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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/crossbeam-epoch/src/default.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/crossbeam-epoch/src/default.rs')
-rw-r--r--vendor/crossbeam-epoch/src/default.rs93
1 files changed, 0 insertions, 93 deletions
diff --git a/vendor/crossbeam-epoch/src/default.rs b/vendor/crossbeam-epoch/src/default.rs
deleted file mode 100644
index b42c1c7..0000000
--- a/vendor/crossbeam-epoch/src/default.rs
+++ /dev/null
@@ -1,93 +0,0 @@
-//! The default garbage collector.
-//!
-//! For each thread, a participant is lazily initialized on its first use, when the current thread
-//! is registered in the default collector. If initialized, the thread's participant will get
-//! destructed on thread exit, which in turn unregisters the thread.
-
-use crate::collector::{Collector, LocalHandle};
-use crate::guard::Guard;
-use crate::primitive::thread_local;
-#[cfg(not(crossbeam_loom))]
-use crate::sync::once_lock::OnceLock;
-
-fn collector() -> &'static Collector {
- #[cfg(not(crossbeam_loom))]
- {
- /// The global data for the default garbage collector.
- static COLLECTOR: OnceLock<Collector> = OnceLock::new();
- COLLECTOR.get_or_init(Collector::new)
- }
- // FIXME: loom does not currently provide the equivalent of Lazy:
- // https://github.com/tokio-rs/loom/issues/263
- #[cfg(crossbeam_loom)]
- {
- loom::lazy_static! {
- /// The global data for the default garbage collector.
- static ref COLLECTOR: Collector = Collector::new();
- }
- &COLLECTOR
- }
-}
-
-thread_local! {
- /// The per-thread participant for the default garbage collector.
- static HANDLE: LocalHandle = collector().register();
-}
-
-/// Pins the current thread.
-#[inline]
-pub fn pin() -> Guard {
- with_handle(|handle| handle.pin())
-}
-
-/// Returns `true` if the current thread is pinned.
-#[inline]
-pub fn is_pinned() -> bool {
- with_handle(|handle| handle.is_pinned())
-}
-
-/// Returns the default global collector.
-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) {
- // Pin after `HANDLE` has been dropped. This must not panic.
- super::pin();
- }
- }
-
- thread_local! {
- static FOO: Foo = Foo;
- }
-
- thread::scope(|scope| {
- scope.spawn(|_| {
- // Initialize `FOO` and then `HANDLE`.
- FOO.with(|_| ());
- super::pin();
- // At thread exit, `HANDLE` gets dropped first and `FOO` second.
- });
- })
- .unwrap();
- }
-}