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.
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/filesystem.hpp>
23 #include <boost/filesystem/path.hpp>
24 #include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
25 #include <boost/interprocess/sync/scoped_lock.hpp>
26 #include <boost/interprocess/sync/interprocess_semaphore.hpp>
27 #include <boost/interprocess/sync/lock_options.hpp>
28 #include <boost/date_time/gregorian/gregorian_types.hpp>
29 #include <boost/date_time/posix_time/posix_time_types.hpp>
31 #include <openssl/sha.h>
32 #include <openssl/ripemd.h>
34 #include "netbase.h" // for AddTimeData
36 typedef long long int64;
37 typedef unsigned long long uint64;
39 static const int64 COIN = 100000000;
40 static const int64 CENT = 1000000;
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(__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
92 #define unlink _unlink
94 #define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d)
95 #define strlwr(psz) to_lower(psz)
96 #define _strlwr(psz) to_lower(psz)
98 inline void Sleep(int64 n)
100 /*Boost has a year 2038 problem— if the request sleep time is past epoch+2^31 seconds the sleep returns instantly.
101 So we clamp our sleeps here to 10 years and hope that boost is fixed by 2028.*/
102 boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n>315576000000LL?315576000000LL:n));
114 extern std::map<std::string, std::string> mapArgs;
115 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
117 extern bool fPrintToConsole;
118 extern bool fPrintToDebugger;
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 boost::filesystem::path GetDefaultDataDir();
161 const boost::filesystem::path &GetDataDir(bool fNetSpecific = true);
162 boost::filesystem::path GetConfigFile();
163 boost::filesystem::path GetPidFile();
164 void CreatePidFile(const boost::filesystem::path &path, pid_t pid);
165 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
166 bool GetStartOnSystemStartup();
167 bool SetStartOnSystemStartup(bool fAutoStart);
168 void ShrinkDebugFile();
169 int GetRandInt(int nMax);
170 uint64 GetRand(uint64 nMax);
172 void SetMockTime(int64 nMockTimeIn);
173 int64 GetAdjustedTime();
174 std::string FormatFullVersion();
175 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
176 void AddTimeData(const CNetAddr& ip, int64 nTime);
188 /** Wrapped boost mutex: supports recursive locking, but no waiting */
189 typedef boost::interprocess::interprocess_recursive_mutex CCriticalSection;
191 /** Wrapped boost mutex: supports waiting but not recursive locking */
192 typedef boost::interprocess::interprocess_mutex CWaitableCriticalSection;
194 #ifdef DEBUG_LOCKORDER
195 void EnterCritical(const char* pszName, const char* pszFile, int nLine, void* cs, bool fTry = false);
196 void LeaveCritical();
198 void static inline EnterCritical(const char* pszName, const char* pszFile, int nLine, void* cs, bool fTry = false) {}
199 void static inline LeaveCritical() {}
202 /** Wrapper around boost::interprocess::scoped_lock */
203 template<typename Mutex>
207 boost::interprocess::scoped_lock<Mutex> lock;
210 void Enter(const char* pszName, const char* pszFile, int nLine)
214 EnterCritical(pszName, pszFile, nLine, (void*)(lock.mutex()));
215 #ifdef DEBUG_LOCKCONTENTION
216 if (!lock.try_lock())
218 printf("LOCKCONTENTION: %s\n", pszName);
219 printf("Locker: %s:%d\n", pszFile, nLine);
222 #ifdef DEBUG_LOCKCONTENTION
237 bool TryEnter(const char* pszName, const char* pszFile, int nLine)
241 EnterCritical(pszName, pszFile, nLine, (void*)(lock.mutex()), true);
249 CMutexLock(Mutex& mutexIn, const char* pszName, const char* pszFile, int nLine, bool fTry = false) : lock(mutexIn, boost::interprocess::defer_lock)
252 TryEnter(pszName, pszFile, nLine);
254 Enter(pszName, pszFile, nLine);
268 boost::interprocess::scoped_lock<Mutex> &GetLock()
274 typedef CMutexLock<CCriticalSection> CCriticalBlock;
276 #define LOCK(cs) CCriticalBlock criticalblock(cs, #cs, __FILE__, __LINE__)
277 #define LOCK2(cs1,cs2) CCriticalBlock criticalblock1(cs1, #cs1, __FILE__, __LINE__),criticalblock2(cs2, #cs2, __FILE__, __LINE__)
