1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2009-2012 The Bitcoin developers
3 // Distributed under the MIT/X11 software license, see the accompanying
4 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
8 // Work around clang compilation problem in Boost 1.46:
9 // /usr/include/boost/program_options/detail/config_file.hpp:163:17: error: call to function 'to_internal' that is neither visible in the template definition nor found by argument-dependent lookup
10 // See also: http://stackoverflow.com/questions/10020179/compilation-fail-in-boost-librairies-program-options
11 // http://clang.debian.net/status.php?version=3.0&key=CANNOT_FIND_FUNCTION
13 namespace program_options {
14 std::string to_internal(const std::string&);
18 #include <boost/program_options/detail/config_file.hpp>
19 #include <boost/program_options/parsers.hpp>
20 #include <boost/filesystem.hpp>
21 #include <boost/filesystem/fstream.hpp>
22 #include <boost/interprocess/sync/interprocess_mutex.hpp>
23 #include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
24 #include <boost/foreach.hpp>
27 using namespace boost;
29 map<string, string> mapArgs;
30 map<string, vector<string> > mapMultiArgs;
32 bool fPrintToConsole = false;
33 bool fPrintToDebugger = false;
34 char pszSetDataDir[MAX_PATH] = "";
35 bool fRequestShutdown = false;
36 bool fShutdown = false;
39 bool fCommandLine = false;
40 string strMiscWarning;
41 bool fTestNet = false;
42 bool fNoListen = false;
43 bool fLogTimestamps = false;
48 // Workaround for "multiple definition of `_tls_used'"
49 // http://svn.boost.org/trac/boost/ticket/4258
50 extern "C" void tss_cleanup_implemented() { }
56 // Init openssl library multithreading support
57 static boost::interprocess::interprocess_mutex** ppmutexOpenSSL;
58 void locking_callback(int mode, int i, const char* file, int line)
60 if (mode & CRYPTO_LOCK)
61 ppmutexOpenSSL[i]->lock();
63 ppmutexOpenSSL[i]->unlock();
72 // Init openssl library multithreading support
73 ppmutexOpenSSL = (boost::interprocess::interprocess_mutex**)OPENSSL_malloc(CRYPTO_num_locks() * sizeof(boost::interprocess::interprocess_mutex*));
74 for (int i = 0; i < CRYPTO_num_locks(); i++)
75 ppmutexOpenSSL[i] = new boost::interprocess::interprocess_mutex();
76 CRYPTO_set_locking_callback(locking_callback);
79 // Seed random number generator with screen scrape and other hardware sources
83 // Seed random number generator with performance counter
88 // Shutdown openssl library multithreading support
89 CRYPTO_set_locking_callback(NULL);
90 for (int i = 0; i < CRYPTO_num_locks(); i++)
91 delete ppmutexOpenSSL[i];
92 OPENSSL_free(ppmutexOpenSSL);
106 // Seed with CPU performance counter
107 int64 nCounter = GetPerformanceCounter();
108 RAND_add(&nCounter, sizeof(nCounter), 1.5);
109 memset(&nCounter, 0, sizeof(nCounter));
112 void RandAddSeedPerfmon()
116 // This can take up to 2 seconds, so only do it every 10 minutes
117 static int64 nLastPerfmon;
118 if (GetTime() < nLastPerfmon + 10 * 60)
120 nLastPerfmon = GetTime();
123 // Don't need this on Linux, OpenSSL automatically uses /dev/urandom
124 // Seed with the entire set of perfmon data
125 unsigned char pdata[250000];
126 memset(pdata, 0, sizeof(pdata));
127 unsigned long nSize = sizeof(pdata);
128 long ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, pdata, &nSize);
129 RegCloseKey(HKEY_PERFORMANCE_DATA);
130 if (ret == ERROR_SUCCESS)
132 RAND_add(pdata, nSize, nSize/100.0);
133 memset(pdata, 0, nSize);
134 printf("%s RandAddSeed() %d bytes\n", DateTimeStrFormat("%x %H:%M", GetTime()).c_str(), nSize);
139 uint64 GetRand(uint64 nMax)
144 // The range of the random source must be a multiple of the modulus
145 // to give every possible output value an equal possibility
146 uint64 nRange = (UINT64_MAX / nMax) * nMax;
149 RAND_bytes((unsigned char*)&nRand, sizeof(nRand));
150 while (nRand >= nRange);
151 return (nRand % nMax);
154 int GetRandInt(int nMax)
156 return GetRand(nMax);
169 inline int OutputDebugStringF(const char* pszFormat, ...)
