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by vlovich123
292 days ago
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The memory is allocated by the runtime that has the io_uring backend. You ask it for memory which it manages in its own memory allocator. Lifetime is managed no differently than Vec. For example, when you drop the DmaBuffer [1] it goes back into the pool. Or you hand it off as an I/O submission after filling it up. The memory frequently needs to be mlocked memory anyway, so a general purpose allocator doesn't work. [1] https://docs.rs/glommio/latest/glommio/fn.allocate_dma_buffe... |
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