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refactor: mark stuff as [[nodiscard]] and use Mutex (#4996)

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* refactor: mark some functions as [[nodiscard]] in CDeterministicMN/CDeterministicMNList

* refactor: use a Mutex instead of CCriticalSection
This commit is contained in:
PastaPastaPasta 2022-09-03 06:20:06 -04:00 committed by GitHub
parent b30005d246
commit f72ebeec8c
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5 changed files with 45 additions and 43 deletions
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2
src/evo/cbtx.cpp
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@ -171,7 +171,7 @@ auto CachedGetQcHashesQcIndexedHashes(const CBlockIndex* pindexPrev) ->
std::optional<std::pair<QcHashMap /*qcHashes*/, QcIndexedHashMap /*qcIndexedHashes*/>> {
auto quorums = llmq::quorumBlockProcessor->GetMinedAndActiveCommitmentsUntilBlock(pindexPrev);
static CCriticalSection cs_cache;
static Mutex cs_cache;
static std::map<Consensus::LLMQType, std::vector<const CBlockIndex*>> quorums_cached GUARDED_BY(cs_cache);
static QcHashMap qcHashes_cached GUARDED_BY(cs_cache);
static QcIndexedHashMap qcIndexedHashes_cached GUARDED_BY(cs_cache);

60
src/evo/deterministicmns.h
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@ -88,9 +88,9 @@ public:
SerializationOp(s, CSerActionUnserialize(), oldFormat);
}
uint64_t GetInternalId() const;
[[nodiscard]] uint64_t GetInternalId() const;
std::string ToString() const;
[[nodiscard]] std::string ToString() const;
void ToJson(UniValue& obj) const;
};
using CDeterministicMNCPtr = std::shared_ptr<const CDeterministicMN>;
@ -198,12 +198,12 @@ public:
}
}
size_t GetAllMNsCount() const
[[nodiscard]] size_t GetAllMNsCount() const
{
return mnMap.size();
}
size_t GetValidMNsCount() const
[[nodiscard]] size_t GetValidMNsCount() const
{
return ranges::count_if(mnMap, [](const auto& p){ return IsMNValid(*p.second); });
}
@ -241,7 +241,7 @@ public:
}
}
const uint256& GetBlockHash() const
[[nodiscard]] const uint256& GetBlockHash() const
{
return blockHash;
}
@ -249,7 +249,7 @@ public:
{
blockHash = _blockHash;
}
int GetHeight() const
[[nodiscard]] int GetHeight() const
{
return nHeight;
}
@ -257,36 +257,36 @@ public:
{
nHeight = _height;
}
uint32_t GetTotalRegisteredCount() const
[[nodiscard]] uint32_t GetTotalRegisteredCount() const
{
return nTotalRegisteredCount;
}
bool IsMNValid(const uint256& proTxHash) const;
bool IsMNPoSeBanned(const uint256& proTxHash) const;
[[nodiscard]] bool IsMNValid(const uint256& proTxHash) const;
[[nodiscard]] bool IsMNPoSeBanned(const uint256& proTxHash) const;
static bool IsMNValid(const CDeterministicMN& dmn);
static bool IsMNPoSeBanned(const CDeterministicMN& dmn);
bool HasMN(const uint256& proTxHash) const
[[nodiscard]] bool HasMN(const uint256& proTxHash) const
{
return GetMN(proTxHash) != nullptr;
}
bool HasMNByCollateral(const COutPoint& collateralOutpoint) const
[[nodiscard]] bool HasMNByCollateral(const COutPoint& collateralOutpoint) const
{
return GetMNByCollateral(collateralOutpoint) != nullptr;
}
bool HasValidMNByCollateral(const COutPoint& collateralOutpoint) const
[[nodiscard]] bool HasValidMNByCollateral(const COutPoint& collateralOutpoint) const
{
return GetValidMNByCollateral(collateralOutpoint) != nullptr;
}
CDeterministicMNCPtr GetMN(const uint256& proTxHash) const;
CDeterministicMNCPtr GetValidMN(const uint256& proTxHash) const;
CDeterministicMNCPtr GetMNByOperatorKey(const CBLSPublicKey& pubKey) const;
CDeterministicMNCPtr GetMNByCollateral(const COutPoint& collateralOutpoint) const;
CDeterministicMNCPtr GetValidMNByCollateral(const COutPoint& collateralOutpoint) const;
