void directRemove(final Bytes keyBytes, int hash2) {
lock();
try {
hash2 = hashLookup.startSearch(hash2);
while (true) {
final int pos = hashLookup.nextPos();
if (pos < 0) {
return;
} else {
final long offset = entriesOffset + pos * entrySize;
tmpBytes.storePositionAndSize(bytes, offset, entrySize);
if (!keyEquals(keyBytes, tmpBytes)) continue;
final long keyLength =
align(keyBytes.remaining() + tmpBytes.position()); // includes the stop bit length.
tmpBytes.position(keyLength);
hashLookup.remove(hash2, pos);
decrementSize();
freeList.clear(pos);
if (pos < nextSet) nextSet = pos;
return;
}
}
} finally {
unlock();
}
}
synchronized boolean remove(long hash, K key) {
int h = smallMap.startSearch(hash);
boolean found = false;
while (true) {
int pos = smallMap.nextPos();
if (pos < 0) {
break;
}
bytes.storePositionAndSize(store, pos * smallEntrySize, smallEntrySize);
K key2 = getKey();
if (equals(key, key2)) {
usedSet.clear(pos);
smallMap.remove(h, pos);
found = true;
this.size--;
break;
}
}
K key2 = key instanceof CharSequence ? (K) key.toString() : key;
DirectStore remove = map.remove(key2);
if (remove == null) return found;
offHeapUsed -= remove.size();
remove.free();
this.size--;
return true;
}
/**
* implementation for map.remove(Key,Value)
*
* @param keyBytes the key of the entry to remove
* @param expectedValue the entry will only be removed if the {@param existingValue} equals null
* or the {@param existingValue} equals that of the entry.value
* @param hash2 a hash code relating to the {@keyBytes} ( not the natural hash of {@keyBytes} )
* @return
*/
V remove(final DirectBytes keyBytes, final V expectedValue, int hash2) {
lock();
try {
hash2 = hashLookup.startSearch(hash2);
while (true) {
final int pos = hashLookup.nextPos();
if (pos < 0) {
return null;
} else {
final long offset = entriesOffset + pos * entrySize;
tmpBytes.storePositionAndSize(bytes, offset, entrySize);
if (!keyEquals(keyBytes, tmpBytes)) continue;
final long keyLength =
align(keyBytes.remaining() + tmpBytes.position()); // includes the stop bit length.
tmpBytes.position(keyLength);
V valueRemoved =
expectedValue == null && removeReturnsNull
? null
: readObjectUsing(null, offset + keyLength);
if (expectedValue != null && !expectedValue.equals(valueRemoved)) return null;
hashLookup.remove(hash2, pos);
decrementSize();
freeList.clear(pos);
if (pos < nextSet) nextSet = pos;
return valueRemoved;
}
}
} finally {
unlock();
}
}
