src/process/queue.rs

/*******************************************************************************
* Copyright (c) 2021 CentraleSupelec, CEA-LIST
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Erwan Mahé (CentraleSupelec) - initial API and implementation
*******************************************************************************/

use crate::process::hibou_process::NextToProcess;


pub struct ProcessQueue {
    queue : Vec<NextToProcess>
}

impl ProcessQueue {
    pub fn new() -> ProcessQueue {
        return ProcessQueue{queue:Vec::new()}
    }

    pub fn insert_item_left(&mut self,node:NextToProcess) {
        self.queue.insert(0,node);
    }

    pub fn insert_item_right(&mut self,node:NextToProcess) {
        self.queue.push(node);
    }

    pub fn get_next(&mut self) -> Option<NextToProcess> {
        if self.queue.len() > 0 {
            return Some( self.queue.remove(0) );
        } else {
            return None;
        }
    }

}