Abstract: A method of managing an asynchronous messaging queue with a client computer in an asynchronous messaging system, where the client computer is programmed to store an manage the asynchronous messaging queue, includes receiving a reactive message in the asynchronous messaging queue, the reactive message including an identification of a previously initiated message and an action to be performed on the previously initiated message; and upon determining that the previously initiated message has already been received in the asynchronous messaging queue, performing the action on the previously initiated message with the client computer.

Abstract: To protect sensitive data in program code, a method includes providing a programming interface with a capability of allocating a protected region of memory which can only be accessed by authorized code. Sensitive data present in program code is stored in the protected region of memory. The method includes marking parts of code in a program as authorized or not authorized to access the sensitive data, and determining if that part of a program which is executing is authorized to access protected data by reference to the marking.

Abstract: A method and system for the management of tracing data of interest in a data processing system comprises identifying the location and length of one or more such units of interest as each unit is stored in main memory during execution of the program and recording a logical assignment of each unit of interest to a slot in a wrap around trace buffer. Copying of the units of interest to the trace buffer is deferred unless one or more predefined events occur. Such events may include an attempt to overwrite the data which has been logically assigned or a request for information stored in the trace buffer. The recorded assignments are discarded whenever it is calculated that the capacity of the trace buffer would be exceeded resulting in the corresponding units never needing to be copied to the trace buffer.

Abstract: A method of managing an asynchronous messaging queue with a client computer in an asynchronous messaging system, where the client computer is programmed to store an manage the asynchronous messaging queue, includes receiving a reactive message in the asynchronous messaging queue, the reactive message including an identification of a previously initiated message and an action to be performed on the previously initiated message; and upon determining that the previously initiated message has already been received in the asynchronous messaging queue, performing the action on the previously initiated message with the client computer.

Abstract: Managing an asynchronous messaging queue with a client computer in an asynchronous messaging system, where the client computer is programmed to store an manage the asynchronous messaging queue, includes receiving a reactive message in the asynchronous messaging queue, the reactive message including an identification of a referenced message and an action to be performed on the referenced message; and performing the action on the previously initiated message with the client computer if the referenced message is present in the asynchronous messaging queue.

Abstract: Provided are methods, apparatus and computer program products for change management within a data processing system and in particular for simulating the effect of removal of a file from the system. An anti-file is created within a file system layer that is overlaid onto a set of computer program files. The anti-file hides a corresponding first file such that overlaying the anti-file layer on the set of program files simulates the effect of removing the first file from the set of program files.

Abstract: Managing an asynchronous messaging queue with a client computer in an asynchronous messaging system, where the client computer is programmed to store an manage the asynchronous messaging queue, includes receiving a reactive message in the asynchronous messaging queue, the reactive message including an identification of a referenced message and an action to be performed on the referenced message; and performing the action on the previously initiated message with the client computer if the referenced message is present in the asynchronous messaging queue.

Abstract: A method and system for the management of tracing data of interest in a data processing system comprises identifying the location and length of one or more such units of interest as each unit is stored in main memory during execution of the program and recording a logical assignment of each unit of interest to a slot in a wrap around trace buffer. Copying of the units of interest to the trace buffer is deferred unless one or more predefined events occur. Such events may include an attempt to overwrite the data which has been logically assigned or a request for information stored in the trace buffer. The recorded assignments are discarded whenever it is calculated that the capacity of the trace buffer would be exceeded resulting in the corresponding units never needing to be copied to the trace buffer.

Abstract: To protect sensitive data in program code, a method includes providing a programming interface with a capability of allocating a protected region of memory which can only be accessed by authorized code. Sensitive data present in program code is stored in the protected region of memory. The method includes marking parts of code in a program as authorized or not authorized to access the sensitive data, and determining if that part of a program which is executing is authorized to access protected data by reference to the marking.

Abstract: Provided are methods, apparatus and computer program products for change management within a data processing system and in particular for simulating the effect of removal of a file from the system. An anti-file is created within a file system layer that is overlaid onto a set of computer program files. The anti-file hides a corresponding first file such that overlaying the anti-file layer on the set of program files simulates the effect of removing the first file from the set of program files.