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author | Wladimir J. van der Laan <laanwj@protonmail.com> | 2021-02-24 09:07:10 +0100 |
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committer | Wladimir J. van der Laan <laanwj@protonmail.com> | 2021-02-24 09:57:21 +0100 |
commit | b59f2787e53318caad6d3292de2cc6e17995d277 (patch) | |
tree | bb9418e42c437df99130c8ad220d53336120836c /src/txmempool.cpp | |
parent | 587c986ccf88daef5e979eaa91163349e36a544d (diff) | |
parent | fd6580e405699ccb051fd2a34525e48d3253673d (diff) |
Merge #18017: txmempool: split epoch logic into class
fd6580e405699ccb051fd2a34525e48d3253673d [refactor] txmempool: split epoch logic into class (Anthony Towns)
Pull request description:
Splits the epoch logic introduced in #17925 into a separate class.
Uses clang's thread safety annotations and encapsulates the data more strongly to reduce chances of bugs from API misuse.
ACKs for top commit:
jonatack:
ACK fd6580e405699ccb051fd2a34525e48d3253673d using clang thread safety annotations looks like a very good idea, and the encapsulation this change adds should improve robustness (and possible unit test-ability) of the code. Verified that changing some of the locking duly provoked build-time warnings with Clang 9 on Debian and that small changes in the new `Epoch` class were covered by failing functional test assertions in `mempool_updatefromblock.py`, `mempool_resurrect.py`, and `mempool_reorg.py`
hebasto:
re-ACK fd6580e405699ccb051fd2a34525e48d3253673d, since my [previous](https://github.com/bitcoin/bitcoin/pull/18017#pullrequestreview-569619362) review:
Tree-SHA512: 7004623faa02b56639aa05ab7a078320a6d8d54ec62d8022876221e33f350f47df51ddff056c0de5be798f8eb39b5c03c2d3f035698555d70abc218e950f2f8c
Diffstat (limited to 'src/txmempool.cpp')
-rw-r--r-- | src/txmempool.cpp | 23 |
1 files changed, 2 insertions, 21 deletions
diff --git a/src/txmempool.cpp b/src/txmempool.cpp index 899835019a..48424a75d0 100644 --- a/src/txmempool.cpp +++ b/src/txmempool.cpp @@ -23,7 +23,7 @@ CTxMemPoolEntry::CTxMemPoolEntry(const CTransactionRef& _tx, const CAmount& _nFe int64_t _nTime, unsigned int _entryHeight, bool _spendsCoinbase, int64_t _sigOpsCost, LockPoints lp) : tx(_tx), nFee(_nFee), nTxWeight(GetTransactionWeight(*tx)), nUsageSize(RecursiveDynamicUsage(tx)), nTime(_nTime), entryHeight(_entryHeight), - spendsCoinbase(_spendsCoinbase), sigOpCost(_sigOpsCost), lockPoints(lp), m_epoch(0) + spendsCoinbase(_spendsCoinbase), sigOpCost(_sigOpsCost), lockPoints(lp) { nCountWithDescendants = 1; nSizeWithDescendants = GetTxSize(); @@ -132,7 +132,7 @@ void CTxMemPool::UpdateTransactionsFromBlock(const std::vector<uint256> &vHashes // include them, and update their CTxMemPoolEntry::m_parents to include this tx. // we cache the in-mempool children to avoid duplicate updates { - const auto epoch = GetFreshEpoch(); + WITH_FRESH_EPOCH(m_epoch); for (; iter != mapNextTx.end() && iter->first->hash == hash; ++iter) { const uint256 &childHash = iter->second->GetHash(); txiter childIter = mapTx.find(childHash); @@ -1119,22 +1119,3 @@ void CTxMemPool::SetIsLoaded(bool loaded) LOCK(cs); m_is_loaded = loaded; } - - -CTxMemPool::EpochGuard CTxMemPool::GetFreshEpoch() const -{ - return EpochGuard(*this); -} -CTxMemPool::EpochGuard::EpochGuard(const CTxMemPool& in) : pool(in) -{ - assert(!pool.m_has_epoch_guard); - ++pool.m_epoch; - pool.m_has_epoch_guard = true; -} - -CTxMemPool::EpochGuard::~EpochGuard() -{ - // prevents stale results being used - ++pool.m_epoch; - pool.m_has_epoch_guard = false; -} |