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+# Listpool
+
+A block allocator built from a single, contiguous array of memory that maintains
+free and used blocks in doubly linked lists.
+
+A `listpool` is similar to a `mempool`, but the additional structure allows it
+to:
+
+- Allocate and free blocks in constant time.
+- Traverse used blocks in linear time in the number of used blocks, as opposed
+  to the total number of blocks like in a `mempool`.
+
+A `listpool` otherwise provides the same guarantees and characteristics as a
+`mempool`.