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>
19 #include <boost/thread.hpp>
20 #include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
21 #include <boost/date_time/gregorian/gregorian_types.hpp>
22 #include <boost/date_time/posix_time/posix_time_types.hpp>
24 #include <openssl/sha.h>
25 #include <openssl/ripemd.h>
29 typedef long long int64;
30 typedef unsigned long long uint64;
33 #define BEGIN(a) ((char*)&(a))
34 #define END(a) ((char*)&((&(a))[1]))
35 #define UBEGIN(a) ((unsigned char*)&(a))
36 #define UEND(a) ((unsigned char*)&((&(a))[1]))
37 #define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
38 #define printf OutputDebugStringF
43 #define snprintf my_snprintf
46 #if defined(_MSC_VER) || defined(__MSVCRT__)
57 // This is needed because the foreach macro can't get over the comma in pair<t1, t2>
58 #define PAIRTYPE(t1, t2) std::pair<t1, t2>
60 // Align by increasing pointer, must have extra space at end of buffer
61 template <size_t nBytes, typename T>
70 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
75 #define MSG_NOSIGNAL 0
76 #define MSG_DONTWAIT 0
82 #define unlink _unlink
84 #define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d)
85 #define strlwr(psz) to_lower(psz)
86 #define _strlwr(psz) to_lower(psz)
88 #define Beep(n1,n2) (0)
89 inline void Sleep(int64 n)
91 /*Boost has a year 2038 problem— if the request sleep time is past epoch+2^31 seconds the sleep returns instantly.
92 So we clamp our sleeps here to 10 years and hope that boost is fixed by 2028.*/
93 boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n>315576000000LL?315576000000LL:n));
98 inline const char* _(const char* psz)
112 extern std::map<std::string, std::string> mapArgs;
113 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
115 extern bool fPrintToConsole;
116 extern bool fPrintToDebugger;
117 extern char pszSetDataDir[MAX_PATH];
118 extern bool fRequestShutdown;
119 extern bool fShutdown;
122 extern bool fCommandLine;
123 extern std::string strMiscWarning;
124 extern bool fTestNet;
125 extern bool fNoListen;
126 extern bool fLogTimestamps;
129 void RandAddSeedPerfmon();
130 int OutputDebugStringF(const char* pszFormat, ...);
131 int my_snprintf(char* buffer, size_t limit, const char* format, ...);
132 std::string strprintf(const std::string &format, ...);
133 bool error(const std::string &format, ...);
134 void LogException(std::exception* pex, const char* pszThread);
135 void PrintException(std::exception* pex, const char* pszThread);
136 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
137 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
138 std::string FormatMoney(int64 n, bool fPlus=false);
139 bool ParseMoney(const std::string& str, int64& nRet);
140 bool ParseMoney(const char* pszIn, int64& nRet);
141 std::vector<unsigned char> ParseHex(const char* psz);
142 std::vector<unsigned char> ParseHex(const std::string& str);
143 bool IsHex(const std::string& str);
144 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
145 std::string DecodeBase64(const std::string& str);
146 std::string EncodeBase64(const unsigned char* pch, size_t len);
147 std::string EncodeBase64(const std::string& str);
148 void ParseParameters(int argc, const char*const argv[]);
149 bool WildcardMatch(const char* psz, const char* mask);
150 bool WildcardMatch(const std::string& str, const std::string& mask);
151 int GetFilesize(FILE* file);
152 void GetDataDir(char* pszDirRet);
153 std::string GetConfigFile();
154 std::string GetPidFile();
155 void CreatePidFile(std::string pidFile, pid_t pid);
156 bool ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
158 std::string MyGetSpecialFolderPath(int nFolder, bool fCreate);
160 std::string GetDefaultDataDir();
161 std::string GetDataDir();
162 void ShrinkDebugFile();
163 int GetRandInt(int nMax);
164 uint64 GetRand(uint64 nMax);
166 void SetMockTime(int64 nMockTimeIn);
167 int64 GetAdjustedTime();
168 std::string FormatFullVersion();
169 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
170 void AddTimeData(const CNetAddr& ip, int64 nTime);
183 // Wrapper to automatically initialize mutex
184 class CCriticalSection
187 boost::interprocess::interprocess_recursive_mutex mutex;
189 explicit CCriticalSection() { }
190 ~CCriticalSection() { }
191 void Enter(const char* pszName, const char* pszFile, int nLine);
193 bool TryEnter(const char* pszName, const char* pszFile, int nLine);
196 // Automatically leave critical section when leaving block, needed for exception safety
200 CCriticalSection* pcs;
203 CCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
206 pcs->Enter(pszName, pszFile, nLine);
209 operator bool() const
220 #define CRITICAL_BLOCK(cs) \
221 if (CCriticalBlock criticalblock = CCriticalBlock(cs, #cs, __FILE__, __LINE__))
223 #define ENTER_CRITICAL_SECTION(cs) \
224 (cs).Enter(#cs, __FILE__, __LINE__)
226 #define LEAVE_CRITICAL_SECTION(cs) \
229 class CTryCriticalBlock
232 CCriticalSection* pcs;
235 CTryCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
237 pcs = (csIn.TryEnter(pszName, pszFile, nLine) ? &csIn : NULL);
240 operator bool() const
252 bool Entered() const { return pcs != NULL; }
255 #define TRY_CRITICAL_BLOCK(cs) \
256 if (CTryCriticalBlock criticalblock = CTryCriticalBlock(cs, #cs, __FILE__, __LINE__))
263 // This is exactly like std::string, but with a custom allocator.
