| use super::abi::usercalls::{alloc, raw::ByteBuffer}; |
| use crate::ffi::OsString; |
| use crate::slice; |
| use crate::sync::atomic::{AtomicUsize, Ordering}; |
| use crate::sys::os_str::Buf; |
| use crate::sys_common::FromInner; |
| |
| #[cfg_attr(test, linkage = "available_externally")] |
| #[export_name = "_ZN16__rust_internals3std3sys3sgx4args4ARGSE"] |
| static ARGS: AtomicUsize = AtomicUsize::new(0); |
| type ArgsStore = Vec<OsString>; |
| |
| #[cfg_attr(test, allow(dead_code))] |
| pub unsafe fn init(argc: isize, argv: *const *const u8) { |
| if argc != 0 { |
| let args = alloc::User::<[ByteBuffer]>::from_raw_parts(argv as _, argc as _); |
| let args = args |
| .iter() |
| .map(|a| OsString::from_inner(Buf { inner: a.copy_user_buffer() })) |
| .collect::<ArgsStore>(); |
| ARGS.store(Box::into_raw(Box::new(args)) as _, Ordering::Relaxed); |
| } |
| } |
| |
| pub unsafe fn cleanup() {} |
| |
| pub fn args() -> Args { |
| let args = unsafe { (ARGS.load(Ordering::Relaxed) as *const ArgsStore).as_ref() }; |
| if let Some(args) = args { Args(args.iter()) } else { Args([].iter()) } |
| } |
| |
| pub struct Args(slice::Iter<'static, OsString>); |
| |
| impl Args { |
| pub fn inner_debug(&self) -> &[OsString] { |
| self.0.as_slice() |
| } |
| } |
| |
| impl Iterator for Args { |
| type Item = OsString; |
| fn next(&mut self) -> Option<OsString> { |
| self.0.next().cloned() |
| } |
| fn size_hint(&self) -> (usize, Option<usize>) { |
| self.0.size_hint() |
| } |
| } |
| |
| impl ExactSizeIterator for Args { |
| fn len(&self) -> usize { |
| self.0.len() |
| } |
| } |
| |
| impl DoubleEndedIterator for Args { |
| fn next_back(&mut self) -> Option<OsString> { |
| self.0.next_back().cloned() |
| } |
| } |