1 // Copyright (c) 2009-2010 Satoshi Nakamoto
2 // Copyright (c) 2011 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>
28 typedef long long int64;
29 typedef unsigned long long uint64;
32 #define BEGIN(a) ((char*)&(a))
33 #define END(a) ((char*)&((&(a))[1]))
34 #define UBEGIN(a) ((unsigned char*)&(a))
35 #define UEND(a) ((unsigned char*)&((&(a))[1]))
36 #define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
37 #define printf OutputDebugStringF
42 #define snprintf my_snprintf
45 #if defined(_MSC_VER) || defined(__MSVCRT__)
56 // This is needed because the foreach macro can't get over the comma in pair<t1, t2>
57 #define PAIRTYPE(t1, t2) std::pair<t1, t2>
59 // Align by increasing pointer, must have extra space at end of buffer
60 template <size_t nBytes, typename T>
69 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
74 #define MSG_NOSIGNAL 0
75 #define MSG_DONTWAIT 0
81 #define unlink _unlink
82 typedef int socklen_t;
84 #define WSAGetLastError() errno
85 #define WSAEINVAL EINVAL
86 #define WSAEALREADY EALREADY
87 #define WSAEWOULDBLOCK EWOULDBLOCK
88 #define WSAEMSGSIZE EMSGSIZE
89 #define WSAEINTR EINTR
90 #define WSAEINPROGRESS EINPROGRESS
91 #define WSAEADDRINUSE EADDRINUSE
92 #define WSAENOTSOCK EBADF
93 #define INVALID_SOCKET (SOCKET)(~0)
94 #define SOCKET_ERROR -1
96 #define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d)
97 #define strlwr(psz) to_lower(psz)
98 #define _strlwr(psz) to_lower(psz)
100 #define Beep(n1,n2) (0)
101 inline void Sleep(int64 n)
103 boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n));
107 inline int myclosesocket(SOCKET& hSocket)
109 if (hSocket == INVALID_SOCKET)
112 int ret = closesocket(hSocket);
114 int ret = close(hSocket);
116 hSocket = INVALID_SOCKET;
119 #define closesocket(s) myclosesocket(s)
121 inline const char* _(const char* psz)
135 extern std::map<std::string, std::string> mapArgs;
136 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
138 extern bool fPrintToConsole;
139 extern bool fPrintToDebugger;
140 extern char pszSetDataDir[MAX_PATH];
141 extern bool fRequestShutdown;
142 extern bool fShutdown;
145 extern bool fCommandLine;
146 extern std::string strMiscWarning;
147 extern bool fTestNet;
148 extern bool fNoListen;
149 extern bool fLogTimestamps;
152 void RandAddSeedPerfmon();
153 int OutputDebugStringF(const char* pszFormat, ...);
154 int my_snprintf(char* buffer, size_t limit, const char* format, ...);
155 std::string strprintf(const std::string &format, ...);
156 bool error(const std::string &format, ...);
157 void LogException(std::exception* pex, const char* pszThread);
158 void PrintException(std::exception* pex, const char* pszThread);
159 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
160 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
161 std::string FormatMoney(int64 n, bool fPlus=false);
162 bool ParseMoney(const std::string& str, int64& nRet);
163 bool ParseMoney(const char* pszIn, int64& nRet);
164 std::vector<unsigned char> ParseHex(const char* psz);
165 std::vector<unsigned char> ParseHex(const std::string& str);
166 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
167 std::string DecodeBase64(const std::string& str);
168 std::string EncodeBase64(const unsigned char* pch, size_t len);
169 std::string EncodeBase64(const std::string& str);
170 void ParseParameters(int argc, char* argv[]);
171 bool WildcardMatch(const char* psz, const char* mask);
172 bool WildcardMatch(const std::string& str, const std::string& mask);
173 int GetFilesize(FILE* file);
174 void GetDataDir(char* pszDirRet);
175 std::string GetConfigFile();
176 std::string GetPidFile();
177 void CreatePidFile(std::string pidFile, pid_t pid);
178 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
180 std::string MyGetSpecialFolderPath(int nFolder, bool fCreate);
182 std::string GetDefaultDataDir();
183 std::string GetDataDir();
184 void ShrinkDebugFile();
185 int GetRandInt(int nMax);
186 uint64 GetRand(uint64 nMax);
188 void SetMockTime(int64 nMockTimeIn);
189 int64 GetAdjustedTime();
190 void AddTimeData(unsigned int ip, int64 nTime);
191 std::string FormatFullVersion();
192 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
205 // Wrapper to automatically initialize mutex
206 class CCriticalSection
209 boost::interprocess::interprocess_recursive_mutex mutex;
211 explicit CCriticalSection() { }
212 ~CCriticalSection() { }
213 void Enter(const char* pszName, const char* pszFile, int nLine);
215 bool TryEnter(const char* pszName, const char* pszFile, int nLine);
218 // Automatically leave critical section when leaving block, needed for exception safety
222 CCriticalSection* pcs;
225 CCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
228 pcs->Enter(pszName, pszFile, nLine);
231 operator bool() const
242 #define CRITICAL_BLOCK(cs) \
243 if (CCriticalBlock criticalblock = CCriticalBlock(cs, #cs, __FILE__, __LINE__))
245 class CTryCriticalBlock
248 CCriticalSection* pcs;
251 CTryCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
253 pcs = (csIn.TryEnter(pszName, pszFile, nLine) ? &csIn : NULL);
256 operator bool() const
268 bool Entered() const { return pcs != NULL; }
271 #define TRY_CRITICAL_BLOCK(cs) \
272 if (CTryCriticalBlock criticalblock = CTryCriticalBlock(cs, #cs, __FILE__, __LINE__))
279 // This is exactly like std::string, but with a custom allocator.
