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Hardware Enabled Lock Mediation

Inactive Publication Date: 2013-01-03
IBM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a way to manage access to a shared resource in a computer system. When a virtual machine needs to acquire a lock on the resource, the system checks if it is within a specific time period. If it is, the system ends the time period early and switches to a different context. This allows the virtual machine to acquire the lock without interrupting other tasks that may also need access to the resource. The technical effect is improved performance and efficiency in managing access to shared resources in computer systems.

Problems solved by technology

Each distinct operating system or image of an operating system running within a platform is protected from each other, such that software errors on one logical partition cannot affect the correct operation of any of the other partitions.

Method used

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  • Hardware Enabled Lock Mediation
  • Hardware Enabled Lock Mediation
  • Hardware Enabled Lock Mediation

Examples

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Embodiment Construction

[0017]As will be appreciated by one skilled in the art, aspects of the present invention may be embodied as a system, method or computer program product. Accordingly, aspects of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a “circuit,”“module” or “system.” Furthermore, aspects of the present invention may take the form of a computer program product embodied in one or more computer readable medium(s) having computer readable program code embodied thereon.

[0018]Any combination of one or more computer readable medium(s) may be utilized. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagne...

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PUM

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Abstract

A tangible storage medium and data processing system build a runtime environment of a system. A profile manager receives a service request containing a profile identifier. The profile identifier specifies a required version of at least one software component. The profile manager identifies a complete installation of the software component, and at least one delta file. The profile manager dynamically constructs a classpath for the required version by preferentially utilizing files from the at least one delta file followed by files from the complete installation. The runtime environment is then built utilizing the classpath.

Description

BACKGROUND[0001]1. Field[0002]The disclosure relates generally to a computer implemented method, a computer usable program code, and a data processing system. More specifically, the present disclosure relates to a computer implemented method, a computer usable program code, and a data processing system for controlling access to a contested resource.[0003]2. Description of the Related Art[0004]Increasingly large symmetric multi-processor data processing systems are not being used as single large data processing systems. Instead, these types of data processing systems are being partitioned and used as smaller systems. These systems are also referred to as logical partitioned (LPAR) data processing systems. A logical partitioned functionality within a data processing system allows multiple copies of a single operating system or multiple heterogeneous operating systems to be simultaneously run on a single data processing system platform. A partition, within which an operating system ima...

Claims

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Application Information

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IPC IPC(8): G06F15/00
CPCG06F9/5077G06F9/526G06F2209/522
Inventor ARGES, CHRISTOPHER J.FONTENOT, NATHAN D.SCHOPP, JOEL H.STROSAKER, MICHAEL T.
Owner IBM CORP