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>
31 #if defined(__USE_MINGW_ANSI_STDIO)
32 #undef __USE_MINGW_ANSI_STDIO // This constant forces MinGW to conduct stupid behavior
36 #include "netbase.h" // for AddTimeData
38 static const int32_t nOneHour = 60 * 60;
39 static const int32_t nOneDay = 24 * 60 * 60;
40 static const int64_t nOneWeek = 7 * 24 * 60 * 60;
42 static const int64_t COIN = 1000000;
43 static const int64_t CENT = 10000;
45 #define BEGIN(a) ((char*)&(a))
46 #define END(a) ((char*)&((&(a))[1]))
47 #define UBEGIN(a) ((unsigned char*)&(a))
48 #define UEND(a) ((unsigned char*)&((&(a))[1]))
50 #ifndef THROW_WITH_STACKTRACE
51 #define THROW_WITH_STACKTRACE(exception) \
59 #if defined(_MSC_VER) || defined(__MSVCRT__)
60 /* Silence compiler warnings on Windows
61 related to MinGWs inttypes.h */
72 /* Format characters for (s)size_t and ptrdiff_t */
73 #if defined(_MSC_VER) || defined(__MSVCRT__)
74 /* (s)size_t and ptrdiff_t have the same size specifier in MSVC:
75 http://msdn.microsoft.com/en-us/library/tcxf1dw6%28v=vs.100%29.aspx
83 #else /* C99 standard */
92 // Align by increasing pointer, must have extra space at end of buffer
93 template <size_t nBytes, typename T>
102 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
107 #define MSG_NOSIGNAL 0
108 #define MSG_DONTWAIT 0
115 #define MAX_PATH 1024
116 inline void Sleep(int64_t 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 /* This GNU C extension enables the compiler to check the format string against the parameters provided.
125 * X is the number of the "format string" parameter, and Y is the number of the first variadic parameter.
126 * Parameters count from 1.
129 #define ATTR_WARN_PRINTF(X,Y) __attribute__((format(printf,X,Y)))
131 #define ATTR_WARN_PRINTF(X,Y)
141 extern std::map<std::string, std::string> mapArgs;
142 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
144 extern bool fDebugNet;
145 extern bool fPrintToConsole;
146 extern bool fPrintToDebugger;
147 extern bool fRequestShutdown;
148 extern bool fShutdown;
151 extern bool fCommandLine;
152 extern std::string strMiscWarning;
153 extern bool fTestNet;
154 extern bool fNoListen;
155 extern bool fLogTimestamps;
156 extern bool fReopenDebugLog;
159 void RandAddSeedPerfmon();
160 int ATTR_WARN_PRINTF(1,2) OutputDebugStringF(const char* pszFormat, ...);
163 Rationale for the real_strprintf / strprintf construction:
164 It is not allowed to use va_start with a pass-by-reference argument.
165 (C++ standard, 18.7, paragraph 3). Use a dummy argument to work around this, and use a
166 macro to keep similar semantics.
169 /** Overload strprintf for char*, so that GCC format type warnings can be given */
170 std::string ATTR_WARN_PRINTF(1,3) real_strprintf(const char *format, int dummy, ...);
171 /** Overload strprintf for std::string, to be able to use it with _ (translation).
172 * This will not support GCC format type warnings (-Wformat) so be careful.
174 std::string real_strprintf(const std::string &format, int dummy, ...);
175 #define strprintf(format, ...) real_strprintf(format, 0, __VA_ARGS__)
176 std::string vstrprintf(const char *format, va_list ap);
178 bool ATTR_WARN_PRINTF(1,2) error(const char *format, ...);
180 /* Redefine printf so that it directs output to debug.log
182 * Do this *after* defining the other printf-like functions, because otherwise the
183 * __attribute__((format(printf,X,Y))) gets expanded to __attribute__((format(OutputDebugStringF,X,Y)))
184 * which confuses gcc.