278 #define TRY_LOCK(cs,name) CCriticalBlock name(cs, #cs, __FILE__, __LINE__, true)
280 #define ENTER_CRITICAL_SECTION(cs) \
282 EnterCritical(#cs, __FILE__, __LINE__, (void*)(&cs)); \
286 #define LEAVE_CRITICAL_SECTION(cs) \
293 // boost::interprocess::interprocess_semaphore seems to spinlock on OSX; prefer polling instead
301 CSemaphore(int init) : val(init) {}
331 typedef boost::interprocess::interprocess_semaphore CSemaphore;
334 inline std::string i64tostr(int64 n)
336 return strprintf("%"PRI64d, n);
339 inline std::string itostr(int n)
341 return strprintf("%d", n);
344 inline int64 atoi64(const char* psz)
349 return strtoll(psz, NULL, 10);
353 inline int64 atoi64(const std::string& str)
356 return _atoi64(str.c_str());
358 return strtoll(str.c_str(), NULL, 10);
362 inline int atoi(const std::string& str)
364 return atoi(str.c_str());
367 inline int roundint(double d)
369 return (int)(d > 0 ? d + 0.5 : d - 0.5);
372 inline int64 roundint64(double d)
374 return (int64)(d > 0 ? d + 0.5 : d - 0.5);
377 inline int64 abs64(int64 n)
379 return (n >= 0 ? n : -n);
383 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
385 std::vector<char> rv;
386 static char hexmap[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
387 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
388 rv.reserve((itend-itbegin)*3);
389 for(T it = itbegin; it < itend; ++it)
391 unsigned char val = (unsigned char)(*it);
392 if(fSpaces && it != itbegin)
394 rv.push_back(hexmap[val>>4]);
395 rv.push_back(hexmap[val&15]);
398 return std::string(rv.begin(), rv.end());
401 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
403 return HexStr(vch.begin(), vch.end(), fSpaces);
407 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
409 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
412 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
414 printf(pszFormat, HexStr(vch, fSpaces).c_str());
417 inline int64 GetPerformanceCounter()
421 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
424 gettimeofday(&t, NULL);
425 nCounter = t.tv_sec * 1000000 + t.tv_usec;
430 inline int64 GetTimeMillis()
432 return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
433 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
436 inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
439 struct tm* ptmTime = gmtime(&n);
441 strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
446 void skipspaces(T& it)
452 inline bool IsSwitchChar(char c)
455 return c == '-' || c == '/';
462 * Return string argument or default value
464 * @param strArg Argument to get (e.g. "-foo")
465 * @param default (e.g. "1")
466 * @return command-line argument or default value
468 std::string GetArg(const std::string& strArg, const std::string& strDefault);
471 * Return integer argument or default value
473 * @param strArg Argument to get (e.g. "-foo")
474 * @param default (e.g. 1)
475 * @return command-line argument (0 if invalid number) or default value
477 int64 GetArg(const std::string& strArg, int64 nDefault);
480 * Return boolean argument or default value
482 * @param strArg Argument to get (e.g. "-foo")
483 * @param default (true or false)
484 * @return command-line argument or default value
486 bool GetBoolArg(const std::string& strArg, bool fDefault=false);
489 * Set an argument if it doesn't already have a value
491 * @param strArg Argument to set (e.g. "-foo")
492 * @param strValue Value (e.g. "1")
493 * @return true if argument gets set, false if it already had a value
495 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
498 * Set a boolean argument if it doesn't already have a value
500 * @param strArg Argument to set (e.g. "-foo")
501 * @param fValue Value (e.g. false)
502 * @return true if argument gets set, false if it already had a value
504 bool SoftSetBoolArg(const std::string& strArg, bool fValue);
514 // Randomize the stack to help protect against buffer overrun exploits
515 #define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
517 static char nLoops; \
519 nLoops = GetRand(20) + 1; \
