CONTROLLING EXECUTION OF THREADS IN A MULTI-THREADED PROCESSOR

摘要

Execution of threads in a processor core is controlled. The processor core supports simultaneous multi-threading (SMT) such that there can be effectively multiple logical central processing units (CPUs) operating simultaneously on the same physical processor hardware. Each of these logical CPUs is considered a thread. In such a multi-threading environment, it may be desirous for one thread to stop other threads on the processor core from executing. This may be in response to running a critical sequence or other sequence that needs the processor core resources or is manipulating processor core resources in a way that other threads would interfere with its execution.

主权项

1. A computer system for controlling execution of threads in a computing environment, said computer system comprising:
a memory; and a processor in communications with the memory, wherein the computer system is configured to perform a method, said method comprising:
stopping, by a thread running in the processor of the computing environment, execution of another thread executing within the processor, the stopping using one or more controls in one or more shared registers of the processor, the one or more shared registers being shared by the thread and the other thread; andperforming by the thread, based on stopping execution of the other thread, one or more operations.