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>
28 #if defined(_MSC_VER) || defined(__BORLANDC__)
29 typedef __int64 int64;
30 typedef unsigned __int64 uint64;
32 typedef long long int64;
33 typedef unsigned long long uint64;
35 #if defined(_MSC_VER) && _MSC_VER < 1300
36 #define for if (false) ; else for
39 #define __forceinline inline
43 #define BEGIN(a) ((char*)&(a))
44 #define END(a) ((char*)&((&(a))[1]))
45 #define UBEGIN(a) ((unsigned char*)&(a))
46 #define UEND(a) ((unsigned char*)&((&(a))[1]))
47 #define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
48 #define printf OutputDebugStringF
53 #define snprintf my_snprintf
56 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MSVCRT__)
67 // This is needed because the foreach macro can't get over the comma in pair<t1, t2>
68 #define PAIRTYPE(t1, t2) std::pair<t1, t2>
70 // Align by increasing pointer, must have extra space at end of buffer
71 template <size_t nBytes, typename T>
80 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
85 #define MSG_NOSIGNAL 0
86 #define MSG_DONTWAIT 0
88 #define UINT64_MAX _UI64_MAX
89 #define INT64_MAX _I64_MAX
90 #define INT64_MIN _I64_MIN
96 #define unlink _unlink
97 typedef int socklen_t;
99 #define WSAGetLastError() errno
100 #define WSAEINVAL EINVAL
101 #define WSAEALREADY EALREADY
102 #define WSAEWOULDBLOCK EWOULDBLOCK
103 #define WSAEMSGSIZE EMSGSIZE
104 #define WSAEINTR EINTR
105 #define WSAEINPROGRESS EINPROGRESS
106 #define WSAEADDRINUSE EADDRINUSE
107 #define WSAENOTSOCK EBADF
108 #define INVALID_SOCKET (SOCKET)(~0)
109 #define SOCKET_ERROR -1
110 typedef u_int SOCKET;
111 #define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d)
112 #define strlwr(psz) to_lower(psz)
113 #define _strlwr(psz) to_lower(psz)
114 #define MAX_PATH 1024
115 #define Beep(n1,n2) (0)
116 inline void Sleep(int64 n)
118 /*Boost has a year 2038 problem— if the request sleep time is past epoch+2^31 seconds the sleep returns instantly.
119 So we clamp our sleeps here to 10 years and hope that boost is fixed by 2028.*/
120 boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n>315576000000LL?315576000000LL:n));
124 inline int myclosesocket(SOCKET& hSocket)
126 if (hSocket == INVALID_SOCKET)
129 int ret = closesocket(hSocket);
131 int ret = close(hSocket);
133 hSocket = INVALID_SOCKET;
136 #define closesocket(s) myclosesocket(s)
138 inline const char* _(const char* psz)
152 extern std::map<std::string, std::string> mapArgs;
153 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
155 extern bool fPrintToConsole;
156 extern bool fPrintToDebugger;
157 extern char pszSetDataDir[MAX_PATH];
158 extern bool fRequestShutdown;
159 extern bool fShutdown;
162 extern bool fCommandLine;
163 extern std::string strMiscWarning;
164 extern bool fTestNet;
165 extern bool fNoListen;
166 extern bool fLogTimestamps;
169 void RandAddSeedPerfmon();
170 int OutputDebugStringF(const char* pszFormat, ...);
171 int my_snprintf(char* buffer, size_t limit, const char* format, ...);
172 std::string strprintf(const std::string &format, ...);
173 bool error(const std::string &format, ...);
174 void LogException(std::exception* pex, const char* pszThread);
175 void PrintException(std::exception* pex, const char* pszThread);
176 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
177 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
