|
|
|
|
@ -372,8 +372,7 @@ bool static ScanHash(CBlockHeader *pblock, uint256 *phash)
@@ -372,8 +372,7 @@ bool static ScanHash(CBlockHeader *pblock, uint256 *phash)
|
|
|
|
|
{ |
|
|
|
|
while (true) { |
|
|
|
|
pblock->nNonce++; |
|
|
|
|
|
|
|
|
|
*phash = (CHashWriter(SER_GETHASH, 0) << *pblock).GetHash(); |
|
|
|
|
*phash = pblock->GetHash(); |
|
|
|
|
|
|
|
|
|
// Return the nonce if the hash has at least some zero bits,
|
|
|
|
|
// caller will check if it has enough to reach the target
|
|
|
|
|
@ -425,6 +424,56 @@ static bool ProcessBlockFound(CBlock* pblock, CWallet& wallet, CReserveKey& rese
@@ -425,6 +424,56 @@ static bool ProcessBlockFound(CBlock* pblock, CWallet& wallet, CReserveKey& rese
|
|
|
|
|
return true; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
bool static ScanLoop(CBlock *pblock, CBlockIndex *pindexPrev, CWallet *pwallet, CReserveKey& reservekey) |
|
|
|
|
{ |
|
|
|
|
UpdateTime(pblock, pindexPrev); |
|
|
|
|
arith_uint256 hashTarget = arith_uint256().SetCompact(pblock->nBits); |
|
|
|
|
|
|
|
|
|
uint256 hash; |
|
|
|
|
if (ScanHash(pblock, &hash)) { |
|
|
|
|
if (UintToArith256(hash) <= hashTarget) { |
|
|
|
|
// Found a solution
|
|
|
|
|
SetThreadPriority(THREAD_PRIORITY_NORMAL); |
|
|
|
|
LogPrintf("BitcoinMiner:\n"); |
|
|
|
|
LogPrintf("proof-of-work found \n hash: %s \ntarget: %s\n", hash.GetHex(), hashTarget.GetHex()); |
|
|
|
|
ProcessBlockFound(pblock, *pwallet, reservekey); |
|
|
|
|
SetThreadPriority(THREAD_PRIORITY_LOWEST); |
|
|
|
|
|
|
|
|
|
return true; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
return false; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
bool MineBlock(CWallet *pwallet, uint256& hash) |
|
|
|
|
{ |
|
|
|
|
CReserveKey reservekey(pwallet); |
|
|
|
|
unsigned int nExtraNonce = 0; |
|
|
|
|
|
|
|
|
|
while (true) { |
|
|
|
|
CBlockIndex *pindexPrev = chainActive.Tip(); // Actually needs cs_main...
|
|
|
|
|
|
|
|
|
|
auto_ptr<CBlockTemplate> pblocktemplate(CreateNewBlockWithKey(reservekey)); |
|
|
|
|
if (!pblocktemplate.get()) { |
|
|
|
|
return false; |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
CBlock *pblock = &pblocktemplate->block; |
|
|
|
|
IncrementExtraNonce(pblock, pindexPrev, nExtraNonce); |
|
|
|
|
|
|
|
|
|
while (true) { |
|
|
|
|
if (ScanLoop(pblock, pindexPrev, pwallet, reservekey)) { |
|
|
|
|
hash = pblock->GetHash(); |
|
|
|
|
return true; |
|
|
|
|
} |
|
|
|
|
boost::this_thread::interruption_point(); |
|
|
|
|
if (pblock->nNonce >= 0xffff0000) |
|
|
|
|
break; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
void static BitcoinMiner(CWallet *pwallet) |
|
|
|
|
{ |
|
|
|
|
LogPrintf("BitcoinMiner started\n"); |
|
|
|
|
@ -448,7 +497,7 @@ void static BitcoinMiner(CWallet *pwallet)
@@ -448,7 +497,7 @@ void static BitcoinMiner(CWallet *pwallet)
|
|
|
|
|
// Create new block
|
|
|
|
|
//
|
|
|
|
|
unsigned int nTransactionsUpdatedLast = mempool.GetTransactionsUpdated(); |
|
|
|
|
CBlockIndex* pindexPrev = chainActive.Tip(); |
|
|
|
|
CBlockIndex* pindexPrev = chainActive.Tip(); // Actually needs cs_main...
|
|
|
|
|
|
|
|
|
|
auto_ptr<CBlockTemplate> pblocktemplate(CreateNewBlockWithKey(reservekey)); |
|
|
|
|
if (!pblocktemplate.get()) |
|
|
|
|
@ -466,30 +515,10 @@ void static BitcoinMiner(CWallet *pwallet)
@@ -466,30 +515,10 @@ void static BitcoinMiner(CWallet *pwallet)
|
|
|
|
|
// Search
|
|
|
|
|
//
|
|
|
|
|
int64_t nStart = GetTime(); |
|
|
|
|
arith_uint256 hashTarget = arith_uint256().SetCompact(pblock->nBits); |
|
|
|
|
uint256 hash; |
|
|
|
|
while (true) { |
|
|
|
|
// Check if something found
|
|
|
|
|
if (ScanHash(pblock, &hash)) |
|
|
|
|
{ |
|
|
|
|
if (UintToArith256(hash) <= hashTarget) |
|
|
|
|
{ |
|
|
|
|
// Found a solution
|
|
|
|
|
assert(hash == pblock->GetHash()); |
|
|
|
|
|
|
|
|
|
SetThreadPriority(THREAD_PRIORITY_NORMAL); |
|
|
|
|
LogPrintf("BitcoinMiner:\n"); |
|
|
|
|
LogPrintf("proof-of-work found \n hash: %s \ntarget: %s\n", hash.GetHex(), hashTarget.GetHex()); |
|
|
|
|
ProcessBlockFound(pblock, *pwallet, reservekey); |
|
|
|
|
SetThreadPriority(THREAD_PRIORITY_LOWEST); |
|
|
|
|
|
|
|
|
|
// In regression test mode, stop mining after a block is found.
|
|
|
|
|
if (Params().MineBlocksOnDemand()) |
|
|
|
|
throw boost::thread_interrupted(); |
|
|
|
|
|
|
|
|
|
break; |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
if (ScanLoop(pblock, pindexPrev, pwallet, reservekey)) |
|
|
|
|
break; |
|
|
|
|
|
|
|
|
|
// Check for stop or if block needs to be rebuilt
|
|
|
|
|
boost::this_thread::interruption_point(); |
|
|
|
|
@ -503,13 +532,6 @@ void static BitcoinMiner(CWallet *pwallet)
@@ -503,13 +532,6 @@ void static BitcoinMiner(CWallet *pwallet)
|
|
|
|
|
if (pindexPrev != chainActive.Tip()) |
|
|
|
|
break; |
|
|
|
|
|
|
|
|
|
// Update nTime every few seconds
|
|
|
|
|
UpdateTime(pblock, pindexPrev); |
|
|
|
|
if (Params().AllowMinDifficultyBlocks()) |
|
|
|
|
{ |
|
|
|
|
// Changing pblock->nTime can change work required on testnet:
|
|
|
|
|
hashTarget.SetCompact(pblock->nBits); |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
} |
|
|
|
|
|
Pieter Wuille
10 years ago