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 license.txt or http://www.opensource.org/licenses/mit-license.php.
11 #include <sys/types.h>
13 #include <sys/resource.h>
15 typedef int pid_t; /* define for windows compatiblity */
21 #include <boost/thread.hpp>
22 #include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
23 #include <boost/date_time/gregorian/gregorian_types.hpp>
24 #include <boost/date_time/posix_time/posix_time_types.hpp>
26 #include <openssl/sha.h>
27 #include <openssl/ripemd.h>
31 typedef long long int64;
32 typedef unsigned long long uint64;
35 #define BEGIN(a) ((char*)&(a))
36 #define END(a) ((char*)&((&(a))[1]))
37 #define UBEGIN(a) ((unsigned char*)&(a))
38 #define UEND(a) ((unsigned char*)&((&(a))[1]))
39 #define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
40 #define printf OutputDebugStringF
45 #define snprintf my_snprintf
48 #if defined(_MSC_VER) || defined(__MSVCRT__)
59 // This is needed because the foreach macro can't get over the comma in pair<t1, t2>
60 #define PAIRTYPE(t1, t2) std::pair<t1, t2>
62 // Align by increasing pointer, must have extra space at end of buffer
63 template <size_t nBytes, typename T>
72 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
77 #define MSG_NOSIGNAL 0
78 #define MSG_DONTWAIT 0
84 #define unlink _unlink
86 #define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d)
87 #define strlwr(psz) to_lower(psz)
88 #define _strlwr(psz) to_lower(psz)
90 inline void Sleep(int64 n)
92 /*Boost has a year 2038 problem— if the request sleep time is past epoch+2^31 seconds the sleep returns instantly.
93 So we clamp our sleeps here to 10 years and hope that boost is fixed by 2028.*/
94 boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n>315576000000LL?315576000000LL:n));
99 inline const char* _(const char* psz)
113 extern std::map<std::string, std::string> mapArgs;
114 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
116 extern bool fPrintToConsole;
117 extern bool fPrintToDebugger;
118 extern char pszSetDataDir[MAX_PATH];
119 extern bool fRequestShutdown;
120 extern bool fShutdown;
123 extern bool fCommandLine;
124 extern std::string strMiscWarning;
125 extern bool fTestNet;
126 extern bool fNoListen;
127 extern bool fLogTimestamps;
130 void RandAddSeedPerfmon();
131 int OutputDebugStringF(const char* pszFormat, ...);
132 int my_snprintf(char* buffer, size_t limit, const char* format, ...);
134 /* It is not allowed to use va_start with a pass-by-reference argument.
135 (C++ standard, 18.7, paragraph 3). Use a dummy argument to work around this, and use a
136 macro to keep similar semantics.
138 std::string real_strprintf(const std::string &format, int dummy, ...);
139 #define strprintf(format, ...) real_strprintf(format, 0, __VA_ARGS__)
141 bool error(const char *format, ...);
142 void LogException(std::exception* pex, const char* pszThread);
143 void PrintException(std::exception* pex, const char* pszThread);
144 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
145 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
146 std::string FormatMoney(int64 n, bool fPlus=false);
147 bool ParseMoney(const std::string& str, int64& nRet);
148 bool ParseMoney(const char* pszIn, int64& nRet);
149 std::vector<unsigned char> ParseHex(const char* psz);
150 std::vector<unsigned char> ParseHex(const std::string& str);
151 bool IsHex(const std::string& str);
152 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
153 std::string DecodeBase64(const std::string& str);
154 std::string EncodeBase64(const unsigned char* pch, size_t len);
155 std::string EncodeBase64(const std::string& str);
156 void ParseParameters(int argc, const char*const argv[]);
157 bool WildcardMatch(const char* psz, const char* mask);
158 bool WildcardMatch(const std::string& str, const std::string& mask);
159 int GetFilesize(FILE* file);
160 void GetDataDir(char* pszDirRet);
161 std::string GetConfigFile();
162 std::string GetPidFile();
163 void CreatePidFile(std::string pidFile, pid_t pid);
164 bool ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
166 std::string MyGetSpecialFolderPath(int nFolder, bool fCreate);
168 std::string GetDefaultDataDir();
169 std::string GetDataDir();
170 void ShrinkDebugFile();
171 int GetRandInt(int nMax);
172 uint64 GetRand(uint64 nMax);
174 void SetMockTime(int64 nMockTimeIn);
175 int64 GetAdjustedTime();
176 std::string FormatFullVersion();
177 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
178 void AddTimeData(const CNetAddr& ip, int64 nTime);
191 /** Wrapper to automatically initialize mutex. */
192 class CCriticalSection
195 boost::interprocess::interprocess_recursive_mutex mutex;
197 explicit CCriticalSection() { }
198 ~CCriticalSection() { }
199 void Enter(const char* pszName, const char* pszFile, int nLine);
201 bool TryEnter(const char* pszName, const char* pszFile, int nLine);
204 /** RAII object that acquires mutex. Needed for exception safety. */
208 CCriticalSection* pcs;
211 CCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
214 pcs->Enter(pszName, pszFile, nLine);
217 operator bool() const
228 #define CRITICAL_BLOCK(cs) \
229 if (CCriticalBlock criticalblock = CCriticalBlock(cs, #cs, __FILE__, __LINE__))
231 #define ENTER_CRITICAL_SECTION(cs) \
232 (cs).Enter(#cs, __FILE__, __LINE__)
234 #define LEAVE_CRITICAL_SECTION(cs) \