178 std::string FormatMoney(int64 n, bool fPlus=false);
179 bool ParseMoney(const std::string& str, int64& nRet);
180 bool ParseMoney(const char* pszIn, int64& nRet);
181 std::vector<unsigned char> ParseHex(const char* psz);
182 std::vector<unsigned char> ParseHex(const std::string& str);
183 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
184 std::string DecodeBase64(const std::string& str);
185 std::string EncodeBase64(const unsigned char* pch, size_t len);
186 std::string EncodeBase64(const std::string& str);
187 void ParseParameters(int argc, char* argv[]);
188 const char* wxGetTranslation(const char* psz);
189 bool WildcardMatch(const char* psz, const char* mask);
190 bool WildcardMatch(const std::string& str, const std::string& mask);
191 int GetFilesize(FILE* file);
192 void GetDataDir(char* pszDirRet);
193 std::string GetConfigFile();
194 std::string GetPidFile();
195 void CreatePidFile(std::string pidFile, pid_t pid);
196 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
198 std::string MyGetSpecialFolderPath(int nFolder, bool fCreate);
200 std::string GetDefaultDataDir();
201 std::string GetDataDir();
202 void ShrinkDebugFile();
203 int GetRandInt(int nMax);
204 uint64 GetRand(uint64 nMax);
206 void SetMockTime(int64 nMockTimeIn);
207 int64 GetAdjustedTime();
208 void AddTimeData(unsigned int ip, int64 nTime);
209 std::string FormatFullVersion();
223 // Wrapper to automatically initialize mutex
224 class CCriticalSection
227 boost::interprocess::interprocess_recursive_mutex mutex;
229 explicit CCriticalSection() { }
230 ~CCriticalSection() { }
231 void Enter(const char* pszName, const char* pszFile, int nLine);
233 bool TryEnter(const char* pszName, const char* pszFile, int nLine);
236 // Automatically leave critical section when leaving block, needed for exception safety
240 CCriticalSection* pcs;
243 CCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
246 pcs->Enter(pszName, pszFile, nLine);
254 // WARNING: This will catch continue and break!
255 // break is caught with an assertion, but there's no way to detect continue.
256 // I'd rather be careful than suffer the other more error prone syntax.
257 // The compiler will optimise away all this loop junk.
258 #define CRITICAL_BLOCK(cs) \
259 for (bool fcriticalblockonce=true; fcriticalblockonce; assert(("break caught by CRITICAL_BLOCK!" && !fcriticalblockonce)), fcriticalblockonce=false) \
260 for (CCriticalBlock criticalblock(cs, #cs, __FILE__, __LINE__); fcriticalblockonce; fcriticalblockonce=false)
262 #define ENTER_CRITICAL_SECTION(cs) \
263 (cs).Enter(#cs, __FILE__, __LINE__)
265 #define LEAVE_CRITICAL_SECTION(cs) \
268 class CTryCriticalBlock
271 CCriticalSection* pcs;
274 CTryCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
276 pcs = (csIn.TryEnter(pszName, pszFile, nLine) ? &csIn : NULL);
285 bool Entered() { return pcs != NULL; }
288 #define TRY_CRITICAL_BLOCK(cs) \
289 for (bool fcriticalblockonce=true; fcriticalblockonce; assert(("break caught by TRY_CRITICAL_BLOCK!" && !fcriticalblockonce)), fcriticalblockonce=false) \
290 for (CTryCriticalBlock criticalblock(cs, #cs, __FILE__, __LINE__); fcriticalblockonce && (fcriticalblockonce = criticalblock.Entered()); fcriticalblockonce=false)
297 // This is exactly like std::string, but with a custom allocator.
