twisterarmy
/
twister-core
mirror of https://github.com/twisterarmy/twister-core.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity
Browse Source

efficiently sort transaction dependencies in one pass 

git-svn-id: https://bitcoin.svn.sourceforge.net/svnroot/bitcoin/trunk@184 1a98c847-1fd6-4fd8-948a-caf3550aa51b
miguelfreitas
s_nakamoto 14 years ago
parent
c4679ad0f1
commit
683bcb9154
3 changed files with 97 additions and 48 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 89
      main.cpp
  2. 22
      net.cpp
  3. 2
      serialize.h

89
main.cpp
Unescape View File

@ -598,6 +598,8 @@ bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMi @@ -598,6 +598,8 @@ bool CTransaction::AcceptToMemoryPool(CTxDB& txdb, bool fCheckInputs, bool* pfMi
if (i != 0)
return false;
ptxOld = mapNextTx[outpoint].ptx;
if (ptxOld->IsFinal())
return false;
if (!IsNewerThan(*ptxOld))
return false;
for (int i = 0; i < vin.size(); i++)
@ -3031,6 +3033,28 @@ extern unsigned int ScanHash_4WaySSE2(char* pmidstate, char* pblock, char* phash @@ -3031,6 +3033,28 @@ extern unsigned int ScanHash_4WaySSE2(char* pmidstate, char* pblock, char* phash
class COrphan
{
public:
CTransaction* ptx;
set<uint256> setDependsOn;
double dPriority;
COrphan(CTransaction* ptxIn)
{
ptx = ptxIn;
dPriority = 0;
}
void print() const
{
printf("COrphan(hash=%s, dPriority=%.1f)\n", ptx->GetHash().ToString().substr(0,10).c_str(), dPriority);
foreach(uint256 hash, setDependsOn)
printf(" setDependsOn %s\n", hash.ToString().substr(0,10).c_str());
}
};
void BitcoinMiner()
{
@ -3098,6 +3122,8 @@ void BitcoinMiner() @@ -3098,6 +3122,8 @@ void BitcoinMiner()
CTxDB txdb("r");
// Priority order to process transactions
list<COrphan> vOrphan; // list memory doesn't move
map<uint256, vector<COrphan*> > mapDependers;
multimap<double, CTransaction*> mapPriority;
for (map<uint256, CTransaction>::iterator mi = mapTransactions.begin(); mi != mapTransactions.end(); ++mi)
{
@ -3105,6 +3131,7 @@ void BitcoinMiner() @@ -3105,6 +3131,7 @@ void BitcoinMiner()
if (tx.IsCoinBase() || !tx.IsFinal())
continue;
COrphan* porphan = NULL;
double dPriority = 0;
foreach(const CTxIn& txin, tx.vin)
{
@ -3112,7 +3139,18 @@ void BitcoinMiner() @@ -3112,7 +3139,18 @@ void BitcoinMiner()
CTransaction txPrev;
CTxIndex txindex;
if (!txPrev.ReadFromDisk(txdb, txin.prevout, txindex))
{
// Has to wait for dependencies
if (!porphan)
{
// Use list for automatic deletion
vOrphan.push_back(COrphan(&tx));
porphan = &vOrphan.back();
}
mapDependers[txin.prevout.hash].push_back(porphan);
porphan->setDependsOn.insert(txin.prevout.hash);
continue;
}
int64 nValueIn = txPrev.vout[txin.prevout.n].nValue;
// Read block header
@ -3138,55 +3176,66 @@ void BitcoinMiner() @@ -3138,55 +3176,66 @@ void BitcoinMiner()
// Priority is sum(valuein * age) / txsize
dPriority /= ::GetSerializeSize(tx, SER_NETWORK);
if (porphan)
porphan->dPriority = dPriority;
else
mapPriority.insert(make_pair(-dPriority, &(*mi).second));
if (fDebug && mapArgs.count("-printpriority"))
printf("priority %-20.1f %s\n%s\n", dPriority, tx.GetHash().ToString().substr(0,10).c_str(), tx.ToString().c_str());
{
printf("priority %-20.1f %s\n%s", dPriority, tx.GetHash().ToString().substr(0,10).c_str(), tx.ToString().c_str());
if (porphan)
porphan->print();
printf("\n");
}
}
// Collect transactions into block
map<uint256, CTxIndex> mapTestPool;
uint64 nBlockSize = 1000;
int nBlockSigOps = 100;
bool fFoundSomething = true;
while (fFoundSomething)
while (!mapPriority.empty())
{
fFoundSomething = false;
for (multimap<double, CTransaction*>::iterator mi = mapPriority.begin(); mi != mapPriority.end();)
{
CTransaction& tx = *(*mi).second;
// Take highest priority transaction off priority queue
CTransaction& tx = *(*mapPriority.begin()).second;
mapPriority.erase(mapPriority.begin());
// Size limits
unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK);
if (nBlockSize + nTxSize >= MAX_BLOCK_SIZE_GEN)
{
mapPriority.erase(mi++);
continue;
}
int nTxSigOps = tx.GetSigOpCount();
if (nBlockSigOps + nTxSigOps >= MAX_BLOCK_SIGOPS)
{
mapPriority.erase(mi++);
continue;
}
// Transaction fee based on block size
int64 nMinFee = tx.GetMinFee(nBlockSize);
// Connecting can fail due to dependency on other memory pool transactions
// that aren't in the block yet, so keep trying in later passes
// Connecting shouldn't fail due to dependency on other memory pool transactions
// because we're already processing them in order of dependency
map<uint256, CTxIndex> mapTestPoolTmp(mapTestPool);
if (!tx.ConnectInputs(txdb, mapTestPoolTmp, CDiskTxPos(1,1,1), pindexPrev, nFees, false, true, nMinFee))
{
mi++;
continue;
}
swap(mapTestPool, mapTestPoolTmp);
// Added
pblock->vtx.push_back(tx);
nBlockSize += nTxSize;
nBlockSigOps += nTxSigOps;
fFoundSomething = true;
mapPriority.erase(mi++);
// Add transactions that depend on this one to the priority queue
uint256 hash = tx.GetHash();
if (mapDependers.count(hash))
{
foreach(COrphan* porphan, mapDependers[hash])
{
if (!porphan->setDependsOn.empty())
{
porphan->setDependsOn.erase(hash);
if (porphan->setDependsOn.empty())
mapPriority.insert(make_pair(-porphan->dPriority, porphan->ptx));
}
}
}
}
}

