From cabc0af64755b5253b8fbf6db408df636a992a3b Mon Sep 17 00:00:00 2001
From: yeshenyong <52573793+yeshenyong@users.noreply.github.com>
Date: Thu, 26 Feb 2026 22:23:47 +0800
Subject: [PATCH 1/2] [bugfix] fix USemaphore fake notify error cnt (#582)

---
 src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h b/src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h
index 3c53ba01..3180bfdf 100644
--- a/src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h
+++ b/src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h
@@ -35,7 +35,7 @@ class USemaphore : public UThreadObject {
     CVoid wait() {
         CGRAPH_UNIQUE_LOCK lk(mutex_);
         cnt_--;
-        if (cnt_ < 0) {
+        while (cnt_ < 0) {
             cv_.wait(lk);
         }
     }

From b2882efeca40d0400eb53614530b3e20ae3d8394 Mon Sep 17 00:00:00 2001
From: Chunel <Chunel@foxmail.com>
Date: Thu, 26 Feb 2026 22:27:45 +0800
Subject: [PATCH 2/2] [perf] change USemaphore cv.wait condition

---
 src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h b/src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h
index 3180bfdf..5247a9a0 100644
--- a/src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h
+++ b/src/UtilsCtrl/ThreadPool/Semaphore/USemaphore.h
@@ -35,13 +35,13 @@ class USemaphore : public UThreadObject {
     CVoid wait() {
         CGRAPH_UNIQUE_LOCK lk(mutex_);
         cnt_--;
-        while (cnt_ < 0) {
-            cv_.wait(lk);
-        }
+        cv_.wait(lk, [this] {
+            return cnt_ < 0;
+        });
     }
 
 private:
-    CInt cnt_ = 0;    // 记录当前的次数
+    CInt cnt_ { 0 };    // 记录当前的次数
     std::mutex mutex_;
     std::condition_variable cv_;
 };