Bitcoin Core  24.99.0
P2P Digital Currency
coin.cpp
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1 // Copyright (c) 2019-2021 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #include <node/coin.h>
6 
7 #include <node/context.h>
8 #include <txmempool.h>
9 #include <validation.h>
10 
11 namespace node {
12 void FindCoins(const NodeContext& node, std::map<COutPoint, Coin>& coins)
13 {
14  assert(node.mempool);
15  assert(node.chainman);
16  LOCK2(cs_main, node.mempool->cs);
17  CCoinsViewCache& chain_view = node.chainman->ActiveChainstate().CoinsTip();
18  CCoinsViewMemPool mempool_view(&chain_view, *node.mempool);
19  for (auto& coin : coins) {
20  if (!mempool_view.GetCoin(coin.first, coin.second)) {
21  // Either the coin is not in the CCoinsViewCache or is spent. Clear it.
22  coin.second.Clear();
23  }
24  }
25 }
26 } // namespace node
RecursiveMutex cs_main
Mutex to guard access to validation specific variables, such as reading or changing the chainstate.
Definition: validation.cpp:121
CCoinsView that adds a memory cache for transactions to another CCoinsView.
Definition: coins.h:213
CCoinsView that brings transactions from a mempool into view.
Definition: txmempool.h:908
bool GetCoin(const COutPoint &outpoint, Coin &coin) const override
Retrieve the Coin (unspent transaction output) for a given outpoint.
Definition: txmempool.cpp:979
Definition: init.h:25
void FindCoins(const NodeContext &node, std::map< COutPoint, Coin > &coins)
Look up unspent output information.
Definition: coin.cpp:12
NodeContext struct containing references to chain state and connection state.
Definition: context.h:43
#define LOCK2(cs1, cs2)
Definition: sync.h:262
assert(!tx.IsCoinBase())