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]))
52 #define UVOIDBEGIN(a) ((void*)&(a))
53 #define CVOIDBEGIN(a) ((const void*)&(a))
54 #define UINTBEGIN(a) ((uint32_t*)&(a))
55 #define CUINTBEGIN(a) ((const uint32_t*)&(a))
57 #ifndef THROW_WITH_STACKTRACE
58 #define THROW_WITH_STACKTRACE(exception) \
66 #if defined(_MSC_VER) || defined(__MSVCRT__)
67 /* Silence compiler warnings on Windows
68 related to MinGWs inttypes.h */
79 /* Format characters for (s)size_t and ptrdiff_t */
80 #if defined(_MSC_VER) || defined(__MSVCRT__)
81 /* (s)size_t and ptrdiff_t have the same size specifier in MSVC:
82 http://msdn.microsoft.com/en-us/library/tcxf1dw6%28v=vs.100%29.aspx
90 #else /* C99 standard */
99 // Align by increasing pointer, must have extra space at end of buffer
100 template <size_t nBytes, typename T>
109 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
114 #define MSG_NOSIGNAL 0
115 #define MSG_DONTWAIT 0
122 #define MAX_PATH 1024
123 inline void Sleep(int64_t n)
125 this_thread::sleep_for(std::chrono::milliseconds(n));
129 /* This GNU C extension enables the compiler to check the format string against the parameters provided.
130 * X is the number of the "format string" parameter, and Y is the number of the first variadic parameter.
131 * Parameters count from 1.
134 #define ATTR_WARN_PRINTF(X,Y) __attribute__((format(printf,X,Y)))
136 #define ATTR_WARN_PRINTF(X,Y)
146 extern std::map<std::string, std::string> mapArgs;
147 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
149 extern bool fDebugNet;
150 extern bool fPrintToConsole;
151 extern bool fPrintToDebugger;
152 extern bool fRequestShutdown;
153 extern bool fShutdown;
156 extern bool fCommandLine;
157 extern std::string strMiscWarning;
158 extern bool fTestNet;
159 extern bool fNoListen;
160 extern bool fLogTimestamps;
161 extern bool fReopenDebugLog;
164 void RandAddSeedPerfmon();
165 int ATTR_WARN_PRINTF(1,2) OutputDebugStringF(const char* pszFormat, ...);
168 Rationale for the real_strprintf / strprintf construction:
169 It is not allowed to use va_start with a pass-by-reference argument.
170 (C++ standard, 18.7, paragraph 3). Use a dummy argument to work around this, and use a
171 macro to keep similar semantics.
174 /** Overload strprintf for char*, so that GCC format type warnings can be given */
175 std::string ATTR_WARN_PRINTF(1,3) real_strprintf(const char *format, int dummy, ...);
176 /** Overload strprintf for std::string, to be able to use it with _ (translation).
177 * This will not support GCC format type warnings (-Wformat) so be careful.
179 std::string real_strprintf(const std::string &format, int dummy, ...);
180 #define strprintf(format, ...) real_strprintf(format, 0, __VA_ARGS__)
181 std::string vstrprintf(const char *format, va_list ap);
183 bool ATTR_WARN_PRINTF(1,2) error(const char *format, ...);
185 /* Redefine printf so that it directs output to debug.log
187 * Do this *after* defining the other printf-like functions, because otherwise the
188 * __attribute__((format(printf,X,Y))) gets expanded to __attribute__((format(OutputDebugStringF,X,Y)))
189 * which confuses gcc.
191 #define printf OutputDebugStringF
193 void LogException(std::exception* pex, const char* pszThread);
194 void PrintException(std::exception* pex, const char* pszThread);
195 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
196 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
197 std::string FormatMoney(int64_t n, bool fPlus=false);
198 bool ParseMoney(const std::string& str, int64_t& nRet);
199 bool ParseMoney(const char* pszIn, int64_t& nRet);
200 std::vector<uint8_t> ParseHex(const char *str);
201 inline std::vector<uint8_t> ParseHex(const std::string& str) { return ParseHex(str.c_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();
236 void FillRand(uint8_t *buffer, size_t nCount);
238 int64_t GetTimeMillis();
239 int64_t GetTimeMicros();
241 int64_t GetAdjustedTime();
242 int64_t GetTimeOffset();
243 int64_t GetNodesOffset();
244 std::string FormatFullVersion();
245 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
246 void AddTimeData(const CNetAddr& ip, int64_t nTime);
247 void runCommand(std::string strCommand);
253 inline std::string i64tostr(int64_t n)
255 return strprintf("%" PRId64, n);
258 inline int64_t strtoll(const char* psz)
260 return strtoll(psz, NULL, 10);
263 inline int64_t strtoll(const std::string& str)
265 return strtoll(str.c_str(), NULL, 10);
268 inline int32_t strtol(const char* psz)
270 return strtol(psz, NULL, 10);
273 inline int32_t strtol(const std::string& str)
275 return strtol(str.c_str(), NULL, 10);
278 inline uint32_t strtoul(const char* psz)
280 return strtoul(psz, NULL, 10);
283 inline uint32_t strtoul(const std::string& str)
285 return strtoul(str.c_str(), NULL, 10);
288 inline int atoi(const std::string& str)
290 return atoi(str.c_str());
293 inline int roundint(double d)
295 return (int)(d > 0 ? d + 0.5 : d - 0.5);
298 inline int64_t roundint64(double d)
300 return (int64_t)(d > 0 ? d + 0.5 : d - 0.5);
303 inline std::string leftTrim(std::string src, char chr)
305 std::string::size_type pos = src.find_first_not_of(chr, 0);
314 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
317 static const char hexmap[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
318 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
319 rv.reserve((itend-itbegin)*3);
320 for(T it = itbegin; it < itend; ++it)
