blob: a84ab4138761ef6fd672e59c3c9e5aabe045eeea (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
use super::abi::usercalls::{alloc, raw::ByteBuffer};
use crate::ffi::OsString;
use crate::sync::atomic::{AtomicUsize, Ordering};
use crate::sys::os_str::Buf;
use crate::sys_common::FromInner;
use crate::slice;
#[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() {
let args = ARGS.swap(0, Ordering::Relaxed);
if args != 0 {
drop(Box::<ArgsStore>::from_raw(args as _))
}
}
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()
}
}
|
