From 2c497f70c27fdb6ce48aa46891f788ffde9ed5b9 Mon Sep 17 00:00:00 2001
From: VAN BOSSUYT Nicolas <me@smnx.sh>
Date: Thu, 2 Jan 2025 16:24:32 +0100
Subject: [PATCH] hjert-core: Added a small fast path in Task::block().

---
 src/kernel/hjert-core/task.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/kernel/hjert-core/task.cpp b/src/kernel/hjert-core/task.cpp
index 2dad8a7ef6c..757b364899a 100644
--- a/src/kernel/hjert-core/task.cpp
+++ b/src/kernel/hjert-core/task.cpp
@@ -57,6 +57,10 @@ Res<> Task::ready(usize ip, usize sp, Hj::Args args) {
 }
 
 Res<> Task::block(Blocker blocker) {
+    // NOTE: If the blocker is already expired, don't block.
+    if (blocker() <= globalSched()._stamp)
+        return Ok();
+
     // NOTE: Can't use ObjectLockScope here because
     //       we need to yield outside of the lock.
     _lock.acquire();