Efficient dynamic memory management method applied to MCU

Abstract

The invention belongs to the field of computer software design. The invention discloses an efficient dynamic memory application method applied to a small MCU. The efficient dynamic memory applicationmethod mainly solves the problem that a small MCU has no heap space and dynamically manages the memory, manages large memory blocks, ensures that the fragmentation rate is low in the release process of an application, marks the use condition of the memory blocks by using an MAT table, and optimizes the search speed by using MAT table matching in the memory block search process. The efficient dynamic memory application method applied to a small MCU provides a global memory initialization function, a memory dynamic application function and a memory release function to be managed in a global area. The efficient dynamic memory application method applied to a small MCU has the advantages of less occupied system resources, high execution efficiency and low memory fragmentation rate, and is particularly suitable for small MCUs with shortage of memory resources.

Description

technical field [0001] The invention belongs to the field of computer software design and relates to a high-efficiency dynamic memory management method applied to an MCU. Background technique [0002] Since the system resources in the embedded environment, especially the small MCU, are usually relatively small, especially the precious memory resources, the use of memory will become the key to the performance of the embedded system. In the software design of some traditional large system platforms , the function malloc of the C standard library is often used to dynamically apply for memory. The memory requested by this method is all memory applied in the heap. In some small MCU system startup management, the memory is not divided into stacks, so it cannot The malloc function is used to manage the memory, and the dynamic memory application method of the C standard library has poor real-time performance, and the memory fragmentation rate is relatively high after use. Tradition...

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Problems solved by technology

[0004] In order to solve the problems of poor real-time performance, relatively high memory fragmentation rate and low execution rate of traditional methods in small MCUs, an internal dynamic memory management method is proposed, so that the memory management method occupies less system resources, high execution efficiency, and low memory fragmentation rate. Low

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