264 // (secure_allocator<> is defined in serialize.h)
265 typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
271 inline std::string i64tostr(int64 n)
273 return strprintf("%"PRI64d, n);
276 inline std::string itostr(int n)
278 return strprintf("%d", n);
281 inline int64 atoi64(const char* psz)
286 return strtoll(psz, NULL, 10);
290 inline int64 atoi64(const std::string& str)
293 return _atoi64(str.c_str());
295 return strtoll(str.c_str(), NULL, 10);
299 inline int atoi(const std::string& str)
301 return atoi(str.c_str());
304 inline int roundint(double d)
306 return (int)(d > 0 ? d + 0.5 : d - 0.5);
309 inline int64 roundint64(double d)
311 return (int64)(d > 0 ? d + 0.5 : d - 0.5);
314 inline int64 abs64(int64 n)
316 return (n >= 0 ? n : -n);
320 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
322 if (itbegin == itend)
324 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
325 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
327 str.reserve((pend-pbegin) * (fSpaces ? 3 : 2));
328 for (const unsigned char* p = pbegin; p != pend; p++)
329 str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
333 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
335 return HexStr(vch.begin(), vch.end(), fSpaces);
339 std::string HexNumStr(const T itbegin, const T itend, bool f0x=true)
341 if (itbegin == itend)
343 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
344 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
345 std::string str = (f0x ? "0x" : "");
346 str.reserve(str.size() + (pend-pbegin) * 2);
347 for (const unsigned char* p = pend-1; p >= pbegin; p--)
348 str += strprintf("%02x", *p);
352 inline std::string HexNumStr(const std::vector<unsigned char>& vch, bool f0x=true)
354 return HexNumStr(vch.begin(), vch.end(), f0x);
358 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
360 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
363 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
365 printf(pszFormat, HexStr(vch, fSpaces).c_str());
368 inline int64 GetPerformanceCounter()
372 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
375 gettimeofday(&t, NULL);
376 nCounter = t.tv_sec * 1000000 + t.tv_usec;
381 inline int64 GetTimeMillis()
383 return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
384 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
387 inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
390 struct tm* ptmTime = gmtime(&n);
392 strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
397 void skipspaces(T& it)
403 inline bool IsSwitchChar(char c)
406 return c == '-' || c == '/';
413 * Return string argument or default value
415 * @param strArg Argument to get (e.g. "-foo")
416 * @param default (e.g. "1")
417 * @return command-line argument or default value
419 std::string GetArg(const std::string& strArg, const std::string& strDefault);
422 * Return integer argument or default value
424 * @param strArg Argument to get (e.g. "-foo")
425 * @param default (e.g. 1)
426 * @return command-line argument (0 if invalid number) or default value
428 int64 GetArg(const std::string& strArg, int64 nDefault);
431 * Return boolean argument or default value
433 * @param strArg Argument to get (e.g. "-foo")
434 * @param default (true or false)
435 * @return command-line argument or default value
437 bool GetBoolArg(const std::string& strArg, bool fDefault=false);
440 * Set an argument if it doesn't already have a value
442 * @param strArg Argument to set (e.g. "-foo")
443 * @param strValue Value (e.g. "1")
444 * @return true if argument gets set, false if it already had a value
446 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
449 * Set a boolean argument if it doesn't already have a value
451 * @param strArg Argument to set (e.g. "-foo")
452 * @param fValue Value (e.g. false)
453 * @return true if argument gets set, false if it already had a value
455 bool SoftSetBoolArg(const std::string& strArg, bool fValue);
465 // Randomize the stack to help protect against buffer overrun exploits
466 #define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
468 static char nLoops; \
470 nLoops = GetRand(20) + 1; \
478 #define CATCH_PRINT_EXCEPTION(pszFn) \
479 catch (std::exception& e) { \
480 PrintException(&e, (pszFn)); \
482 PrintException(NULL, (pszFn)); \
494 template<typename T1>
495 inline uint256 Hash(const T1 pbegin, const T1 pend)
497 static unsigned char pblank[1];
499 SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
501 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
505 template<typename T1, typename T2>
506 inline uint256 Hash(const T1 p1begin, const T1 p1end,
507 const T2 p2begin, const T2 p2end)
509 static unsigned char pblank[1];
513 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
514 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
515 SHA256_Final((unsigned char*)&hash1, &ctx);
517 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
521 template<typename T1, typename T2, typename T3>
522 inline uint256 Hash(const T1 p1begin, const T1 p1end,
523 const T2 p2begin, const T2 p2end,
524 const T3 p3begin, const T3 p3end)
526 static unsigned char pblank[1];
530 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
531 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
532 SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
533 SHA256_Final((unsigned char*)&hash1, &ctx);
535 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
540 uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL_VERSION)
542 // Most of the time is spent allocating and deallocating CDataStream's
543 // buffer. If this ever needs to be optimized further, make a CStaticStream
544 // class with its buffer on the stack.
