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index: Add Coinstats index

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The index holds the values previously calculated in coinstats.cpp
for each block, representing the state of the UTXO set at each
height.
This commit is contained in:
Fabian Jahr
2020-01-24 18:56:47 +01:00
parent a8a46c4b3c
commit dd58a4de21
6 changed files with 437 additions and 8 deletions
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19
src/node/coinstats.cpp
View File

@@ -16,14 +16,22 @@
#include <map>
// Database-independent metric indicating the UTXO set size
static uint64_t GetBogoSize(const CScript& scriptPubKey)
uint64_t GetBogoSize(const CScript& script_pub_key)
{
return 32 /* txid */ +
4 /* vout index */ +
4 /* height + coinbase */ +
8 /* amount */ +
2 /* scriptPubKey len */ +
scriptPubKey.size() /* scriptPubKey */;
script_pub_key.size() /* scriptPubKey */;
}
CDataStream TxOutSer(const COutPoint& outpoint, const Coin& coin) {
CDataStream ss(SER_DISK, PROTOCOL_VERSION);
ss << outpoint;
ss << static_cast<uint32_t>(coin.nHeight * 2 + coin.fCoinBase);
ss << coin.out;
return ss;
}
//! Warning: be very careful when changing this! assumeutxo and UTXO snapshot
@@ -63,12 +71,7 @@ static void ApplyHash(MuHash3072& muhash, const uint256& hash, const std::map<ui
for (auto it = outputs.begin(); it != outputs.end(); ++it) {
COutPoint outpoint = COutPoint(hash, it->first);
Coin coin = it->second;
CDataStream ss(SER_DISK, PROTOCOL_VERSION);
ss << outpoint;
ss << static_cast<uint32_t>(coin.nHeight * 2 + coin.fCoinBase);
ss << coin.out;
muhash.Insert(MakeUCharSpan(ss));
muhash.Insert(MakeUCharSpan(TxOutSer(outpoint, coin)));
}
}

7
src/node/coinstats.h
View File

@@ -7,6 +7,9 @@
#define BITCOIN_NODE_COINSTATS_H
#include <amount.h>
#include <chain.h>
#include <coins.h>
#include <streams.h>
#include <uint256.h>
#include <cstdint>
@@ -42,4 +45,8 @@ struct CCoinsStats
//! Calculate statistics about the unspent transaction output set
bool GetUTXOStats(CCoinsView* view, BlockManager& blockman, CCoinsStats& stats, const std::function<void()>& interruption_point = {});
uint64_t GetBogoSize(const CScript& script_pub_key);
CDataStream TxOutSer(const COutPoint& outpoint, const Coin& coin);
#endif // BITCOIN_NODE_COINSTATS_H