From 3ad5b6df1a01c09da25a393d5857e99f71e5c179 Mon Sep 17 00:00:00 2001
From: Motoyuki Kimura <moymoymox@gmail.com>
Date: Mon, 22 Jul 2024 00:26:36 +0900
Subject: [PATCH] runtime: add cfg for loom specific code (#6694)

---
 tokio/src/runtime/blocking/pool.rs | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/tokio/src/runtime/blocking/pool.rs b/tokio/src/runtime/blocking/pool.rs
index 20b23e002..bc854f36d 100644
--- a/tokio/src/runtime/blocking/pool.rs
+++ b/tokio/src/runtime/blocking/pool.rs
@@ -264,8 +264,12 @@ impl BlockingPool {
 
             // Loom requires that execution be deterministic, so sort by thread ID before joining.
             // (HashMaps use a randomly-seeded hash function, so the order is nondeterministic)
-            let mut workers: Vec<(usize, thread::JoinHandle<()>)> = workers.into_iter().collect();
-            workers.sort_by_key(|(id, _)| *id);
+            #[cfg(loom)]
+            let workers: Vec<(usize, thread::JoinHandle<()>)> = {
+                let mut workers: Vec<_> = workers.into_iter().collect();
+                workers.sort_by_key(|(id, _)| *id);
+                workers
+            };
 
             for (_id, handle) in workers {
                 let _ = handle.join();