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use crate::config::{MAX_APP_NUM, MAX_SYSCALL_NUM};
use crate::task::{exit_current_and_run_next, suspend_current_and_run_next, TaskStatus};
use crate::timer::get_time_us;
#[repr(C)]
#[derive(Debug)]
pub struct TimeVal {
pub sec: usize,
pub usec: usize,
}
pub struct TaskInfo {
status: TaskStatus,
syscall_times: [u32; MAX_SYSCALL_NUM],
time: usize,
}
pub fn sys_exit(exit_code: i32) -> ! {
info!("[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(ts: *mut TimeVal, _tz: usize) -> isize {
let us = get_time_us();
unsafe {
*ts = TimeVal {
sec: us / 1_000_000,
usec: us % 1_000_000,
};
}
0
}
pub fn sys_task_info(ti: *mut TaskInfo) -> isize {
-1
}