METHOD AND SYSTEM OF A HIERARCHICAL TASK SCHEDULER FOR A MULTI-THREAD SYSTEM

摘要

A method for scheduling tasks from a program executed by a multi-processor core system is disclosed. The method includes a scheduler that groups a plurality of tasks, each having an assigned priority, by priority in a task group. The task group is assembled with other task groups having identical priorities in a task group queue. A hierarchy of task group queues is established based on priority levels of the assigned tasks. Task groups are assigned to one of a plurality of worker threads based on the hierarchy of task group queues. Each of the worker threads is associated with a processor in the multi-processor system. The tasks of the task groups are executed via the worker threads according to the order in the hierarchy.

主权项

1. A task scheduler for a scheduling a plurality of tasks of a program to be executed on one or more worker threads, the task scheduler comprising:
a task group component that creates task groups by assigning each of the plurality of tasks to a task group; a task group queue component that organizes the task groups according to a predetermined criteria in a task group queue and creates a hierarchy of task group queues; a worker thread pool including a group of worker threads each associated with one of a plurality of processor cores; and a scheduler logic component that assigns the worker threads in the worker thread pool to execute the task group queues according to the hierarchy of task group queues.