From 2dc6ba27b5bbb4b5aca064d007b8305636422c5d Mon Sep 17 00:00:00 2001
From: joboet <jonasboettiger@icloud.com>
Date: Wed, 18 Oct 2023 16:21:21 +0200
Subject: [PATCH] std: send free message when xous thread parker is dropped

---
 library/std/src/sys/xous/thread_parking.rs | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/library/std/src/sys/xous/thread_parking.rs b/library/std/src/sys/xous/thread_parking.rs
index 3e77ecf0c73..aa39c6d2718 100644
--- a/library/std/src/sys/xous/thread_parking.rs
+++ b/library/std/src/sys/xous/thread_parking.rs
@@ -1,4 +1,4 @@
-use crate::os::xous::ffi::blocking_scalar;
+use crate::os::xous::ffi::{blocking_scalar, scalar};
 use crate::os::xous::services::{ticktimer_server, TicktimerScalar};
 use crate::pin::Pin;
 use crate::ptr;
@@ -86,3 +86,9 @@ impl Parker {
         }
     }
 }
+
+impl Drop for Parker {
+    fn drop(&mut self) {
+        scalar(ticktimer_server(), TicktimerScalar::FreeCondition(self.index()).into()).ok();
+    }
+}