b749106c0c
Motivation: There are use cases that involve accumulating data into a buffer, then carving out prefix slices and sending them off on their own journey for further processing. Modification: Add a Buf.bifurcate API, that split a buffer, and its ownership, in two. Internally, the API will inject and maintain an atomically reference counted Drop instance, so that the original memory segment is not released until all bifurcated parts are closed. This works particularly well for composite buffers, where only the buffer (if any) wherein the bifurcation point lands, will actually have its memory split. A composite buffer can otherwise just crack its buffer array in two. Result: We now have a safe way of breaking the single ownership of some memory into multiple parts, that can be sent and owned independently. |
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