From 2ece98655df116531b5268e43687f649484be3bc Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?11=E6=9D=A5=E4=BA=86?= Date: Tue, 10 Dec 2024 13:59:09 +0800 Subject: [PATCH] =?UTF-8?q?[docs=20update]=E8=A1=A5=E5=85=85=E5=81=8F?= =?UTF-8?q?=E5=90=91=E9=94=81=E5=BA=9F=E5=BC=83=E6=97=B6=E9=97=B4=E7=82=B9?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- docs/java/concurrent/java-concurrent-questions-02.md | 2 ++ 1 file changed, 2 insertions(+) diff --git a/docs/java/concurrent/java-concurrent-questions-02.md b/docs/java/concurrent/java-concurrent-questions-02.md index cc039431..143fd5a4 100644 --- a/docs/java/concurrent/java-concurrent-questions-02.md +++ b/docs/java/concurrent/java-concurrent-questions-02.md @@ -577,6 +577,8 @@ public class SynchronizedDemo2 { Open JDK 官方声明：[JEP 374: Deprecate and Disable Biased Locking](https://openjdk.org/jeps/374) +在 JDK15 中，偏向锁被默认关闭（仍然可以使用 `-XX:+UseBiasedLocking` 启用偏向锁），在 JDK18 中，偏向锁已经被彻底废弃（无法通过命令行打开）。 + 在官方声明中，主要原因有两个方面： - **性能收益不明显：**