237 /** RAII object that tries to acquire mutex. Needed for exception safety. */
238 class CTryCriticalBlock
241 CCriticalSection* pcs;
244 CTryCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
246 pcs = (csIn.TryEnter(pszName, pszFile, nLine) ? &csIn : NULL);
249 operator bool() const
261 bool Entered() const { return pcs != NULL; }
264 #define TRY_CRITICAL_BLOCK(cs) \
265 if (CTryCriticalBlock criticalblock = CTryCriticalBlock(cs, #cs, __FILE__, __LINE__))
270 inline std::string i64tostr(int64 n)
272 return strprintf("%"PRI64d, n);
275 inline std::string itostr(int n)
277 return strprintf("%d", n);
280 inline int64 atoi64(const char* psz)
285 return strtoll(psz, NULL, 10);
289 inline int64 atoi64(const std::string& str)
292 return _atoi64(str.c_str());
294 return strtoll(str.c_str(), NULL, 10);
298 inline int atoi(const std::string& str)
300 return atoi(str.c_str());
303 inline int roundint(double d)
305 return (int)(d > 0 ? d + 0.5 : d - 0.5);
308 inline int64 roundint64(double d)
310 return (int64)(d > 0 ? d + 0.5 : d - 0.5);
313 inline int64 abs64(int64 n)
315 return (n >= 0 ? n : -n);
319 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
321 if (itbegin == itend)
323 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
324 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
326 str.reserve((pend-pbegin) * (fSpaces ? 3 : 2));
327 for (const unsigned char* p = pbegin; p != pend; p++)
328 str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
332 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
334 return HexStr(vch.begin(), vch.end(), fSpaces);
338 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
340 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
343 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
345 printf(pszFormat, HexStr(vch, fSpaces).c_str());
348 inline int64 GetPerformanceCounter()
352 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
355 gettimeofday(&t, NULL);
356 nCounter = t.tv_sec * 1000000 + t.tv_usec;
361 inline int64 GetTimeMillis()
363 return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
364 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
367 inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
370 struct tm* ptmTime = gmtime(&n);
372 strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
377 void skipspaces(T& it)
383 inline bool IsSwitchChar(char c)
386 return c == '-' || c == '/';
393 * Return string argument or default value
395 * @param strArg Argument to get (e.g. "-foo")
396 * @param default (e.g. "1")
397 * @return command-line argument or default value
399 std::string GetArg(const std::string& strArg, const std::string& strDefault);
402 * Return integer argument or default value
404 * @param strArg Argument to get (e.g. "-foo")
405 * @param default (e.g. 1)
406 * @return command-line argument (0 if invalid number) or default value
408 int64 GetArg(const std::string& strArg, int64 nDefault);
411 * Return boolean argument or default value
413 * @param strArg Argument to get (e.g. "-foo")
414 * @param default (true or false)
415 * @return command-line argument or default value
417 bool GetBoolArg(const std::string& strArg, bool fDefault=false);
420 * Set an argument if it doesn't already have a value
422 * @param strArg Argument to set (e.g. "-foo")
423 * @param strValue Value (e.g. "1")
424 * @return true if argument gets set, false if it already had a value
426 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
429 * Set a boolean argument if it doesn't already have a value
431 * @param strArg Argument to set (e.g. "-foo")
432 * @param fValue Value (e.g. false)
433 * @return true if argument gets set, false if it already had a value
435 bool SoftSetBoolArg(const std::string& strArg, bool fValue);
445 // Randomize the stack to help protect against buffer overrun exploits
446 #define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
448 static char nLoops; \
450 nLoops = GetRand(20) + 1; \
459 template<typename T1>
460 inline uint256 Hash(const T1 pbegin, const T1 pend)
462 static unsigned char pblank[1];
464 SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
466 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
470 template<typename T1, typename T2>
471 inline uint256 Hash(const T1 p1begin, const T1 p1end,
472 const T2 p2begin, const T2 p2end)
474 static unsigned char pblank[1];
478 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
479 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
480 SHA256_Final((unsigned char*)&hash1, &ctx);
482 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
486 template<typename T1, typename T2, typename T3>
487 inline uint256 Hash(const T1 p1begin, const T1 p1end,
488 const T2 p2begin, const T2 p2end,
489 const T3 p3begin, const T3 p3end)
491 static unsigned char pblank[1];
495 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
496 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
497 SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
498 SHA256_Final((unsigned char*)&hash1, &ctx);
500 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
505 uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL_VERSION)
507 // Most of the time is spent allocating and deallocating CDataStream's
508 // buffer. If this ever needs to be optimized further, make a CStaticStream
509 // class with its buffer on the stack.
