Dynamic memory pools are a pool of memory blocks that can be dynamically allocated and freed at run-time. Their memory blocks are allocated on a given Memory Segment. They have the particularity that if there is no block available when attempting to get one, it will be allocated from free space on the memory segment.
| Warning |
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Note that the dynamic memory pools DO NOT guarantee the data integrity between a block free and a block get operation. |
The dynamic memory pools can be used to allocate general-purpose memory blocks and hardware memory blocks. Hence, two different functions can be used to create a dynamic memory pool:
| Function | Description | Use case |
|---|---|---|
Mem_DynPoolCreate() | Creates a standard memory pool and allows to specify the memory alignment of each memory block. | General-purpose memory block. |
Mem_DynPoolCreateHW() | Creates a hardware memory pool. The memory blocks will be aligned as specified and padded as per memory segment properties. | Memory blocks that can be read/written via a DMA engine. |
Dynamic memory pool usage example
gives an usage example of dynamic memory pools.