Geek asks and answers

Do I need a synchronous call to the thread safety function?

If I use ConcurrentHashMap (where put is thread safe) and I provide a public function myPut that uses ConcurrentHashMap - do I need to synchronize my function?

Meaning: Should this be synchronized?

ConcurrentHashMap map;  
public void myPut(int something) {  
   this.map.put(something);  
}
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5 answers

Concurrency Utilities, such as ConcurrentHashMap, are designed so that you do not need to synchronize: they will handle stream access internally.

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-Patrick

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You only need to synchronize this method if you need to do this in order to make the class stream safe for other reasons - at this point you may need to ask if the overhead is worth it ConcurrentHashMap.

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