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BeanFactoryAdvisorRetrievalHelper avoids synchronization for name cache 

Issue: SPR-16570
This commit is contained in:
Juergen Hoeller 2018-07-24 16:16:44 +02:00
parent 47d8fe83df
commit 7f1a8d78b5
1 changed files with 8 additions and 11 deletions
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19
spring-aop/src/main/java/org/springframework/aop/framework/autoproxy/BeanFactoryAdvisorRetrievalHelper.java
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@ -45,7 +45,7 @@ public class BeanFactoryAdvisorRetrievalHelper {
private final ConfigurableListableBeanFactory beanFactory;
@Nullable
private String[] cachedAdvisorBeanNames;
private volatile String[] cachedAdvisorBeanNames;
/**
@ -66,16 +66,13 @@ public class BeanFactoryAdvisorRetrievalHelper {
*/
public List<Advisor> findAdvisorBeans() {
// Determine list of advisor bean names, if not cached already.
String[] advisorNames = null;
synchronized (this) {
advisorNames = this.cachedAdvisorBeanNames;
if (advisorNames == null) {
// Do not initialize FactoryBeans here: We need to leave all regular beans
// uninitialized to let the auto-proxy creator apply to them!
advisorNames = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(
this.beanFactory, Advisor.class, true, false);
this.cachedAdvisorBeanNames = advisorNames;
}
String[] advisorNames = this.cachedAdvisorBeanNames;
if (advisorNames == null) {
// Do not initialize FactoryBeans here: We need to leave all regular beans
// uninitialized to let the auto-proxy creator apply to them!
advisorNames = BeanFactoryUtils.beanNamesForTypeIncludingAncestors(
this.beanFactory, Advisor.class, true, false);
this.cachedAdvisorBeanNames = advisorNames;
}
if (advisorNames.length == 0) {
return new ArrayList<>();