545 CDataStream ss(nType, nVersion);
548 return Hash(ss.begin(), ss.end());
551 inline uint160 Hash160(const std::vector<unsigned char>& vch)
554 SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
556 RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
561 // Median filter over a stream of values
562 // Returns the median of the last N numbers
563 template <typename T> class CMedianFilter
566 std::vector<T> vValues;
567 std::vector<T> vSorted;
570 CMedianFilter(int size, T initial_value):
573 vValues.reserve(size);
574 vValues.push_back(initial_value);
580 if(vValues.size() == nSize)
582 vValues.erase(vValues.begin());
584 vValues.push_back(value);
586 vSorted.resize(vValues.size());
587 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
588 std::sort(vSorted.begin(), vSorted.end());
593 int size = vSorted.size();
595 if(size & 1) // Odd number of elements
597 return vSorted[size/2];
599 else // Even number of elements
601 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
607 return vValues.size();
610 std::vector<T> sorted () const
625 // Note: It turns out we might have been able to use boost::thread
626 // by using TerminateThread(boost::thread.native_handle(), 0);
628 typedef HANDLE pthread_t;
630 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
635 NULL, // default security
636 0, // inherit stack size from parent
637 (LPTHREAD_START_ROUTINE)pfn, // function pointer
639 0, // creation option, start immediately
640 &nUnused); // thread identifier
643 printf("Error: CreateThread() returned %d\n", GetLastError());
648 CloseHandle(hthread);
649 return (pthread_t)-1;
654 inline void SetThreadPriority(int nPriority)
656 SetThreadPriority(GetCurrentThread(), nPriority);
659 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
661 pthread_t hthread = 0;
662 int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
665 printf("Error: pthread_create() returned %d\n", ret);
670 pthread_detach(hthread);
671 return (pthread_t)-1;
676 #define THREAD_PRIORITY_LOWEST PRIO_MAX
677 #define THREAD_PRIORITY_BELOW_NORMAL 2
678 #define THREAD_PRIORITY_NORMAL 0
679 #define THREAD_PRIORITY_ABOVE_NORMAL 0
681 inline void SetThreadPriority(int nPriority)
683 // It's unclear if it's even possible to change thread priorities on Linux,
684 // but we really and truly need it for the generation threads.
686 setpriority(PRIO_THREAD, 0, nPriority);
688 setpriority(PRIO_PROCESS, 0, nPriority);
692 inline bool TerminateThread(pthread_t hthread, unsigned int nExitCode)
694 return (pthread_cancel(hthread) == 0);
697 inline void ExitThread(size_t nExitCode)
699 pthread_exit((void*)nExitCode);
707 inline bool AffinityBugWorkaround(void(*pfn)(void*))
710 // Sometimes after a few hours affinity gets stuck on one processor
711 DWORD_PTR dwProcessAffinityMask = -1;
712 DWORD_PTR dwSystemAffinityMask = -1;
713 GetProcessAffinityMask(GetCurrentProcess(), &dwProcessAffinityMask, &dwSystemAffinityMask);
714 DWORD dwPrev1 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
715 DWORD dwPrev2 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
716 if (dwPrev2 != dwProcessAffinityMask)
718 printf("AffinityBugWorkaround() : SetThreadAffinityMask=%d, ProcessAffinityMask=%d, restarting thread\n", dwPrev2, dwProcessAffinityMask);
719 if (!CreateThread(pfn, NULL))
720 printf("Error: CreateThread() failed\n");
727 inline uint32_t ByteReverse(uint32_t value)
729 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
730 return (value<<16) | (value>>16);