298 // (secure_allocator<> is defined in serialize.h)
299 typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
305 inline std::string i64tostr(int64 n)
307 return strprintf("%"PRI64d, n);
310 inline std::string itostr(int n)
312 return strprintf("%d", n);
315 inline int64 atoi64(const char* psz)
320 return strtoll(psz, NULL, 10);
324 inline int64 atoi64(const std::string& str)
327 return _atoi64(str.c_str());
329 return strtoll(str.c_str(), NULL, 10);
333 inline int atoi(const std::string& str)
335 return atoi(str.c_str());
338 inline int roundint(double d)
340 return (int)(d > 0 ? d + 0.5 : d - 0.5);
343 inline int64 roundint64(double d)
345 return (int64)(d > 0 ? d + 0.5 : d - 0.5);
348 inline int64 abs64(int64 n)
350 return (n >= 0 ? n : -n);
354 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
356 if (itbegin == itend)
358 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
359 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
361 str.reserve((pend-pbegin) * (fSpaces ? 3 : 2));
362 for (const unsigned char* p = pbegin; p != pend; p++)
363 str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
367 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
369 return HexStr(vch.begin(), vch.end(), fSpaces);
373 std::string HexNumStr(const T itbegin, const T itend, bool f0x=true)
375 if (itbegin == itend)
377 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
378 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
379 std::string str = (f0x ? "0x" : "");
380 str.reserve(str.size() + (pend-pbegin) * 2);
381 for (const unsigned char* p = pend-1; p >= pbegin; p--)
382 str += strprintf("%02x", *p);
386 inline std::string HexNumStr(const std::vector<unsigned char>& vch, bool f0x=true)
388 return HexNumStr(vch.begin(), vch.end(), f0x);
392 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
394 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
397 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
399 printf(pszFormat, HexStr(vch, fSpaces).c_str());
402 inline int64 GetPerformanceCounter()
406 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
409 gettimeofday(&t, NULL);
410 nCounter = t.tv_sec * 1000000 + t.tv_usec;
415 inline int64 GetTimeMillis()
417 return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
418 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
421 inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
424 struct tm* ptmTime = gmtime(&n);
426 strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
431 void skipspaces(T& it)
437 inline bool IsSwitchChar(char c)
440 return c == '-' || c == '/';
446 inline std::string GetArg(const std::string& strArg, const std::string& strDefault)
448 if (mapArgs.count(strArg))
449 return mapArgs[strArg];
453 inline int64 GetArg(const std::string& strArg, int64 nDefault)
455 if (mapArgs.count(strArg))
456 return atoi64(mapArgs[strArg]);
460 inline bool GetBoolArg(const std::string& strArg, bool fDefault=false)
462 if (mapArgs.count(strArg))
464 if (mapArgs[strArg].empty())
466 return (atoi(mapArgs[strArg]) != 0);
472 * Set an argument if it doesn't already have a value
474 * @param strArg Argument to set (e.g. "-foo")
475 * @param strValue Value (e.g. "1")
476 * @return true if argument gets set, false if it already had a value
478 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
481 * Set a boolean argument if it doesn't already have a value
483 * @param strArg Argument to set (e.g. "-foo")
484 * @param fValue Value (e.g. false)
485 * @return true if argument gets set, false if it already had a value
487 bool SoftSetArg(const std::string& strArg, bool fValue);
497 inline void heapchk()
501 //if (_heapchk() != _HEAPOK)
506 // Randomize the stack to help protect against buffer overrun exploits
507 #define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
509 static char nLoops; \
511 nLoops = GetRand(20) + 1; \
519 #define CATCH_PRINT_EXCEPTION(pszFn) \
520 catch (std::exception& e) { \
521 PrintException(&e, (pszFn)); \
523 PrintException(NULL, (pszFn)); \
535 template<typename T1>
536 inline uint256 Hash(const T1 pbegin, const T1 pend)
538 static unsigned char pblank[1];
540 SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
542 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
546 template<typename T1, typename T2>
547 inline uint256 Hash(const T1 p1begin, const T1 p1end,
548 const T2 p2begin, const T2 p2end)
550 static unsigned char pblank[1];
554 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
555 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
556 SHA256_Final((unsigned char*)&hash1, &ctx);
558 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
562 template<typename T1, typename T2, typename T3>
563 inline uint256 Hash(const T1 p1begin, const T1 p1end,
564 const T2 p2begin, const T2 p2end,
565 const T3 p3begin, const T3 p3end)
567 static unsigned char pblank[1];
571 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
572 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
573 SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
574 SHA256_Final((unsigned char*)&hash1, &ctx);
576 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
581 uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=VERSION)
583 // Most of the time is spent allocating and deallocating CDataStream's
584 // buffer. If this ever needs to be optimized further, make a CStaticStream
585 // class with its buffer on the stack.