186 #define printf OutputDebugStringF
188 void PrintException(std::exception* pex, const char* pszThread);
189 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
190 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
191 std::string FormatMoney(int64_t n, bool fPlus=false);
192 bool ParseMoney(const std::string& str, int64_t& nRet);
193 bool ParseMoney(const char* pszIn, int64_t& nRet);
194 std::vector<uint8_t> ParseHex(const char *str);
195 inline std::vector<uint8_t> ParseHex(const std::string& str) { return ParseHex(str.c_str()); }
196 bool IsHex(const std::string& str);
197 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
198 std::string DecodeBase64(const std::string& str);
199 std::string EncodeBase64(const unsigned char* pch, size_t len);
200 std::string EncodeBase64(const std::string& str);
201 std::vector<unsigned char> DecodeBase32(const char* p, bool* pfInvalid = NULL);
202 std::string DecodeBase32(const std::string& str);
203 std::string EncodeBase32(const unsigned char* pch, size_t len);
204 std::string EncodeBase32(const std::string& str);
205 std::string EncodeDumpTime(int64_t nTime);
206 int64_t DecodeDumpTime(const std::string& s);
207 std::string EncodeDumpString(const std::string &str);
208 std::string DecodeDumpString(const std::string &str);
209 void ParseParameters(int argc, const char*const argv[]);
210 bool WildcardMatch(const char* psz, const char* mask);
211 bool WildcardMatch(const std::string& str, const std::string& mask);
212 void FileCommit(FILE *fileout);
213 int GetFilesize(FILE* file);
214 bool RenameOver(boost::filesystem::path src, boost::filesystem::path dest);
215 boost::filesystem::path GetDefaultDataDir();
216 const boost::filesystem::path &GetDataDir(bool fNetSpecific = true);
217 boost::filesystem::path GetConfigFile();
218 boost::filesystem::path GetPidFile();
220 void CreatePidFile(const boost::filesystem::path &path, pid_t pid);
222 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
224 boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
226 void ShrinkDebugFile();
227 int GetRandInt(int nMax);
228 uint64_t GetRand(uint64_t nMax);
229 uint256 GetRandHash();
230 void FillRand(uint8_t *buffer, size_t nCount);
232 int64_t GetTimeMillis();
233 int64_t GetTimeMicros();
235 int64_t GetAdjustedTime();
236 int64_t GetTimeOffset();
237 int64_t GetNodesOffset();
238 std::string FormatFullVersion();
239 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
240 void AddTimeData(const CNetAddr& ip, int64_t nTime);
241 void runCommand(std::string strCommand);
247 inline std::string i64tostr(int64_t n)
249 return strprintf("%" PRId64, n);
252 inline int64_t strtoll(const char* psz)
254 return strtoll(psz, NULL, 10);
257 inline int64_t strtoll(const std::string& str)
259 return strtoll(str.c_str(), NULL, 10);
262 inline int32_t strtol(const char* psz)
264 return strtol(psz, NULL, 10);
267 inline int32_t strtol(const std::string& str)
269 return strtol(str.c_str(), NULL, 10);
272 inline uint32_t strtoul(const char* psz)
274 return strtoul(psz, NULL, 10);
277 inline uint32_t strtoul(const std::string& str)
279 return strtoul(str.c_str(), NULL, 10);
282 inline int atoi(const std::string& str)
284 return atoi(str.c_str());
287 inline int roundint(double d)
289 return (int)(d > 0 ? d + 0.5 : d - 0.5);
292 inline int64_t roundint64(double d)
294 return (int64_t)(d > 0 ? d + 0.5 : d - 0.5);
297 inline std::string leftTrim(std::string src, char chr)
299 std::string::size_type pos = src.find_first_not_of(chr, 0);
308 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
311 static const char hexmap[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
312 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
313 rv.reserve((itend-itbegin)*3);
314 for(T it = itbegin; it < itend; ++it)
316 unsigned char val = (unsigned char)(*it);
317 if(fSpaces && it != itbegin)
319 rv.push_back(hexmap[val>>4]);
320 rv.push_back(hexmap[val&15]);
326 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
328 return HexStr(vch.begin(), vch.end(), fSpaces);
332 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
334 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
337 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
339 printf(pszFormat, HexStr(vch, fSpaces).c_str());
342 inline int64_t GetPerformanceCounter()
344 int64_t nCounter = 0;
346 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
349 gettimeofday(&t, NULL);
350 nCounter = (int64_t) t.tv_sec * 1000000 + t.tv_usec;
355 inline int64_t GetTimeMillis()
