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>
22 #include <boost/thread.hpp>
23 #include <boost/filesystem.hpp>
24 #include <boost/filesystem/path.hpp>
25 #include <boost/date_time/gregorian/gregorian_types.hpp>
26 #include <boost/date_time/posix_time/posix_time_types.hpp>
31 #include "netbase.h" // for AddTimeData
34 static const int64_t COIN = 1000000;
35 static const int64_t CENT = 10000;
37 #define BEGIN(a) ((char*)&(a))
38 #define END(a) ((char*)&((&(a))[1]))
39 #define UBEGIN(a) ((unsigned char*)&(a))
40 #define UEND(a) ((unsigned char*)&((&(a))[1]))
41 #define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
43 #define UVOIDBEGIN(a) ((void*)&(a))
44 #define CVOIDBEGIN(a) ((const void*)&(a))
45 #define UINTBEGIN(a) ((uint32_t*)&(a))
46 #define CUINTBEGIN(a) ((const uint32_t*)&(a))
48 #ifndef THROW_WITH_STACKTRACE
49 #define THROW_WITH_STACKTRACE(exception) \
58 /* Format characters for (s)size_t and ptrdiff_t */
59 #if defined(_MSC_VER) || defined(__MSVCRT__)
60 /* (s)size_t and ptrdiff_t have the same size specifier in MSVC:
61 http://msdn.microsoft.com/en-us/library/tcxf1dw6%28v=vs.100%29.aspx
69 #else /* C99 standard */
78 // This is needed because the foreach macro can't get over the comma in pair<t1, t2>
79 #define PAIRTYPE(t1, t2) std::pair<t1, t2>
81 // Align by increasing pointer, must have extra space at end of buffer
82 template <size_t nBytes, typename T>
91 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
96 #define MSG_NOSIGNAL 0
97 #define MSG_DONTWAIT 0
104 #define MAX_PATH 1024
105 inline void Sleep(int64_t n)
107 /*Boost has a year 2038 problem— if the request sleep time is past epoch+2^31 seconds the sleep returns instantly.
108 So we clamp our sleeps here to 10 years and hope that boost is fixed by 2028.*/
109 boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n>315576000000LL?315576000000LL:n));
113 /* This GNU C extension enables the compiler to check the format string against the parameters provided.
114 * X is the number of the "format string" parameter, and Y is the number of the first variadic parameter.
115 * Parameters count from 1.
118 #define ATTR_WARN_PRINTF(X,Y) __attribute__((format(printf,X,Y)))
120 #define ATTR_WARN_PRINTF(X,Y)
130 extern std::map<std::string, std::string> mapArgs;
131 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
133 extern bool fDebugNet;
134 extern bool fPrintToConsole;
135 extern bool fPrintToDebugger;
136 extern bool fRequestShutdown;
137 extern bool fShutdown;
140 extern bool fCommandLine;
141 extern std::string strMiscWarning;
142 extern bool fTestNet;
143 extern bool fNoListen;
144 extern bool fLogTimestamps;
145 extern bool fReopenDebugLog;
148 void RandAddSeedPerfmon();
149 int ATTR_WARN_PRINTF(1,2) OutputDebugStringF(const char* pszFormat, ...);
152 Rationale for the real_strprintf / strprintf construction:
153 It is not allowed to use va_start with a pass-by-reference argument.
154 (C++ standard, 18.7, paragraph 3). Use a dummy argument to work around this, and use a
155 macro to keep similar semantics.
158 /** Overload strprintf for char*, so that GCC format type warnings can be given */
159 std::string ATTR_WARN_PRINTF(1,3) real_strprintf(const char *format, int dummy, ...);
160 /** Overload strprintf for std::string, to be able to use it with _ (translation).
161 * This will not support GCC format type warnings (-Wformat) so be careful.
163 std::string real_strprintf(const std::string &format, int dummy, ...);
164 #define strprintf(format, ...) real_strprintf(format, 0, __VA_ARGS__)
165 std::string vstrprintf(const char *format, va_list ap);
167 bool ATTR_WARN_PRINTF(1,2) error(const char *format, ...);
169 /* Redefine printf so that it directs output to debug.log
171 * Do this *after* defining the other printf-like functions, because otherwise the
172 * __attribute__((format(printf,X,Y))) gets expanded to __attribute__((format(OutputDebugStringF,X,Y)))
173 * which confuses gcc.