176 va_start(arg_ptr, pszFormat);
177 ret = vprintf(pszFormat, arg_ptr);
182 // print to debug.log
183 static FILE* fileout = NULL;
187 char pszFile[MAX_PATH+100];
189 strlcat(pszFile, "/debug.log", sizeof(pszFile));
190 fileout = fopen(pszFile, "a");
191 if (fileout) setbuf(fileout, NULL); // unbuffered
195 static bool fStartedNewLine = true;
197 // Debug print useful for profiling
198 if (fLogTimestamps && fStartedNewLine)
199 fprintf(fileout, "%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
200 if (pszFormat[strlen(pszFormat) - 1] == '\n')
201 fStartedNewLine = true;
203 fStartedNewLine = false;
206 va_start(arg_ptr, pszFormat);
207 ret = vfprintf(fileout, pszFormat, arg_ptr);
213 if (fPrintToDebugger)
215 static CCriticalSection cs_OutputDebugStringF;
217 // accumulate a line at a time
218 CRITICAL_BLOCK(cs_OutputDebugStringF)
220 static char pszBuffer[50000];
225 va_start(arg_ptr, pszFormat);
226 int limit = END(pszBuffer) - pend - 2;
227 int ret = _vsnprintf(pend, limit, pszFormat, arg_ptr);
229 if (ret < 0 || ret >= limit)
231 pend = END(pszBuffer) - 2;
237 char* p1 = pszBuffer;
239 while ((p2 = strchr(p1, '\n')))
244 OutputDebugStringA(p1);
249 memmove(pszBuffer, p1, pend - p1 + 1);
250 pend -= (p1 - pszBuffer);
259 // - prints up to limit-1 characters
260 // - output string is always null terminated even if limit reached
261 // - return value is the number of characters actually printed
262 int my_snprintf(char* buffer, size_t limit, const char* format, ...)
267 va_start(arg_ptr, format);
268 int ret = _vsnprintf(buffer, limit, format, arg_ptr);
270 if (ret < 0 || ret >= limit)
278 string strprintf(const std::string &format, ...)
282 int limit = sizeof(buffer);
287 va_start(arg_ptr, format);
288 ret = _vsnprintf(p, limit, format.c_str(), arg_ptr);
290 if (ret >= 0 && ret < limit)
297 throw std::bad_alloc();
299 string str(p, p+ret);
305 bool error(const std::string &format, ...)
308 int limit = sizeof(buffer);
310 va_start(arg_ptr, format);
311 int ret = _vsnprintf(buffer, limit, format.c_str(), arg_ptr);
313 if (ret < 0 || ret >= limit)
318 printf("ERROR: %s\n", buffer);
323 void ParseString(const string& str, char c, vector<string>& v)
327 string::size_type i1 = 0;
328 string::size_type i2;
331 i2 = str.find(c, i1);
334 v.push_back(str.substr(i1));
337 v.push_back(str.substr(i1, i2-i1));
343 string FormatMoney(int64 n, bool fPlus)
345 // Note: not using straight sprintf here because we do NOT want
346 // localized number formatting.
