use crate::ty::query;
use rustc_data_structures::sync::{self, Lock};
use rustc_errors::Diagnostic;
+#[cfg(not(parallel_compiler))]
+use std::cell::Cell;
use std::mem;
use std::ptr;
use thin_vec::ThinVec;
}
}
+// Import the thread-local variable from Rayon, which is preserved for Rayon jobs.
#[cfg(parallel_compiler)]
-mod tlv {
- use rustc_rayon_core as rayon_core;
- use std::ptr;
-
- /// Gets Rayon's thread-local variable, which is preserved for Rayon jobs.
- /// This is used to get the pointer to the current `ImplicitCtxt`.
- #[inline]
- pub(super) fn get_tlv() -> *const () {
- ptr::from_exposed_addr(rayon_core::tlv::get())
- }
-
- /// Sets Rayon's thread-local variable, which is preserved for Rayon jobs
- /// to `value` during the call to `f`. It is restored to its previous value after.
- /// This is used to set the pointer to the new `ImplicitCtxt`.
- #[inline]
- pub(super) fn with_tlv<F: FnOnce() -> R, R>(value: *const (), f: F) -> R {
- rayon_core::tlv::with(value.expose_addr(), f)
- }
-}
+use rayon_core::tlv::TLV;
+// Otherwise define our own
#[cfg(not(parallel_compiler))]
-mod tlv {
- use std::cell::Cell;
- use std::ptr;
-
- thread_local! {
- /// A thread local variable that stores a pointer to the current `ImplicitCtxt`.
- static TLV: Cell<*const ()> = const { Cell::new(ptr::null()) };
- }
-
- /// Gets the pointer to the current `ImplicitCtxt`.
- #[inline]
- pub(super) fn get_tlv() -> *const () {
- TLV.with(|tlv| tlv.get())
- }
-
- /// Sets TLV to `value` during the call to `f`.
- /// It is restored to its previous value after.
- /// This is used to set the pointer to the new `ImplicitCtxt`.
- #[inline]
- pub(super) fn with_tlv<F: FnOnce() -> R, R>(value: *const (), f: F) -> R {
- let old = TLV.replace(value);
- let _reset = rustc_data_structures::OnDrop(move || TLV.set(old));
- f()
- }
+thread_local! {
+ /// A thread local variable that stores a pointer to the current `ImplicitCtxt`.
+ static TLV: Cell<*const ()> = const { Cell::new(ptr::null()) };
}
#[inline]
where
F: FnOnce() -> R,
{
- tlv::with_tlv(erase(context), f)
+ TLV.with(|tlv| {
+ let old = tlv.replace(erase(context));
+ let _reset = rustc_data_structures::OnDrop(move || tlv.set(old));
+ f()
+ })
}
/// Allows access to the current `ImplicitCtxt` in a closure if one is available.
where
F: for<'a, 'tcx> FnOnce(Option<&ImplicitCtxt<'a, 'tcx>>) -> R,
{
- let context = tlv::get_tlv();
+ let context = TLV.get();
if context.is_null() {
f(None)
} else {