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authorAndrew Chow <achow101-github@achow101.com>2019-11-06 14:35:11 -0500
committerAndrew Chow <achow101-github@achow101.com>2021-09-23 13:33:25 -0400
commit8bf789b4b4b26082aea1d91c4d7aa8b01aedfdcf (patch)
tree5b7e6d05db8d18d78a1dd02c420ac23b3454d5e9 /src/wallet/coinselection.h
parent2ad3b5d2ad03f781f564ee697ef11e18b2edcea3 (diff)
Add SelectCoinsSRD function
Diffstat (limited to 'src/wallet/coinselection.h')
-rw-r--r--src/wallet/coinselection.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/wallet/coinselection.h b/src/wallet/coinselection.h
index 35617d455b..0f07017ef2 100644
--- a/src/wallet/coinselection.h
+++ b/src/wallet/coinselection.h
@@ -10,6 +10,8 @@
#include <primitives/transaction.h>
#include <random.h>
+#include <optional>
+
//! target minimum change amount
static constexpr CAmount MIN_CHANGE{COIN / 100};
//! final minimum change amount after paying for fees
@@ -183,6 +185,15 @@ struct OutputGroup
bool SelectCoinsBnB(std::vector<OutputGroup>& utxo_pool, const CAmount& selection_target, const CAmount& cost_of_change, std::set<CInputCoin>& out_set, CAmount& value_ret);
+/** Select coins by Single Random Draw. OutputGroups are selected randomly from the eligible
+ * outputs until the target is satisfied
+ *
+ * @param[in] utxo_pool The positive effective value OutputGroups eligible for selection
+ * @param[in] target_value The target value to select for
+ * @returns If successful, a pair of set of outputs and total selected value, otherwise, std::nullopt
+ */
+std::optional<std::pair<std::set<CInputCoin>, CAmount>> SelectCoinsSRD(const std::vector<OutputGroup>& utxo_pool, CAmount target_value);
+
// Original coin selection algorithm as a fallback
bool KnapsackSolver(const CAmount& nTargetValue, std::vector<OutputGroup>& groups, std::set<CInputCoin>& setCoinsRet, CAmount& nValueRet);