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aa6012baae
Extraction wasn't cancellable by `cancel_on_user_sig_term` used in `entry` since it calls `block_in_place`. This PR adds cancellation support to it by adding a `static` variable `OnceCell` to `wait_on_cancellation_signal` so that once it returns `Ok(())`, all other calls to it after that point also returns `Ok(())` immediately. `StreamReadable`, which is used in cancellation process, then stores a boxed future of `wait_on_cancellation_signal` and polled it in `BufReader::fill_buf`. Note that for zip, the extraction process takes `File` instead of `StreamReadable` due to `io::Seek` requirement, so it cancelling during extraction for zip is still not possible. This PR also optimized `extract_bin` and `extract_zip` by using `StreamReadable::copy` introduced to this PR instead of `io::copy`, which allocates an internal buffer on stack, which imposes extra copy. It also fixed `StreamReadable::fill_buf` by ensuring that empty buffer is only returned on eof. * Make `wait_on_cancellation_signal` pub * Enable feature `parking_lot` of dep tokio * Mod `wait_on_cancellation_signal`: Use `OnceCell` internally to archive the effect that once call to it return `Ok(())`, all calls to it after that also returns `Ok(())`. * Impl `From<BinstallError>` for `io::Error` * Impl cancellation on user signal in `StreamReadable` * Fix err msg when cancelling during extraction in `ops::resolve` * Optimize: Impl & use `StreamReadable::copy` which is same as `io::copy` but does not allocate any internal buffer since `StreamReadable` is buffered. * Fix `next_stream`: Return non-empty bytes on `Ok(Some(bytes))` Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com> |
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| normalize-path | ||