357 return std::chrono::duration_cast<std::chrono::milliseconds>(std::chrono::system_clock::now().time_since_epoch()).count();
360 inline int64_t GetTimeMicros()
362 return std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::system_clock::now().time_since_epoch()).count();
365 std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime);
367 static const std::string strTimestampFormat = "%Y-%m-%d %H:%M:%S UTC";
368 inline std::string DateTimeStrFormat(int64_t nTime)
370 return DateTimeStrFormat(strTimestampFormat.c_str(), nTime);
375 void skipspaces(T& it)
381 inline bool IsSwitchChar(char c)
384 return c == '-' || c == '/';
391 * Return string argument or default value
393 * @param strArg Argument to get (e.g. "-foo")
394 * @param default (e.g. "1")
395 * @return command-line argument or default value
397 std::string GetArg(const std::string& strArg, const std::string& strDefault);
400 * Return 64-bit integer argument or default value
402 * @param strArg Argument to get (e.g. "-foo")
403 * @param default (e.g. 1)
404 * @return command-line argument (0 if invalid number) or default value
406 int64_t GetArg(const std::string& strArg, int64_t nDefault);
409 * Return 32-bit integer argument or default value
411 * @param strArg Argument to get (e.g. "-foo")
412 * @param default (e.g. 1)
413 * @return command-line argument (0 if invalid number) or default value
415 int32_t GetArgInt(const std::string& strArg, int32_t nDefault);
418 * Return 32-bit unsigned integer argument or default value
420 * @param strArg Argument to get (e.g. "-foo")
421 * @param default (e.g. 1)
422 * @return command-line argument (0 if invalid number) or default value
424 uint32_t GetArgUInt(const std::string& strArg, uint32_t nDefault);
427 * Return boolean argument or default value
429 * @param strArg Argument to get (e.g. "-foo")
430 * @param default (true or false)
431 * @return command-line argument or default value
433 bool GetBoolArg(const std::string& strArg, bool fDefault=false);
436 * Set an argument if it doesn't already have a value
438 * @param strArg Argument to set (e.g. "-foo")
439 * @param strValue Value (e.g. "1")
440 * @return true if argument gets set, false if it already had a value
442 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
445 * Set a boolean argument if it doesn't already have a value
447 * @param strArg Argument to set (e.g. "-foo")
448 * @param fValue Value (e.g. false)
449 * @return true if argument gets set, false if it already had a value
451 bool SoftSetBoolArg(const std::string& strArg, bool fValue);
454 * Timing-attack-resistant comparison.
455 * Takes time proportional to length
458 template <typename T>
459 bool TimingResistantEqual(const T& a, const T& b)
461 if (b.size() == 0) return a.size() == 0;
462 size_t accumulator = a.size() ^ b.size();
463 for (size_t i = 0; i < a.size(); i++)
464 accumulator |= a[i] ^ b[i%b.size()];
465 return accumulator == 0;
468 /** Median filter over a stream of values.
469 * Returns the median of the last N numbers
471 template <typename T> class CMedianFilter
474 std::vector<T> vValues;
475 std::vector<T> vSorted;
478 CMedianFilter(unsigned int size, T initial_value):
481 vValues.reserve(size);
482 vValues.push_back(initial_value);
488 if(vValues.size() == nSize)
490 vValues.erase(vValues.begin());
492 vValues.push_back(value);
494 vSorted.resize(vValues.size());
495 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
496 std::sort(vSorted.begin(), vSorted.end());
501 size_t size = vSorted.size();
503 if(size & 1) // Odd number of elements
505 return vSorted[size/2];
507 else // Even number of elements
509 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
515 return static_cast<int>(vValues.size());
518 std::vector<T> sorted () const
524 bool NewThread(void(*pfn)(void*), void* parg);
527 inline void SetThreadPriority(int nPriority)
529 SetThreadPriority(GetCurrentThread(), nPriority);
533 #define THREAD_PRIORITY_LOWEST PRIO_MAX
534 #define THREAD_PRIORITY_BELOW_NORMAL 2
535 #define THREAD_PRIORITY_NORMAL 0
536 #define THREAD_PRIORITY_ABOVE_NORMAL 0
538 inline void SetThreadPriority(int nPriority)
540 // It's unclear if it's even possible to change thread priorities on Linux,
541 // but we really and truly need it for the generation threads.
543 setpriority(PRIO_THREAD, 0, nPriority);
545 setpriority(PRIO_PROCESS, 0, nPriority);
549 inline void ExitThread(size_t nExitCode)
551 pthread_exit((void*)nExitCode);
555 void RenameThread(const char* name);
557 inline uint32_t ByteReverse(uint32_t value)
559 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
560 return (value<<16) | (value>>16);