Method and system for distributing asynchronous input from a sys

Details Method and system for distributing asynchronous input from a sys Method and system for distributing asynchronous input from a sys

1995-11-06

1997-09-09

Lim, Krisna

395678, G06F 946

Patent

active

056665237

ABSTRACT:
A method and system for reducing context switches when distributing input to applications are provided. When input is received, it is stored in a system input queue. A system thread distributes the input stored in the system input queue to appropriate thread input queues. Before the system thread can execute code to process system input, the system thread must obtain ownership of a synchronization mechanism. To eliminate unnecessary context switches, the operating system determines whether the synchronization mechanism is already owned before scheduling the system thread to execute and performing a context switch from the context of the currently executing thread to the context of the system thread. If the synchronization mechanism is not already owned, the system thread is granted ownership and distributes the input stored in the system input queue to the appropriate thread input queues. If the synchronization mechanism is already owned, the thread that already owns the synchronization mechanism distributes the input stored in the system input queue to the appropriate thread input queues.

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