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.
12 #include <sys/types.h>
14 #include <sys/resource.h>
24 #include <boost/thread.hpp>
25 #include <boost/filesystem.hpp>
26 #include <boost/filesystem/path.hpp>
27 #include <boost/date_time/gregorian/gregorian_types.hpp>
28 #include <boost/date_time/posix_time/posix_time_types.hpp>
33 #if defined(__USE_MINGW_ANSI_STDIO)
34 #undef __USE_MINGW_ANSI_STDIO // This constant forces MinGW to conduct stupid behavior
38 #include "netbase.h" // for AddTimeData
40 static const int32_t nOneHour = 60 * 60;
41 static const int32_t nOneDay = 24 * 60 * 60;
42 static const int64_t nOneWeek = 7 * 24 * 60 * 60;
44 static const int64_t COIN = 1000000;
45 static const int64_t CENT = 10000;
47 #define BEGIN(a) ((char*)&(a))
48 #define END(a) ((char*)&((&(a))[1]))
49 #define UBEGIN(a) ((unsigned char*)&(a))
50 #define UEND(a) ((unsigned char*)&((&(a))[1]))
51 #define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
53 #define UVOIDBEGIN(a) ((void*)&(a))
54 #define CVOIDBEGIN(a) ((const void*)&(a))
55 #define UINTBEGIN(a) ((uint32_t*)&(a))
56 #define CUINTBEGIN(a) ((const uint32_t*)&(a))
58 #ifndef THROW_WITH_STACKTRACE
59 #define THROW_WITH_STACKTRACE(exception) \
67 #if defined(_MSC_VER) || defined(__MSVCRT__)
68 /* Silence compiler warnings on Windows
69 related to MinGWs inttypes.h */
80 /* Format characters for (s)size_t and ptrdiff_t */
81 #if defined(_MSC_VER) || defined(__MSVCRT__)
82 /* (s)size_t and ptrdiff_t have the same size specifier in MSVC:
83 http://msdn.microsoft.com/en-us/library/tcxf1dw6%28v=vs.100%29.aspx
91 #else /* C99 standard */
100 // Align by increasing pointer, must have extra space at end of buffer
101 template <size_t nBytes, typename T>
110 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
115 #define MSG_NOSIGNAL 0
116 #define MSG_DONTWAIT 0
123 #define MAX_PATH 1024
124 inline void Sleep(int64_t n)
126 this_thread::sleep_for(std::chrono::milliseconds(n));
130 /* This GNU C extension enables the compiler to check the format string against the parameters provided.
131 * X is the number of the "format string" parameter, and Y is the number of the first variadic parameter.
132 * Parameters count from 1.
135 #define ATTR_WARN_PRINTF(X,Y) __attribute__((format(printf,X,Y)))
137 #define ATTR_WARN_PRINTF(X,Y)
147 extern std::map<std::string, std::string> mapArgs;
148 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
150 extern bool fDebugNet;
151 extern bool fPrintToConsole;
152 extern bool fPrintToDebugger;
153 extern bool fRequestShutdown;
154 extern bool fShutdown;
157 extern bool fCommandLine;
158 extern std::string strMiscWarning;
159 extern bool fTestNet;
160 extern bool fNoListen;
161 extern bool fLogTimestamps;
162 extern bool fReopenDebugLog;
165 void RandAddSeedPerfmon();
166 int ATTR_WARN_PRINTF(1,2) OutputDebugStringF(const char* pszFormat, ...);
169 Rationale for the real_strprintf / strprintf construction:
170 It is not allowed to use va_start with a pass-by-reference argument.
171 (C++ standard, 18.7, paragraph 3). Use a dummy argument to work around this, and use a
172 macro to keep similar semantics.
175 /** Overload strprintf for char*, so that GCC format type warnings can be given */
176 std::string ATTR_WARN_PRINTF(1,3) real_strprintf(const char *format, int dummy, ...);
177 /** Overload strprintf for std::string, to be able to use it with _ (translation).
178 * This will not support GCC format type warnings (-Wformat) so be careful.
180 std::string real_strprintf(const std::string &format, int dummy, ...);
181 #define strprintf(format, ...) real_strprintf(format, 0, __VA_ARGS__)
182 std::string vstrprintf(const char *format, va_list ap);
184 bool ATTR_WARN_PRINTF(1,2) error(const char *format, ...);
186 /* Redefine printf so that it directs output to debug.log
188 * Do this *after* defining the other printf-like functions, because otherwise the
189 * __attribute__((format(printf,X,Y))) gets expanded to __attribute__((format(OutputDebugStringF,X,Y)))
190 * which confuses gcc.
