#include <boost/assign/list_of.hpp>
#include "kernel.h"
+#include "kernel_worker.h"
#include "txdb.h"
extern unsigned int nStakeMaxAge;
(149000, 0x48f2bdc4u )
(160000, 0x789df0f0u )
(200000, 0x01ec1503u )
+ (221047, 0x0b39ef50u )
+ (243100, 0xe928d83au )
;
// Hard checkpoints of stake modifiers to ensure they are deterministic (testNet)
if (fSelected && hashSelection < hashBest)
{
hashBest = hashSelection;
- *pindexSelected = (const CBlockIndex*) pindex;
+ *pindexSelected = pindex;
}
else if (!fSelected)
{
fSelected = true;
hashBest = hashSelection;
- *pindexSelected = (const CBlockIndex*) pindex;
+ *pindexSelected = pindex;
}
}
if (fDebug && GetBoolArg("-printstakemodifier"))
return true;
}
-
-#ifdef USE_ASM
-
-// kernel padding
-static const uint32_t block1_suffix[9] = { 0x80000000, 0, 0, 0, 0, 0, 0, 0, 0x000000e0 };
-static const uint32_t block1_suffix_4way[4 * 9] = {
- 0x80000000, 0x80000000, 0x80000000, 0x80000000,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0x000000e0, 0x000000e0, 0x000000e0, 0x000000e0
-};
-
-// hash padding
-static const uint32_t block2_suffix[8] = { 0x80000000, 0, 0, 0, 0, 0, 0, 0x00000100 };
-static const uint32_t block2_suffix_4way[4 * 8] = {
- 0x80000000, 0x80000000, 0x80000000, 0x80000000,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0, 0, 0, 0,
- 0x00000100, 0x00000100, 0x00000100, 0x00000100
-};
-
-// Sha256 initial state
-static const uint32_t sha256_initial[8] = { 0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19 };
-
-extern "C" int sha256_use_4way();
-#ifndef __i386__
-extern "C" void sha256_transform(uint32_t *state, const uint32_t *block, int swap);
-#endif
-
-extern "C" void sha256_init_4way(uint32_t *state);
-extern "C" void sha256_transform_4way(uint32_t *state, const uint32_t *block, int swap);
-
-#ifdef USE_SSSE3
-#include <immintrin.h>
-
-extern "C" int sha256_use_ssse3();
-bool fUseSSSE3 = sha256_use_ssse3() != 0;
-
-inline void copyrow_swap32(uint32_t *to, uint32_t *from)
-{
- if (!fUseSSSE3)
- {
- for (int i = 0; i < 4; i++)
- to[i] = __builtin_bswap32(from[i]);
- }
- else
- {
- __m128i mask = _mm_set_epi8(12, 13, 14, 15, 8, 9, 10, 11, 4, 5, 6, 7, 0, 1, 2, 3);
- _mm_storeu_si128((__m128i *)&to[0], _mm_shuffle_epi8(_mm_loadu_si128((__m128i *)&from[0]), mask));
- }
-}
-#else
-inline void copyrow_swap32(uint32_t *to, uint32_t *from)
-{
- for (int i = 0; i < 4; i++)
- to[i] = __builtin_bswap32(from[i]);
-}
-#endif
-
-bool fUse4Way = sha256_use_4way() != 0;
-
-class ScanMidstateWorker
-{
-public:
- ScanMidstateWorker()
- { }
- ScanMidstateWorker(unsigned char *kernel, uint32_t nBits, uint32_t nInputTxTime, int64_t nValueIn, uint32_t nIntervalBegin, uint32_t nIntervalEnd)
- : kernel(kernel), nBits(nBits), nInputTxTime(nInputTxTime), bnValueIn(nValueIn), nIntervalBegin(nIntervalBegin), nIntervalEnd(nIntervalEnd)
- {
- solutions = vector<std::pair<uint256,uint32_t> >();
