发明名称 |
CANCEL INSTRUCTION AND COMMAND FOR DETERMINING THE STATE OF AN I/O OPERATION |
摘要 |
The state of an input/output (I/O) operation is determined in an I/O processing system. A command is received from an I/O operating system at a channel subsystem for initiating the I/O operation, a time period is for completion of the I/O operation, and the command for initiating the I/O operation is sent from the channel subsystem to the control unit. Responsive to the time period nearing elapsing without the I/O operation completing, a cancel instruction is received from the I/O operating system at the channel subsystem. Responsive to a determination by the I/O operating system to interrogate the control unit, an instruction to interrogate the control unit is received with the cancel instruction from the I/O operating system.
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申请公布号 |
US2009210560(A1) |
申请公布日期 |
2009.08.20 |
申请号 |
US20080030993 |
申请日期 |
2008.02.14 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
YUDENFRIEND HARRY M.;CASPER DANIEL F.;FLANAGAN JOHN R.;KALOS MATTHEW J.;RIEDY DALE F.;RICCI LOUIS W.;HATHORN ROGER G.;SITTMANN GUSTAV E.;NJOKU UGOCHUKWU C.;HUANG CATHERINE C.;CARLSON SCOTT M. |
分类号 |
G06F3/00 |
主分类号 |
G06F3/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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