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Small Fix && cargo fmt

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This commit is contained in:
Yifan Wu 2022-01-22 12:40:54 -08:00
parent c9583b0f53
commit ae3ba9c26f
83 changed files with 1085 additions and 1079 deletions
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43
os/src/syscall/process.rs
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@ -1,23 +1,13 @@
use crate::fs::{open_file, OpenFlags};
use crate::mm::{translated_ref, translated_refmut, translated_str};
use crate::task::{
current_process, current_task, current_user_token, exit_current_and_run_next,
suspend_current_and_run_next,
exit_current_and_run_next,
current_task,
current_process,
current_user_token,
};
use crate::timer::get_time_ms;
use crate::mm::{
translated_str,
translated_refmut,
translated_ref,
};
use crate::fs::{
open_file,
OpenFlags,
};
use alloc::string::String;
use alloc::sync::Arc;
use alloc::vec::Vec;
use alloc::string::String;
pub fn sys_exit(exit_code: i32) -> ! {
exit_current_and_run_next(exit_code);
@ -61,7 +51,9 @@ pub fn sys_exec(path: *const u8, mut args: *const usize) -> isize {
break;
}
args_vec.push(translated_str(token, arg_str_ptr as *const u8));
unsafe { args = args.add(1); }
unsafe {
args = args.add(1);
}
}
if let Some(app_inode) = open_file(path.as_str(), OpenFlags::RDONLY) {
let all_data = app_inode.read_all();
@ -82,21 +74,20 @@ pub fn sys_waitpid(pid: isize, exit_code_ptr: *mut i32) -> isize {
// find a child process
let mut inner = process.inner_exclusive_access();
if inner.children
if inner
.children
.iter()
.find(|p| {pid == -1 || pid as usize == p.getpid()})
.is_none() {
.find(|p| pid == -1 || pid as usize == p.getpid())
.is_none()
{
return -1;
// ---- release current PCB
}
let pair = inner.children
.iter()
.enumerate()
.find(|(_, p)| {
// ++++ temporarily access child PCB exclusively
p.inner_exclusive_access().is_zombie && (pid == -1 || pid as usize == p.getpid())
// ++++ release child PCB
});
let pair = inner.children.iter().enumerate().find(|(_, p)| {
// ++++ temporarily access child PCB exclusively
p.inner_exclusive_access().is_zombie && (pid == -1 || pid as usize == p.getpid())
// ++++ release child PCB
});
if let Some((idx, _)) = pair {
let child = inner.children.remove(idx);
// confirm that child will be deallocated after being removed from children list