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Merge bitcoin/bitcoin#30186: fuzz: increase txorphan harness stability

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8defc182a3 scripted-diff: Replace nNextSweep with m_next_sweep (marcofleon)
0048680467 increase txorphan harness stability (marcofleon)

Pull request description:

  This moves `nNextSweep` from being a static variable in `LimitOrphans` to being a member of the `TxOrphanage` class. This improves the stability of the `txorphan` fuzz harness, as each orphanage (created every iteration) now has its own value for `nNextSweep`.

ACKs for top commit:
  maflcko:
    utACK 8defc182a3
  dergoegge:
    Code review ACK 8defc182a3
  glozow:
    utACK 8defc182a3, I can rebase on this pretty easily

Tree-SHA512: 54d4a5074def764f6c895308b94e417662d2f21f157925421131745f22743907df59971f4ce545063658cd74ec133792cdd8df96ae3e69af8314e9b0ff899d48
This commit is contained in:
merge-script
2024-06-03 09:59:54 +01:00
parent 457e1846d2 8defc182a3
commit e18accc5f5
2 changed files with 5 additions and 3 deletions
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5
src/txorphanage.cpp
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@@ -119,9 +119,8 @@ void TxOrphanage::LimitOrphans(unsigned int max_orphans, FastRandomContext& rng)
LOCK(m_mutex);
unsigned int nEvicted = 0;
static NodeSeconds nNextSweep;
auto nNow{Now<NodeSeconds>()};
if (nNextSweep <= nNow) {
if (m_next_sweep <= nNow) {
// Sweep out expired orphan pool entries:
int nErased = 0;
auto nMinExpTime{nNow + ORPHAN_TX_EXPIRE_TIME - ORPHAN_TX_EXPIRE_INTERVAL};
@@ -136,7 +135,7 @@ void TxOrphanage::LimitOrphans(unsigned int max_orphans, FastRandomContext& rng)
}
}
// Sweep again 5 minutes after the next entry that expires in order to batch the linear scan.
nNextSweep = nMinExpTime + ORPHAN_TX_EXPIRE_INTERVAL;
m_next_sweep = nMinExpTime + ORPHAN_TX_EXPIRE_INTERVAL;
if (nErased > 0) LogPrint(BCLog::TXPACKAGES, "Erased %d orphan tx due to expiration\n", nErased);
}
while (m_orphans.size() > max_orphans)

3
src/txorphanage.h
View File

@@ -105,6 +105,9 @@ protected:
/** Erase an orphan by wtxid */
int EraseTxNoLock(const Wtxid& wtxid) EXCLUSIVE_LOCKS_REQUIRED(m_mutex);
/** Timestamp for the next scheduled sweep of expired orphans */
NodeSeconds m_next_sweep GUARDED_BY(m_mutex){0s};
};
#endif // BITCOIN_TXORPHANAGE_H