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Latch mechanism for concurrent computing environments

  • US 20020042809A1
  • Filed: 06/27/2001
  • Published: 04/11/2002
  • Est. Priority Date: 10/06/2000
  • Status: Active Grant
First Claim
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1. A method for providing access to a resource in a programming environment supporting concurrent tasks, comprising the steps of:

  • (a) providing a latch to a first task, wherein the first task requests the latch to obtain access to the resource;

    (b) releasing the latch after the first task has accessed the resource, while still holding the latch;

    (c) marking the latch stealable, while still holding the latch; and

    (d) marking the latch unstealable if the latch is not marked stolen by a second task seeking access to the resource.

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