A practical guide to managing native memory in Java using the Foreign Function & Memory (FFM) API. Covers the four built-in Arena types (global, auto, confined, shared) with their lifetime and thread-safety trade-offs, how to implement a custom Arena wrapper, using C-level malloc/free via downcall handles for maximum control,
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What is the Memory APIArenasNative Memory allocation methodsPool of reusable memorySlicingTL;DRConclusionSort: