[dubbo] branch master updated: polish code of DubboShutdownHook (#5835)

[ts...@apache.org]

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tswstarplanet pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/dubbo.git


The following commit(s) were added to refs/heads/master by this push:
     new 9fb69a5  polish code of DubboShutdownHook (#5835)
9fb69a5 is described below

commit 9fb69a5c078064c76640735afb86148eaabace5c
Author: tswstarplanet <ts...@apache.org>
AuthorDate: Sun Mar 8 00:19:27 2020 +0800

    polish code of DubboShutdownHook (#5835)
---
 .../src/main/java/org/apache/dubbo/config/DubboShutdownHook.java      | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/DubboShutdownHook.java b/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/DubboShutdownHook.java
index 50f2011..56dab50 100644
--- a/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/DubboShutdownHook.java
+++ b/dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/DubboShutdownHook.java
@@ -89,7 +89,7 @@ public class DubboShutdownHook extends Thread {
      * Register the ShutdownHook
      */
     public void register() {
-        if (!registered.get() && registered.compareAndSet(false, true)) {
+        if (registered.compareAndSet(false, true)) {
             DubboShutdownHook dubboShutdownHook = getDubboShutdownHook();
             Runtime.getRuntime().addShutdownHook(dubboShutdownHook);
             dispatch(new DubboShutdownHookRegisteredEvent(dubboShutdownHook));
@@ -100,7 +100,7 @@ public class DubboShutdownHook extends Thread {
      * Unregister the ShutdownHook
      */
     public void unregister() {
-        if (registered.get() && registered.compareAndSet(true, false)) {
+        if (registered.compareAndSet(true, false)) {
             DubboShutdownHook dubboShutdownHook = getDubboShutdownHook();
             Runtime.getRuntime().removeShutdownHook(dubboShutdownHook);
             dispatch(new DubboShutdownHookUnregisteredEvent(dubboShutdownHook));