public void put(KvSource kv, int keyHashCode) throws SerDeException {
if (resizeThreshold <= keysAssigned) {
expandAndRehash();
}
// Reserve 4 bytes for the hash (don't just reserve, there may be junk there)
writeBuffers.write(FOUR_ZEROES);
// Write key to buffer to compute hashcode and compare; if it's a new key, it will
// become part of the record; otherwise, we will just write over it later.
long keyOffset = writeBuffers.getWritePoint();
kv.writeKey(writeBuffers);
int keyLength = (int) (writeBuffers.getWritePoint() - keyOffset);
int hashCode = (keyHashCode == -1) ? writeBuffers.hashCode(keyOffset, keyLength) : keyHashCode;
int slot = findKeySlotToWrite(keyOffset, keyLength, hashCode);
// LOG.info("Write hash code is " + Integer.toBinaryString(hashCode) + " - " + slot);
long ref = refs[slot];
if (ref == 0) {
// This is a new key, keep writing the first record.
long tailOffset = writeFirstValueRecord(kv, keyOffset, keyLength, hashCode);
byte stateByte = kv.updateStateByte(null);
refs[slot] = Ref.makeFirstRef(tailOffset, stateByte, hashCode, startingHashBitCount);
++keysAssigned;
} else {
// This is not a new key; we'll overwrite the key and hash bytes - not needed anymore.
writeBuffers.setWritePoint(keyOffset - 4);
long lrPtrOffset = createOrGetListRecord(ref);
long tailOffset = writeValueAndLength(kv);
addRecordToList(lrPtrOffset, tailOffset);
byte oldStateByte = Ref.getStateByte(ref);
byte stateByte = kv.updateStateByte(oldStateByte);
if (oldStateByte != stateByte) {
ref = Ref.setStateByte(ref, stateByte);
}
refs[slot] = Ref.setListFlag(ref);
}
++numValues;
}