CDeterministicMNCPtr GetMNByService(const CService& service) const;
CDeterministicMNCPtr GetMNByInternalId(uint64_t internalId) const;
CDeterministicMNCPtr GetMNPayee() const;
[[nodiscard]] CDeterministicMNCPtr GetMN(const uint256& proTxHash) const;
[[nodiscard]] CDeterministicMNCPtr GetValidMN(const uint256& proTxHash) const;
[[nodiscard]] CDeterministicMNCPtr GetMNByOperatorKey(const CBLSPublicKey& pubKey) const;
[[nodiscard]] CDeterministicMNCPtr GetMNByCollateral(const COutPoint& collateralOutpoint) const;
[[nodiscard]] CDeterministicMNCPtr GetValidMNByCollateral(const COutPoint& collateralOutpoint) const;
[[nodiscard]] CDeterministicMNCPtr GetMNByService(const CService& service) const;
[[nodiscard]] CDeterministicMNCPtr GetMNByInternalId(uint64_t internalId) const;
[[nodiscard]] CDeterministicMNCPtr GetMNPayee() const;
/**
* Calculates the projected MN payees for the next *count* blocks. The result is not guaranteed to be correct
@ -294,7 +294,7 @@ public:
* @param count
* @return
*/
std::vector<CDeterministicMNCPtr> GetProjectedMNPayees(int nCount) const;
[[nodiscard]] std::vector<CDeterministicMNCPtr> GetProjectedMNPayees(int nCount) const;
/**
* Calculate a quorum based on the modifier. The resulting list is deterministically sorted by score
@ -302,15 +302,15 @@ public:
* @param modifier
* @return
*/
std::vector<CDeterministicMNCPtr> CalculateQuorum(size_t maxSize, const uint256& modifier) const;
std::vector<std::pair<arith_uint256, CDeterministicMNCPtr>> CalculateScores(const uint256& modifier) const;
[[nodiscard]] std::vector<CDeterministicMNCPtr> CalculateQuorum(size_t maxSize, const uint256& modifier) const;
[[nodiscard]] std::vector<std::pair<arith_uint256, CDeterministicMNCPtr>> CalculateScores(const uint256& modifier) const;
/**
* Calculates the maximum penalty which is allowed at the height of this MN list. It is dynamic and might change
* for every block.
* @return
*/
int CalcMaxPoSePenalty() const;
[[nodiscard]] int CalcMaxPoSePenalty() const;
/**
* Returns a the given percentage from the max penalty for this MN list. Always use this method to calculate the
@ -320,7 +320,7 @@ public:
* @param percent
* @return
*/
int CalcPenalty(int percent) const;
[[nodiscard]] int CalcPenalty(int percent) const;
/**
* Punishes a MN for misbehavior. If the resulting penalty score of the MN reaches the max penalty, it is banned.
@ -338,9 +338,9 @@ public:
*/
void PoSeDecrease(const uint256& proTxHash);
CDeterministicMNListDiff BuildDiff(const CDeterministicMNList& to) const;
CSimplifiedMNListDiff BuildSimplifiedDiff(const CDeterministicMNList& to, bool extended) const;
CDeterministicMNList ApplyDiff(const CBlockIndex* pindex, const CDeterministicMNListDiff& diff) const;
[[nodiscard]] CDeterministicMNListDiff BuildDiff(const CDeterministicMNList& to) const;
[[nodiscard]] CSimplifiedMNListDiff BuildSimplifiedDiff(const CDeterministicMNList& to, bool extended) const;
[[nodiscard]] CDeterministicMNList ApplyDiff(const CBlockIndex* pindex, const CDeterministicMNListDiff& diff) const;
void AddMN(const CDeterministicMNCPtr& dmn, bool fBumpTotalCount = true);
void UpdateMN(const CDeterministicMN& oldDmn, const std::shared_ptr<const CDeterministicMNState>& pdmnState);
@ -349,12 +349,12 @@ public:
void RemoveMN(const uint256& proTxHash);
template <typename T>
bool HasUniqueProperty(const T& v) const
[[nodiscard]] bool HasUniqueProperty(const T& v) const
{
return mnUniquePropertyMap.count(::SerializeHash(v)) != 0;
}
template <typename T>
CDeterministicMNCPtr GetUniquePropertyMN(const T& v) const
[[nodiscard]] CDeterministicMNCPtr GetUniquePropertyMN(const T& v) const
{
auto p = mnUniquePropertyMap.find(::SerializeHash(v));
if (!p) {