528 template<typename T1>
529 inline uint256 Hash(const T1 pbegin, const T1 pend)
531 static unsigned char pblank[1];
533 SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
535 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
539 template<typename T1, typename T2>
540 inline uint256 Hash(const T1 p1begin, const T1 p1end,
541 const T2 p2begin, const T2 p2end)
543 static unsigned char pblank[1];
547 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
548 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
549 SHA256_Final((unsigned char*)&hash1, &ctx);
551 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
555 template<typename T1, typename T2, typename T3>
556 inline uint256 Hash(const T1 p1begin, const T1 p1end,
557 const T2 p2begin, const T2 p2end,
558 const T3 p3begin, const T3 p3end)
560 static unsigned char pblank[1];
564 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
565 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
566 SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
567 SHA256_Final((unsigned char*)&hash1, &ctx);
569 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
574 uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL_VERSION)
576 // Most of the time is spent allocating and deallocating CDataStream's
577 // buffer. If this ever needs to be optimized further, make a CStaticStream
578 // class with its buffer on the stack.
579 CDataStream ss(nType, nVersion);
582 return Hash(ss.begin(), ss.end());
585 inline uint160 Hash160(const std::vector<unsigned char>& vch)
588 SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
590 RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
595 /** Median filter over a stream of values.
596 * Returns the median of the last N numbers
598 template <typename T> class CMedianFilter
601 std::vector<T> vValues;
602 std::vector<T> vSorted;
605 CMedianFilter(unsigned int size, T initial_value):
608 vValues.reserve(size);
609 vValues.push_back(initial_value);
615 if(vValues.size() == nSize)
617 vValues.erase(vValues.begin());
619 vValues.push_back(value);
621 vSorted.resize(vValues.size());
622 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
623 std::sort(vSorted.begin(), vSorted.end());
628 int size = vSorted.size();
630 if(size & 1) // Odd number of elements
632 return vSorted[size/2];
634 else // Even number of elements
636 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
642 return vValues.size();
645 std::vector<T> sorted () const
660 // Note: It turns out we might have been able to use boost::thread
661 // by using TerminateThread(boost::thread.native_handle(), 0);
663 typedef HANDLE pthread_t;
665 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
670 NULL, // default security
671 0, // inherit stack size from parent
672 (LPTHREAD_START_ROUTINE)pfn, // function pointer
674 0, // creation option, start immediately
675 &nUnused); // thread identifier
678 printf("Error: CreateThread() returned %d\n", GetLastError());
683 CloseHandle(hthread);
684 return (pthread_t)-1;
689 inline void SetThreadPriority(int nPriority)
691 SetThreadPriority(GetCurrentThread(), nPriority);
694 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
696 pthread_t hthread = 0;
697 int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
700 printf("Error: pthread_create() returned %d\n", ret);
705 pthread_detach(hthread);
706 return (pthread_t)-1;
711 #define THREAD_PRIORITY_LOWEST PRIO_MAX
712 #define THREAD_PRIORITY_BELOW_NORMAL 2
713 #define THREAD_PRIORITY_NORMAL 0
714 #define THREAD_PRIORITY_ABOVE_NORMAL 0
716 inline void SetThreadPriority(int nPriority)
718 // It's unclear if it's even possible to change thread priorities on Linux,
719 // but we really and truly need it for the generation threads.
721 setpriority(PRIO_THREAD, 0, nPriority);
723 setpriority(PRIO_PROCESS, 0, nPriority);
727 inline void ExitThread(size_t nExitCode)
729 pthread_exit((void*)nExitCode);
737 inline uint32_t ByteReverse(uint32_t value)
739 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
740 return (value<<16) | (value>>16);