logback-android/src/main/java/ch/qos/logback/core/spi/AbstractComponentTracker.java
public synchronized C getOrCreate(String key, long timestamp) {
    Entry<C> entry = getFromEitherMap(key);
    if (entry == null) {
      C c = buildComponent(key);
      entry = new Entry<C>(key, c, timestamp);
      // new entries go into the main map
      liveMap.put(key, entry);
    } else {
      entry.setTimestamp(timestamp);
    }
    return entry.component;
  }
public synchronized C getOrCreate(String key, long timestamp) {
    Entry<C> entry = getFromEitherMap(key);
    if (entry == null) {
      C c = buildComponent(key);
      entry = new Entry<C>(key, c, timestamp);
      // new entries go into the main map
      liveMap.put(key, entry);
    } else {
      entry.setTimestamp(timestamp);
    }
    return entry.component;
  }
public synchronized C getOrCreate ( String key , long timestamp ) { Entry < C > entry = getFromEitherMap ( key ) ; if ( entry == null ) { C c = buildComponent ( key ) ; entry = new Entry < C > ( key , c , timestamp ) ; // new entries go into the main map liveMap . put ( key , entry ) ; } else { entry . setTimestamp ( timestamp ) ; } return entry . component ; }
{@inheritDoc}

<p>Note that this method is atomic, i.e. synchronized.</p>

@param key {@inheritDoc}
@param timestamp {@inheritDoc}
@return {@inheritDoc}
{ @inheritDoc }