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Fix user_shell

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This commit is contained in:
Yifan Wu 2021-02-08 16:46:20 +08:00
parent 1cc7293e96
commit fd4e3305bc
1 changed files with 5 additions and 13 deletions
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18
user/src/bin/user_shell.rs
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@ -12,7 +12,7 @@ const DL: u8 = 0x7fu8;
const BS: u8 = 0x08u8;
use alloc::string::String;
use user_lib::{fork, exec, waitpid, yield_};
use user_lib::{fork, exec, waitpid};
use user_lib::console::getchar;
#[no_mangle]
@ -36,18 +36,10 @@ pub fn main() -> i32 {
}
unreachable!();
} else {
let mut xstate: i32 = 0;
let mut exit_pid: isize;
loop {
exit_pid = waitpid(pid as usize, &mut xstate);
if exit_pid == -1 {
yield_();
} else {
assert_eq!(pid, exit_pid);
println!("Shell: Process {} exited with code {}", pid, xstate);
break;
}
}
let mut exit_code: i32 = 0;
let exit_pid = waitpid(pid as usize, &mut exit_code);
assert_eq!(pid, exit_pid);
println!("Shell: Process {} exited with code {}", pid, exit_code);
}
line.clear();
}