发明申请
US20090210573A1 COMPUTER COMMAND AND RESPONSE FOR DETERMINING THE STATE OF AN I/O OPERATION
有权
用于确定I / O操作状态的计算机命令和响应
- 专利标题： COMPUTER COMMAND AND RESPONSE FOR DETERMINING THE STATE OF AN I/O OPERATION
- 专利标题（中）： 用于确定I / O操作状态的计算机命令和响应
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申请号： US12030989申请日： 2008-02-14
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公开(公告)号： US20090210573A1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：
A state of an input/output (I/O) operation in an I/O processing system is determined. A request for performing the I/O operation is received from an I/O operating system at a channel subsystem and forwarded to a control unit controlling an I/O device for executing the I/O operation. After a predetermined amount of time passes without receiving indication from the control unit that the I/O operation is completed, an interrogation request is received at the channel subsystem from the I/O operating system for determining the state of the I/O operation. An interrogation command is sent from the channel subsystem to the control unit. A response is received from the control unit, the response indicates a state of the I/O device executing the I/O operation, a state of the control unit controlling the I/O device executing the I/O operation, and the state of the I/O operation being executed.
公开/授权文献
- US08108570B2 Determining the state of an I/O operation 公开/授权日：2012-01-31
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