510 CDataStream ss(nType, nVersion);
513 return Hash(ss.begin(), ss.end());
516 inline uint160 Hash160(const std::vector<unsigned char>& vch)
519 SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
521 RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
526 /** Median filter over a stream of values.
527 * Returns the median of the last N numbers
529 template <typename T> class CMedianFilter
532 std::vector<T> vValues;
533 std::vector<T> vSorted;
536 CMedianFilter(int size, T initial_value):
539 vValues.reserve(size);
540 vValues.push_back(initial_value);
546 if(vValues.size() == nSize)
548 vValues.erase(vValues.begin());
550 vValues.push_back(value);
552 vSorted.resize(vValues.size());
553 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
554 std::sort(vSorted.begin(), vSorted.end());
559 int size = vSorted.size();
561 if(size & 1) // Odd number of elements
563 return vSorted[size/2];
565 else // Even number of elements
567 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
573 return vValues.size();
576 std::vector<T> sorted () const
591 // Note: It turns out we might have been able to use boost::thread
592 // by using TerminateThread(boost::thread.native_handle(), 0);
594 typedef HANDLE pthread_t;
596 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
601 NULL, // default security
602 0, // inherit stack size from parent
603 (LPTHREAD_START_ROUTINE)pfn, // function pointer
605 0, // creation option, start immediately
606 &nUnused); // thread identifier
609 printf("Error: CreateThread() returned %d\n", GetLastError());
614 CloseHandle(hthread);
615 return (pthread_t)-1;
620 inline void SetThreadPriority(int nPriority)
622 SetThreadPriority(GetCurrentThread(), nPriority);
625 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
627 pthread_t hthread = 0;
628 int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
631 printf("Error: pthread_create() returned %d\n", ret);
636 pthread_detach(hthread);
637 return (pthread_t)-1;
642 #define THREAD_PRIORITY_LOWEST PRIO_MAX
643 #define THREAD_PRIORITY_BELOW_NORMAL 2
644 #define THREAD_PRIORITY_NORMAL 0
645 #define THREAD_PRIORITY_ABOVE_NORMAL 0
647 inline void SetThreadPriority(int nPriority)
649 // It's unclear if it's even possible to change thread priorities on Linux,
650 // but we really and truly need it for the generation threads.
652 setpriority(PRIO_THREAD, 0, nPriority);
654 setpriority(PRIO_PROCESS, 0, nPriority);
658 inline void ExitThread(size_t nExitCode)
660 pthread_exit((void*)nExitCode);
668 inline bool AffinityBugWorkaround(void(*pfn)(void*))
671 // Sometimes after a few hours affinity gets stuck on one processor
672 DWORD_PTR dwProcessAffinityMask = -1;
673 DWORD_PTR dwSystemAffinityMask = -1;
674 GetProcessAffinityMask(GetCurrentProcess(), &dwProcessAffinityMask, &dwSystemAffinityMask);
675 DWORD dwPrev1 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
676 DWORD dwPrev2 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
677 if (dwPrev2 != dwProcessAffinityMask)
679 printf("AffinityBugWorkaround() : SetThreadAffinityMask=%d, ProcessAffinityMask=%d, restarting thread\n", dwPrev2, dwProcessAffinityMask);
680 if (!CreateThread(pfn, NULL))
681 printf("Error: CreateThread() failed\n");
688 inline uint32_t ByteReverse(uint32_t value)
690 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
691 return (value<<16) | (value>>16);