Resource management method of multiple nucleus system and its controlling nucleus

Abstract

The invention discloses a resource management method for a multi-core system. A resource management table is established in advance to store the address information of each resource that can be allocated in a resource pool; an idle index is set, and the idle index indexes to entries in the resource management table. The entry divides the resource management table into two parts that store all allocated resource address information and store unallocated resource address information; when releasing resources, determine the serial number of the resource management entry corresponding to the resource address information to be released and the last allocated resource address exchange the address information saved in the two serial number entries; reset the free index to index to another entry in the resource management table, which divides the resource management table into storage All allocated resource address information and two parts that store unallocated resource address information. The invention also discloses the control core of the multi-core system. By applying the present invention, resource allocation efficiency can be improved.

Description

technical field [0001] The invention relates to resource allocation technology, in particular to a resource management method and control core of a multi-core system. Background technique [0002] The multi-core central processing unit (CPU) can be regarded as a system-on-chip (SOC) formed by integrating multiple general-purpose central processing units (CPU) and some functional components into one chip. In this paper, the general-purpose CPU in the multi-core CPU is Called the core (core). A system using a multi-core CPU is called a multi-core system. In a multi-core system, each core can concurrently access critical resources (also known as shared resources). The allocation and access of these shared resources requires a certain mechanism for control and management to ensure the normal operation of the system. [0003] A typical application of a multi-core system is in a router product, which manages a large number of routing and other forwarding table information, and c...

AI Technical Summary

Problems solved by technology

[0011] 1. Due to the discontinuity of resource allocation, it is necessary to traverse the resource pool to find idle resources during resource allocation, which greatly affects the efficiency of resource allocation;

[0012] 2. When it is necessary to traverse the forwarding table (for example, to display all valid entries) or to delete the entire forwarding table, it is necessary to traverse the entire resource pool to find valid or satisfying entries; actually valid or Entries that meet the conditions account for a relatively small proportion of the entire forwarding table, but it is necessary to traverse the entire forwarding table, adding many useless search operations, which greatly affects the forwarding efficiency

[0013] 3. When it is necessary to delete a specific forwarding entry, in order to prevent the message that is accessing the entry from accessing the memory space that has been released, the delayed deletion mechanism introduced increases the complexity of the algorithm

This method is not conducive to the stability of the program. For example, if a deletion message is lost during the repeated addition and deletion process, it may cause subsequent addition of messages to use wrong resources.

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