Method for realizing memory sharing, electronic equipment and shared memory data management library

Abstract

The invention discloses a method for realizing memory sharing, electronic equipment and a shared memory data management library. The method for achieving memory sharing comprises the steps that a shared memory data pool is allocated, and the data pool can be accessed by multiple processes; the data pool is divided into a plurality of minimum shared data units; the memory management module locks the operation of the minimum shared data unit when receiving a read / write request of a process, and multiple processes concurrently apply for holding a read / write lock for operation; and the memory management module releases the read-write lock after executing the read / write operation of the process. The shared memory data pool is divided into small blocks (small particles), and the shared data of each small particle is locked and synchronized, so that a multi-concurrency effect is realized, the mutual waiting of multiple processes is reduced, and the overall communication efficiency is improved.

Description

technical field [0001] The disclosure relates to the field of computer technology, and in particular to a method for realizing memory sharing, electronic equipment and a shared memory data management library. Background technique [0002] In a robot system based on Linux or Unix, shared memory is a common inter-process communication method. A shared memory segment is created by the kernel and mapped to the data segment of the user-mode process. The biggest advantage of using shared memory communication is that it is very efficient, because processes can directly read and write memory without copying any data. However, when multiple processes use shared memory to communicate, it will involve the synchronization and mutual exclusion of reading and writing data, and the current common practice is to directly lock the entire shared memory data management library or data pool, then in a certain At this point in time, only one process can modify the shared data, and other process...

AI Technical Summary

Problems solved by technology

However, when multiple processes use shared memory to communicate, it will involve the synchronization and mutual exclusion of reading and writing data, and the current common practice is to directly lock the entire shared memory data management library or data pool, then in a certain At this point in time, only one process can modify the shared data, and other processes can only block and wait, resulting in low overall communication efficiency

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