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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_VALIDATIONINTERFACE_H
#define BITCOIN_VALIDATIONINTERFACE_H
#include <boost/signals2/signal.hpp>
#include <memory>
#include "primitives/transaction.h" // CTransaction(Ref)
class CBlock;
class CBlockIndex;
struct CBlockLocator;
class CBlockIndex;
class CConnman;
class CReserveScript;
class CValidationInterface;
class CValidationState;
class uint256;
// These functions dispatch to one or all registered wallets
/** Register a wallet to receive updates from core */
void RegisterValidationInterface(CValidationInterface* pwalletIn);
/** Unregister a wallet from core */
void UnregisterValidationInterface(CValidationInterface* pwalletIn);
/** Unregister all wallets from core */
void UnregisterAllValidationInterfaces();
class CValidationInterface {
protected:
virtual void UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) {}
virtual void TransactionAddedToMempool(const CTransactionRef &ptxn) {}
virtual void BlockConnected(const std::shared_ptr<const CBlock> &block, const CBlockIndex *pindex, const std::vector<CTransactionRef> &txnConflicted) {}
virtual void BlockDisconnected(const std::shared_ptr<const CBlock> &block) {}
virtual void SetBestChain(const CBlockLocator &locator) {}
virtual void Inventory(const uint256 &hash) {}
virtual void ResendWalletTransactions(int64_t nBestBlockTime, CConnman* connman) {}
virtual void BlockChecked(const CBlock&, const CValidationState&) {}
virtual void GetScriptForMining(std::shared_ptr<CReserveScript>&) {};
virtual void NewPoWValidBlock(const CBlockIndex *pindex, const std::shared_ptr<const CBlock>& block) {};
friend void ::RegisterValidationInterface(CValidationInterface*);
friend void ::UnregisterValidationInterface(CValidationInterface*);
friend void ::UnregisterAllValidationInterfaces();
};
struct CMainSignals {
/** Notifies listeners of updated block chain tip */
boost::signals2::signal<void (const CBlockIndex *, const CBlockIndex *, bool fInitialDownload)> UpdatedBlockTip;
/** Notifies listeners of a transaction having been added to mempool. */
boost::signals2::signal<void (const CTransactionRef &)> TransactionAddedToMempool;
/**
* Notifies listeners of a block being connected.
* Provides a vector of transactions evicted from the mempool as a result.
*/
boost::signals2::signal<void (const std::shared_ptr<const CBlock> &, const CBlockIndex *pindex, const std::vector<CTransactionRef> &)> BlockConnected;
/** Notifies listeners of a block being disconnected */
boost::signals2::signal<void (const std::shared_ptr<const CBlock> &)> BlockDisconnected;
/** Notifies listeners of a new active block chain. */
boost::signals2::signal<void (const CBlockLocator &)> SetBestChain;
/** Notifies listeners about an inventory item being seen on the network. */
boost::signals2::signal<void (const uint256 &)> Inventory;
/** Tells listeners to broadcast their data. */
boost::signals2::signal<void (int64_t nBestBlockTime, CConnman* connman)> Broadcast;
/**
* Notifies listeners of a block validation result.
* If the provided CValidationState IsValid, the provided block
* is guaranteed to be the current best block at the time the
* callback was generated (not necessarily now)
*/
boost::signals2::signal<void (const CBlock&, const CValidationState&)> BlockChecked;
/** Notifies listeners that a key for mining is required (coinbase) */
boost::signals2::signal<void (std::shared_ptr<CReserveScript>&)> ScriptForMining;
/**
* Notifies listeners that a block which builds directly on our current tip
* has been received and connected to the headers tree, though not validated yet */
boost::signals2::signal<void (const CBlockIndex *, const std::shared_ptr<const CBlock>&)> NewPoWValidBlock;
};
CMainSignals& GetMainSignals();
#endif // BITCOIN_VALIDATIONINTERFACE_H
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