347 int64 n_abs = (n > 0 ? n : -n);
348 int64 quotient = n_abs/COIN;
349 int64 remainder = n_abs%COIN;
350 string str = strprintf("%"PRI64d".%08"PRI64d, quotient, remainder);
352 // Right-trim excess 0's before the decimal point:
354 for (int i = str.size()-1; (str[i] == '0' && isdigit(str[i-2])); --i)
357 str.erase(str.size()-nTrim, nTrim);
360 str.insert((unsigned int)0, 1, '-');
361 else if (fPlus && n > 0)
362 str.insert((unsigned int)0, 1, '+');
367 bool ParseMoney(const string& str, int64& nRet)
369 return ParseMoney(str.c_str(), nRet);
372 bool ParseMoney(const char* pszIn, int64& nRet)
376 const char* p = pszIn;
384 int64 nMult = CENT*10;
385 while (isdigit(*p) && (nMult > 0))
387 nUnits += nMult * (*p++ - '0');
396 strWhole.insert(strWhole.end(), *p);
401 if (strWhole.size() > 10) // guard against 63 bit overflow
403 if (nUnits < 0 || nUnits > COIN)
405 int64 nWhole = atoi64(strWhole);
406 int64 nValue = nWhole*COIN + nUnits;
413 vector<unsigned char> ParseHex(const char* psz)
415 static signed char phexdigit[256] =
416 { -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
417 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
418 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
419 0,1,2,3,4,5,6,7,8,9,-1,-1,-1,-1,-1,-1,
420 -1,0xa,0xb,0xc,0xd,0xe,0xf,-1,-1,-1,-1,-1,-1,-1,-1,-1,
421 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
422 -1,0xa,0xb,0xc,0xd,0xe,0xf,-1,-1,-1,-1,-1,-1,-1,-1,-1,
423 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
424 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
425 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
426 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
427 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
428 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
429 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
430 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
431 -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, };
433 // convert hex dump to vector
434 vector<unsigned char> vch;
437 while (isspace(*psz))
439 signed char c = phexdigit[(unsigned char)*psz++];
440 if (c == (signed char)-1)
442 unsigned char n = (c << 4);
443 c = phexdigit[(unsigned char)*psz++];
444 if (c == (signed char)-1)
452 vector<unsigned char> ParseHex(const string& str)
454 return ParseHex(str.c_str());
457 void ParseParameters(int argc, char* argv[])
460 mapMultiArgs.clear();
461 for (int i = 1; i < argc; i++)
464 strlcpy(psz, argv[i], sizeof(psz));
465 char* pszValue = (char*)"";
466 if (strchr(psz, '='))
468 pszValue = strchr(psz, '=');
478 mapArgs[psz] = pszValue;
479 mapMultiArgs[psz].push_back(pszValue);
483 bool SoftSetArg(const std::string& strArg, const std::string& strValue)
485 if (mapArgs.count(strArg))
487 mapArgs[strArg] = strValue;
491 bool SoftSetArg(const std::string& strArg, bool fValue)
494 return SoftSetArg(strArg, std::string("1"));
496 return SoftSetArg(strArg, std::string("0"));
500 string EncodeBase64(const unsigned char* pch, size_t len)
502 static const char *pbase64 = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
505 strRet.reserve((len+2)/3*4);
508 const unsigned char *pchEnd = pch+len;
515 case 0: // we have no bits
516 strRet += pbase64[enc >> 2];
517 left = (enc & 3) << 4;
521 case 1: // we have two bits
522 strRet += pbase64[left | (enc >> 4)];
523 left = (enc & 15) << 2;
527 case 2: // we have four bits
528 strRet += pbase64[left | (enc >> 6)];
529 strRet += pbase64[enc & 63];
537 strRet += pbase64[left];
546 string EncodeBase64(const string& str)
548 return EncodeBase64((const unsigned char*)str.c_str(), str.size());
551 vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid)
553 static const int decode64_table[256] =
555 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
556 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
