blob: 0817019db481c8c5adddb4ffdc8f94740c4a8e51 (
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
69
70
71
72
73
74
75
76
77
78
79
|
//! Thread local runtime context
use crate::runtime::Handle;
use std::cell::RefCell;
thread_local! {
static CONTEXT: RefCell<Option<Handle>> = RefCell::new(None)
}
pub(crate) fn current() -> Option<Handle> {
CONTEXT.with(|ctx| ctx.borrow().clone())
}
cfg_io_driver! {
pub(crate) fn io_handle() -> crate::runtime::driver::IoHandle {
CONTEXT.with(|ctx| match *ctx.borrow() {
Some(ref ctx) => ctx.io_handle.clone(),
None => Default::default(),
})
}
}
cfg_signal_internal! {
#[cfg(unix)]
pub(crate) fn signal_handle() -> crate::runtime::driver::SignalHandle {
CONTEXT.with(|ctx| match *ctx.borrow() {
Some(ref ctx) => ctx.signal_handle.clone(),
None => Default::default(),
})
}
}
cfg_time! {
pub(crate) fn time_handle() -> crate::runtime::driver::TimeHandle {
CONTEXT.with(|ctx| match *ctx.borrow() {
Some(ref ctx) => ctx.time_handle.clone(),
None => Default::default(),
})
}
cfg_test_util! {
pub(crate) fn clock() -> Option<crate::runtime::driver::Clock> {
CONTEXT.with(|ctx| match *ctx.borrow() {
Some(ref ctx) => Some(ctx.clock.clone()),
None => None,
})
}
}
}
cfg_rt! {
pub(crate) fn spawn_handle() -> Option<crate::runtime::Spawner> {
CONTEXT.with(|ctx| match *ctx.borrow() {
Some(ref ctx) => Some(ctx.spawner.clone()),
None => None,
})
}
}
/// Set this [`Handle`] as the current active [`Handle`].
///
/// [`Handle`]: Handle
pub(crate) fn enter(new: Handle) -> EnterGuard {
CONTEXT.with(|ctx| {
let old = ctx.borrow_mut().replace(new);
EnterGuard(old)
})
}
#[derive(Debug)]
pub(crate) struct EnterGuard(Option<Handle>);
impl Drop for EnterGuard {
fn drop(&mut self) {
CONTEXT.with(|ctx| {
*ctx.borrow_mut() = self.0.take();
});
}
}
|
