aboutsummaryrefslogtreecommitdiff
path: root/src/coins.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'src/coins.cpp')
-rw-r--r--src/coins.cpp92
1 files changed, 51 insertions, 41 deletions
diff --git a/src/coins.cpp b/src/coins.cpp
index fe40911db..34485db2b 100644
--- a/src/coins.cpp
+++ b/src/coins.cpp
@@ -52,30 +52,30 @@ bool CCoins::Spend(int nPos) {
}
-bool CCoinsView::GetCoins(const uint256 &txid, CCoins &coins) { return false; }
+bool CCoinsView::GetCoins(const uint256 &txid, CCoins &coins) const { return false; }
bool CCoinsView::SetCoins(const uint256 &txid, const CCoins &coins) { return false; }
-bool CCoinsView::HaveCoins(const uint256 &txid) { return false; }
-uint256 CCoinsView::GetBestBlock() { return uint256(0); }
+bool CCoinsView::HaveCoins(const uint256 &txid) const { return false; }
+uint256 CCoinsView::GetBestBlock() const { return uint256(0); }
bool CCoinsView::SetBestBlock(const uint256 &hashBlock) { return false; }
-bool CCoinsView::BatchWrite(const CCoinsMap &mapCoins, const uint256 &hashBlock) { return false; }
-bool CCoinsView::GetStats(CCoinsStats &stats) { return false; }
+bool CCoinsView::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) { return false; }
+bool CCoinsView::GetStats(CCoinsStats &stats) const { return false; }
CCoinsViewBacked::CCoinsViewBacked(CCoinsView &viewIn) : base(&viewIn) { }
-bool CCoinsViewBacked::GetCoins(const uint256 &txid, CCoins &coins) { return base->GetCoins(txid, coins); }
+bool CCoinsViewBacked::GetCoins(const uint256 &txid, CCoins &coins) const { return base->GetCoins(txid, coins); }
bool CCoinsViewBacked::SetCoins(const uint256 &txid, const CCoins &coins) { return base->SetCoins(txid, coins); }
-bool CCoinsViewBacked::HaveCoins(const uint256 &txid) { return base->HaveCoins(txid); }
-uint256 CCoinsViewBacked::GetBestBlock() { return base->GetBestBlock(); }
+bool CCoinsViewBacked::HaveCoins(const uint256 &txid) const { return base->HaveCoins(txid); }
+uint256 CCoinsViewBacked::GetBestBlock() const { return base->GetBestBlock(); }
bool CCoinsViewBacked::SetBestBlock(const uint256 &hashBlock) { return base->SetBestBlock(hashBlock); }
void CCoinsViewBacked::SetBackend(CCoinsView &viewIn) { base = &viewIn; }
-bool CCoinsViewBacked::BatchWrite(const CCoinsMap &mapCoins, const uint256 &hashBlock) { return base->BatchWrite(mapCoins, hashBlock); }
-bool CCoinsViewBacked::GetStats(CCoinsStats &stats) { return base->GetStats(stats); }
+bool CCoinsViewBacked::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) { return base->BatchWrite(mapCoins, hashBlock); }
+bool CCoinsViewBacked::GetStats(CCoinsStats &stats) const { return base->GetStats(stats); }
CCoinsKeyHasher::CCoinsKeyHasher() : salt(GetRandHash()) {}
CCoinsViewCache::CCoinsViewCache(CCoinsView &baseIn, bool fDummy) : CCoinsViewBacked(baseIn), hashBlock(0) { }
-bool CCoinsViewCache::GetCoins(const uint256 &txid, CCoins &coins) {
+bool CCoinsViewCache::GetCoins(const uint256 &txid, CCoins &coins) const {
if (cacheCoins.count(txid)) {
coins = cacheCoins[txid];
return true;
@@ -99,19 +99,33 @@ CCoinsMap::iterator CCoinsViewCache::FetchCoins(const uint256 &txid) {
return ret;
}
+CCoinsMap::const_iterator CCoinsViewCache::FetchCoins(const uint256 &txid) const {
+ /* Avoid redundant implementation with the const-cast. */
+ return const_cast<CCoinsViewCache*>(this)->FetchCoins(txid);
+}
+
CCoins &CCoinsViewCache::GetCoins(const uint256 &txid) {
CCoinsMap::iterator it = FetchCoins(txid);
assert(it != cacheCoins.end());
return it->second;
}
+const CCoins* CCoinsViewCache::AccessCoins(const uint256 &txid) const {
+ CCoinsMap::const_iterator it = FetchCoins(txid);
+ if (it == cacheCoins.end()) {
+ return NULL;
+ } else {
+ return &it->second;
+ }
+}
+
bool CCoinsViewCache::SetCoins(const uint256 &txid, const CCoins &coins) {
cacheCoins[txid] = coins;
return true;
}
-bool CCoinsViewCache::HaveCoins(const uint256 &txid) {