557 -1, -1, -1, 62, -1, -1, -1, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1,
558 -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
559 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, -1, 26, 27, 28,
560 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48,
561 49, 50, 51, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
562 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
563 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
564 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
565 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
566 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
567 -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1
573 vector<unsigned char> vchRet;
574 vchRet.reserve(strlen(p)*3/4);
581 int dec = decode64_table[(unsigned char)*p];
582 if (dec == -1) break;
586 case 0: // we have no bits and get 6
591 case 1: // we have 6 bits and keep 4
592 vchRet.push_back((left<<2) | (dec>>4));
597 case 2: // we have 4 bits and get 6, we keep 2
598 vchRet.push_back((left<<4) | (dec>>2));
603 case 3: // we have 2 bits and get 6
604 vchRet.push_back((left<<6) | dec);
613 case 0: // 4n base64 characters processed: ok
616 case 1: // 4n+1 base64 character processed: impossible
620 case 2: // 4n+2 base64 characters processed: require '=='
621 if (left || p[0] != '=' || p[1] != '=' || decode64_table[(unsigned char)p[2]] != -1)
625 case 3: // 4n+3 base64 characters processed: require '='
626 if (left || p[0] != '=' || decode64_table[(unsigned char)p[1]] != -1)
634 string DecodeBase64(const string& str)
636 vector<unsigned char> vchRet = DecodeBase64(str.c_str());
637 return string((const char*)&vchRet[0], vchRet.size());
641 bool WildcardMatch(const char* psz, const char* mask)
648 return (*psz == '\0');
650 return WildcardMatch(psz, mask+1) || (*psz && WildcardMatch(psz+1, mask));
665 bool WildcardMatch(const string& str, const string& mask)
667 return WildcardMatch(str.c_str(), mask.c_str());
677 void FormatException(char* pszMessage, std::exception* pex, const char* pszThread)
680 char pszModule[MAX_PATH];
682 GetModuleFileNameA(NULL, pszModule, sizeof(pszModule));
684 const char* pszModule = "bitcoin";
687 snprintf(pszMessage, 1000,
688 "EXCEPTION: %s \n%s \n%s in %s \n", typeid(*pex).name(), pex->what(), pszModule, pszThread);
690 snprintf(pszMessage, 1000,
691 "UNKNOWN EXCEPTION \n%s in %s \n", pszModule, pszThread);
694 void LogException(std::exception* pex, const char* pszThread)
696 char pszMessage[10000];
697 FormatException(pszMessage, pex, pszThread);
698 printf("\n%s", pszMessage);
701 void PrintException(std::exception* pex, const char* pszThread)
703 char pszMessage[10000];
704 FormatException(pszMessage, pex, pszThread);
705 printf("\n\n************************\n%s\n", pszMessage);
706 fprintf(stderr, "\n\n************************\n%s\n", pszMessage);
707 strMiscWarning = pszMessage;
711 void ThreadOneMessageBox(string strMessage)
713 // Skip message boxes if one is already open
714 static bool fMessageBoxOpen;
717 fMessageBoxOpen = true;
718 ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION);
719 fMessageBoxOpen = false;
722 void PrintExceptionContinue(std::exception* pex, const char* pszThread)
724 char pszMessage[10000];
725 FormatException(pszMessage, pex, pszThread);
726 printf("\n\n************************\n%s\n", pszMessage);
727 fprintf(stderr, "\n\n************************\n%s\n", pszMessage);
728 strMiscWarning = pszMessage;
739 typedef WINSHELLAPI BOOL (WINAPI *PSHGETSPECIALFOLDERPATHA)(HWND hwndOwner, LPSTR lpszPath, int nFolder, BOOL fCreate);
741 string MyGetSpecialFolderPath(int nFolder, bool fCreate)
743 char pszPath[MAX_PATH+100] = "";
745 // SHGetSpecialFolderPath isn't always available on old Windows versions
746 HMODULE hShell32 = LoadLibraryA("shell32.dll");