- }
-
- void Do_4way()
- {
- SetThreadPriority(THREAD_PRIORITY_LOWEST);
-
- // Compute maximum possible target to filter out majority of obviously insufficient hashes
- CBigNum bnTargetPerCoinDay;
- bnTargetPerCoinDay.SetCompact(nBits);
- uint256 nMaxTarget = (bnTargetPerCoinDay * bnValueIn * nStakeMaxAge / COIN / nOneDay).getuint256();
-
- uint32_t blocks1[4 * 16] __attribute__((aligned(16)));
- uint32_t blocks2[4 * 16] __attribute__((aligned(16)));
- uint32_t candidates[4 * 8] __attribute__((aligned(16)));
-
- vector<uint32_t> vRow = vector<uint32_t>(4);
- uint32_t *pnKernel = (uint32_t *) kernel;
-
- for(int i = 0; i < 7; i++)
- {
- fill(vRow.begin(), vRow.end(), pnKernel[i]);
- copyrow_swap32(&blocks1[i*4], &vRow[0]);
- }
-
- memcpy(&blocks1[28], &block1_suffix_4way[0], 36*4); // sha256 padding
- memcpy(&blocks2[32], &block2_suffix_4way[0], 32*4);
-
- uint32_t nTimeStamps[4] = {0, 0, 0, 0};
- uint32_t nHashes[4] = {0, 0, 0, 0};
-
- // Search forward in time from the given timestamp
- // Stopping search in case of shutting down
- for (uint32_t nTimeTx=nIntervalBegin, nMaxTarget32 = nMaxTarget.Get32(7); nTimeTx<nIntervalEnd && !fShutdown; nTimeTx +=4)
- {
- sha256_init_4way(blocks2);
- sha256_init_4way(candidates);
-
- nTimeStamps[0] = nTimeTx;
- nTimeStamps[1] = nTimeTx+1;
- nTimeStamps[2] = nTimeTx+2;
- nTimeStamps[3] = nTimeTx+3;
-
- copyrow_swap32(&blocks1[24], &nTimeStamps[0]); // Kernel timestamps
-
- sha256_transform_4way(&blocks2[0], &blocks1[0], 0); // first hashing
- sha256_transform_4way(&candidates[0], &blocks2[0], 0); // second hashing
- copyrow_swap32(&nHashes[0], &candidates[28]);
-
- for(int nResult = 0; nResult < 4; nResult++)
- {
- if (nHashes[nResult] <= nMaxTarget32) // Possible hit
- {
- uint256 nHashProofOfStake = 0;
- uint32_t *pnHashProofOfStake = (uint32_t *) &nHashProofOfStake;
-
- for (int i = 0; i < 7; i++)
- pnHashProofOfStake[i] = __builtin_bswap32(candidates[(i*4) + nResult]);
- pnHashProofOfStake[7] = nHashes[nResult];
-
- CBigNum bnCoinDayWeight = bnValueIn * GetWeight((int64_t)nInputTxTime, (int64_t)nTimeStamps[nResult]) / COIN / nOneDay;
- CBigNum bnTargetProofOfStake = bnCoinDayWeight * bnTargetPerCoinDay;
-
- if (bnTargetProofOfStake >= CBigNum(nHashProofOfStake))
- solutions.push_back(std::pair<uint256,uint32_t>(nHashProofOfStake, nTimeStamps[nResult]));
- }
- }
- }
- }
-
- void Do_oneway()
- {
- SetThreadPriority(THREAD_PRIORITY_LOWEST);
-
- // Compute maximum possible target to filter out majority of obviously insufficient hashes
- CBigNum bnTargetPerCoinDay;
- bnTargetPerCoinDay.SetCompact(nBits);
- uint256 nMaxTarget = (bnTargetPerCoinDay * bnValueIn * nStakeMaxAge / COIN / nOneDay).getuint256();
-
-#ifdef __i386__
- SHA256_CTX ctx, workerCtx;
- // Init new sha256 context and update it
- // with first 24 bytes of kernel
- SHA256_Init(&ctx);
- SHA256_Update(&ctx, kernel, 8 + 16);