- CCoinsMap::iterator it = FetchCoins(txid);
+bool CCoinsViewCache::HaveCoins(const uint256 &txid) const {
+ CCoinsMap::const_iterator it = FetchCoins(txid);
// We're using vtx.empty() instead of IsPruned here for performance reasons,
// as we only care about the case where an transaction was replaced entirely
// in a reorganization (which wipes vout entirely, as opposed to spending
@@ -119,7 +133,7 @@ bool CCoinsViewCache::HaveCoins(const uint256 &txid) {
return (it != cacheCoins.end() && !it->second.vout.empty());
}
-uint256 CCoinsViewCache::GetBestBlock() {
+uint256 CCoinsViewCache::GetBestBlock() const {
if (hashBlock == uint256(0))
hashBlock = base->GetBestBlock();
return hashBlock;
@@ -130,32 +144,34 @@ bool CCoinsViewCache::SetBestBlock(const uint256 &hashBlockIn) {
return true;
}
-bool CCoinsViewCache::BatchWrite(const CCoinsMap &mapCoins, const uint256 &hashBlockIn) {
- for (CCoinsMap::const_iterator it = mapCoins.begin(); it != mapCoins.end(); it++)
- cacheCoins[it->first] = it->second;
+bool CCoinsViewCache::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlockIn) {
+ for (CCoinsMap::iterator it = mapCoins.begin(); it != mapCoins.end();) {
+ cacheCoins[it->first].swap(it->second);
+ CCoinsMap::iterator itOld = it++;
+ mapCoins.erase(itOld);
+ }
hashBlock = hashBlockIn;
return true;
}
bool CCoinsViewCache::Flush() {
bool fOk = base->BatchWrite(cacheCoins, hashBlock);
- if (fOk)
- cacheCoins.clear();
+ cacheCoins.clear();
return fOk;
}
-unsigned int CCoinsViewCache::GetCacheSize() {
+unsigned int CCoinsViewCache::GetCacheSize() const {
return cacheCoins.size();
}
-const CTxOut &CCoinsViewCache::GetOutputFor(const CTxIn& input)
+const CTxOut &CCoinsViewCache::GetOutputFor(const CTxIn& input) const
{
- const CCoins &coins = GetCoins(input.prevout.hash);
- assert(coins.IsAvailable(input.prevout.n));
- return coins.vout[input.prevout.n];
+ const CCoins* coins = AccessCoins(input.prevout.hash);
+ assert(coins && coins->IsAvailable(input.prevout.n));
+ return coins->vout[input.prevout.n];
}
-int64_t CCoinsViewCache::GetValueIn(const CTransaction& tx)
+int64_t CCoinsViewCache::GetValueIn(const CTransaction& tx) const
{
if (tx.IsCoinBase())
return 0;
@@ -167,38 +183,32 @@ int64_t CCoinsViewCache::GetValueIn(const CTransaction& tx)
return nResult;
}
-bool CCoinsViewCache::HaveInputs(const CTransaction& tx)
+bool CCoinsViewCache::HaveInputs(const CTransaction& tx) const
{
if (!tx.IsCoinBase()) {
- // first check whether information about the prevout hash is available
for (unsigned int i = 0; i < tx.vin.size(); i++) {
const COutPoint &prevout = tx.vin[i].prevout;
- if (!HaveCoins(prevout.hash))
- return false;
- }
-
- // then check whether the actual outputs are available
- for (unsigned int i = 0; i < tx.vin.size(); i++) {
- const COutPoint &prevout = tx.vin[i].prevout;
- const CCoins &coins = GetCoins(prevout.hash);
- if (!coins.IsAvailable(prevout.n))
+ const CCoins* coins = AccessCoins(prevout.hash);
+ if (!coins || !coins->IsAvailable(prevout.n)) {
return false;
+ }
}
}
return true;
}
-double CCoinsViewCache::GetPriority(const CTransaction &tx, int nHeight)
+double CCoinsViewCache::GetPriority(const CTransaction &tx, int nHeight) const
{
if (tx.IsCoinBase())
return 0.0;
double dResult = 0.0;
BOOST_FOREACH(const CTxIn& txin, tx.vin)
{
- const CCoins &coins = GetCoins(txin.prevout.hash);
- if (!coins.IsAvailable(txin.prevout.n)) continue;
- if (coins.nHeight < nHeight) {
- dResult += coins.vout[txin.prevout.n].nValue * (nHeight-coins.nHeight);
+ const CCoins* coins = AccessCoins(txin.prevout.hash);
+ assert(coins);
+ if (!coins->IsAvailable(txin.prevout.n)) continue;
+ if (coins->nHeight < nHeight) {
+ dResult += coins->vout[txin.prevout.n].nValue * (nHeight-coins->nHeight);
}
}
return tx.ComputePriority(dResult);
generated by cgit v1.2.3 (git 2.25.1) at 2026-04-28 04:24:14 +0000