/**
* Clears the map of all entries.
*/
public void clear()
{
for (int i = 0; i < buckets.Length; i++)
{
LockJ lockj = locks[i];
lock (lockj)
{
buckets[i] = null;
lockj.size = 0;
}
}
}
/**
* Initializes the map with a specified number of buckets. The number
* of buckets is never below 17, and is always an odd number (StaticBucketMap
* ensures this). The number of buckets is inversely proportional to the
* chances for thread contention. The fewer buckets, the more chances for
* thread contention. The more buckets the fewer chances for thread
* contention.
*
* @param numBuckets the number of buckets for this map
*/
public StaticBucketMap(int numBuckets)
{
int size = java.lang.Math.max(17, numBuckets);
// Ensure that bucketSize is never a power of 2 (to ensure maximal distribution)
if (size % 2 == 0)
{
size--;
}
buckets = new Node[size];
locks = new LockJ[size];
for (int i = 0; i < size; i++)
{
locks[i] = new LockJ();
}
}