22
net.cpp
Unescape View File

@ -178,41 +178,41 @@ bool GetMyExternalIP(unsigned int& ipRet) @@ -178,41 +178,41 @@ bool GetMyExternalIP(unsigned int& ipRet)
{
if (nHost == 1)
{
addrConnect = CAddress("72.233.89.199:80"); // www.whatismyip.com
addrConnect = CAddress("91.198.22.70:80"); // checkip.dyndns.org
if (nLookup == 1)
{
struct hostent* phostent = gethostbyname("www.whatismyip.com");
struct hostent* phostent = gethostbyname("checkip.dyndns.org");
if (phostent && phostent->h_addr_list && phostent->h_addr_list[0])
addrConnect = CAddress(*(u_long*)phostent->h_addr_list[0], htons(80));
}
pszGet = "GET /automation/n09230945.asp HTTP/1.1\r\n"
"Host: www.whatismyip.com\r\n"
"User-Agent: Bitcoin/1.0 (see www.bitcoin.org)\r\n"
pszGet = "GET / HTTP/1.1\r\n"
"Host: checkip.dyndns.org\r\n"
"User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
"Connection: close\r\n"
"\r\n";
pszKeyword = NULL; // Returns just IP address
pszKeyword = "Address:";
}
else if (nHost == 2)
{
addrConnect = CAddress("91.198.22.70:80"); // checkip.dyndns.org
addrConnect = CAddress("74.208.43.192:80"); // www.showmyip.com
if (nLookup == 1)
{
struct hostent* phostent = gethostbyname("checkip.dyndns.org");
struct hostent* phostent = gethostbyname("www.showmyip.com");
if (phostent && phostent->h_addr_list && phostent->h_addr_list[0])
addrConnect = CAddress(*(u_long*)phostent->h_addr_list[0], htons(80));
}
pszGet = "GET / HTTP/1.1\r\n"
"Host: checkip.dyndns.org\r\n"
pszGet = "GET /simple/ HTTP/1.1\r\n"
"Host: www.showmyip.com\r\n"
"User-Agent: Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1)\r\n"
"Connection: close\r\n"
"\r\n";
pszKeyword = "Address:";
pszKeyword = NULL; // Returns just IP address
}
if (GetMyExternalIP2(addrConnect, pszGet, pszKeyword, ipRet))

2
serialize.h
Unescape View File

@ -22,7 +22,7 @@ class CDataStream; @@ -22,7 +22,7 @@ class CDataStream;
class CAutoFile;
static const unsigned int MAX_SIZE = 0x02000000;
static const int VERSION = 31501;
static const int VERSION = 31502;
static const char* pszSubVer = "";

Write Preview
Loading…
Cancel
Save