the source code editor.

Method of operating a data processing system

Operating an integrated development environment in a data processing system comprising running a source code editor, displaying source code in a graphical interface of the source code editor, displaying at least one cross-reference marker, the at least one cross-reference marker indicating crosscutting in the source code, receiving an input, changing one or more cross-reference markers, and highlighting the one or more changed cross-reference marker.

Depicting changes to structures in an integrated development environment

A method, apparatus and computer program product for providing recovery data for program code. A first version of an object code module is received. A second version of the object code module is received, the second version being a subsequent version to the first version. A unique identifier is inserted in the second version, wherein the unique identifier indicates a location of recovery data. First difference data representing a difference between the second version and the first version is calculated. The first difference data is stored as the recovery data. The first difference data is stored within the second version of the object code module at the location. The unique identifier indicates a location of the recovery data.

Providing recovery data for program code

Provided is a JIT compiler that changes the status of run-time determined software routines between being activated and deactivated in an application program. Conditional statements which are used at run-time to determine whether such a routine has been activated or deactivated are presented as discrete conditions that always evaluate to a known result by using an invariant flag in the compiled bytecode. The JIT compiler optimises an application program by excluding discrete condition checks. Consequently, if the branch of the discrete condition that will never execute includes a run-time determined software routine, then the routine will be excluded from the JIT compilation and will not form part of the JIT compiled native machine code. A run-time class or code replacement facility is used as a means of activating or deactivating a run-time determined software routine at run-time by changing the value of the invariant flag of said routine.

Method and apparatus for activating/deactivating run-time determined software routines in Java compiled bytecode applications

In a workload managed system comprising a plurality of server processes each capable of supporting a given program entity, such as an Enterprise JavaBeans&#x2122; specified stateful session bean, a stateful session bean instance is passivated, by writing it to a bean store, on completion of a unit of work. On next use the session bean is reactivated, by reading it from the bean store, in any one of the plurality of servers thereby allowing workload management for stateful session beans. A routing table is maintained, in non-volatile mass storage, that contains location information for units of work and stateful session bean instances, used to maintain unit of work-server affinity for the lifetime of the unit of work Stateful session beans instances are associated with ID keys that include a flag that is used to indicate whether or not the routing table contains location information for the bean instance.

Workload management of stateful program entities

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Fair Oak, United Kingdom

Andrew Simon Clement