public override bool PutIfNotExists(K key, V value)
{
Object writeLock = GetWriteLock();
lock (writeLock)
{
TempHashMap <MapEntry <K, V>, K, V> backupMap = CreateCopy();
// Write new data in the copied structure
if (!backupMap.PutIfNotExists(key, value))
{
return(false);
}
SaveCopy(backupMap);
return(true);
}
}
public override void Clear()
{
Object writeLock = GetWriteLock();
lock (writeLock)
{
if (Count == 0)
{
return;
}
TempHashMap <IMapEntry <K, V>, K, V> backupMap = CreateCopy();
// Write new data in the copied structure
backupMap.Clear();
SaveCopy(backupMap);
}
}
protected TempHashMap <IMapEntry <K, V>, K, V> CreateCopy()
{
// Copy existing data in FULLY NEW STRUCTURE
IMapEntry <K, V>[] table = this.table;
TempHashMap <IMapEntry <K, V>, K, V> backupMap = CreateEmptyInstance();
if (AutoCleanupNullValue)
{
for (int a = table.Length; a-- > 0;)
{
IMapEntry <K, V> entry = table[a];
while (entry != null)
{
K key = entry.Key;
if (key != null)
{
V value = entry.Value;
WeakReference valueAsRef = value as WeakReference;
if (valueAsRef.Target != null)
{
// Only copy the entry if the value content is still valid
backupMap.Put(CloneKey(key), CloneValue(value));
}
}
entry = entry.NextEntry;
}
}
}
else
{
for (int a = table.Length; a-- > 0;)
{
IMapEntry <K, V> entry = table[a];
while (entry != null)
{
K key = entry.Key;
if (key != null)
{
V value = entry.Value;
backupMap.Put(CloneKey(key), CloneValue(value));
}
entry = entry.NextEntry;
}
}
}
return(backupMap);
}
