Files
rippled/LedgerHistory.cpp
2011-12-16 22:14:09 -08:00

83 lines
2.5 KiB
C++

#include <string>
#include "boost/bind.hpp"
#include "LedgerHistory.h"
#include "Config.h"
#include "Application.h"
void LedgerHistory::addLedger(Ledger::pointer ledger)
{
uint256 h(ledger->getHash());
boost::recursive_mutex::scoped_lock sl(mLock);
mLedgersByHash.insert(std::make_pair(h, ledger));
}
void LedgerHistory::addAcceptedLedger(Ledger::pointer ledger)
{
assert(ledger && ledger->isAccepted());
uint256 h(ledger->getHash());
boost::recursive_mutex::scoped_lock sl(mLock);
mLedgersByIndex.insert(std::make_pair(ledger->getLedgerSeq(), ledger));
mLedgersByHash.insert(std::make_pair(h, ledger));
theApp->getIOService().post(boost::bind(&Ledger::saveAcceptedLedger, ledger));
}
Ledger::pointer LedgerHistory::getLedgerBySeq(uint32 index)
{
boost::recursive_mutex::scoped_lock sl(mLock);
std::map<uint32, Ledger::pointer>::iterator it(mLedgersByIndex.find(index));
if(it!=mLedgersByIndex.end()) return it->second;
sl.unlock();
Ledger::pointer ret(Ledger::loadByIndex(index));
if(!ret) return ret;
assert(ret->getLedgerSeq()==index);
uint256 h=ret->getHash();
sl.lock();
mLedgersByIndex.insert(std::make_pair(index, ret));
mLedgersByHash.insert(std::make_pair(h, ret));
return ret;
}
Ledger::pointer LedgerHistory::getLedgerByHash(const uint256& hash)
{
boost::recursive_mutex::scoped_lock sl(mLock);
std::map<uint256, Ledger::pointer>::iterator it(mLedgersByHash.find(hash));
if(it!=mLedgersByHash.end()) return it->second;
sl.unlock();
Ledger::pointer ret=Ledger::loadByHash(hash);
if(!ret) return ret;
assert(ret->getHash()==hash);
sl.lock();
mLedgersByHash.insert(std::make_pair(hash, ret));
if(ret->isAccepted()) mLedgersByIndex.insert(std::make_pair(ret->getLedgerSeq(), ret));
return ret;
}
Ledger::pointer LedgerHistory::canonicalizeLedger(Ledger::pointer ledger, bool save)
{
uint256 h(ledger->getHash());
boost::recursive_mutex::scoped_lock sl(mLock);
if(!save)
{ // return input ledger if not in map, otherwise, return corresponding map ledger
std::map<uint256, Ledger::pointer>::iterator it(mLedgersByHash.find(h));
if(it!=mLedgersByHash.end()) return it->second;
}
else
{ // save input ledger in map if not in map, otherwise return corresponding map ledger
std::pair<std::map<uint256,
Ledger::pointer>::iterator, bool> sp(mLedgersByHash.insert(std::make_pair(h, ledger)));
if(!sp.second) // ledger was not inserted
return sp.first->second;
if(ledger->isAccepted())
mLedgersByIndex.insert(std::make_pair(ledger->getLedgerSeq(), ledger));
}
return ledger;
}