andrewkkchan

type chain struct {
	support  consensus.ConsenterSupport
	sendChan chan *message
	exitChan chan struct{}
}

andrewkkchan

// Order accepts normal messages for ordering
func (ch *chain) Order(env *cb.Envelope, configSeq uint64) error {
	select {
	case ch.sendChan <- &message{
		configSeq: configSeq,
		normalMsg: env,
	}:
		return nil
	case <-ch.exitChan:
		return fmt.Errorf("Exiting")

andrewkkchan

// Chain defines a way to inject messages for ordering.
// Note, that in order to allow flexibility in the implementation, it is the responsibility of the implementer
// to take the ordered messages, send them through the blockcutter.Receiver supplied via HandleChain to cut blocks,
// and ultimately write the ledger also supplied via HandleChain.  This design allows for two primary flows
// 1. Messages are ordered into a stream, the stream is cut into blocks, the blocks are committed (solo, kafka)
// 2. Messages are cut into blocks, the blocks are ordered, then the blocks are committed (sbft)
type Chain interface {
	// Order accepts a message which has been processed at a given configSeq.
	// If the configSeq advances, it is the responsibility of the consenter
	// to revalidate and potentially discard the message

andrewkkchan

void IncrementExtraNonce(CBlock* pblock, const CBlockIndex* pindexPrev, unsigned int& nExtraNonce)
{
    // Update nExtraNonce
    static uint256 hashPrevBlock;
    if (hashPrevBlock != pblock->hashPrevBlock)
    {
        nExtraNonce = 0;
        hashPrevBlock = pblock->hashPrevBlock;
    }
    ++nExtraNonce;

andrewkkchan

class CBlockHeader
{
public:
   // header
   int32_t nVersion;
   uint256 hashPrevBlock;
   uint256 hashMerkleRoot;
   uint32_t nTime;
   uint32_t nBits;
   uint32_t nNonce;