From a990de90fe41456a23e58bd087d2f107d321f3a1 Mon Sep 17 00:00:00 2001 From: Valentin Popov Date: Fri, 19 Jul 2024 16:37:58 +0400 Subject: Deleted vendor folder --- vendor/syn/src/thread.rs | 60 ------------------------------------------------ 1 file changed, 60 deletions(-) delete mode 100644 vendor/syn/src/thread.rs (limited to 'vendor/syn/src/thread.rs') 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 { - value: T, - thread_id: ThreadId, -} - -unsafe impl Sync for ThreadBound {} - -// 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 Send for ThreadBound {} - -impl ThreadBound { - 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 Debug for ThreadBound { - 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 Copy for ThreadBound {} - -impl Clone for ThreadBound { - fn clone(&self) -> Self { - *self - } -} -- cgit v1.2.3