77 lines
1.9 KiB
Rust
77 lines
1.9 KiB
Rust
use {
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crate::io_uring::{
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pending_result::PendingResult,
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sys::{io_uring_sqe, IORING_OP_CONNECT},
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IoUring, IoUringData, IoUringError, IoUringTaskId, Task, TaskResultExt,
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},
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std::{mem, ptr, rc::Rc},
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uapi::{c, OwnedFd, SockAddr},
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};
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impl IoUring {
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pub async fn connect<T: SockAddr>(&self, fd: &Rc<OwnedFd>, t: &T) -> Result<(), IoUringError> {
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self.ring.check_destroyed()?;
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let id = self.ring.id();
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let pr = self.ring.pending_results.acquire();
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{
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let mut pw = self.ring.cached_connects.pop().unwrap_or_default();
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pw.id = id.id;
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pw.fd = fd.raw() as _;
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unsafe {
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ptr::copy_nonoverlapping(t, &mut pw.sockaddr as *mut _ as *mut _, 1);
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}
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pw.addrlen = mem::size_of::<T>() as _;
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pw.data = Some(Data {
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pr: pr.clone(),
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_fd: fd.clone(),
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});
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self.ring.schedule(pw);
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}
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Ok(pr.await.map(drop)).merge()
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}
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}
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struct Data {
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pr: PendingResult,
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_fd: Rc<OwnedFd>,
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}
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pub struct ConnectTask {
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id: IoUringTaskId,
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fd: i32,
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sockaddr: c::sockaddr_storage,
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addrlen: u64,
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data: Option<Data>,
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}
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impl Default for ConnectTask {
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fn default() -> Self {
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Self {
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id: Default::default(),
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fd: 0,
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sockaddr: uapi::pod_zeroed(),
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addrlen: 0,
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data: None,
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}
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}
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}
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unsafe impl Task for ConnectTask {
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fn id(&self) -> IoUringTaskId {
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self.id
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}
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fn complete(mut self: Box<Self>, ring: &IoUringData, res: i32) {
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if let Some(data) = self.data.take() {
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data.pr.complete(res);
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}
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ring.cached_connects.push(self);
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}
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fn encode(&self, sqe: &mut io_uring_sqe) {
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sqe.opcode = IORING_OP_CONNECT;
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sqe.fd = self.fd;
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sqe.u2.addr = &self.sockaddr as *const _ as _;
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sqe.u1.off = self.addrlen;
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}
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}
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