30 lines
614 B
Rust
30 lines
614 B
Rust
#![no_std]
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#![no_main]
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#[macro_use]
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extern crate user_lib;
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use user_lib::{exit, fork, get_time, sleep, waitpid};
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fn sleepy() {
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let time: usize = 100;
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for i in 0..5 {
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sleep(time);
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println!("sleep {} x {} msecs.", i + 1, time);
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}
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exit(0);
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}
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#[no_mangle]
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pub fn main() -> i32 {
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let current_time = get_time();
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let pid = fork();
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let mut exit_code: i32 = 0;
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if pid == 0 {
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sleepy();
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}
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assert!(waitpid(pid as usize, &mut exit_code) == pid && exit_code == 0);
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println!("use {} msecs.", get_time() - current_time);
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println!("sleep pass.");
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0
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}
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