280 // (secure_allocator<> is defined in serialize.h)
281 typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
287 inline std::string i64tostr(int64 n)
289 return strprintf("%"PRI64d, n);
292 inline std::string itostr(int n)
294 return strprintf("%d", n);
297 inline int64 atoi64(const char* psz)
302 return strtoll(psz, NULL, 10);
306 inline int64 atoi64(const std::string& str)
309 return _atoi64(str.c_str());
311 return strtoll(str.c_str(), NULL, 10);
315 inline int atoi(const std::string& str)
317 return atoi(str.c_str());
320 inline int roundint(double d)
322 return (int)(d > 0 ? d + 0.5 : d - 0.5);
325 inline int64 roundint64(double d)
327 return (int64)(d > 0 ? d + 0.5 : d - 0.5);
330 inline int64 abs64(int64 n)
332 return (n >= 0 ? n : -n);
336 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
338 if (itbegin == itend)
340 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
341 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
343 str.reserve((pend-pbegin) * (fSpaces ? 3 : 2));
344 for (const unsigned char* p = pbegin; p != pend; p++)
345 str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
349 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
351 return HexStr(vch.begin(), vch.end(), fSpaces);
355 std::string HexNumStr(const T itbegin, const T itend, bool f0x=true)
357 if (itbegin == itend)
359 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
360 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
361 std::string str = (f0x ? "0x" : "");
362 str.reserve(str.size() + (pend-pbegin) * 2);
363 for (const unsigned char* p = pend-1; p >= pbegin; p--)
364 str += strprintf("%02x", *p);
368 inline std::string HexNumStr(const std::vector<unsigned char>& vch, bool f0x=true)
370 return HexNumStr(vch.begin(), vch.end(), f0x);
374 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
376 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
379 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
381 printf(pszFormat, HexStr(vch, fSpaces).c_str());
384 inline int64 GetPerformanceCounter()
388 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
391 gettimeofday(&t, NULL);
392 nCounter = t.tv_sec * 1000000 + t.tv_usec;
397 inline int64 GetTimeMillis()
399 return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
400 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
403 inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
406 struct tm* ptmTime = gmtime(&n);
408 strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
413 void skipspaces(T& it)
419 inline bool IsSwitchChar(char c)
422 return c == '-' || c == '/';
428 inline std::string GetArg(const std::string& strArg, const std::string& strDefault)
430 if (mapArgs.count(strArg))
431 return mapArgs[strArg];
435 inline int64 GetArg(const std::string& strArg, int64 nDefault)
437 if (mapArgs.count(strArg))
438 return atoi64(mapArgs[strArg]);
442 inline bool GetBoolArg(const std::string& strArg)
444 if (mapArgs.count(strArg))
446 if (mapArgs[strArg].empty())
448 return (atoi(mapArgs[strArg]) != 0);
462 // Randomize the stack to help protect against buffer overrun exploits
463 #define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
465 static char nLoops; \
467 nLoops = GetRand(20) + 1; \
475 #define CATCH_PRINT_EXCEPTION(pszFn) \
476 catch (std::exception& e) { \
477 PrintException(&e, (pszFn)); \
479 PrintException(NULL, (pszFn)); \
491 template<typename T1>
492 inline uint256 Hash(const T1 pbegin, const T1 pend)
494 static unsigned char pblank[1];
496 SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
498 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
502 template<typename T1, typename T2>
503 inline uint256 Hash(const T1 p1begin, const T1 p1end,
504 const T2 p2begin, const T2 p2end)
506 static unsigned char pblank[1];
510 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
511 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
512 SHA256_Final((unsigned char*)&hash1, &ctx);
514 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
518 template<typename T1, typename T2, typename T3>
519 inline uint256 Hash(const T1 p1begin, const T1 p1end,
520 const T2 p2begin, const T2 p2end,
521 const T3 p3begin, const T3 p3end)
523 static unsigned char pblank[1];
527 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
528 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
529 SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
530 SHA256_Final((unsigned char*)&hash1, &ctx);
532 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
537 uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL_VERSION)
539 // Most of the time is spent allocating and deallocating CDataStream's
540 // buffer. If this ever needs to be optimized further, make a CStaticStream
541 // class with its buffer on the stack.