749 PSHGETSPECIALFOLDERPATHA pSHGetSpecialFolderPath =
750 (PSHGETSPECIALFOLDERPATHA)GetProcAddress(hShell32, "SHGetSpecialFolderPathA");
751 bool fSuccess = false;
752 if (pSHGetSpecialFolderPath)
754 (*pSHGetSpecialFolderPath)(NULL, pszPath, nFolder, fCreate);
755 FreeModule(hShell32);
764 if (nFolder == CSIDL_STARTUP)
766 pszEnv = getenv("USERPROFILE");
769 strPath += "\\Start Menu\\Programs\\Startup";
771 else if (nFolder == CSIDL_APPDATA)
773 pszEnv = getenv("APPDATA");
783 string GetDefaultDataDir()
785 // Windows: C:\Documents and Settings\username\Application Data\Bitcoin
786 // Mac: ~/Library/Application Support/Bitcoin
790 return MyGetSpecialFolderPath(CSIDL_APPDATA, true) + "\\Bitcoin";
792 char* pszHome = getenv("HOME");
793 if (pszHome == NULL || strlen(pszHome) == 0)
794 pszHome = (char*)"/";
795 string strHome = pszHome;
796 if (strHome[strHome.size()-1] != '/')
800 strHome += "Library/Application Support/";
801 filesystem::create_directory(strHome.c_str());
802 return strHome + "Bitcoin";
805 return strHome + ".bitcoin";
810 void GetDataDir(char* pszDir)
812 // pszDir must be at least MAX_PATH length.
814 if (pszSetDataDir[0] != 0)
816 strlcpy(pszDir, pszSetDataDir, MAX_PATH);
821 // This can be called during exceptions by printf, so we cache the
822 // value so we don't have to do memory allocations after that.
823 static char pszCachedDir[MAX_PATH];
824 if (pszCachedDir[0] == 0)
825 strlcpy(pszCachedDir, GetDefaultDataDir().c_str(), sizeof(pszCachedDir));
826 strlcpy(pszDir, pszCachedDir, MAX_PATH);
831 char* p = pszDir + strlen(pszDir);
832 if (p > pszDir && p[-1] != '/' && p[-1] != '\\')
834 strcpy(p, "testnet");
837 static bool pfMkdir[4];
838 if (!pfMkdir[nVariation])
840 pfMkdir[nVariation] = true;
841 boost::filesystem::create_directory(pszDir);
847 char pszDir[MAX_PATH];
852 string GetConfigFile()
854 namespace fs = boost::filesystem;
855 fs::path pathConfig(GetArg("-conf", "bitcoin.conf"));
856 if (!pathConfig.is_complete())
857 pathConfig = fs::path(GetDataDir()) / pathConfig;
858 return pathConfig.string();
861 void ReadConfigFile(map<string, string>& mapSettingsRet,
862 map<string, vector<string> >& mapMultiSettingsRet)
864 namespace fs = boost::filesystem;
865 namespace pod = boost::program_options::detail;
867 fs::ifstream streamConfig(GetConfigFile());
868 if (!streamConfig.good())
871 set<string> setOptions;
872 setOptions.insert("*");
874 for (pod::config_file_iterator it(streamConfig, setOptions), end; it != end; ++it)
876 // Don't overwrite existing settings so command line settings override bitcoin.conf
877 string strKey = string("-") + it->string_key;
878 if (mapSettingsRet.count(strKey) == 0)
879 mapSettingsRet[strKey] = it->value[0];
880 mapMultiSettingsRet[strKey].push_back(it->value[0]);
886 namespace fs = boost::filesystem;
887 fs::path pathConfig(GetArg("-pid", "bitcoind.pid"));
888 if (!pathConfig.is_complete())
889 pathConfig = fs::path(GetDataDir()) / pathConfig;
890 return pathConfig.string();
893 void CreatePidFile(string pidFile, pid_t pid)
895 FILE* file = fopen(pidFile.c_str(), "w");
898 fprintf(file, "%d\n", pid);
903 int GetFilesize(FILE* file)
905 int nSavePos = ftell(file);
907 if (fseek(file, 0, SEEK_END) == 0)
908 nFilesize = ftell(file);
909 fseek(file, nSavePos, SEEK_SET);
913 void ShrinkDebugFile()
915 // Scroll debug.log if it's getting too big
916 string strFile = GetDataDir() + "/debug.log";
917 FILE* file = fopen(strFile.c_str(), "r");
918 if (file && GetFilesize(file) > 10 * 1000000)
920 // Restart the file with some of the end
922 fseek(file, -sizeof(pch), SEEK_END);
923 int nBytes = fread(pch, 1, sizeof(pch), file);
926 file = fopen(strFile.c_str(), "w");
929 fwrite(pch, 1, nBytes, file);
943 // "Never go to sea with two chronometers; take one or three."