- workerCtx = ctx; // save context
-
- // Sha256 result buffer
- uint32_t hashProofOfStake[8];
- uint256 *pnHashProofOfStake = (uint256 *)&hashProofOfStake;
-
- // Search forward in time from the given timestamp
- // Stopping search in case of shutting down
- for (uint32_t nTimeTx=nIntervalBegin, nMaxTarget32 = nMaxTarget.Get32(7); nTimeTx<nIntervalEnd && !fShutdown; nTimeTx++)
- {
- // Complete first hashing iteration
- uint256 hash1;
- SHA256_Update(&ctx, (unsigned char*)&nTimeTx, 4);
- SHA256_Final((unsigned char*)&hash1, &ctx);
-
- // Restore context
- ctx = workerCtx;
-
- // Finally, calculate kernel hash
- SHA256((unsigned char*)&hash1, sizeof(hashProofOfStake), (unsigned char*)&hashProofOfStake);
-
- // Skip if hash doesn't satisfy the maximum target
- if (hashProofOfStake[7] > nMaxTarget32)
- continue;
-
- CBigNum bnCoinDayWeight = bnValueIn * GetWeight((int64_t)nInputTxTime, (int64_t)nTimeTx) / COIN / nOneDay;
- CBigNum bnTargetProofOfStake = bnCoinDayWeight * bnTargetPerCoinDay;
-
- if (bnTargetProofOfStake >= CBigNum(*pnHashProofOfStake))
- solutions.push_back(std::pair<uint256,uint32_t>(*pnHashProofOfStake, nTimeTx));
- }
-#else
- uint32_t block1[16] __attribute__((aligned(16)));
- uint32_t block2[16] __attribute__((aligned(16)));
- uint32_t candidate[8] __attribute__((aligned(16)));
-
- memcpy(&block1[7], &block1_suffix[0], 36); // sha256 padding
- memcpy(&block2[8], &block2_suffix[0], 32);
-
- uint32_t *pnKernel = (uint32_t *) kernel;
- copyrow_swap32(&block1[0], pnKernel);
- block1[4] = __builtin_bswap32(pnKernel[4]);
- block1[5] = __builtin_bswap32(pnKernel[5]);
-
- // Search forward in time from the given timestamp
- // Stopping search in case of shutting down
- for (uint32_t nTimeTx=nIntervalBegin, nMaxTarget32 = nMaxTarget.Get32(7); nTimeTx<nIntervalEnd && !fShutdown; nTimeTx++)
- {
- memcpy(&block2[0], &sha256_initial[0], 32);
- memcpy(&candidate[0], &sha256_initial[0], 32);
-
- block1[6] = __builtin_bswap32(nTimeTx);
-
- sha256_transform(&block2[0], &block1[0], 0); // first hashing
- sha256_transform(&candidate[0], &block2[0], 0); // second hashing
-
- uint32_t nHash7 = __builtin_bswap32(candidate[7]);
-
- // Skip if hash doesn't satisfy the maximum target
- if (nHash7 > nMaxTarget32)
- continue;
-
- uint256 nHashProofOfStake;
- uint32_t *pnHashProofOfStake = (uint32_t *) &nHashProofOfStake;
-
- for (int i = 0; i < 7; i++)
- pnHashProofOfStake[i] = __builtin_bswap32(candidate[i]);
- pnHashProofOfStake[7] = nHash7;
-
- CBigNum bnCoinDayWeight = bnValueIn * GetWeight((int64_t)nInputTxTime, (int64_t)nTimeTx) / COIN / nOneDay;
- CBigNum bnTargetProofOfStake = bnCoinDayWeight * bnTargetPerCoinDay;
-
- if (bnTargetProofOfStake >= CBigNum(nHashProofOfStake))
- solutions.push_back(std::pair<uint256,uint32_t>(nHashProofOfStake, nTimeTx));
- }
-#endif
- }
-
- void Do()
- {
- if (fUse4Way)
