diff options
| -rw-r--r-- | src/main.cpp | 5 | ||||
| -rw-r--r-- | src/main.h | 2 | ||||
| -rw-r--r-- | src/rpcmining.cpp | 60 | ||||
| -rw-r--r-- | src/rpcserver.cpp | 11 | ||||
| -rw-r--r-- | src/rpcserver.h | 2 | ||||
| -rw-r--r-- | src/sync.h | 3 |
6 files changed, 82 insertions, 1 deletions
diff --git a/src/main.cpp b/src/main.cpp index a9c080ffae..9e97a91682 100644 --- a/src/main.cpp +++ b/src/main.cpp @@ -41,6 +41,8 @@ CCriticalSection cs_main; map<uint256, CBlockIndex*> mapBlockIndex; CChain chainActive; int64_t nTimeBestReceived = 0; +CWaitableCriticalSection csBestBlock; +CConditionVariable cvBlockChange; int nScriptCheckThreads = 0; bool fImporting = false; bool fReindex = false; @@ -1944,11 +1946,14 @@ void static UpdateTip(CBlockIndex *pindexNew) { // New best block nTimeBestReceived = GetTime(); mempool.AddTransactionsUpdated(1); + LogPrintf("UpdateTip: new best=%s height=%d log2_work=%.8g tx=%lu date=%s progress=%f\n", chainActive.Tip()->GetBlockHash().ToString(), chainActive.Height(), log(chainActive.Tip()->nChainWork.getdouble())/log(2.0), (unsigned long)chainActive.Tip()->nChainTx, DateTimeStrFormat("%Y-%m-%d %H:%M:%S", chainActive.Tip()->GetBlockTime()), Checkpoints::GuessVerificationProgress(chainActive.Tip())); + cvBlockChange.notify_all(); + // Check the version of the last 100 blocks to see if we need to upgrade: if (!fIsInitialDownload) { diff --git a/src/main.h b/src/main.h index f6bac889be..a683412571 100644 --- a/src/main.h +++ b/src/main.h @@ -87,6 +87,8 @@ extern uint64_t nLastBlockTx; extern uint64_t nLastBlockSize; extern const std::string strMessageMagic; extern int64_t nTimeBestReceived; +extern CWaitableCriticalSection csBestBlock; +extern CConditionVariable cvBlockChange; extern bool fImporting; extern bool fReindex; extern bool fBenchmark; diff --git a/src/rpcmining.cpp b/src/rpcmining.cpp index c7621dc137..6f72ea7404 100644 --- a/src/rpcmining.cpp +++ b/src/rpcmining.cpp @@ -324,6 +324,7 @@ Value getblocktemplate(const Array& params, bool fHelp) ); std::string strMode = "template"; + Value lpval = Value::null; if (params.size() > 0) { const Object& oparam = params[0].get_obj(); @@ -336,6 +337,7 @@ Value getblocktemplate(const Array& params, bool fHelp) } else throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid mode"); + lpval = find_value(oparam, "longpollid"); } if (strMode != "template") @@ -347,8 +349,63 @@ Value getblocktemplate(const Array& params, bool fHelp) if (IsInitialBlockDownload()) throw JSONRPCError(RPC_CLIENT_IN_INITIAL_DOWNLOAD, "Bitcoin is downloading blocks..."); - // Update block static unsigned int nTransactionsUpdatedLast; + + if (lpval.type() != null_type) + { + // Wait to respond until either the best block changes, OR a minute has passed and there are more transactions + uint256 hashWatchedChain; + boost::system_time checktxtime; + unsigned int nTransactionsUpdatedLastLP; + + if (lpval.type() == str_type) + { + // Format: <hashBestChain><nTransactionsUpdatedLast> + std::string lpstr = lpval.get_str(); + + hashWatchedChain.SetHex(lpstr.substr(0, 64)); + nTransactionsUpdatedLastLP = atoi64(lpstr.substr(64)); + } + else + { + // NOTE: Spec does not specify behaviour for non-string longpollid, but this makes testing easier + hashWatchedChain = chainActive.Tip()->GetBlockHash(); + nTransactionsUpdatedLastLP = nTransactionsUpdatedLast; + } + + // Release the wallet and main lock while waiting +#ifdef ENABLE_WALLET + if(pwalletMain) + LEAVE_CRITICAL_SECTION(pwalletMain->cs_wallet); +#endif + LEAVE_CRITICAL_SECTION(cs_main); + { + checktxtime = boost::get_system_time() + boost::posix_time::minutes(1); + + boost::unique_lock<boost::mutex> lock(csBestBlock); + while (chainActive.Tip()->GetBlockHash() == hashWatchedChain && IsRPCRunning()) + { + if (!cvBlockChange.timed_wait(lock, checktxtime)) + { + // Timeout: Check transactions for update + if (mempool.GetTransactionsUpdated() != nTransactionsUpdatedLastLP) + break; + checktxtime += boost::posix_time::seconds(10); + } + } + } + ENTER_CRITICAL_SECTION(cs_main); +#ifdef ENABLE_WALLET + if(pwalletMain) + ENTER_CRITICAL_SECTION(pwalletMain->cs_wallet); +#endif + + if (!IsRPCRunning()) + throw JSONRPCError(RPC_CLIENT_NOT_CONNECTED, "Shutting down"); + // TODO: Maybe recheck connections/IBD and (if something wrong) send an expires-immediately template to stop miners? + } + + // Update block static CBlockIndex* pindexPrev; static int64_t nStart; static CBlockTemplate* pblocktemplate; @@ -436,6 +493,7 @@ Value getblocktemplate(const Array& params, bool fHelp) result.push_back(Pair("transactions", transactions)); result.push_back(Pair("coinbaseaux", aux)); result.push_back(Pair("coinbasevalue", (int64_t)pblock->vtx[0].vout[0].nValue)); + result.push_back(Pair("longpollid", chainActive.Tip()->GetBlockHash().GetHex() + i64tostr(nTransactionsUpdatedLast))); result.push_back(Pair("target", hashTarget.GetHex())); result.push_back(Pair("mintime", (int64_t)pindexPrev->GetMedianTimePast()+1)); result.push_back(Pair("mutable", aMutable)); diff --git a/src/rpcserver.cpp b/src/rpcserver.cpp index 18fa075101..bb8e56c785 100644 --- a/src/rpcserver.cpp +++ b/src/rpcserver.cpp @@ -32,6 +32,7 @@ using namespace std; static std::string strRPCUserColonPass; +static bool fRPCRunning = false; // These are created by StartRPCThreads, destroyed in StopRPCThreads static asio::io_service* rpc_io_service = NULL; static map<string, boost::shared_ptr<deadline_timer> > deadlineTimers; @@ -659,6 +660,7 @@ void StartRPCThreads() rpc_worker_group = new boost::thread_group(); for (int i = 0; i < GetArg("-rpcthreads", 4); i++) rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service)); + fRPCRunning = true; } void StartDummyRPCThread() @@ -671,12 +673,15 @@ void StartDummyRPCThread() rpc_dummy_work = new asio::io_service::work(*rpc_io_service); rpc_worker_group = new boost::thread_group(); rpc_worker_group->create_thread(boost::bind(&asio::io_service::run, rpc_io_service)); + fRPCRunning = true; } } void StopRPCThreads() { if (rpc_io_service == NULL) return; + // Set this to false first, so that longpolling loops will exit when woken up + fRPCRunning = false; // First, cancel all timers and acceptors // This is not done automatically by ->stop(), and in some cases the destructor of @@ -698,6 +703,7 @@ void StopRPCThreads() deadlineTimers.clear(); rpc_io_service->stop(); + cvBlockChange.notify_all(); if (rpc_worker_group != NULL) rpc_worker_group->join_all(); delete rpc_dummy_work; rpc_dummy_work = NULL; @@ -706,6 +712,11 @@ void StopRPCThreads() delete rpc_io_service; rpc_io_service = NULL; } +bool IsRPCRunning() +{ + return fRPCRunning; +} + void RPCRunHandler(const boost::system::error_code& err, boost::function<void(void)> func) { if (!err) diff --git a/src/rpcserver.h b/src/rpcserver.h index e32eb975a1..31badadd6d 100644 --- a/src/rpcserver.h +++ b/src/rpcserver.h @@ -40,6 +40,8 @@ void StartRPCThreads(); void StartDummyRPCThread(); /* Stop RPC threads */ void StopRPCThreads(); +/* Query whether RPC is running */ +bool IsRPCRunning(); /* Type-check arguments; throws JSONRPCError if wrong type given. Does not check that diff --git a/src/sync.h b/src/sync.h index 077ed59b89..cd319e0171 100644 --- a/src/sync.h +++ b/src/sync.h @@ -84,6 +84,9 @@ typedef AnnotatedMixin<boost::recursive_mutex> CCriticalSection; /** Wrapped boost mutex: supports waiting but not recursive locking */ typedef AnnotatedMixin<boost::mutex> CWaitableCriticalSection; +/** Just a typedef for boost::condition_variable, can be wrapped later if desired */ +typedef boost::condition_variable CConditionVariable; + #ifdef DEBUG_LOCKORDER void EnterCritical(const char* pszName, const char* pszFile, int nLine, void* cs, bool fTry = false); void LeaveCritical(); |