944 // Our three time sources are:
946 // - Median of other nodes's clocks
947 // - The user (asking the user to fix the system clock if the first two disagree)
949 static int64 nMockTime = 0; // For unit testing
953 if (nMockTime) return nMockTime;
958 void SetMockTime(int64 nMockTimeIn)
960 nMockTime = nMockTimeIn;
963 static int64 nTimeOffset = 0;
965 int64 GetAdjustedTime()
967 return GetTime() + nTimeOffset;
970 void AddTimeData(unsigned int ip, int64 nTime)
972 int64 nOffsetSample = nTime - GetTime();
975 static set<unsigned int> setKnown;
976 if (!setKnown.insert(ip).second)
980 static vector<int64> vTimeOffsets;
981 if (vTimeOffsets.empty())
982 vTimeOffsets.push_back(0);
983 vTimeOffsets.push_back(nOffsetSample);
984 printf("Added time data, samples %d, offset %+"PRI64d" (%+"PRI64d" minutes)\n", vTimeOffsets.size(), vTimeOffsets.back(), vTimeOffsets.back()/60);
985 if (vTimeOffsets.size() >= 5 && vTimeOffsets.size() % 2 == 1)
987 sort(vTimeOffsets.begin(), vTimeOffsets.end());
988 int64 nMedian = vTimeOffsets[vTimeOffsets.size()/2];
989 // Only let other nodes change our time by so much
990 if (abs64(nMedian) < 70 * 60)
992 nTimeOffset = nMedian;
1001 // If nobody has a time different than ours but within 5 minutes of ours, give a warning
1002 bool fMatch = false;
1003 BOOST_FOREACH(int64 nOffset, vTimeOffsets)
1004 if (nOffset != 0 && abs64(nOffset) < 5 * 60)
1010 string strMessage = _("Warning: Please check that your computer's date and time are correct. If your clock is wrong Bitcoin will not work properly.");
1011 strMiscWarning = strMessage;
1012 printf("*** %s\n", strMessage.c_str());
1013 boost::thread(boost::bind(ThreadSafeMessageBox, strMessage+" ", string("Bitcoin"), wxOK | wxICON_EXCLAMATION, (wxWindow*)NULL, -1, -1));
1017 BOOST_FOREACH(int64 n, vTimeOffsets)
1018 printf("%+"PRI64d" ", n);
1019 printf("| nTimeOffset = %+"PRI64d" (%+"PRI64d" minutes)\n", nTimeOffset, nTimeOffset/60);
1031 string FormatVersion(int nVersion)
1033 if (nVersion%100 == 0)
1034 return strprintf("%d.%d.%d", nVersion/1000000, (nVersion/10000)%100, (nVersion/100)%100);
1036 return strprintf("%d.%d.%d.%d", nVersion/1000000, (nVersion/10000)%100, (nVersion/100)%100, nVersion%100);
1039 string FormatFullVersion()
1041 string s = FormatVersion(VERSION) + pszSubVer;
1042 if (VERSION_IS_BETA) {
1052 #ifdef DEBUG_LOCKORDER
1054 // Early deadlock detection.
