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-rw-r--r--src/Makefile.test.include1
-rw-r--r--src/chainparams.cpp10
-rw-r--r--src/checkpoints.cpp10
-rw-r--r--src/checkpoints.h3
-rw-r--r--src/consensus/params.h1
-rw-r--r--src/main.cpp20
-rw-r--r--src/test/Checkpoints_tests.cpp27
7 files changed, 20 insertions, 52 deletions
diff --git a/src/Makefile.test.include b/src/Makefile.test.include
index ef30eeb4ae..0878d8234c 100644
--- a/src/Makefile.test.include
+++ b/src/Makefile.test.include
@@ -50,7 +50,6 @@ BITCOIN_TESTS =\
test/bip32_tests.cpp \
test/blockencodings_tests.cpp \
test/bloom_tests.cpp \
- test/Checkpoints_tests.cpp \
test/coins_tests.cpp \
test/compress_tests.cpp \
test/crypto_tests.cpp \
diff --git a/src/chainparams.cpp b/src/chainparams.cpp
index 3ad9f4d2d3..69514617b6 100644
--- a/src/chainparams.cpp
+++ b/src/chainparams.cpp
@@ -97,6 +97,9 @@ public:
consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1479168000; // November 15th, 2016.
consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1510704000; // November 15th, 2017.
+ // The best chain should have at least this much work.
+ consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000002cb971dd56d1c583c20f90");
+
/**
* The message start string is designed to be unlikely to occur in normal data.
* The characters are rarely used upper ASCII, not valid as UTF-8, and produce
@@ -194,6 +197,9 @@ public:
consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 1462060800; // May 1st 2016
consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 1493596800; // May 1st 2017
+ // The best chain should have at least this much work.
+ consensus.nMinimumChainWork = uint256S("0x0000000000000000000000000000000000000000000000198b4def2baa9338d6");
+
pchMessageStart[0] = 0x0b;
pchMessageStart[1] = 0x11;
pchMessageStart[2] = 0x09;
@@ -228,6 +234,7 @@ public:
fMineBlocksOnDemand = false;
fTestnetToBeDeprecatedFieldRPC = true;
+
checkpointData = (CCheckpointData) {
boost::assign::map_list_of
( 546, uint256S("000000002a936ca763904c3c35fce2f3556c559c0214345d31b1bcebf76acb70")),
@@ -270,6 +277,9 @@ public:
consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nStartTime = 0;
consensus.vDeployments[Consensus::DEPLOYMENT_SEGWIT].nTimeout = 999999999999ULL;
+ // The best chain should have at least this much work.
+ consensus.nMinimumChainWork = uint256S("0x00");
+
pchMessageStart[0] = 0xfa;
pchMessageStart[1] = 0xbf;
pchMessageStart[2] = 0xb5;
diff --git a/src/checkpoints.cpp b/src/checkpoints.cpp
index aefddce464..d22c188c16 100644
--- a/src/checkpoints.cpp
+++ b/src/checkpoints.cpp
@@ -55,16 +55,6 @@ namespace Checkpoints {
return fWorkBefore / (fWorkBefore + fWorkAfter);
}
- int GetTotalBlocksEstimate(const CCheckpointData& data)
- {
- const MapCheckpoints& checkpoints = data.mapCheckpoints;
-
- if (checkpoints.empty())
- return 0;
-
- return checkpoints.rbegin()->first;
- }
-
CBlockIndex* GetLastCheckpoint(const CCheckpointData& data)
{
const MapCheckpoints& checkpoints = data.mapCheckpoints;
diff --git a/src/checkpoints.h b/src/checkpoints.h
index cd25ea5379..04346f35ff 100644
--- a/src/checkpoints.h
+++ b/src/checkpoints.h
@@ -19,9 +19,6 @@ struct CCheckpointData;
namespace Checkpoints
{
-//! Return conservative estimate of total number of blocks, 0 if unknown
-int GetTotalBlocksEstimate(const CCheckpointData& data);
-
