发明授权
US5623670A Method and apparatus for crash safe enforcement of mutually exclusive
access to shared resources in a multitasking computer system
失效
用于在多任务计算机系统中相互独占访问共享资源的安全强制执行的方法和装置
- 专利标题： Method and apparatus for crash safe enforcement of mutually exclusive access to shared resources in a multitasking computer system
- 专利标题（中）： 用于在多任务计算机系统中相互独占访问共享资源的安全强制执行的方法和装置
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申请号： US390179申请日： 1995-02-17
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公开(公告)号： US5623670A公开(公告)日： 1997-04-22
- 发明人: Philip L. Bohannon , Jacques Gava , Daniel F. Lieuwen , Sundararajarao Sudarshan
- 申请人： Philip L. Bohannon , Jacques Gava , Daniel F. Lieuwen , Sundararajarao Sudarshan
- 申请人地址： NJ Murray Hill
- 专利权人： Lucent Technologies Inc.
- 当前专利权人： Lucent Technologies Inc.
- 当前专利权人地址： NJ Murray Hill
- 主分类号： G06F15/16
- IPC分类号： G06F15/16 ; G06F9/46 ; G06F9/52 ; G06F15/177 ; G06F13/14
摘要：
A fast crash safe method and apparatus for enforcing mutually exclusive access to shared resources in a computer system through the use of semaphores. The acquisition and release of the semaphores is implemented at the user process level. An overestimate and underestimate of semaphore ownership are maintained in memory by library provided semaphore acquisition and release code. A cleanup routine reconciles the overestimate and underestimate to determine the ownership status of the semaphores.
公开/授权文献
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