pc-timer 0.1.8

Intel 8253 programming-based timer.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45

#![deny(warnings)]
#![doc(test(attr(deny(warnings))))]
#![doc(test(attr(allow(dead_code))))]
#![doc(test(attr(allow(unused_variables))))]

#![no_std]

#[cfg(not(target_os="dos"))]
mod stub;

#[cfg(not(target_os="dos"))]
use stub::*;

#[cfg(target_os="dos")]
mod dos;

#[cfg(target_os="dos")]
use dos::*;

pub struct Timer(());

impl Timer {
    /// # Safety
    ///
    /// This function may not be called while another [`Timer`] instance is alive.
    /// Also, it should be guaranteed that it is compiled for an effectively single-core processor.
    pub unsafe fn new(frequency: u16) -> Timer {
        init(frequency);
        Timer(())
    }

    pub fn ticks(&self) -> u64 {
        unsafe {
            ticks()
        }
    }
}

impl Drop for Timer {
    fn drop(&mut self) {
        unsafe {
            done();
        }
    }
}