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Optimizations.

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This commit is contained in:
JoelKatz
2012-02-01 21:04:28 -08:00
parent 08d6b55fed
commit 9b804c0c61
1 changed files with 14 additions and 12 deletions
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26
SHAMapNodes.cpp
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@@ -5,6 +5,8 @@
#include <boost/foreach.hpp>
#include <boost/lexical_cast.hpp>
#include <openssl/sha.h>
std::string SHAMapNode::getString() const
{
std::string ret="NodeID(";
@@ -363,20 +365,20 @@ const uint256& SHAMapInnerNode::getChildHash(int m) const
return mHashes[m];
}
bool SHAMapInnerNode::isEmpty() const
{
for(int i=0; i<32; i++)
if(mHashes[i]!=0) return false;
return true;
}
bool SHAMapInnerNode::updateHash()
{
int nc=0;
Serializer s(1024);
for(int i=0; i<32; i++)
{
if(mHashes[i]!=0) nc++;
s.add256(mHashes[i]);
}
uint256 nh=0;
if(nc!=0)
nh=s.getSHA512Half();
if(mHash==nh) return false;
mHash=nh;
uint256 j[2];
if(!isEmpty())
SHA512(reinterpret_cast<unsigned char *>(mHashes), sizeof(mHashes), (unsigned char *) j);
if(mHash==j[0]) return false;
mHash=j[0];
return true;
}