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Make ValidationInterface signals-type-agnostic

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(by hiding boost::signals stuff in the .cpp)

This allows us to give it a bit more intelligence as we move
forward, including routing some signals through CScheduler. While
the introduction of a "internals" pointer in the class is pretty
ugly, the fact that we no longer need to include boost/signals
directly from validationinterface.h is very much worth the loss.
This commit is contained in:
Matt Corallo
2017-01-19 16:17:14 -05:00
parent ff6a834fc3
commit 3a19fed9db
2 changed files with 117 additions and 53 deletions
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62
src/validationinterface.h
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@@ -6,7 +6,6 @@
#ifndef BITCOIN_VALIDATIONINTERFACE_H
#define BITCOIN_VALIDATIONINTERFACE_H
#include <boost/signals2/signal.hpp>
#include <memory>
#include "primitives/transaction.h" // CTransaction(Ref)
@@ -32,49 +31,60 @@ 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 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;
virtual void UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) {}
/** Notifies listeners of a transaction having been added to mempool. */
boost::signals2::signal<void (const CTransactionRef &)> TransactionAddedToMempool;
virtual void TransactionAddedToMempool(const CTransactionRef &ptxn) {}
/**
* 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;
virtual void BlockConnected(const std::shared_ptr<const CBlock> &block, const CBlockIndex *pindex, const std::vector<CTransactionRef> &txnConflicted) {}
/** 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;
virtual void BlockDisconnected(const std::shared_ptr<const CBlock> &block) {}
/** Notifies listeners of the new active block chain on-disk. */
virtual void SetBestChain(const CBlockLocator &locator) {}
/** Notifies listeners about an inventory item being seen on the network. */
boost::signals2::signal<void (const uint256 &)> Inventory;
virtual void Inventory(const uint256 &hash) {}
/** Tells listeners to broadcast their data. */
boost::signals2::signal<void (int64_t nBestBlockTime, CConnman* connman)> Broadcast;
virtual void ResendWalletTransactions(int64_t nBestBlockTime, CConnman* connman) {}
/**
* 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;
virtual void BlockChecked(const CBlock&, const CValidationState&) {}
/**
* 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;
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 MainSignalsInstance;
class CMainSignals {
private:
std::unique_ptr<MainSignalsInstance> m_internals;
friend void ::RegisterValidationInterface(CValidationInterface*);
friend void ::UnregisterValidationInterface(CValidationInterface*);
friend void ::UnregisterAllValidationInterfaces();
public:
CMainSignals();
void UpdatedBlockTip(const CBlockIndex *, const CBlockIndex *, bool fInitialDownload);
void TransactionAddedToMempool(const CTransactionRef &);
void BlockConnected(const std::shared_ptr<const CBlock> &, const CBlockIndex *pindex, const std::vector<CTransactionRef> &);
void BlockDisconnected(const std::shared_ptr<const CBlock> &);
void UpdatedTransaction(const uint256 &);
void SetBestChain(const CBlockLocator &);
void Inventory(const uint256 &);
void Broadcast(int64_t nBestBlockTime, CConnman* connman);
void BlockChecked(const CBlock&, const CValidationState&);
void NewPoWValidBlock(const CBlockIndex *, const std::shared_ptr<const CBlock>&);
};
CMainSignals& GetMainSignals();