Patent
1996-12-05
1998-03-10
Downs, Robert W.
395412, 39549701, 39549702, 39549704, 395490, G06F 1200, G06F 1202, G06F 1214
Patent
active
057271780
ABSTRACT:
An operating system component allocates locked stack memory pages to threads on an as needed basis. Each thread has a permanent locked stack. A second locked stack page is mapped to each thread. If a thread is using the assignable locked stack page when the system scheduler switches away from that thread, the assignable stack page becomes owned by that thread. When the system scheduler switches to a thread the assignable stack page mapped to that thread is checked to see if it is owned by another thread. If so, an unowned assignable stack page is mapped to the thread prior to switching to that thread. The size of the pool of locked assignable stack pages is adjusted dynamically. If the number of unowned assignable stack pages exceeds a threshold, locked stack pages are released. If the number of locked assignable stack pages falls below a predetermined number, additional assignable stack pages are allocated.
REFERENCES:
patent: 4926322 (1990-05-01), Stimac et al.
"Encyclopedia for Windows.TM.: The One Book That Belongs Beside Your Personal Computer" Windows.TM. Magazine, The Eddy Group 1993, p. 856.
King, Adrian, Inside Windows.TM. 95, Microsoft Press 1994, pp. 48-53, 112-121.
Lipe Ralph Allen
Pletcher Richard Allen
Downs Robert W.
Microsoft Corporation
Nguyen Than V.
LandOfFree
System and method for reducing stack physical memory requirement does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System and method for reducing stack physical memory requirement, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for reducing stack physical memory requirement will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-148980