1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
// 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 "primitives/transaction.h" // CTransaction(Ref)
#include <functional>
#include <memory>
class CBlock;
class CBlockIndex;
struct CBlockLocator;
class CBlockIndex;
class CConnman;
class CReserveScript;
class CValidationInterface;
class CValidationState;
class uint256;
class CScheduler;
class CTxMemPool;
enum class MemPoolRemovalReason;
// 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();
/**
* Pushes a function to callback onto the notification queue, guaranteeing any
* callbacks generated prior to now are finished when the function is called.
*
* Be very careful blocking on func to be called if any locks are held -
* validation interface clients may not be able to make progress as they often
* wait for things like cs_main, so blocking until func is called with cs_main
* will result in a deadlock (that DEBUG_LOCKORDER will miss).
*/
void CallFunctionInValidationInterfaceQueue(std::function<void ()> func);
class CValidationInterface {
protected:
/** Notifies listeners of updated block chain tip */
virtual void UpdatedBlockTip(const CBlockIndex *pindexNew, const CBlockIndex *pindexFork, bool fInitialDownload) {}
/** Notifies listeners of a transaction having been added to mempool. */
virtual void TransactionAddedToMempool(const CTransactionRef &ptxn) {}
/**
* Notifies listeners of a transaction leaving mempool.
*
* This only fires for transactions which leave mempool because of expiry,
* size limiting, reorg (changes in lock times/coinbase maturity), or
* replacement. This does not include any transactions which are included
* in BlockConnectedDisconnected either in block->vtx or in txnConflicted.
*
* Called on a background thread.
*/
virtual void TransactionRemovedFromMempool(const CTransactionRef &ptx) {}
/**
* Notifies listeners of a block being connected.
* Provides a vector of transactions evicted from the mempool as a result.
*/
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 */
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. */
virtual void Inventory(const uint256 &hash) {}
/** Tells listeners to broadcast their data. */
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)
*/
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 */
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();
friend void ::CallFunctionInValidationInterfaceQueue(std::function<void ()> func);
void MempoolEntryRemoved(CTransactionRef tx, MemPoolRemovalReason reason);
public:
/** Register a CScheduler to give callbacks which should run in the background (may only be called once) */
void RegisterBackgroundSignalScheduler(CScheduler& scheduler);
/** Unregister a CScheduler to give callbacks which should run in the background - these callbacks will now be dropped! */
void UnregisterBackgroundSignalScheduler();
/** Call any remaining callbacks on the calling thread */
void FlushBackgroundCallbacks();
/** Register with mempool to call TransactionRemovedFromMempool callbacks */
void RegisterWithMempoolSignals(CTxMemPool& pool);
/** Unregister with mempool */
void UnregisterWithMempoolSignals(CTxMemPool& pool);
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 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();
#endif // BITCOIN_VALIDATIONINTERFACE_H
|