1055 // Problem being solved:
1056 // Thread 1 locks A, then B, then C
1057 // Thread 2 locks D, then C, then A
1058 // --> may result in deadlock between the two threads, depending on when they run.
1059 // Solution implemented here:
1060 // Keep track of pairs of locks: (A before B), (A before C), etc.
1061 // Complain if any thread trys to lock in a different order.
1064 struct CLockLocation
1066 CLockLocation(const char* pszName, const char* pszFile, int nLine)
1068 mutexName = pszName;
1069 sourceFile = pszFile;
1073 std::string ToString() const
1075 return mutexName+" "+sourceFile+":"+itostr(sourceLine);
1079 std::string mutexName;
1080 std::string sourceFile;
1084 typedef std::vector< std::pair<CCriticalSection*, CLockLocation> > LockStack;
1086 static boost::interprocess::interprocess_mutex dd_mutex;
1087 static std::map<std::pair<CCriticalSection*, CCriticalSection*>, LockStack> lockorders;
1088 static boost::thread_specific_ptr<LockStack> lockstack;
1091 static void potential_deadlock_detected(const std::pair<CCriticalSection*, CCriticalSection*>& mismatch, const LockStack& s1, const LockStack& s2)
1093 printf("POTENTIAL DEADLOCK DETECTED\n");
1094 printf("Previous lock order was:\n");
1095 BOOST_FOREACH(const PAIRTYPE(CCriticalSection*, CLockLocation)& i, s2)
1097 if (i.first == mismatch.first) printf(" (1)");
1098 if (i.first == mismatch.second) printf(" (2)");
1099 printf(" %s\n", i.second.ToString().c_str());
1101 printf("Current lock order is:\n");
1102 BOOST_FOREACH(const PAIRTYPE(CCriticalSection*, CLockLocation)& i, s1)
1104 if (i.first == mismatch.first) printf(" (1)");
1105 if (i.first == mismatch.second) printf(" (2)");
1106 printf(" %s\n", i.second.ToString().c_str());
1110 static void push_lock(CCriticalSection* c, const CLockLocation& locklocation)
1112 bool fOrderOK = true;
1113 if (lockstack.get() == NULL)
1114 lockstack.reset(new LockStack);
1116 if (fDebug) printf("Locking: %s\n", locklocation.ToString().c_str());
1119 (*lockstack).push_back(std::make_pair(c, locklocation));
1121 BOOST_FOREACH(const PAIRTYPE(CCriticalSection*, CLockLocation)& i, (*lockstack))
1123 if (i.first == c) break;
1125 std::pair<CCriticalSection*, CCriticalSection*> p1 = std::make_pair(i.first, c);
1126 if (lockorders.count(p1))
1128 lockorders[p1] = (*lockstack);
1130 std::pair<CCriticalSection*, CCriticalSection*> p2 = std::make_pair(c, i.first);
1131 if (lockorders.count(p2))
1133 potential_deadlock_detected(p1, lockorders[p2], lockorders[p1]);
1140 static void pop_lock()
1144 const CLockLocation& locklocation = (*lockstack).rbegin()->second;
1145 printf("Unlocked: %s\n", locklocation.ToString().c_str());
1148 (*lockstack).pop_back();
1152 void CCriticalSection::Enter(const char* pszName, const char* pszFile, int nLine)
1154 push_lock(this, CLockLocation(pszName, pszFile, nLine));
1157 void CCriticalSection::Leave()
1162 bool CCriticalSection::TryEnter(const char* pszName, const char* pszFile, int nLine)
1164 push_lock(this, CLockLocation(pszName, pszFile, nLine));
1165 bool result = mutex.try_lock();
1166 if (!result) pop_lock();
1172 void CCriticalSection::Enter(const char*, const char*, int)
1177 void CCriticalSection::Leave()
1182 bool CCriticalSection::TryEnter(const char*, const char*, int)
1184 bool result = mutex.try_lock();
1188 #endif /* DEBUG_LOCKORDER */