发明申请
US20090210560A1 CANCEL INSTRUCTION AND COMMAND FOR DETERMINING THE STATE OF AN I/O OPERATION
有权
取消用于确定I / O操作状态的指令和命令
- 专利标题： CANCEL INSTRUCTION AND COMMAND FOR DETERMINING THE STATE OF AN I/O OPERATION
- 专利标题（中）： 取消用于确定I / O操作状态的指令和命令
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申请号： US12030993申请日： 2008-02-14
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公开(公告)号： US20090210560A1公开(公告)日： 2009-08-20
- 发明人: Harry M. Yudenfriend , Daniel F. Casper , John R. Flanagan , Matthew J. Kalos , Dale F. Riedy , Louis W. Ricci , Roger G. Hathorn , Gustav E. Sittmann , Ugochukwu C. Njoku , Catherine C. Huang , Scott M. Carlson
- 申请人： Harry M. Yudenfriend , Daniel F. Casper , John R. Flanagan , Matthew J. Kalos , Dale F. Riedy , Louis W. Ricci , Roger G. Hathorn , Gustav E. Sittmann , Ugochukwu C. Njoku , Catherine C. Huang , Scott M. Carlson
- 申请人地址： US NY Armonk
- 专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人： INTERNATIONAL BUSINESS MACHINES CORPORATION
- 当前专利权人地址： US NY Armonk
- 主分类号： G06F3/00
- IPC分类号： G06F3/00
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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