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Methods and systems for canceling requests for the transmission of data

  • US 6,931,645 B2
  • Filed: 12/15/2000
  • Issued: 08/16/2005
  • Est. Priority Date: 12/15/2000
  • Status: Expired due to Fees
First Claim
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1. In a computer with a stack of input/output drivers, a method for canceling a request for a transmission of data, the request for the transmission of data being handled by drivers in the stack, one input/output driver being higher in the stack than another input/output driver, the method comprising:

  • associating, by a high-level input/output driver a cancel identifier with the request for the transmission of data;

    requesting service of a lower-level input/output driver, where the request for service includes the cancel identifier;

    requesting that the lower-level input/output driver cancel the request for service, the request for service identified by the associated cancel identifier; and

    canceling the request for service if the lower-level input/output driver determines that the request for service can still be canceled, whereby the high-level input/output driver cancels the request for the transmission of data, wherein the step of associating comprises associating a cancel identifier that has been used with another request for a transmission of data.

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