Function MakeTransactionBulkedTo

src/bench/txorphanage.cpp:30–47

Creates a transaction with num_inputs inputs and 1 output, padded to target_weight. Use this function to maximize m_outpoint_to_orphan_it operations. If num_inputs is 0, we maximize the number of inputs.

// Creates a transaction with num_inputs inputs and 1 output, padded to target_weight. Use this function to maximize m_outpoint_to_orphan_it operations.
// If num_inputs is 0, we maximize the number of inputs.
static CTransactionRef MakeTransactionBulkedTo(unsigned int num_inputs, int64_t target_weight, FastRandomContext& det_rand)
{
    CMutableTransaction tx;
    assert(target_weight >= 40 + APPROX_WEIGHT_PER_INPUT);
    if (!num_inputs) num_inputs = (target_weight - 40) / APPROX_WEIGHT_PER_INPUT;
    for (unsigned int i = 0; i < num_inputs; ++i) {
        tx.vin.emplace_back(Txid::FromUint256(det_rand.rand256()), 0);
    }
    assert(GetTransactionWeight(*MakeTransactionRef(tx)) <= target_weight);

    tx.vout.resize(1);

    // If necessary, pad the transaction to the target weight.
    if (GetTransactionWeight(*MakeTransactionRef(tx)) < target_weight - 4) {
        BulkTransaction(tx, target_weight);
    }
    return MakeTransactionRef(tx);
}

// Constructs a transaction using a subset of inputs[start_input : start_input + num_inputs] up to the weight_limit.
static CTransactionRef MakeTransactionSpendingUpTo(const std::vector<CTxIn>& inputs, unsigned int start_input, unsigned int num_inputs, int64_t weight_limit)