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SerializerCache: remove synchronization when only _sharedMap is accessed with a read call #4459

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SerializerCache: remove synchronization when only _sharedMap is accessed with a read call #4459

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18 changes: 5 additions & 13 deletions src/main/java/com/fasterxml/jackson/databind/ser/SerializerCache.java
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ private final synchronized ReadOnlyClassToSerializerMap _makeReadOnlyLookupMap()
/**********************************************************
*/

public synchronized int size() {
public int size() {
return _sharedMap.size();
}

Expand All @@ -107,30 +107,22 @@ public synchronized int size() {
*/
public JsonSerializer<Object> untypedValueSerializer(Class<?> type)
{
synchronized (this) {
return _sharedMap.get(new TypeKey(type, false));
}
return _sharedMap.get(new TypeKey(type, false));
}

public JsonSerializer<Object> untypedValueSerializer(JavaType type)
{
synchronized (this) {
return _sharedMap.get(new TypeKey(type, false));
}
return _sharedMap.get(new TypeKey(type, false));
}

public JsonSerializer<Object> typedValueSerializer(JavaType type)
{
synchronized (this) {
return _sharedMap.get(new TypeKey(type, true));
}
return _sharedMap.get(new TypeKey(type, true));
}

public JsonSerializer<Object> typedValueSerializer(Class<?> cls)
{
synchronized (this) {
return _sharedMap.get(new TypeKey(cls, true));
}
return _sharedMap.get(new TypeKey(cls, true));
}

/*
Expand Down