发明授权
US5729710A Method and apparatus for management of mapped and unmapped regions of
memory in a microkernel data processing system
失效
用于在微内核数据处理系统中管理映射和未映射区域的存储器的方法和装置
- 专利标题: Method and apparatus for management of mapped and unmapped regions of memory in a microkernel data processing system
- 专利标题(中): 用于在微内核数据处理系统中管理映射和未映射区域的存储器的方法和装置
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申请号: US263710申请日: 1994-06-22
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公开(公告)号: US5729710A公开(公告)日: 1998-03-17
- 发明人: James Michael Magee , Freeman Leigh Rawson, III , Guy Gil Sotomayor, Jr.
- 申请人: James Michael Magee , Freeman Leigh Rawson, III , Guy Gil Sotomayor, Jr.
- 申请人地址: 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: NY Armonk
- 主分类号: G06F9/46
- IPC分类号: G06F9/46 ; G06F12/10 ; G06F12/12 ; G06F12/14 ; G06F12/00
摘要:
A memory management method for a microkernel architecture and the microkernel itself feature template regions which are defined by the microkernel in the memory, as special objects. In the memory management method, after the microkernel is loaded into the memory of a data processing system, it begins creating task containers in the memory. It does this by forming template regions as special objects in the memory, the template regions having a set of attributes. Then, when the microkernel forms a task in the memory, it does so by mapping the template region into the task. The microkernel defines a virtual address space for the task based upon the template region. Later, when the microkernel conducts virtual memory operations on the template regions, the effect of the virtual memory operations is manifested in the task by means of the mapping relationship. In this manner, a single template region can be mapped into multiple tasks, simultaneously. By directing virtual memory operations to the template region on which they will take effect, the sharing of the virtual memory operations is much easier to accomplish since the changes are made to a template region, not to the mapping of the template region within each task.
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