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DefaultListableBeanFactory switches to thread-safe copying for names collections if necessary

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Issue: SPR-13493
Issue: SPR-13123
Issue: SPR-12503
This commit is contained in:
Juergen Hoeller
2015-09-25 15:20:40 +02:00
parent 627393a155
commit 097bcfb997
3 changed files with 104 additions and 21 deletions
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10
spring-beans/src/main/java/org/springframework/beans/factory/support/AbstractBeanFactory.java
View File

@@ -1535,6 +1535,16 @@ public abstract class AbstractBeanFactory extends FactoryBeanRegistrySupport imp
}
}
/**
* Check whether this factory's bean creation phase already started,
* i.e. whether any bean has been marked as created in the meantime.
* @since 4.2.2
* @see #markBeanAsCreated
*/
protected boolean hasBeanCreationStarted() {
return !this.alreadyCreated.isEmpty();
}
/**
* Get the object for the given bean instance, either the bean
* instance itself or its created object in case of a FactoryBean.

73
spring-beans/src/main/java/org/springframework/beans/factory/support/DefaultListableBeanFactory.java
View File

@@ -155,7 +155,7 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
private AutowireCandidateResolver autowireCandidateResolver = new SimpleAutowireCandidateResolver();
/** Map from dependency type to corresponding autowired value */
private final Map<Class<?>, Object> resolvableDependencies = new HashMap<Class<?>, Object>(16);
private final Map<Class<?>, Object> resolvableDependencies = new ConcurrentHashMap<Class<?>, Object>(16);
/** Map of bean definition objects, keyed by bean name */
private final Map<String, BeanDefinition> beanDefinitionMap = new ConcurrentHashMap<String, BeanDefinition>(64);
@@ -167,16 +167,16 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
private final Map<Class<?>, String[]> singletonBeanNamesByType = new ConcurrentHashMap<Class<?>, String[]>(64);
/** List of bean definition names, in registration order */
private final List<String> beanDefinitionNames = new ArrayList<String>(64);
private volatile List<String> beanDefinitionNames = new ArrayList<String>(64);
/** List of names of manually registered singletons, in registration order */
private final Set<String> manualSingletonNames = new LinkedHashSet<String>(16);
/** Whether bean definition metadata may be cached for all beans */
private boolean configurationFrozen = false;
private volatile Set<String> manualSingletonNames = new LinkedHashSet<String>(16);
/** Cached array of bean definition names in case of frozen configuration */
private String[] frozenBeanDefinitionNames;
private volatile String[] frozenBeanDefinitionNames;
/** Whether bean definition metadata may be cached for all beans */
private volatile boolean configurationFrozen = false;
/**
@@ -848,13 +848,32 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
"] with [" + beanDefinition + "]");
}
}
this.beanDefinitionMap.put(beanName, beanDefinition);
}
else {
this.beanDefinitionNames.add(beanName);
this.manualSingletonNames.remove(beanName);
if (hasBeanCreationStarted()) {
// Cannot modify startup-time collection elements anymore (for stable iteration)
synchronized (this.beanDefinitionMap) {
this.beanDefinitionMap.put(beanName, beanDefinition);
List<String> updatedDefinitions = new ArrayList<String>(this.beanDefinitionNames.size() + 1);
updatedDefinitions.addAll(this.beanDefinitionNames);
updatedDefinitions.add(beanName);
this.beanDefinitionNames = updatedDefinitions;
if (this.manualSingletonNames.contains(beanName)) {
Set<String> updatedSingletons = new LinkedHashSet<String>(this.manualSingletonNames);
updatedSingletons.remove(beanName);
this.manualSingletonNames = updatedSingletons;
}
}
}
else {
// Still in startup registration phase
this.beanDefinitionMap.put(beanName, beanDefinition);
this.beanDefinitionNames.add(beanName);
this.manualSingletonNames.remove(beanName);
}
this.frozenBeanDefinitionNames = null;
}
this.beanDefinitionMap.put(beanName, beanDefinition);
if (oldBeanDefinition != null || containsSingleton(beanName)) {
resetBeanDefinition(beanName);
@@ -872,7 +891,19 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
}
throw new NoSuchBeanDefinitionException(beanName);
}
this.beanDefinitionNames.remove(beanName);
if (hasBeanCreationStarted()) {
// Cannot modify startup-time collection elements anymore (for stable iteration)
synchronized (this.beanDefinitionMap) {
List<String> updatedDefinitions = new ArrayList<String>(this.beanDefinitionNames);
updatedDefinitions.remove(beanName);
this.beanDefinitionNames = updatedDefinitions;
}
}
else {
// Still in startup registration phase
this.beanDefinitionNames.remove(beanName);
}
this.frozenBeanDefinitionNames = null;
resetBeanDefinition(beanName);
@@ -914,9 +945,25 @@ public class DefaultListableBeanFactory extends AbstractAutowireCapableBeanFacto
@Override
public void registerSingleton(String beanName, Object singletonObject) throws IllegalStateException {
super.registerSingleton(beanName, singletonObject);
if (!this.beanDefinitionMap.containsKey(beanName)) {
this.manualSingletonNames.add(beanName);
if (hasBeanCreationStarted()) {
// Cannot modify startup-time collection elements anymore (for stable iteration)
synchronized (this.beanDefinitionMap) {
if (!this.beanDefinitionMap.containsKey(beanName)) {
Set<String> updatedSingletons = new LinkedHashSet<String>(this.manualSingletonNames.size() + 1);
updatedSingletons.addAll(this.manualSingletonNames);
updatedSingletons.add(beanName);
this.manualSingletonNames = updatedSingletons;
}
}
}
else {
// Still in startup registration phase
if (!this.beanDefinitionMap.containsKey(beanName)) {
this.manualSingletonNames.add(beanName);
}
}
clearByTypeCache();
}