Memory-preserving reboot
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United States of America Patent
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Jan 23, 2018
Grant Date -
Jun 25, 2015
app pub date -
Dec 20, 2013
filing date -
Dec 20, 2013
priority date (Note) -
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Abstract
Techniques are described for preserving application state in virtual memory during operating system reboot. A preserved virtual memory allocation that has been populated with state by an application is identified. The application is shutdown during the OS reboot. The operating system is rebooted without modifying the preserved virtual memory allocation. For example, physical memory and paging file pages associated with the preserved virtual memory allocation on the computer system are unmodified when the operating system is rebooted. The application is restarted after the operating system has been rebooted. The preserved virtual memory allocations are identified after the application is restarted, such as by checking contents of a memory region or by an API return value. The application is then reconnected to the preserved virtual memory allocation, which allows the application to immediately access the preserved state without having to rebuild new state.
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