586 CDataStream ss(nType, nVersion);
589 return Hash(ss.begin(), ss.end());
592 inline uint160 Hash160(const std::vector<unsigned char>& vch)
595 SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
597 RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
602 // Median filter over a stream of values
603 // Returns the median of the last N numbers
604 template <typename T> class CMedianFilter
607 std::vector<T> vValues;
608 std::vector<T> vSorted;
611 CMedianFilter(int size, T initial_value):
614 vValues.reserve(size);
615 vValues.push_back(initial_value);
621 if(vValues.size() == nSize)
623 vValues.erase(vValues.begin());
625 vValues.push_back(value);
627 vSorted.resize(vValues.size());
628 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
629 std::sort(vSorted.begin(), vSorted.end());
634 int size = vSorted.size();
636 if(size & 1) // Odd number of elements
638 return vSorted[size/2];
640 else // Even number of elements
642 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
656 // Note: It turns out we might have been able to use boost::thread
657 // by using TerminateThread(boost::thread.native_handle(), 0);
659 typedef HANDLE pthread_t;
661 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
666 NULL, // default security
667 0, // inherit stack size from parent
668 (LPTHREAD_START_ROUTINE)pfn, // function pointer
670 0, // creation option, start immediately
671 &nUnused); // thread identifier
674 printf("Error: CreateThread() returned %d\n", GetLastError());
679 CloseHandle(hthread);
680 return (pthread_t)-1;
685 inline void SetThreadPriority(int nPriority)
687 SetThreadPriority(GetCurrentThread(), nPriority);
690 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
692 pthread_t hthread = 0;
693 int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
696 printf("Error: pthread_create() returned %d\n", ret);
701 pthread_detach(hthread);
702 return (pthread_t)-1;
707 #define THREAD_PRIORITY_LOWEST PRIO_MAX
708 #define THREAD_PRIORITY_BELOW_NORMAL 2
709 #define THREAD_PRIORITY_NORMAL 0
710 #define THREAD_PRIORITY_ABOVE_NORMAL 0
712 inline void SetThreadPriority(int nPriority)
714 // It's unclear if it's even possible to change thread priorities on Linux,
715 // but we really and truly need it for the generation threads.
717 setpriority(PRIO_THREAD, 0, nPriority);
719 setpriority(PRIO_PROCESS, 0, nPriority);
723 inline bool TerminateThread(pthread_t hthread, unsigned int nExitCode)
725 return (pthread_cancel(hthread) == 0);
728 inline void ExitThread(size_t nExitCode)
730 pthread_exit((void*)nExitCode);
738 inline bool AffinityBugWorkaround(void(*pfn)(void*))
741 // Sometimes after a few hours affinity gets stuck on one processor
742 DWORD_PTR dwProcessAffinityMask = -1;
743 DWORD_PTR dwSystemAffinityMask = -1;
744 GetProcessAffinityMask(GetCurrentProcess(), &dwProcessAffinityMask, &dwSystemAffinityMask);
745 DWORD dwPrev1 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
746 DWORD dwPrev2 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
747 if (dwPrev2 != dwProcessAffinityMask)
749 printf("AffinityBugWorkaround() : SetThreadAffinityMask=%d, ProcessAffinityMask=%d, restarting thread\n", dwPrev2, dwProcessAffinityMask);
750 if (!CreateThread(pfn, NULL))
751 printf("Error: CreateThread() failed\n");
758 inline uint32_t ByteReverse(uint32_t value)
760 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
761 return (value<<16) | (value>>16);