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Introduce separate 'generate' RPC call

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This commit is contained in:
Pieter Wuille
2015-03-31 20:28:28 -07:00
parent 0df67f1f7a
commit 6b04508e37
25 changed files with 162 additions and 142 deletions
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86
src/miner.cpp
View File

@@ -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
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)
// 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)
// 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)
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);
}
}
}
}

2
src/miner.h
View File

@@ -24,6 +24,8 @@ struct CBlockTemplate
/** Run the miner threads */
void GenerateBitcoins(bool fGenerate, CWallet* pwallet, int nThreads);
/** Create a single block */
bool MineBlock(CWallet *pwallet, uint256& hash);
/** Generate a new block, without valid proof-of-work */
CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn);
CBlockTemplate* CreateNewBlockWithKey(CReserveKey& reservekey);

1
src/rpcclient.cpp
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@@ -29,6 +29,7 @@ static const CRPCConvertParam vRPCConvertParams[] =
{ "getaddednodeinfo", 0 },
{ "setgenerate", 0 },
{ "setgenerate", 1 },
{ "generate", 0 },
{ "getnetworkhashps", 0 },
{ "getnetworkhashps", 1 },
{ "sendtoaddress", 1 },

91
src/rpcmining.cpp
View File

@@ -113,6 +113,45 @@ Value getgenerate(const Array& params, bool fHelp)
return GetBoolArg("-gen", false);
}
Value generate(const Array& params, bool fHelp)
{
if (fHelp || params.size() < 1 || params.size() > 1)
throw runtime_error(
"generate numblocks\n"
"\nMine blocks immediately (before the RPC call returns)\n"
"1. numblocks (numeric) How many blocks are generated immediately.\n"
"\nResult\n"
"[ blockhashes ] (array) hashes of blocks generated\n"
"\nExamples:\n"
"\nGenerate 11 blocks\n"
+ HelpExampleCli("generate", "11")
);
if (pwalletMain == NULL)
throw JSONRPCError(RPC_METHOD_NOT_FOUND, "Method not found (disabled)");
int nHeightStart = 0;
int nHeightEnd = 0;
int nHeight = 0;
int nGenerate = params[0].get_int();
{ // Don't keep cs_main locked
LOCK(cs_main);
nHeightStart = chainActive.Height();
nHeight = nHeightStart;
nHeightEnd = nHeightStart+nGenerate;
}
Array blockHashes;
while (nHeight < nHeightEnd) {
uint256 hash;
if (!MineBlock(pwalletMain, hash))
throw JSONRPCError(RPC_INTERNAL_ERROR, "Wallet keypool empty");
++nHeight;
blockHashes.push_back(hash.GetHex());
}
return blockHashes;
}
Value setgenerate(const Array& params, bool fHelp)
{
@@ -125,9 +164,6 @@ Value setgenerate(const Array& params, bool fHelp)
"\nArguments:\n"
"1. generate (boolean, required) Set to true to turn on generation, off to turn off.\n"
"2. genproclimit (numeric, optional) Set the processor limit for when generation is on. Can be -1 for unlimited.\n"
" Note: in -regtest mode, genproclimit controls how many blocks are generated immediately.\n"
"\nResult\n"
"[ blockhashes ] (array, -regtest only) hashes of blocks generated\n"
"\nExamples:\n"
"\nSet the generation on with a limit of one processor\n"
+ HelpExampleCli("setgenerate", "true 1") +
@@ -154,52 +190,9 @@ Value setgenerate(const Array& params, bool fHelp)
fGenerate = false;
}
// -regtest mode: don't return until nGenProcLimit blocks are generated
if (fGenerate && Params().MineBlocksOnDemand())
{
int nHeightStart = 0;
int nHeightEnd = 0;
int nHeight = 0;
int nGenerate = (nGenProcLimit > 0 ? nGenProcLimit : 1);
CReserveKey reservekey(pwalletMain);
{ // Don't keep cs_main locked
LOCK(cs_main);
nHeightStart = chainActive.Height();
nHeight = nHeightStart;
nHeightEnd = nHeightStart+nGenerate;
}
unsigned int nExtraNonce = 0;
Array blockHashes;
while (nHeight < nHeightEnd)
{
auto_ptr<CBlockTemplate> pblocktemplate(CreateNewBlockWithKey(reservekey));
if (!pblocktemplate.get())
throw JSONRPCError(RPC_INTERNAL_ERROR, "Wallet keypool empty");
CBlock *pblock = &pblocktemplate->block;
{
LOCK(cs_main);
IncrementExtraNonce(pblock, chainActive.Tip(), nExtraNonce);
}
while (!CheckProofOfWork(pblock->GetHash(), pblock->nBits, Params().GetConsensus())) {
// Yes, there is a chance every nonce could fail to satisfy the -regtest
// target -- 1 in 2^(2^32). That ain't gonna happen.
++pblock->nNonce;
}
CValidationState state;
if (!ProcessNewBlock(state, NULL, pblock))
throw JSONRPCError(RPC_INTERNAL_ERROR, "ProcessNewBlock, block not accepted");
++nHeight;
blockHashes.push_back(pblock->GetHash().GetHex());
}
return blockHashes;
}
else // Not -regtest: start generate thread, return immediately
{
mapArgs["-gen"] = (fGenerate ? "1" : "0");
mapArgs ["-genproclimit"] = itostr(nGenProcLimit);
GenerateBitcoins(fGenerate, pwalletMain, nGenProcLimit);
}
mapArgs["-gen"] = (fGenerate ? "1" : "0");
mapArgs ["-genproclimit"] = itostr(nGenProcLimit);
GenerateBitcoins(fGenerate, pwalletMain, nGenProcLimit);
return Value::null;
}

1
src/rpcserver.cpp
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@@ -312,6 +312,7 @@ static const CRPCCommand vRPCCommands[] =
/* Coin generation */
{ "generating", "getgenerate", &getgenerate, true, false },
{ "generating", "setgenerate", &setgenerate, true, false },
{ "generating", "generate", &generate, true, false },
#endif
/* Raw transactions */

1
src/rpcserver.h
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@@ -162,6 +162,7 @@ extern json_spirit::Value importwallet(const json_spirit::Array& params, bool fH
extern json_spirit::Value getgenerate(const json_spirit::Array& params, bool fHelp); // in rpcmining.cpp
extern json_spirit::Value setgenerate(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value generate(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value getnetworkhashps(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value getmininginfo(const json_spirit::Array& params, bool fHelp);
extern json_spirit::Value prioritisetransaction(const json_spirit::Array& params, bool fHelp);