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versionbits: Use dedicated lock instead of cs_main

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This commit is contained in:
Anthony Towns 2020-12-29 22:43:18 +10:00
parent 36a4ba0aaa
commit eccd736f3d
4 changed files with 11 additions and 7 deletions
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2
src/rpc/blockchain.cpp
View file

@ -1361,7 +1361,7 @@ static void BuriedForkDescPushBack(UniValue& softforks, const std::string &name,
softforks.pushKV(name, rv);
}
static void BIP9SoftForkDescPushBack(const CBlockIndex* active_chain_tip, UniValue& softforks, const std::string &name, const Consensus::Params& consensusParams, Consensus::DeploymentPos id) EXCLUSIVE_LOCKS_REQUIRED(cs_main)
static void BIP9SoftForkDescPushBack(const CBlockIndex* active_chain_tip, UniValue& softforks, const std::string &name, const Consensus::Params& consensusParams, Consensus::DeploymentPos id)
{
// For BIP9 deployments.
// Deployments that are never active are hidden.

8
src/validation.cpp
View file

@ -1606,11 +1606,10 @@ void StopScriptCheckWorkerThreads()
scriptcheckqueue.StopWorkerThreads();
}
VersionBitsCache versionbitscache GUARDED_BY(cs_main);
VersionBitsCache versionbitscache;
int32_t ComputeBlockVersion(const CBlockIndex* pindexPrev, const Consensus::Params& params)
{
LOCK(cs_main);
int32_t nVersion = VERSIONBITS_TOP_BITS;
for (int i = 0; i < (int)Consensus::MAX_VERSION_BITS_DEPLOYMENTS; i++) {
@ -1659,9 +1658,8 @@ static bool IsScriptWitnessEnabled(const Consensus::Params& params)
return params.SegwitHeight != std::numeric_limits<int>::max();
}
static unsigned int GetBlockScriptFlags(const CBlockIndex* pindex, const Consensus::Params& consensusparams) EXCLUSIVE_LOCKS_REQUIRED(cs_main) {
AssertLockHeld(cs_main);
static unsigned int GetBlockScriptFlags(const CBlockIndex* pindex, const Consensus::Params& consensusparams)
{
unsigned int flags = SCRIPT_VERIFY_NONE;
// BIP16 didn't become active until Apr 1 2012 (on mainnet, and

3
src/versionbits.cpp
View file

@ -192,6 +192,7 @@ public:
ThresholdState VersionBitsState(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache)
{
LOCK(cache.mutex);
return VersionBitsConditionChecker(pos).GetStateFor(pindexPrev, params, cache.caches[pos]);
}
@ -202,6 +203,7 @@ BIP9Stats VersionBitsStatistics(const CBlockIndex* pindexPrev, const Consensus::
int VersionBitsStateSinceHeight(const CBlockIndex* pindexPrev, const Consensus::Params& params, Consensus::DeploymentPos pos, VersionBitsCache& cache)
{
LOCK(cache.mutex);
return VersionBitsConditionChecker(pos).GetStateSinceHeightFor(pindexPrev, params, cache.caches[pos]);
}
@ -212,6 +214,7 @@ uint32_t VersionBitsMask(const Consensus::Params& params, Consensus::DeploymentP
void VersionBitsCache::Clear()
{
LOCK(mutex);
for (unsigned int d = 0; d < Consensus::MAX_VERSION_BITS_DEPLOYMENTS; d++) {
caches[d].clear();
}

5
src/versionbits.h
View file

@ -6,6 +6,8 @@
#define BITCOIN_VERSIONBITS_H
#include <chain.h>
#include <sync.h>
#include <map>
/** What block version to use for new blocks (pre versionbits) */
@ -75,7 +77,8 @@ public:
* keyed by the bit position used to signal support. */
struct VersionBitsCache
{
ThresholdConditionCache caches[Consensus::MAX_VERSION_BITS_DEPLOYMENTS];
Mutex mutex;
ThresholdConditionCache caches[Consensus::MAX_VERSION_BITS_DEPLOYMENTS] GUARDED_BY(mutex);
void Clear();
};