Electrical computers and digital processing systems: virtual mac – Task management or control – Process scheduling
Reexamination Certificate
2008-05-13
2008-05-13
Bullock, Jr., Lewis A. (Department: 2195)
Electrical computers and digital processing systems: virtual mac
Task management or control
Process scheduling
C718S104000, C718S102000
Reexamination Certificate
active
07373646
ABSTRACT:
Network processes within a group of network processes are configured to share stack space by controlling when a context switch may be performed between processes in the group. Since a context switch will not be performed between group members during execution of the event loop, the dedicated stack requirements of the process are limited to that required to store state information when the process is idling on a select function. This reduces system stack requirements by allowing a large portion of the stack to be shared by multiple network processes without creating unintended dependencies between the processes. A semaphore may be used to control access to the shared stack space to prevent unintended context switches between group members. If there is more than one group of processes, the operating system may perform context switches between processes in different groups since each group has its own dedicated area of shared stack.
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Anderson Gorecki & Manaras LLP
Bullock, Jr. Lewis A.
Nortel Network Limited
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