17 lines
1.1 KiB
Markdown
17 lines
1.1 KiB
Markdown
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uid: collections-allocation
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---
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# Use allocators to control unmanaged memory
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The Collections package allocates `Native-` and `Unsafe-` collections from unmanaged memory, which means that their existence is unknown to the garbage collector.
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You are responsible for deallocating any unmanaged memory that you don't need. If you fail to deallocate large or multiple allocations, it can lead to wasting a lot of memory, which might slow down or crash your program.
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|**Topic**|**Description**|
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|[Allocator overview](allocator-overview.md)| Understand how to use an allocator to manage unmanaged memory.|
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|[Aliasing allocators](allocator-aliasing.md)| Create aliases, which share memory allocations with another collection.|
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| [Rewindable allocator overview](allocator-rewindable.md)| Understand rewindable allocators, which can pre-allocate memory.|
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|[Custom allocator](allocator-custom-define.md)| Understand custom allocators, which you can create for specific memory allocation needs.|
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|[Allocator benchmarks](allocator-benchmarks.md)| Compare the various allocators and inspect their performance benchmarks.|
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