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os_test_framework/
platform.rs

1use core::fmt::Arguments;
2
3use alloc::boxed::Box;
4use spin::{Mutex, Once};
5
6static PLATFORM: Once<Mutex<Box<dyn Platform>>> = Once::new();
7
8pub fn init_platform(platform: impl Platform + 'static) {
9    PLATFORM.call_once(|| Mutex::new(Box::new(platform)));
10}
11
12pub fn platform() -> &'static Mutex<Box<dyn Platform>> {
13    try_platform().expect("os-test-framework platform not initialized")
14}
15
16pub fn try_platform() -> Option<&'static Mutex<Box<dyn Platform>>> {
17    PLATFORM.get()
18}
19
20pub enum ExitState {
21    Success,
22    Failed,
23}
24
25pub trait Platform: Send + Sync {
26    fn print(&mut self, args: Arguments);
27    fn exit(&self, state: ExitState) -> !;
28}