542 CDataStream ss(nType, nVersion);
545 return Hash(ss.begin(), ss.end());
548 inline uint160 Hash160(const std::vector<unsigned char>& vch)
551 SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
553 RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
558 // Median filter over a stream of values
559 // Returns the median of the last N numbers
560 template <typename T> class CMedianFilter
563 std::vector<T> vValues;
564 std::vector<T> vSorted;
567 CMedianFilter(int size, T initial_value):
570 vValues.reserve(size);
571 vValues.push_back(initial_value);
577 if(vValues.size() == nSize)
579 vValues.erase(vValues.begin());
581 vValues.push_back(value);
583 vSorted.resize(vValues.size());
584 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
585 std::sort(vSorted.begin(), vSorted.end());
590 int size = vSorted.size();
592 if(size & 1) // Odd number of elements
594 return vSorted[size/2];
596 else // Even number of elements
598 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
604 return vValues.size();
607 std::vector<T> sorted () const
622 // Note: It turns out we might have been able to use boost::thread
623 // by using TerminateThread(boost::thread.native_handle(), 0);
625 typedef HANDLE pthread_t;
627 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
632 NULL, // default security
633 0, // inherit stack size from parent
634 (LPTHREAD_START_ROUTINE)pfn, // function pointer
636 0, // creation option, start immediately
637 &nUnused); // thread identifier
640 printf("Error: CreateThread() returned %d\n", GetLastError());
645 CloseHandle(hthread);
646 return (pthread_t)-1;
651 inline void SetThreadPriority(int nPriority)
653 SetThreadPriority(GetCurrentThread(), nPriority);
656 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
658 pthread_t hthread = 0;
659 int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
662 printf("Error: pthread_create() returned %d\n", ret);
667 pthread_detach(hthread);
668 return (pthread_t)-1;
673 #define THREAD_PRIORITY_LOWEST PRIO_MAX
674 #define THREAD_PRIORITY_BELOW_NORMAL 2
675 #define THREAD_PRIORITY_NORMAL 0
676 #define THREAD_PRIORITY_ABOVE_NORMAL 0
678 inline void SetThreadPriority(int nPriority)
680 // It's unclear if it's even possible to change thread priorities on Linux,
681 // but we really and truly need it for the generation threads.
683 setpriority(PRIO_THREAD, 0, nPriority);
685 setpriority(PRIO_PROCESS, 0, nPriority);
689 inline bool TerminateThread(pthread_t hthread, unsigned int nExitCode)
691 return (pthread_cancel(hthread) == 0);
694 inline void ExitThread(size_t nExitCode)
696 pthread_exit((void*)nExitCode);
704 inline bool AffinityBugWorkaround(void(*pfn)(void*))
707 // Sometimes after a few hours affinity gets stuck on one processor
708 DWORD_PTR dwProcessAffinityMask = -1;
709 DWORD_PTR dwSystemAffinityMask = -1;
710 GetProcessAffinityMask(GetCurrentProcess(), &dwProcessAffinityMask, &dwSystemAffinityMask);
711 DWORD dwPrev1 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
712 DWORD dwPrev2 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
713 if (dwPrev2 != dwProcessAffinityMask)
715 printf("AffinityBugWorkaround() : SetThreadAffinityMask=%d, ProcessAffinityMask=%d, restarting thread\n", dwPrev2, dwProcessAffinityMask);
716 if (!CreateThread(pfn, NULL))
717 printf("Error: CreateThread() failed\n");
724 inline uint32_t ByteReverse(uint32_t value)
726 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
727 return (value<<16) | (value>>16);