- Do_4way();
- else
- Do_oneway();
- }
-
- vector<std::pair<uint256,uint32_t> >& GetSolutions()
- {
- return solutions;
- }
-
-private:
- std::vector<std::pair<uint256,uint32_t> > solutions;
-
- uint8_t *kernel;
- uint32_t nBits;
- uint32_t nInputTxTime;
- CBigNum bnValueIn;
- uint32_t nIntervalBegin;
- uint32_t nIntervalEnd;
-};
-
-#else
-class ScanMidstateWorker
-{
-public:
- ScanMidstateWorker()
- { }
- ScanMidstateWorker(unsigned char *kernel, uint32_t nBits, uint32_t nInputTxTime, int64_t nValueIn, uint32_t nIntervalBegin, uint32_t nIntervalEnd)
- : nBits(nBits), nInputTxTime(nInputTxTime), bnValueIn(nValueIn), nIntervalBegin(nIntervalBegin), nIntervalEnd(nIntervalEnd)
- {
- // Init new sha256 context and update it
- // with first 24 bytes of kernel
- SHA256_Init(&workerCtx);
- SHA256_Update(&workerCtx, kernel, 8 + 16);
- solutions = vector<std::pair<uint256,uint32_t> >();
- }
-
- void Do()
- {
- SetThreadPriority(THREAD_PRIORITY_LOWEST);
- SHA256_CTX ctx = workerCtx;
-
- // Sha256 result buffer
- uint32_t hashProofOfStake[8];
-
- // Compute maximum possible target to filter out majority of obviously insufficient hashes
- CBigNum bnTargetPerCoinDay;
- bnTargetPerCoinDay.SetCompact(nBits);
-
- uint256 nMaxTarget = (bnTargetPerCoinDay * bnValueIn * nStakeMaxAge / COIN / nOneDay).getuint256(),
- *pnHashProofOfStake = (uint256 *)&hashProofOfStake;
-
- // Search forward in time from the given timestamp
- // Stopping search in case of shutting down
- for (uint32_t nTimeTx=nIntervalBegin, nMaxTarget32 = nMaxTarget.Get32(7); nTimeTx<nIntervalEnd && !fShutdown; nTimeTx++)
- {
- // Complete first hashing iteration
- uint256 hash1;
- SHA256_Update(&ctx, (unsigned char*)&nTimeTx, 4);
- SHA256_Final((unsigned char*)&hash1, &ctx);
-
- // Restore context
- ctx = workerCtx;
-
- // Finally, calculate kernel hash
- SHA256((unsigned char*)&hash1, sizeof(hashProofOfStake), (unsigned char*)&hashProofOfStake);
-
- // Skip if hash doesn't satisfy the maximum target
- if (hashProofOfStake[7] > nMaxTarget32)
- continue;
-
- CBigNum bnCoinDayWeight = bnValueIn * GetWeight((int64_t)nInputTxTime, (int64_t)nTimeTx) / COIN / nOneDay;
- CBigNum bnTargetProofOfStake = bnCoinDayWeight * bnTargetPerCoinDay;
-
- if (bnTargetProofOfStake >= CBigNum(*pnHashProofOfStake))
- solutions.push_back(std::pair<uint256,uint32_t>(*pnHashProofOfStake, nTimeTx));
- }
- }
-
- vector<std::pair<uint256,uint32_t> >& GetSolutions()
- {
- return solutions;
- }
-
-private:
- SHA256_CTX workerCtx;
- std::vector<std::pair<uint256,uint32_t> > solutions;
-
- uint32_t nBits;
- uint32_t nInputTxTime;
- CBigNum bnValueIn;
- uint32_t nIntervalBegin;
- uint32_t nIntervalEnd;
-};
-
-#endif
// Scan given kernel for solution
bool ScanKernelForward(unsigned char *kernel, uint32_t nBits, uint32_t nInputTxTime, int64_t nValueIn, std::pair<uint32_t, uint32_t> &SearchInterval, std::vector<std::pair<uint256, uint32_t> > &solutions)
