private void reset(int op) {
done();
_buffer.reset();
set(_buffer);
_id = ID.getAndIncrement();
writeInt(0); // length: will set this later
writeInt(_id);
writeInt(0); // response to
writeInt(op);
}
OutMessage(Mongo m) {
_mongo = m;
_buffer = _mongo == null ? new PoolOutputBuffer() : _mongo._bufferPool.get();
set(_buffer);
}