The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 03, 2022
Filed:
Dec. 24, 2019
Alibaba Group Holding Limited, Grand Cayman, KY;
Lingjun Chen, Hangzhou, CN;
Bin Wang, Hangzhou, CN;
Liangliang Zhu, Hangzhou, CN;
Xu Zeng, Hangzhou, CN;
Zilong Liu, Hangzhou, CN;
Junjie Cai, Hangzhou, CN;
Alibaba Group Holding Limited, George Town, KY;
Abstract
In a multitask computing system, there are multiple tasks include a first task, a second task, and a third task, and the first task has a higher priority than that of the second task and the third task. A method including raising the priority of the second task that shares a first critical section with the first task and is accessing the first critical section when the first task is blocked due to failure to access the first critical section; determining whether there is a third task that shares a second critical section with the second task and is accessing the second critical section; and raising, when the third task is present, the priority of the third task. The techniques of the present disclosure prevent a low-priority third task from delaying the execution of a second task, thus avoiding the priority inversion caused by the delayed execution of a high-priority first task.