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Use unordered_map for CCoinsViewCache with salted hash

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This commit is contained in:
Pieter Wuille
2014-07-09 17:25:09 +02:00
parent bdd5b587fc
commit bc42503f6a
4 changed files with 66 additions and 4 deletions
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8
src/coins.cpp
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@@ -4,6 +4,8 @@
#include "coins.h"
#include "random.h"
#include <assert.h>
// calculate number of bytes for the bitmask, and its number of non-zero bytes
@@ -69,6 +71,8 @@ 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); }
CCoinsKeyHasher::CCoinsKeyHasher() : salt(GetRandHash()) {}
CCoinsViewCache::CCoinsViewCache(CCoinsView &baseIn, bool fDummy) : CCoinsViewBacked(baseIn), hashBlock(0) { }
bool CCoinsViewCache::GetCoins(const uint256 &txid, CCoins &coins) {
@@ -84,8 +88,8 @@ bool CCoinsViewCache::GetCoins(const uint256 &txid, CCoins &coins) {
}
CCoinsMap::iterator CCoinsViewCache::FetchCoins(const uint256 &txid) {
CCoinsMap::iterator it = cacheCoins.lower_bound(txid);
if (it != cacheCoins.end() && it->first == txid)
CCoinsMap::iterator it = cacheCoins.find(txid);
if (it != cacheCoins.end())
return it;
CCoins tmp;
if (!base->GetCoins(txid,tmp))