{
// TODO: custom threads amount
uint32_t nThreads = boost::thread::hardware_concurrency();
+ if (nThreads == 0)
+ {
+ nThreads = 1;
+ printf("Warning: hardware_concurrency() failed in %s:%d\n", __FILE__, __LINE__);
+ }
uint32_t nPart = (SearchInterval.second - SearchInterval.first) / nThreads;
-
- ScanMidstateWorker *workers = new ScanMidstateWorker[nThreads];
+ KernelWorker *workers = new KernelWorker[nThreads];
boost::thread_group group;
for(size_t i = 0; i < nThreads; i++)
{
uint32_t nBegin = SearchInterval.first + nPart * i;
uint32_t nEnd = SearchInterval.first + nPart * (i + 1);
- workers[i] = ScanMidstateWorker(kernel, nBits, nInputTxTime, nValueIn, nBegin, nEnd);
- boost::function<void()> workerFnc = boost::bind(&ScanMidstateWorker::Do, &workers[i]);
+ workers[i] = KernelWorker(kernel, nBits, nInputTxTime, nValueIn, nBegin, nEnd);
+ boost::function<void()> workerFnc = boost::bind(&KernelWorker::Do, &workers[i]);
group.create_thread(workerFnc);
}
return true;
}
-// Scan given midstate for solution
-bool ScanContextBackward(SHA256_CTX &ctx, uint32_t nBits, uint32_t nInputTxTime, int64_t nValueIn, std::pair<uint32_t, uint32_t> &SearchInterval, std::pair<uint256, uint32_t> &solution)
-{
- CBigNum bnTargetPerCoinDay;
- bnTargetPerCoinDay.SetCompact(nBits);
-
- // Get maximum possible target to filter out the majority of obviously insufficient hashes
- CBigNum bnMaxTargetPerCoinDay = bnTargetPerCoinDay * CBigNum(nValueIn) * nStakeMaxAge / COIN / nOneDay;
- uint256 maxTarget = bnMaxTargetPerCoinDay.getuint256();
-
- SHA256_CTX ctxCopy = ctx;
-
- // Search backward in time from the given timestamp
- // Stopping search in case of shutting down
- for (uint32_t nTimeTx=SearchInterval.first; nTimeTx>SearchInterval.second && !fShutdown; nTimeTx--)
- {
- // Complete first hashing iteration
- uint256 hash1;
- SHA256_Update(&ctxCopy, (unsigned char*)&nTimeTx, 4);
- SHA256_Final((unsigned char*)&hash1, &ctxCopy);
-
- // Restore context
- ctxCopy = ctx;
-
- // Finally, calculate kernel hash
- uint256 hashProofOfStake;
- SHA256((unsigned char*)&hash1, sizeof(hashProofOfStake), (unsigned char*)&hashProofOfStake);
-
- // Skip if hash doesn't satisfy the maximum target
- if (hashProofOfStake > maxTarget)
- continue;
-
- CBigNum bnCoinDayWeight = CBigNum(nValueIn) * GetWeight((int64_t)nInputTxTime, (int64_t)nTimeTx) / COIN / nOneDay;
- CBigNum bnTargetProofOfStake = bnCoinDayWeight * bnTargetPerCoinDay;
-
- if (bnTargetProofOfStake >= CBigNum(hashProofOfStake))
- {
- solution.first = hashProofOfStake;
- solution.second = nTimeTx;
-
- return true;
- }
- }
-
- return false;
-}
-
// Check kernel hash target and coinstake signature
bool CheckProofOfStake(const CTransaction& tx, unsigned int nBits, uint256& hashProofOfStake, uint256& targetProofOfStake)
{
git://git.novaco.in / novacoin.git / blobdiff