40 lines
1.1 KiB
Rust
40 lines
1.1 KiB
Rust
//! Some types used by both our internal testing AioContext implementation as well as our
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//! WithAioContext wrapper.
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/// An Aio Callback. Qemu's AioContext actually uses a void function taking an opaque pointer.
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/// For simplicity we stick to closures for now.
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pub type AioCb = std::sync::Arc<dyn Fn() + Send + Sync>;
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/// This keeps track of our poll state (whether we wait to be notified for read or write
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/// readiness.)
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#[derive(Default)]
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pub struct AioHandlerState {
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pub read: Option<AioCb>,
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pub write: Option<AioCb>,
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}
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impl AioHandlerState {
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/// Get an mio::Ready with readable set if `read` is `Some`, and writable
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/// set if `write` is `Some`.
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pub fn mio_ready(&self) -> mio::Ready {
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use mio::Ready;
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let mut ready = Ready::empty();
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if self.read.is_some() {
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ready |= Ready::readable();
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}
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if self.write.is_some() {
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ready |= Ready::writable();
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}
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ready
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}
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/// Shortcut
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pub fn clear(&mut self) {
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self.read = None;
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self.write = None;
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}
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}
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