192 #define printf OutputDebugStringF
194 void LogException(std::exception* pex, const char* pszThread);
195 void PrintException(std::exception* pex, const char* pszThread);
196 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
197 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
198 std::string FormatMoney(int64_t n, bool fPlus=false);
199 bool ParseMoney(const std::string& str, int64_t& nRet);
200 bool ParseMoney(const char* pszIn, int64_t& nRet);
201 std::vector<uint8_t> ParseHex(const std::string& str);
202 bool IsHex(const std::string& str);
203 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
204 std::string DecodeBase64(const std::string& str);
205 std::string EncodeBase64(const unsigned char* pch, size_t len);
206 std::string EncodeBase64(const std::string& str);
207 std::vector<unsigned char> DecodeBase32(const char* p, bool* pfInvalid = NULL);
208 std::string DecodeBase32(const std::string& str);
209 std::string EncodeBase32(const unsigned char* pch, size_t len);
210 std::string EncodeBase32(const std::string& str);
211 std::string EncodeDumpTime(int64_t nTime);
212 int64_t DecodeDumpTime(const std::string& s);
213 std::string EncodeDumpString(const std::string &str);
214 std::string DecodeDumpString(const std::string &str);
215 void ParseParameters(int argc, const char*const argv[]);
216 bool WildcardMatch(const char* psz, const char* mask);
217 bool WildcardMatch(const std::string& str, const std::string& mask);
218 void FileCommit(FILE *fileout);
219 int GetFilesize(FILE* file);
220 bool RenameOver(boost::filesystem::path src, boost::filesystem::path dest);
221 boost::filesystem::path GetDefaultDataDir();
222 const boost::filesystem::path &GetDataDir(bool fNetSpecific = true);
223 boost::filesystem::path GetConfigFile();
224 boost::filesystem::path GetPidFile();
226 void CreatePidFile(const boost::filesystem::path &path, pid_t pid);
228 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
230 boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
232 void ShrinkDebugFile();
233 int GetRandInt(int nMax);
234 uint64_t GetRand(uint64_t nMax);
235 uint256 GetRandHash();
237 int64_t GetTimeMillis();
238 int64_t GetTimeMicros();
240 int64_t GetAdjustedTime();
241 int64_t GetTimeOffset();
242 int64_t GetNodesOffset();
243 std::string FormatFullVersion();
244 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
245 void AddTimeData(const CNetAddr& ip, int64_t nTime);
246 void runCommand(std::string strCommand);
252 inline std::string i64tostr(int64_t n)
254 return strprintf("%" PRId64, n);
257 inline std::string itostr(int n)
259 return strprintf("%d", n);
262 inline int64_t atoi64(const char* psz)
267 return strtoll(psz, NULL, 10);
271 inline int64_t atoi64(const std::string& str)
274 return _atoi64(str.c_str());
276 return strtoll(str.c_str(), NULL, 10);
280 inline int32_t strtol(const char* psz)
282 return strtol(psz, NULL, 10);
285 inline int32_t strtol(const std::string& str)
287 return strtol(str.c_str(), NULL, 10);
290 inline uint32_t strtoul(const char* psz)
292 return strtoul(psz, NULL, 10);
295 inline uint32_t strtoul(const std::string& str)
297 return strtoul(str.c_str(), NULL, 10);
300 inline int atoi(const std::string& str)
302 return atoi(str.c_str());
305 inline int roundint(double d)
307 return (int)(d > 0 ? d + 0.5 : d - 0.5);
310 inline int64_t roundint64(double d)
312 return (int64_t)(d > 0 ? d + 0.5 : d - 0.5);
315 inline std::string leftTrim(std::string src, char chr)
317 std::string::size_type pos = src.find_first_not_of(chr, 0);
326 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
329 static const char hexmap[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
330 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
331 rv.reserve((itend-itbegin)*3);
332 for(T it = itbegin; it < itend; ++it)
334 unsigned char val = (unsigned char)(*it);
335 if(fSpaces && it != itbegin)
337 rv.push_back(hexmap[val>>4]);
338 rv.push_back(hexmap[val&15]);
344 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
346 return HexStr(vch.begin(), vch.end(), fSpaces);
350 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
352 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
355 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
357 printf(pszFormat, HexStr(vch, fSpaces).c_str());
360 inline int64_t GetPerformanceCounter()
362 int64_t nCounter = 0;
364 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
367 gettimeofday(&t, NULL);
368 nCounter = (int64_t) t.tv_sec * 1000000 + t.tv_usec;
373 inline int64_t GetTimeMillis()
375 return (boost::posix_time::microsec_clock::universal_time() -
