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Merge bitcoin/bitcoin#26144: [24.x] wallet: Fix nNextResend data race in ResubmitWalletTransactions

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fad61573ed547615f73710cb59b2fb0ecafed127 Fix nNextResend data race in ResubmitWalletTransactions (MacroFake)

Pull request description:

  Identical commit id from https://github.com/bitcoin/bitcoin/pull/26132

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Tree-SHA512: 9404e2e10ba059c412e282abbf9bef581cf5ddcac36cf05da1dff3927b5015e12469238c402c28308a774fdd969d1039e595d5e2caca0902977ae0a72746ff43
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MacroFake 2022-09-21 09:57:00 +02:00
commit ce3cb2bbe7
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2 changed files with 4 additions and 4 deletions
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6
src/wallet/wallet.cpp
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@ -1907,7 +1907,7 @@ std::set<uint256> CWallet::GetTxConflicts(const CWalletTx& wtx) const
// mempool to relay them. On startup, we will do this for all unconfirmed
// transactions but will not ask the mempool to relay them. We do this on startup
// to ensure that our own mempool is aware of our transactions, and to also
// initialize nNextResend so that the actual rebroadcast is scheduled. There
// initialize m_next_resend so that the actual rebroadcast is scheduled. There
// is a privacy side effect here as not broadcasting on startup also means that we won't
// inform the world of our wallet's state, particularly if the wallet (or node) is not
// yet synced.
@ -1941,9 +1941,9 @@ void CWallet::ResubmitWalletTransactions(bool relay, bool force)
// Do this infrequently and randomly to avoid giving away
// that these are our transactions.
if (!force && GetTime() < nNextResend) return;
if (!force && GetTime() < m_next_resend) return;
// resend 12-36 hours from now, ~1 day on average.
nNextResend = GetTime() + (12 * 60 * 60) + GetRand(24 * 60 * 60);
m_next_resend = GetTime() + (12 * 60 * 60) + GetRand(24 * 60 * 60);
int submitted_tx_count = 0;

2
src/wallet/wallet.h
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@ -250,7 +250,7 @@ private:
int nWalletVersion GUARDED_BY(cs_wallet){FEATURE_BASE};
/** The next scheduled rebroadcast of wallet transactions. */
int64_t nNextResend = 0;
std::atomic<int64_t> m_next_resend{};
/** Whether this wallet will submit newly created transactions to the node's mempool and
* prompt rebroadcasts (see ResendWalletTransactions()). */
bool fBroadcastTransactions = false;