Rollup merge of #142384 - celinval:chores-rayon-mv, r=oli-obk

Bringing `rustc_rayon_core` in tree as `rustc_thread_pool`

This PR moves [`rustc_rayon_core`](https://github.com/rust-lang/rustc-rayon/tree/5fadf44/rayon-core) from commit `5fadf44` as suggested in [this zulip thread](https://rust-lang.zulipchat.com/#narrow/channel/187679-t-compiler.2Fparallel-rustc/topic/Bringing.20.60rustc_rayon_core.60.20in.20tree). I tried to split the work into separate commits so it is easy to review. The first commit is a simple copy and paste from the fork, and subsequent changes were made to use the new crate and to ensure the new crate complies with different format and lint expectations.

**Call-out:** I was also wondering if I need to make any further changes to accommodate licensing requirements.

r? oli-obk

1 files changed, 4 insertions, 4 deletions

diff --git a/compiler/rustc_interface/src/util.rs b/compiler/rustc_interface/src/util.rs
index 8bdc24d47d9..8a7d6117265 100644
--- a/compiler/rustc_interface/src/util.rs
+++ b/compiler/rustc_interface/src/util.rs
@@ -208,7 +208,7 @@ pub(crate) fn run_in_thread_pool_with_globals<
 
     let proxy_ = Arc::clone(&proxy);
     let proxy__ = Arc::clone(&proxy);
-    let builder = rayon_core::ThreadPoolBuilder::new()
+    let builder = rustc_thread_pool::ThreadPoolBuilder::new()
         .thread_name(|_| "rustc".to_string())
         .acquire_thread_handler(move || proxy_.acquire_thread())
         .release_thread_handler(move || proxy__.release_thread())
@@ -218,7 +218,7 @@ pub(crate) fn run_in_thread_pool_with_globals<
             // locals to it. The new thread runs the deadlock handler.
 
             let current_gcx2 = current_gcx2.clone();
-            let registry = rayon_core::Registry::current();
+            let registry = rustc_thread_pool::Registry::current();
             let session_globals = rustc_span::with_session_globals(|session_globals| {
                 session_globals as *const SessionGlobals as usize
             });
@@ -265,7 +265,7 @@ pub(crate) fn run_in_thread_pool_with_globals<
             builder
                 .build_scoped(
                     // Initialize each new worker thread when created.
-                    move |thread: rayon_core::ThreadBuilder| {
+                    move |thread: rustc_thread_pool::ThreadBuilder| {
                         // Register the thread for use with the `WorkerLocal` type.
                         registry.register();
 
@@ -274,7 +274,7 @@ pub(crate) fn run_in_thread_pool_with_globals<
                         })
                     },
                     // Run `f` on the first thread in the thread pool.
-                    move |pool: &rayon_core::ThreadPool| {
+                    move |pool: &rustc_thread_pool::ThreadPool| {
                         pool.install(|| f(current_gcx.into_inner(), proxy))
                     },
                 )