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-rw-r--r--vendor/syn/src/thread.rs60
1 files changed, 0 insertions, 60 deletions
diff --git a/vendor/syn/src/thread.rs b/vendor/syn/src/thread.rs
deleted file mode 100644
index b33d248..0000000
--- a/vendor/syn/src/thread.rs
+++ /dev/null
@@ -1,60 +0,0 @@
-use std::fmt::{self, Debug};
-use std::thread::{self, ThreadId};
-
-/// ThreadBound is a Sync-maker and Send-maker that allows accessing a value
-/// of type T only from the original thread on which the ThreadBound was
-/// constructed.
-pub(crate) struct ThreadBound<T> {
- value: T,
- thread_id: ThreadId,
-}
-
-unsafe impl<T> Sync for ThreadBound<T> {}
-
-// Send bound requires Copy, as otherwise Drop could run in the wrong place.
-//
-// Today Copy and Drop are mutually exclusive so `T: Copy` implies `T: !Drop`.
-// This impl needs to be revisited if that restriction is relaxed in the future.
-unsafe impl<T: Copy> Send for ThreadBound<T> {}
-
-impl<T> ThreadBound<T> {
- pub(crate) fn new(value: T) -> Self {
- ThreadBound {
- value,
- thread_id: thread::current().id(),
- }
- }
-
- pub(crate) fn get(&self) -> Option<&T> {
- if thread::current().id() == self.thread_id {
- Some(&self.value)
- } else {
- None
- }
- }
-}
-
-impl<T: Debug> Debug for ThreadBound<T> {
- fn fmt(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
- match self.get() {
- Some(value) => Debug::fmt(value, formatter),
- None => formatter.write_str("unknown"),
- }
- }
-}
-
-// Copy the bytes of T, even if the currently running thread is the "wrong"
-// thread. This is fine as long as the original thread is not simultaneously
-// mutating this value via interior mutability, which would be a data race.
-//
-// Currently `T: Copy` is sufficient to guarantee that T contains no interior
-// mutability, because _all_ interior mutability in Rust is built on
-// std::cell::UnsafeCell, which has no Copy impl. This impl needs to be
-// revisited if that restriction is relaxed in the future.
-impl<T: Copy> Copy for ThreadBound<T> {}
-
-impl<T: Copy> Clone for ThreadBound<T> {
- fn clone(&self) -> Self {
- *self
- }
-}