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Enforce that there is only one changeset at a time

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This commit is contained in:
Suhas Daftuar 2024-10-14 10:19:44 -04:00
parent 7fb62f7db6
commit 18829194ca
1 changed files with 8 additions and 2 deletions
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10
src/txmempool.h
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@ -811,7 +811,7 @@ public:
class ChangeSet {
public:
explicit ChangeSet(CTxMemPool* pool) : m_pool(pool) {}
~ChangeSet() = default;
~ChangeSet() EXCLUSIVE_LOCKS_REQUIRED(m_pool->cs) { m_pool->m_have_changeset = false; }
ChangeSet(const ChangeSet&) = delete;
ChangeSet& operator=(const ChangeSet&) = delete;
@ -860,7 +860,13 @@ public:
friend class CTxMemPool;
};
std::unique_ptr<ChangeSet> GetChangeSet() EXCLUSIVE_LOCKS_REQUIRED(cs) { return std::make_unique<ChangeSet>(this); }
std::unique_ptr<ChangeSet> GetChangeSet() EXCLUSIVE_LOCKS_REQUIRED(cs) {
Assume(!m_have_changeset);
m_have_changeset = true;
return std::make_unique<ChangeSet>(this);
}
bool m_have_changeset GUARDED_BY(cs){false};
friend class CTxMemPool::ChangeSet;