From 4748b2571fc02d5ebbfe59e457f0e8d8ef0eb5f3 Mon Sep 17 00:00:00 2001
From: Carl Lerche <me@carllerche.com>
Date: Wed, 6 May 2020 19:02:07 -0700
Subject: rt: simplify coop implementation (#2498)

Simplifies coop implementation. Prunes unused code, create a `Budget`
type to track the current budget.
---
 tokio/src/sync/rwlock.rs | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

(limited to 'tokio/src/sync/rwlock.rs')

diff --git a/tokio/src/sync/rwlock.rs b/tokio/src/sync/rwlock.rs
index 68cf710e..4e2fb74d 100644
--- a/tokio/src/sync/rwlock.rs
+++ b/tokio/src/sync/rwlock.rs
@@ -1,4 +1,3 @@
-use crate::coop::CoopFutureExt;
 use crate::sync::batch_semaphore::{AcquireError, Semaphore};
 use std::cell::UnsafeCell;
 use std::ops;
@@ -116,7 +115,7 @@ impl<'a, T> ReleasingPermit<'a, T> {
         lock: &'a RwLock<T>,
         num_permits: u16,
     ) -> Result<ReleasingPermit<'a, T>, AcquireError> {
-        lock.s.acquire(num_permits).cooperate().await?;
+        lock.s.acquire(num_permits).await?;
         Ok(Self { num_permits, lock })
     }
 }
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