Fix spurious WouldBlock errors when reading GPIO events - #8
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joshua-caddell wants to merge 1 commit into
Open
Fix spurious WouldBlock errors when reading GPIO events#8joshua-caddell wants to merge 1 commit into
joshua-caddell wants to merge 1 commit into
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Wrap the non-blocking read in a loop that clears the cached readiness flag on WouldBlock, re-arming the async wakeup. Previously, a spurious epoll notification would propagate as an error instead of retrying the read. This is the correct implementation for AsyncFd according to the documentation in tokio's io/async_fd.rs.
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@katyo please merge this one. |
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Wrap the non-blocking read in a loop that clears the cached readiness flag on WouldBlock, re-arming the async wakeup. Previously, a spurious epoll notification would propagate as an error instead of retrying the read.
This is the correct implementation for AsyncFd according to the documentation in tokio's io/async_fd.rs.