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Various performance tweaks to CCoinsView

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* Pass txid's to CCoinsView functions by reference instead of by value
* Add a method to swap CCoins, and use it in some places to avoid a
  allocating copy + destruct.
* Optimize CCoinsViewCache::FetchCoins to do only a single search
  through the backing map.
This commit is contained in:
Pieter Wuille
2013-01-20 18:05:34 +01:00
parent 71eccdeaff
commit f369d02c51
4 changed files with 47 additions and 37 deletions
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6
src/txdb.h
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@@ -16,9 +16,9 @@ protected:
public:
CCoinsViewDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
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);