发明名称 |
Dual mode operating system for a computing device |
摘要 |
A computing device which runs non-pageable real time and pageable non-real time processes is provided with non-pageable real time and pageable non-real time versions of operating system services where the necessity to page in memory would block a real-time thread of execution. In one embodiment, a real time operating system service has all its code and data locked, and only supports clients that similarly have their code and data locked. This ensures that such a service will not block due to a page fault caused by client memory being unavailable. A non-real time operating system service does not have its data locked and supports clients whose memory can be paged out. In a preferred embodiment servers which are required to provide real time behaviour are multithreaded and arrange for requests from real time and non-real time clients to be serviced in different threads. |
申请公布号 |
GB2423843(B) |
申请公布日期 |
2009.04.22 |
申请号 |
GB20060004119 |
申请日期 |
2006.03.01 |
申请人 |
SYMBIAN SOFTWARE LTD;NOKIA CORPORATION |
发明人 |
ANDREW THOELKE;DENNIS MAY |
分类号 |
G06F9/44;G06F12/10;G06F12/12 |
主分类号 |
G06F9/44 |
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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