Support legacy driver #73
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…mplete iovec support; other optimization
dyxushuai
reviewed
May 25, 2022
| } | ||
| _ => unsafe { std::hint::unreachable_unchecked() }, | ||
| } | ||
| me.index = usize::MAX; |
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返回 Ready 意味着这个 index 已经从 Slab 里删除，标记一下。当 Op Drop 时判断一下就不用从 Slab 里捞了（如果捞的话也捞不到因为是 usize::MAX）。
如果这里不改 index 就不太好标记，下次再捞到的可能是别人的。
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| let stream = TcpStream::from_shared_fd(completion.data.fd); | ||
| // wait write ready | ||
| // TODO: not use write to detect writable | ||
| let _ = stream.write([]).await; |
dyxushuai
reviewed
May 30, 2022
dyxushuai
reviewed
May 30, 2022
dyxushuai
reviewed
May 30, 2022
| // But not all platforms have the `accept4(2)` call. Luckily BSD (derived) | ||
| // OSes inherit the non-blocking flag from the listener, so we just have to | ||
| // set `CLOEXEC`. | ||
| #[cfg(any( |
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比较复杂的条件编译可以用宏来包装，也不需要增加额外的 block
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目前还好，就 legacy、linux、iouring 几个 feature 组合的情况。这个后面有需求再另开 PR 搞吧。
（当前这个是从 mio fork 出来的代码，具体 syscall 具体分析，不太好复用）
dyxushuai
approved these changes
May 30, 2022
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This PR does many things: