1 use super::abi::usercalls::{alloc, raw::ByteBuffer};
2 use crate::ffi::OsString;
4 use crate::sync::atomic::{AtomicUsize, Ordering};
5 use crate::sys::os_str::Buf;
6 use crate::sys_common::FromInner;
8 #[cfg_attr(test, linkage = "available_externally")]
9 #[export_name = "_ZN16__rust_internals3std3sys3sgx4args4ARGSE"]
10 static ARGS: AtomicUsize = AtomicUsize::new(0);
11 type ArgsStore = Vec<OsString>;
13 #[cfg_attr(test, allow(dead_code))]
14 pub unsafe fn init(argc: isize, argv: *const *const u8) {
16 let args = unsafe { alloc::User::<[ByteBuffer]>::from_raw_parts(argv as _, argc as _) };
19 .map(|a| OsString::from_inner(Buf { inner: a.copy_user_buffer() }))
20 .collect::<ArgsStore>();
21 ARGS.store(Box::into_raw(Box::new(args)) as _, Ordering::Relaxed);
25 pub unsafe fn cleanup() {}
27 pub fn args() -> Args {
28 let args = unsafe { (ARGS.load(Ordering::Relaxed) as *const ArgsStore).as_ref() };
29 if let Some(args) = args { Args(args.iter()) } else { Args([].iter()) }
32 pub struct Args(slice::Iter<'static, OsString>);
35 pub fn inner_debug(&self) -> &[OsString] {
40 impl Iterator for Args {
42 fn next(&mut self) -> Option<OsString> {
43 self.0.next().cloned()
45 fn size_hint(&self) -> (usize, Option<usize>) {
50 impl ExactSizeIterator for Args {
51 fn len(&self) -> usize {
56 impl DoubleEndedIterator for Args {
57 fn next_back(&mut self) -> Option<OsString> {
58 self.0.next_back().cloned()