376 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
379 inline int64_t GetTimeMicros()
381 return (boost::posix_time::microsec_clock::universal_time() -
382 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_microseconds();
385 std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime);
387 static const std::string strTimestampFormat = "%Y-%m-%d %H:%M:%S UTC";
388 inline std::string DateTimeStrFormat(int64_t nTime)
390 return DateTimeStrFormat(strTimestampFormat.c_str(), nTime);
395 void skipspaces(T& it)
401 inline bool IsSwitchChar(char c)
404 return c == '-' || c == '/';
411 * Return string argument or default value
413 * @param strArg Argument to get (e.g. "-foo")
414 * @param default (e.g. "1")
415 * @return command-line argument or default value
417 std::string GetArg(const std::string& strArg, const std::string& strDefault);
420 * Return 64-bit integer argument or default value
422 * @param strArg Argument to get (e.g. "-foo")
423 * @param default (e.g. 1)
424 * @return command-line argument (0 if invalid number) or default value
426 int64_t GetArg(const std::string& strArg, int64_t nDefault);
429 * Return 32-bit integer argument or default value
431 * @param strArg Argument to get (e.g. "-foo")
432 * @param default (e.g. 1)
433 * @return command-line argument (0 if invalid number) or default value
435 int32_t GetArgInt(const std::string& strArg, int32_t nDefault);
438 * Return 32-bit unsigned integer argument or default value
440 * @param strArg Argument to get (e.g. "-foo")
441 * @param default (e.g. 1)
442 * @return command-line argument (0 if invalid number) or default value
444 uint32_t GetArgUInt(const std::string& strArg, uint32_t nDefault);
447 * Return boolean argument or default value
449 * @param strArg Argument to get (e.g. "-foo")
450 * @param default (true or false)
451 * @return command-line argument or default value
453 bool GetBoolArg(const std::string& strArg, bool fDefault=false);
456 * Set an argument if it doesn't already have a value
458 * @param strArg Argument to set (e.g. "-foo")
459 * @param strValue Value (e.g. "1")
460 * @return true if argument gets set, false if it already had a value
462 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
465 * Set a boolean argument if it doesn't already have a value
467 * @param strArg Argument to set (e.g. "-foo")
468 * @param fValue Value (e.g. false)
469 * @return true if argument gets set, false if it already had a value
471 bool SoftSetBoolArg(const std::string& strArg, bool fValue);
474 * Timing-attack-resistant comparison.
475 * Takes time proportional to length
478 template <typename T>
479 bool TimingResistantEqual(const T& a, const T& b)
481 if (b.size() == 0) return a.size() == 0;
482 size_t accumulator = a.size() ^ b.size();
483 for (size_t i = 0; i < a.size(); i++)
484 accumulator |= a[i] ^ b[i%b.size()];
485 return accumulator == 0;
488 /** Median filter over a stream of values.
489 * Returns the median of the last N numbers
491 template <typename T> class CMedianFilter
494 std::vector<T> vValues;
495 std::vector<T> vSorted;
498 CMedianFilter(unsigned int size, T initial_value):
501 vValues.reserve(size);
502 vValues.push_back(initial_value);
508 if(vValues.size() == nSize)
510 vValues.erase(vValues.begin());
512 vValues.push_back(value);
514 vSorted.resize(vValues.size());
515 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
516 std::sort(vSorted.begin(), vSorted.end());
521 size_t size = vSorted.size();
523 if(size & 1) // Odd number of elements
525 return vSorted[size/2];
527 else // Even number of elements
529 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
535 return static_cast<int>(vValues.size());
538 std::vector<T> sorted () const
544 bool NewThread(void(*pfn)(void*), void* parg);
547 inline void SetThreadPriority(int nPriority)
549 SetThreadPriority(GetCurrentThread(), nPriority);
553 #define THREAD_PRIORITY_LOWEST PRIO_MAX
554 #define THREAD_PRIORITY_BELOW_NORMAL 2
555 #define THREAD_PRIORITY_NORMAL 0
556 #define THREAD_PRIORITY_ABOVE_NORMAL 0
558 inline void SetThreadPriority(int nPriority)
560 // It's unclear if it's even possible to change thread priorities on Linux,
561 // but we really and truly need it for the generation threads.
563 setpriority(PRIO_THREAD, 0, nPriority);
565 setpriority(PRIO_PROCESS, 0, nPriority);
569 inline void ExitThread(size_t nExitCode)
571 pthread_exit((void*)nExitCode);
575 void RenameThread(const char* name);
577 inline uint32_t ByteReverse(uint32_t value)
579 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
580 return (value<<16) | (value>>16);