69 lines
1.6 KiB
Rust
69 lines
1.6 KiB
Rust
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/*
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*
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* Copyright (c) 2020-2022 Project CHIP Authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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use std::sync::Once;
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use async_channel::{bounded, Receiver, Sender};
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use crate::error::Error;
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use super::session::CloneData;
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#[derive(Debug)]
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pub enum Msg {
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Tx(),
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Rx(),
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NewSession(CloneData),
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}
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#[derive(Clone)]
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pub struct WorkQ {
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tx: Sender<Msg>,
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}
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static mut G_WQ: Option<WorkQ> = None;
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static INIT: Once = Once::new();
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impl WorkQ {
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pub fn init() -> Result<Receiver<Msg>, Error> {
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let (tx, rx) = bounded::<Msg>(3);
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WorkQ::configure(tx);
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Ok(rx)
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}
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fn configure(tx: Sender<Msg>) {
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unsafe {
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INIT.call_once(|| {
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G_WQ = Some(WorkQ { tx });
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});
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}
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}
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pub fn get() -> Result<WorkQ, Error> {
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unsafe { G_WQ.as_ref().cloned().ok_or(Error::Invalid) }
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}
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pub fn sync_send(&self, msg: Msg) -> Result<(), Error> {
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smol::block_on(self.send(msg))
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}
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pub async fn send(&self, msg: Msg) -> Result<(), Error> {
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self.tx.send(msg).await.map_err(|e| e.into())
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}
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}
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