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Merge pull request #2221 from sipa/perfo

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Various performance tweaks to CCoinsView
This commit is contained in:
Gavin Andresen
2013-02-22 09:01:30 -08:00
parent b8f4e42e1b f369d02c51
commit cc67f1e2b4
4 changed files with 47 additions and 37 deletions
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35
src/main.h
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@@ -909,6 +909,15 @@ public:
void Cleanup() {
while (vout.size() > 0 && vout.back().IsNull())
vout.pop_back();
if (vout.empty())
std::vector<CTxOut>().swap(vout);
}
void swap(CCoins &to) {
std::swap(to.fCoinBase, fCoinBase);
to.vout.swap(vout);
std::swap(to.nHeight, nHeight);
std::swap(to.nVersion, nVersion);
}
// equality test
@@ -2109,14 +2118,14 @@ class CCoinsView
{
public:
// Retrieve the CCoins (unspent transaction outputs) for a given txid
virtual bool GetCoins(uint256 txid, CCoins &coins);
virtual bool GetCoins(const uint256 &txid, CCoins &coins);
// Modify the CCoins for a given txid
virtual bool SetCoins(uint256 txid, const CCoins &coins);
virtual bool SetCoins(const uint256 &txid, const CCoins &coins);
// Just check whether we have data for a given txid.
// This may (but cannot always) return true for fully spent transactions
virtual bool HaveCoins(uint256 txid);
virtual bool HaveCoins(const uint256 &txid);
// Retrieve the block index whose state this CCoinsView currently represents
virtual CBlockIndex *GetBestBlock();
@@ -2142,9 +2151,9 @@ protected:
public:
CCoinsViewBacked(CCoinsView &viewIn);
bool GetCoins(uint256 txid, CCoins &coins);
bool SetCoins(uint256 txid, const CCoins &coins);
bool HaveCoins(uint256 txid);
bool GetCoins(const uint256 &txid, CCoins &coins);
bool SetCoins(const uint256 &txid, const CCoins &coins);
bool HaveCoins(const uint256 &txid);
CBlockIndex *GetBestBlock();
bool SetBestBlock(CBlockIndex *pindex);
void SetBackend(CCoinsView &viewIn);
@@ -2163,9 +2172,9 @@ public:
CCoinsViewCache(CCoinsView &baseIn, bool fDummy = false);
// Standard CCoinsView methods
bool GetCoins(uint256 txid, CCoins &coins);
bool SetCoins(uint256 txid, const CCoins &coins);
bool HaveCoins(uint256 txid);
bool GetCoins(const uint256 &txid, CCoins &coins);
bool SetCoins(const uint256 &txid, const CCoins &coins);
bool HaveCoins(const uint256 &txid);
CBlockIndex *GetBestBlock();
bool SetBestBlock(CBlockIndex *pindex);
bool BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex);
@@ -2173,7 +2182,7 @@ public:
// Return a modifiable reference to a CCoins. Check HaveCoins first.
// Many methods explicitly require a CCoinsViewCache because of this method, to reduce
// copying.
CCoins &GetCoins(uint256 txid);
CCoins &GetCoins(const uint256 &txid);
// Push the modifications applied to this cache to its base.
// Failure to call this method before destruction will cause the changes to be forgotten.
@@ -2183,7 +2192,7 @@ public:
unsigned int GetCacheSize();
private:
std::map<uint256,CCoins>::iterator FetchCoins(uint256 txid);
std::map<uint256,CCoins>::iterator FetchCoins(const uint256 &txid);
};
/** CCoinsView that brings transactions from a memorypool into view.
@@ -2195,8 +2204,8 @@ protected:
public:
CCoinsViewMemPool(CCoinsView &baseIn, CTxMemPool &mempoolIn);
bool GetCoins(uint256 txid, CCoins &coins);
bool HaveCoins(uint256 txid);
bool GetCoins(const uint256 &txid, CCoins &coins);
bool HaveCoins(const uint256 &txid);
};
/** Global variable that points to the active CCoinsView (protected by cs_main) */