建议将 synchronized 块替换为 ReentrantLock

Author: rui8832Created Apr 7, 2026Updated Apr 22, 2026

建议增加的新功能:

建议将 synchronized 块替换为 ReentrantLock，避免虚拟线程被固定到载体线程上。

java

 class X {
   private final ReentrantLock lock = new ReentrantLock();
   // ...

   public void m() {
     lock.lock();  // block until condition holds
     try {
       // ... method body
     } finally {
       lock.unlock();
     }
   }
 }

参考：Virtual Threads: Avoid Lengthy and Frequent Pinning。

应用场景阐述：

使用 Java 21 虚拟线程。

Source: dromara/Sa-Token

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