From e2ddba92f7f3f9e64da10e8351e335989f388109 Mon Sep 17 00:00:00 2001
From: ibuki2003 <main@fuwa.dev>
Date: Sun, 26 Jan 2025 17:23:41 +0900
Subject: [PATCH] embassy-sync: fix clear() to wake senders

---
 embassy-sync/src/channel.rs          | 3 +++
 embassy-sync/src/priority_channel.rs | 3 +++
 embassy-sync/src/pubsub/mod.rs       | 3 +++
 embassy-sync/src/zerocopy_channel.rs | 3 +++
 4 files changed, 12 insertions(+)

diff --git a/embassy-sync/src/channel.rs b/embassy-sync/src/channel.rs
index 18b053111..9a7d2fa2f 100644
--- a/embassy-sync/src/channel.rs
+++ b/embassy-sync/src/channel.rs
@@ -562,6 +562,9 @@ impl<T, const N: usize> ChannelState<T, N> {
     }
 
     fn clear(&mut self) {
+        if self.queue.is_full() {
+            self.senders_waker.wake();
+        }
         self.queue.clear();
     }
 
diff --git a/embassy-sync/src/priority_channel.rs b/embassy-sync/src/priority_channel.rs
index d466a22ff..36959204f 100644
--- a/embassy-sync/src/priority_channel.rs
+++ b/embassy-sync/src/priority_channel.rs
@@ -411,6 +411,9 @@ where
     }
 
     fn clear(&mut self) {
+        if self.queue.len() == self.queue.capacity() {
+            self.senders_waker.wake();
+        }
         self.queue.clear();
     }
 
diff --git a/embassy-sync/src/pubsub/mod.rs b/embassy-sync/src/pubsub/mod.rs
index a2360a1d8..606efff0a 100644
--- a/embassy-sync/src/pubsub/mod.rs
+++ b/embassy-sync/src/pubsub/mod.rs
@@ -421,6 +421,9 @@ impl<T: Clone, const CAP: usize, const SUBS: usize, const PUBS: usize> PubSubSta
     }
 
     fn clear(&mut self) {
+        if self.is_full() {
+            self.publisher_wakers.wake();
+        }
         self.queue.clear();
     }
 
diff --git a/embassy-sync/src/zerocopy_channel.rs b/embassy-sync/src/zerocopy_channel.rs
index 56433cd8a..15914578e 100644
--- a/embassy-sync/src/zerocopy_channel.rs
+++ b/embassy-sync/src/zerocopy_channel.rs
@@ -287,6 +287,9 @@ impl State {
     }
 
     fn clear(&mut self) {
+        if self.full {
+            self.receive_waker.wake();
+        }
         self.front = 0;
         self.back = 0;
         self.full = false;