Function GetInputDarksendRounds

src/darksend.cpp:412–447

Recursively determine the rounds of a given input (How deep is the darksend chain for a given input)

// Recursively determine the rounds of a given input (How deep is the darksend chain for a given input)
int GetInputDarksendRounds(CTxIn in, int rounds) {
    if (rounds >= 17) return rounds;
    if (rounds > nDarksendRounds || nDarksendRounds <= 0 || !fEnableDarksend) return rounds; // once we hit the max rounds setting, there's no point going further back (this func is only used for selecting qualifying txs)

    std::string padding = "";
    padding.insert(0, ((rounds + 1) * 5) + 3, ' ');

    const CWalletTx* wtx = pwalletMain->GetWalletTx(in.prevout.hash);
    if (wtx != NULL) {
        // bounds check
        if (in.prevout.n >= wtx->vout.size()) return -4;

        if (wtx->vout[in.prevout.n].nValue == DARKSEND_FEE) return -3;

        //make sure the final output is non-denominate
        if (rounds == 0 && !pwalletMain->IsDenominatedAmount(wtx->vout[in.prevout.n].nValue)) return -2; //NOT DENOM

        bool found = false;
        for (CTxOut out : wtx->vout) {
            found = pwalletMain->IsDenominatedAmount(out.nValue);
            if (found) break; // no need to loop more
        }
        if (!found) return rounds - 1; //NOT FOUND, "-1" because of the pre-mixing creation of denominated amounts

        // find my vin and look that up
        for (CTxIn in2 : wtx->vin) {
            if (pwalletMain->IsMine(in2)) {
                //LogPrintf("rounds :: %s %s %d NEXT\n", padding.c_str(), in.ToString().c_str(), rounds);
                int n = GetInputDarksendRounds(in2, rounds + 1);
                if (n != -3) return n;
            }
        }
    }

    return rounds - 1;
}

void CDarkSendPool::Reset() {
    cachedLastSuccess = 0;