Method for implementing parallel multi-core configuration lock on MIPS platform

Abstract

The invention discloses an implementation method of an MIPS platform down parallel multinuclear allocation lock, which is used to solve the problem of lock reentrant in the prior art. The method comprises that: predefining a plurality of locks according to a basic lock which is provided by a system, and the locks comprise an application layer system calling adding lock, an application layer system calling releasing lock, an application layer system calling repeated adding lock, a timer lock, a timer unlock and a timer repeated adding lock. Redefining two locks which are an event response update lock and an event response recover lock according to the predefined locks. During the event response treatment process, when generating the problem that the lock is reentered, the event response update lock is called to add a lock or update to a new lock in an event response function, after the event response function finishes to be treated, the event response recover lock is called to release the lock or recover to a previous adding lock. Through the method, an operating system on a multinuclear architecture has excellent stability, robustness, expansibility, safety and parallelism.

Description

technical field [0001] The invention relates to the field of MIPS (Microprocessor without interlocked piped stages) multi-core technology, in particular to a method for realizing parallel multi-core configuration locks under the MIPS platform. Background technique [0002] The MIPS multi-core processor based on the MIPS instruction set occupies the mainstream position in the embedded system. At present, it occupies most of the market in set-top boxes, information terminals, and network connection equipment, and has entered the field of network security equipment. In the framework of multi-core parallelism, the problem of parallel access to some shared resources is the key technology in the whole architecture. [0003] The Linux system provides the most basic locks, including: read lock (read_lock): multiple read locks can be acquired for the same resource at the same time, so that these codes can be executed in parallel; A write lock, and the resources to be protected cann...

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Problems solved by technology

[0004] In the process of event response processing, lock re-entry phenomenon sometimes occurs. The so-called lock re-entry phenomenon means that a notifier event is triggered in a notifier processing function; in the existing lock technology, the problem of lock re-entry has not been solved plan

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