322 unsigned char val = (unsigned char)(*it);
323 if(fSpaces && it != itbegin)
325 rv.push_back(hexmap[val>>4]);
326 rv.push_back(hexmap[val&15]);
332 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
334 return HexStr(vch.begin(), vch.end(), fSpaces);
338 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
340 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
343 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
345 printf(pszFormat, HexStr(vch, fSpaces).c_str());
348 inline int64_t GetPerformanceCounter()
350 int64_t nCounter = 0;
352 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
355 gettimeofday(&t, NULL);
356 nCounter = (int64_t) t.tv_sec * 1000000 + t.tv_usec;
361 inline int64_t GetTimeMillis()
363 return (boost::posix_time::microsec_clock::universal_time() -
364 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
367 inline int64_t GetTimeMicros()
369 return (boost::posix_time::microsec_clock::universal_time() -
370 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_microseconds();
373 std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime);
375 static const std::string strTimestampFormat = "%Y-%m-%d %H:%M:%S UTC";
376 inline std::string DateTimeStrFormat(int64_t nTime)
378 return DateTimeStrFormat(strTimestampFormat.c_str(), nTime);
383 void skipspaces(T& it)
389 inline bool IsSwitchChar(char c)
392 return c == '-' || c == '/';
399 * Return string argument or default value
401 * @param strArg Argument to get (e.g. "-foo")
402 * @param default (e.g. "1")
403 * @return command-line argument or default value
405 std::string GetArg(const std::string& strArg, const std::string& strDefault);
408 * Return 64-bit integer argument or default value
410 * @param strArg Argument to get (e.g. "-foo")
411 * @param default (e.g. 1)
412 * @return command-line argument (0 if invalid number) or default value
414 int64_t GetArg(const std::string& strArg, int64_t nDefault);
417 * Return 32-bit integer argument or default value
419 * @param strArg Argument to get (e.g. "-foo")
420 * @param default (e.g. 1)
421 * @return command-line argument (0 if invalid number) or default value
423 int32_t GetArgInt(const std::string& strArg, int32_t nDefault);
426 * Return 32-bit unsigned integer argument or default value
428 * @param strArg Argument to get (e.g. "-foo")
429 * @param default (e.g. 1)
430 * @return command-line argument (0 if invalid number) or default value
432 uint32_t GetArgUInt(const std::string& strArg, uint32_t nDefault);
435 * Return boolean argument or default value
437 * @param strArg Argument to get (e.g. "-foo")
438 * @param default (true or false)
439 * @return command-line argument or default value
441 bool GetBoolArg(const std::string& strArg, bool fDefault=false);
444 * Set an argument if it doesn't already have a value
446 * @param strArg Argument to set (e.g. "-foo")
447 * @param strValue Value (e.g. "1")
448 * @return true if argument gets set, false if it already had a value
450 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
453 * Set a boolean argument if it doesn't already have a value
455 * @param strArg Argument to set (e.g. "-foo")
456 * @param fValue Value (e.g. false)
457 * @return true if argument gets set, false if it already had a value
459 bool SoftSetBoolArg(const std::string& strArg, bool fValue);
462 * Timing-attack-resistant comparison.
463 * Takes time proportional to length
466 template <typename T>
467 bool TimingResistantEqual(const T& a, const T& b)
469 if (b.size() == 0) return a.size() == 0;
470 size_t accumulator = a.size() ^ b.size();
471 for (size_t i = 0; i < a.size(); i++)
472 accumulator |= a[i] ^ b[i%b.size()];
473 return accumulator == 0;
476 /** Median filter over a stream of values.
477 * Returns the median of the last N numbers
479 template <typename T> class CMedianFilter
482 std::vector<T> vValues;
483 std::vector<T> vSorted;
486 CMedianFilter(unsigned int size, T initial_value):
489 vValues.reserve(size);
490 vValues.push_back(initial_value);
496 if(vValues.size() == nSize)
498 vValues.erase(vValues.begin());
500 vValues.push_back(value);
502 vSorted.resize(vValues.size());
503 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
504 std::sort(vSorted.begin(), vSorted.end());
509 size_t size = vSorted.size();
511 if(size & 1) // Odd number of elements
513 return vSorted[size/2];
515 else // Even number of elements
517 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
523 return static_cast<int>(vValues.size());
526 std::vector<T> sorted () const
532 bool NewThread(void(*pfn)(void*), void* parg);
535 inline void SetThreadPriority(int nPriority)
537 SetThreadPriority(GetCurrentThread(), nPriority);
541 #define THREAD_PRIORITY_LOWEST PRIO_MAX
542 #define THREAD_PRIORITY_BELOW_NORMAL 2
543 #define THREAD_PRIORITY_NORMAL 0
544 #define THREAD_PRIORITY_ABOVE_NORMAL 0
546 inline void SetThreadPriority(int nPriority)
548 // It's unclear if it's even possible to change thread priorities on Linux,
549 // but we really and truly need it for the generation threads.
551 setpriority(PRIO_THREAD, 0, nPriority);
553 setpriority(PRIO_PROCESS, 0, nPriority);
557 inline void ExitThread(size_t nExitCode)
559 pthread_exit((void*)nExitCode);
563 void RenameThread(const char* name);
565 inline uint32_t ByteReverse(uint32_t value)
567 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
568 return (value<<16) | (value>>16);