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//use crate::drivers::{KEYBOARD_DEVICE,MOUSE_DEVICE,INPUT_CONDVAR,read_input_event};
use crate::drivers::{KEYBOARD_DEVICE, MOUSE_DEVICE};
use crate::task::current_task;

pub fn sys_event_get() -> isize {
    trace!(
        "kernel:pid[{}] sys_event_get",
        current_task().unwrap().process.upgrade().unwrap().getpid()
    );
    let kb = KEYBOARD_DEVICE.clone();
    let mouse = MOUSE_DEVICE.clone();
    //let input=INPUT_CONDVAR.clone();
    //read_input_event() as isize
    if !kb.is_empty() {
        kb.read_event() as isize
    } else if !mouse.is_empty() {
        mouse.read_event() as isize
    } else {
        0
    }
}

use crate::drivers::chardev::UART;

/// check UART's read-buffer is empty or not
pub fn sys_key_pressed() -> isize {
    trace!(
        "kernel:pid[{}] sys_key_pressed",
        current_task().unwrap().process.upgrade().unwrap().getpid()
    );
    let res = !UART.read_buffer_is_empty();
    if res {
        1
    } else {
        0
    }
}