//! Returns last CBlockIndex* in mapBlockIndex that is a checkpoint
CBlockIndex* GetLastCheckpoint(const CCheckpointData& data);
diff --git a/src/consensus/params.h b/src/consensus/params.h
index d97017d0c4..7aa876d650 100644
--- a/src/consensus/params.h
+++ b/src/consensus/params.h
@@ -61,6 +61,7 @@ struct Params {
int64_t nPowTargetSpacing;
int64_t nPowTargetTimespan;
int64_t DifficultyAdjustmentInterval() const { return nPowTargetTimespan / nPowTargetSpacing; }
+ uint256 nMinimumChainWork;
};
} // namespace Consensus
diff --git a/src/main.cpp b/src/main.cpp
index 191bcff4cc..5f04c19162 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1747,13 +1747,14 @@ bool IsInitialBlockDownload()
return false;
if (fImporting || fReindex)
return true;
- if (fCheckpointsEnabled && chainActive.Height() < Checkpoints::GetTotalBlocksEstimate(chainParams.Checkpoints()))
+ if (chainActive.Tip() == NULL)
return true;
- bool state = (chainActive.Height() < pindexBestHeader->nHeight - 24 * 6 ||
- std::max(chainActive.Tip()->GetBlockTime(), pindexBestHeader->GetBlockTime()) < GetTime() - nMaxTipAge);
- if (!state)
- latchToFalse.store(true, std::memory_order_relaxed);
- return state;
+ if (chainActive.Tip()->nChainWork < UintToArith256(chainParams.GetConsensus().nMinimumChainWork))
+ return true;
+ if (chainActive.Tip()->GetBlockTime() < (GetTime() - nMaxTipAge))
+ return true;
+ latchToFalse.store(true, std::memory_order_relaxed);
+ return false;
}
bool fLargeWorkForkFound = false;
@@ -1781,7 +1782,7 @@ void CheckForkWarningConditions()
{
AssertLockHeld(cs_main);
// Before we get past initial download, we cannot reliably alert about forks
- // (we assume we don't get stuck on a fork before the last checkpoint)
+ // (we assume we don't get stuck on a fork before finishing our initial sync)
if (IsInitialBlockDownload())
return;
@@ -3110,13 +3111,10 @@ bool ActivateBestChain(CValidationState &state, const CChainParams& chainparams,
}
}
// Relay inventory, but don't relay old inventory during initial block download.
- int nBlockEstimate = 0;
- if (fCheckpointsEnabled)
- nBlockEstimate = Checkpoints::GetTotalBlocksEstimate(chainparams.Checkpoints());
{
LOCK(cs_vNodes);
BOOST_FOREACH(CNode* pnode, vNodes) {
- if (nNewHeight > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : nBlockEstimate)) {
+ if (nNewHeight > (pnode->nStartingHeight != -1 ? pnode->nStartingHeight - 2000 : 0)) {
BOOST_REVERSE_FOREACH(const uint256& hash, vHashes) {
pnode->PushBlockHash(hash);
}
diff --git a/src/test/Checkpoints_tests.cpp b/src/test/Checkpoints_tests.cpp
deleted file mode 100644
index 1b7d368e13..0000000000
--- a/src/test/Checkpoints_tests.cpp
+++ /dev/null
@@ -1,27 +0,0 @@
-// Copyright (c) 2011-2015 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-//
-// Unit tests for block-chain checkpoints
-//
-
-#include "checkpoints.h"
-
-#include "uint256.h"
-#include "test/test_bitcoin.h"
-#include "chainparams.h"
-
-#include <boost/test/unit_test.hpp>
-
-using namespace std;
-
-BOOST_FIXTURE_TEST_SUITE(Checkpoints_tests, BasicTestingSetup)
-
-BOOST_AUTO_TEST_CASE(sanity)
-{
- const CCheckpointData& checkpoints = Params(CBaseChainParams::MAIN).Checkpoints();
- BOOST_CHECK(Checkpoints::GetTotalBlocksEstimate(checkpoints) >= 134444);
-}
-
-BOOST_AUTO_TEST_SUITE_END()
generated by cgit v1.2.3 (git 2.26.2) at 2024-07-20 09:52:43 +0000