I don't see an equivalent of async pwrite/pread (write at a specified offset) in async_std or in the tokio APIs. How do folks typically deal with this? The standard RUST API does have it but of course it is synchronous.
tokio has an AsyncRead and an AsyncWrite trait. async-std similarly has async versions of Read and Write.
These libraries also have structs which implement these traits and are used to perform async IO. For an instance, the File struct in tokio implements both AsyncRead and AsyncWrite and can be used as-such.
Generally, async file IO is implemented by just wrapping the std call in spawn_blocking, so you can do the same by calling the ordinary pwrite method from within spawn_blocking.
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Perfect. Thanks.