Memory management method and device

Abstract

The embodiment of the invention discloses a memory management method and device. The method comprises the following steps: when receiving a memory application request of any node program, distributing a memory block to any node program, and marking the memory block into an occupancy state in a memory pool linked list; when receiving a memory release request of any node program, releasing a memory release block according to the memory release request, and marking the memory release block in the memory pool linked list into an idle state; and when the memory release block is a first split block and a second split block corresponding to the first split block is in the idle state, combining the first split block and the second split block into a combined memory block. By releasing the memory block corresponding to the memory release request of any node program, memory fragments generated by an uncertain memory application size are reduced, so that waste of resources is avoided. The node memory can be reasonably utilized by splitting and combining the memory block, so that the memory utilization rate is improved.

Description

technical field [0001] The invention relates to the field of storage, in particular to a memory management method and device. Background technique [0002] Wireless sensor network is currently a research field that has attracted much attention. It is composed of a large number of micro sensor nodes deployed in the monitoring area, and forms a network system through wireless communication. It can cooperatively perceive, collect, and process the perceived Object information can be used in military defense, industrial and agricultural control, environmental detection, emergency rescue and disaster relief, remote control of dangerous areas and other fields. Among them, the sensor node is a miniature embedded system with very limited hardware resources, and the operating system needs to be able to use its limited memory, processor and communication modules in an energy-efficient and efficient manner. In the actual situation, the sensor node program needs to frequently apply for ...

AI Technical Summary

Problems solved by technology

In the actual situation, the sensor node program needs to frequently apply for memory and release memory, but according to the existing memory management method, due to the uncertainty of the memory size applied by the node program, there will be a large number of small and inappropriate memory in the operating system when the memory is released. Continuous memory fragmentation causes waste of resources and reduces memory utilization

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