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rCore_stu/ch4/os/src/syscall/process.rs

21 lines
551 B
Rust

//! App management syscalls
// use crate::batch::run_next_app;
use crate::println;
use crate::task::{exit_current_and_run_next, suspend_current_and_run_next};
use crate::timer::get_time_ms;
/// 任务退出, 并立即切换任务
pub fn sys_exit(exit_code: i32) -> ! {
println!("[kernel] Application exited with code {}", exit_code);
exit_current_and_run_next();
panic!("Unreachable in sys_exit!");
}
pub fn sys_yield() -> isize {
suspend_current_and_run_next();
0
}
pub fn sys_get_time() -> isize {
get_time_ms() as isize
}