Chirantan Ekbote 4a86ce877a cros_async: Simplify uring executor drop impl ... Closing the uring fd should release the resources borrowed by the kernel so there's no reason to call io_uring_enter to drive any pending IO to completion. Doing so may end up blocking the thread indefinitely. Instead just make sure that the URingContext is dropped before anything else. Rust's drop order guarantees that struct fields are dropped in the order of declaration so this just means putting it first. Also, since the RawExecutor is wrapped in an Arc it may end up being dropped from a different thread than the one that called run() or run_until(). We know there are no other references so just clear the cached thread_id so that we don't panic in the drop impl. We don't currently have any users that want to run the executor concurrently on multiple threads so we'll just punt that problem until we actually need to deal with it. BUG=none TEST=unit tests Change-Id: Icf6a23fc433128dd00adbd56a715dbae24cd8ea2 Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/crosvm/+/2643845 Tested-by: kokoro <noreply+kokoro@google.com> Reviewed-by: Noah Gold <nkgold@google.com> Reviewed-by: Dylan Reid <dgreid@chromium.org> Commit-Queue: Chirantan Ekbote <chirantan@chromium.org>		2021-01-26 09:15:13 +00:00
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src	cros_async: Simplify uring executor drop impl	2021-01-26 09:15:13 +00:00
.build_test_skip
Cargo.toml	cros_async: Refactor executors	2021-01-25 08:52:27 +00:00