Embedded system memory management method and device
An embedded system and memory management technology, applied in the field of embedded system memory management methods and devices, can solve problems such as crashing the system, restarting, affecting memory usage, etc., so as to increase the memory size, increase the available memory size, and prevent memory fragmentation the effect of
Active Publication Date: 2019-05-14
DEEPBLUE TECH (SHANGHAI) CO LTD
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Problems solved by technology
[0002] At present, embedded systems are widely used. Considering the performance limitations of embedded products, the memory resources of embedded systems are usually limited, which may affect the use of memory. For example, during the aging test of embedded products, it is often encountered In the case of crashes or system restarts due to insufficient storage, how to efficiently manage and use memory is very necessary
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[0059] 1) Determine the difference between the reserved memory corresponding to the specific item and the corresponding memory threshold, and release the memory of the difference value for the reserved memory corresponding to the specific item.
[0060] Wherein, the memory threshold may be set according to requirements or experiences of different specific projects, which is not limited in this embodiment of the present invention.
[0061] For example, if it is confirmed that DSP1 is used, but actually only needs to use 50M, the memory threshold corresponding to DSP1 can be set to 50M, but DSP1 has 64M reserved memory, then a part of memory can be released, releasing (64-50)=14M memory, Change the reserved memory corresponding to DSP1 to 50M. In this way, 14M memory can be saved and the actual available memory size of the low-end memory area can be increased.
[0062] 2) Determine the difference between the reserved memory corresponding to the specific project and the correspon...
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The invention relates to the field of embedded systems, and especially relates to an embedded system memory management method and device, and the method comprises: determining a reserved memory for aspecific project in a low-end memory area in an embedded system; wherein the memory of the embedded system is at least divided into a low-end memory area, and the low-end memory area represents a memory area with the memory size smaller than a preset threshold value; determining a specific item corresponding to the reserved memory needing to be released according to a preset strategy; releasing the reserved memory corresponding to the determined specific project. Therefore, a part of the reserved memory which does not affect use is released, the size of the actual available memory can be increased, memory fragments are prevented from being generated, the use of the system memory is optimized, and the situation of insufficient memory allocation can be reduced, so that the system stability can be improved, and the situations of crash or system restarting caused by insufficient storage are avoided.
Description
technical field [0001] The invention relates to the field of embedded systems, in particular to an embedded system memory management method and device. Background technique [0002] At present, embedded systems are widely used. Considering the performance limitations of embedded products, the memory resources of embedded systems are usually limited, which may affect the use of memory. For example, during the aging test of embedded products, it is often encountered In the case of crashes or system restarts due to insufficient storage, how to efficiently manage and use memory is very necessary. Contents of the invention [0003] Embodiments of the present invention provide a memory management method and device for an embedded system to optimize memory use in the embedded system. [0004] The specific technical scheme that the embodiment of the present invention provides is as follows: [0005] A memory management method for an embedded system, comprising: [0006] Determi...
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IPC IPC(8): G06F9/50
Inventor 陈海波
Owner DEEPBLUE TECH (SHANGHAI) CO LTD