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