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use crate::collector::{Collector, LocalHandle};
use crate::guard::Guard;
use crate::primitive::{lazy_static, thread_local};
lazy_static! {
static ref COLLECTOR: Collector = Collector::new();
}
thread_local! {
static HANDLE: LocalHandle = COLLECTOR.register();
}
#[inline]
pub fn pin() -> Guard {
with_handle(|handle| handle.pin())
}
#[inline]
pub fn is_pinned() -> bool {
with_handle(|handle| handle.is_pinned())
}
pub fn default_collector() -> &'static Collector {
&COLLECTOR
}
#[inline]
fn with_handle<F, R>(mut f: F) -> R
where
F: FnMut(&LocalHandle) -> R,
{
HANDLE
.try_with(|h| f(h))
.unwrap_or_else(|_| f(&COLLECTOR.register()))
}
#[cfg(all(test, not(crossbeam_loom)))]
mod tests {
use crossbeam_utils::thread;
#[test]
fn pin_while_exiting() {
struct Foo;
impl Drop for Foo {
fn drop(&mut self) {
super::pin();
}
}
thread_local! {
static FOO: Foo = Foo;
}
thread::scope(|scope| {
scope.spawn(|_| {
FOO.with(|_| ());
super::pin();
});
})
.unwrap();
}
}