22
src/evo/evodb.h
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@ -32,7 +32,7 @@ public:
class CEvoDB
{
public:
CCriticalSection cs;
Mutex cs;
private:
CDBWrapper db;
@ -46,41 +46,41 @@ private:
public:
explicit CEvoDB(size_t nCacheSize, bool fMemory = false, bool fWipe = false);
std::unique_ptr<CEvoDBScopedCommitter> BeginTransaction()
std::unique_ptr<CEvoDBScopedCommitter> BeginTransaction() LOCKS_EXCLUDED(cs)
{
LOCK(cs);
return std::make_unique<CEvoDBScopedCommitter>(*this);
}
CurTransaction& GetCurTransaction()
CurTransaction& GetCurTransaction() EXCLUSIVE_LOCKS_REQUIRED(cs)
{
AssertLockHeld(cs); // lock must be held from outside as long as the DB transaction is used
return curDBTransaction;
}
template <typename K, typename V>
bool Read(const K& key, V& value)
bool Read(const K& key, V& value) LOCKS_EXCLUDED(cs)
{
LOCK(cs);
return curDBTransaction.Read(key, value);
}
template <typename K, typename V>
void Write(const K& key, const V& value)
void Write(const K& key, const V& value) LOCKS_EXCLUDED(cs)
{
LOCK(cs);
curDBTransaction.Write(key, value);
}
template <typename K>
bool Exists(const K& key)
bool Exists(const K& key) LOCKS_EXCLUDED(cs)
{
LOCK(cs);
return curDBTransaction.Exists(key);
}
template <typename K>
void Erase(const K& key)
void Erase(const K& key) LOCKS_EXCLUDED(cs)
{
LOCK(cs);
curDBTransaction.Erase(key);
@ -91,12 +91,12 @@ public:
return db;
}
size_t GetMemoryUsage() const
[[nodiscard]] size_t GetMemoryUsage() const
{
return rootDBTransaction.GetMemoryUsage();
}
bool CommitRootTransaction();
bool CommitRootTransaction() LOCKS_EXCLUDED(cs);
bool IsEmpty() { return db.IsEmpty(); }
@ -106,8 +106,8 @@ public:
private:
// only CEvoDBScopedCommitter is allowed to invoke these
friend class CEvoDBScopedCommitter;
void CommitCurTransaction();
void RollbackCurTransaction();
void CommitCurTransaction() LOCKS_EXCLUDED(cs);
void RollbackCurTransaction() LOCKS_EXCLUDED(cs);
};
extern std::unique_ptr<CEvoDB> evoDb;

2
src/llmq/blockprocessor.cpp
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@ -502,6 +502,7 @@ CFinalCommitmentPtr CQuorumBlockProcessor::GetMinedCommitment(Consensus::LLMQTyp
// The returned quorums are in reversed order, so the most recent one is at index 0
std::vector<const CBlockIndex*> CQuorumBlockProcessor::GetMinedCommitmentsUntilBlock(Consensus::LLMQType llmqType, const CBlockIndex* pindex, size_t maxCount) const
{
AssertLockNotHeld(evoDb.cs);
LOCK(evoDb.cs);
auto dbIt = evoDb.GetCurTransaction().NewIteratorUniquePtr();
@ -545,6 +546,7 @@ std::vector<const CBlockIndex*> CQuorumBlockProcessor::GetMinedCommitmentsUntilB
std::optional<const CBlockIndex*> CQuorumBlockProcessor::GetLastMinedCommitmentsByQuorumIndexUntilBlock(Consensus::LLMQType llmqType, const CBlockIndex* pindex, int quorumIndex, size_t cycle) const
{
AssertLockNotHeld(evoDb.cs);
LOCK(evoDb.cs);
auto dbIt = evoDb.GetCurTransaction().NewIteratorUniquePtr();

2
src/llmq/snapshot.cpp
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@ -377,7 +377,6 @@ std::optional<CQuorumSnapshot> CQuorumSnapshotManager::GetSnapshotForBlock(const
if (quorumSnapshotCache.get(snapshotHash, snapshot)) {
return snapshot;
}
LOCK(evoDb.cs);
if (evoDb.Read(std::make_pair(DB_QUORUM_SNAPSHOT, snapshotHash), snapshot)) {
quorumSnapshotCache.insert(snapshotHash, snapshot);
return snapshot;
@ -391,6 +390,7 @@ void CQuorumSnapshotManager::StoreSnapshotForBlock(const Consensus::LLMQType llm
auto snapshotHash = ::SerializeHash(std::make_pair(llmqType, pindex->GetBlockHash()));
// LOCK(cs_main);
AssertLockNotHeld(evoDb.cs);
LOCK2(snapshotCacheCs, evoDb.cs);
evoDb.GetRawDB().Write(std::make_pair(DB_QUORUM_SNAPSHOT, snapshotHash), snapshot);
quorumSnapshotCache.insert(snapshotHash, snapshot);