175 #define printf OutputDebugStringF
177 void LogException(std::exception* pex, const char* pszThread);
178 void PrintException(std::exception* pex, const char* pszThread);
179 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
180 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
181 std::string FormatMoney(int64_t n, bool fPlus=false);
182 bool ParseMoney(const std::string& str, int64_t& nRet);
183 bool ParseMoney(const char* pszIn, int64_t& nRet);
184 std::vector<unsigned char> ParseHex(const char* psz);
185 std::vector<unsigned char> ParseHex(const std::string& str);
186 bool IsHex(const std::string& str);
187 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
188 std::string DecodeBase64(const std::string& str);
189 std::string EncodeBase64(const unsigned char* pch, size_t len);
190 std::string EncodeBase64(const std::string& str);
191 std::vector<unsigned char> DecodeBase32(const char* p, bool* pfInvalid = NULL);
192 std::string DecodeBase32(const std::string& str);
193 std::string EncodeBase32(const unsigned char* pch, size_t len);
194 std::string EncodeBase32(const std::string& str);
195 std::string EncodeDumpTime(int64_t nTime);
196 int64_t DecodeDumpTime(const std::string& s);
197 std::string EncodeDumpString(const std::string &str);
198 std::string DecodeDumpString(const std::string &str);
199 void ParseParameters(int argc, const char*const argv[]);
200 bool WildcardMatch(const char* psz, const char* mask);
201 bool WildcardMatch(const std::string& str, const std::string& mask);
202 void FileCommit(FILE *fileout);
203 int GetFilesize(FILE* file);
204 bool RenameOver(boost::filesystem::path src, boost::filesystem::path dest);
205 boost::filesystem::path GetDefaultDataDir();
206 const boost::filesystem::path &GetDataDir(bool fNetSpecific = true);
207 boost::filesystem::path GetConfigFile();
208 boost::filesystem::path GetPidFile();
210 void CreatePidFile(const boost::filesystem::path &path, pid_t pid);
212 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
214 boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
216 void ShrinkDebugFile();
217 int GetRandInt(int nMax);
218 uint64_t GetRand(uint64_t nMax);
219 uint256 GetRandHash();
221 void SetMockTime(int64_t nMockTimeIn);
222 int64_t GetAdjustedTime();
223 int64_t GetTimeOffset();
224 std::string FormatFullVersion();
225 std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
226 void AddTimeData(const CNetAddr& ip, int64_t nTime);
227 void runCommand(std::string strCommand);
237 inline std::string i64tostr(int64_t n)
239 return strprintf("%" PRId64, n);
242 inline std::string itostr(int n)
244 return strprintf("%d", n);
247 inline int64_t atoi64(const char* psz)
252 return strtoll(psz, NULL, 10);
256 inline int64_t atoi64(const std::string& str)
259 return _atoi64(str.c_str());
261 return strtoll(str.c_str(), NULL, 10);
265 inline int atoi(const std::string& str)
267 return atoi(str.c_str());
270 inline int roundint(double d)
272 return (int)(d > 0 ? d + 0.5 : d - 0.5);
275 inline int64_t roundint64(double d)
277 return (int64_t)(d > 0 ? d + 0.5 : d - 0.5);
280 inline int64_t abs64(int64_t n)
282 return (n >= 0 ? n : -n);
285 inline std::string leftTrim(std::string src, char chr)
287 std::string::size_type pos = src.find_first_not_of(chr, 0);
296 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
299 static const char hexmap[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
300 '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
301 rv.reserve((itend-itbegin)*3);
302 for(T it = itbegin; it < itend; ++it)
304 unsigned char val = (unsigned char)(*it);
305 if(fSpaces && it != itbegin)
307 rv.push_back(hexmap[val>>4]);
308 rv.push_back(hexmap[val&15]);
314 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
316 return HexStr(vch.begin(), vch.end(), fSpaces);
320 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
322 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
325 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
327 printf(pszFormat, HexStr(vch, fSpaces).c_str());
330 inline int64_t GetPerformanceCounter()
332 int64_t nCounter = 0;
334 QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
337 gettimeofday(&t, NULL);
338 nCounter = (int64_t) t.tv_sec * 1000000 + t.tv_usec;
343 inline int64_t GetTimeMillis()
345 return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
346 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
349 inline std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime)
352 struct tm* ptmTime = gmtime(&n);
354 strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
358 static const std::string strTimestampFormat = "%Y-%m-%d %H:%M:%S UTC";
359 inline std::string DateTimeStrFormat(int64_t nTime)
361 return DateTimeStrFormat(strTimestampFormat.c_str(), nTime);
366 void skipspaces(T& it)
372 inline bool IsSwitchChar(char c)
375 return c == '-' || c == '/';
382 * Return string argument or default value
384 * @param strArg Argument to get (e.g. "-foo")
385 * @param default (e.g. "1")
386 * @return command-line argument or default value
388 std::string GetArg(const std::string& strArg, const std::string& strDefault);
391 * Return integer argument or default value
393 * @param strArg Argument to get (e.g. "-foo")
394 * @param default (e.g. 1)
395 * @return command-line argument (0 if invalid number) or default value
397 int64_t GetArg(const std::string& strArg, int64_t nDefault);
400 * Return boolean argument or default value
402 * @param strArg Argument to get (e.g. "-foo")
403 * @param default (true or false)
404 * @return command-line argument or default value
406 bool GetBoolArg(const std::string& strArg, bool fDefault=false);
409 * Set an argument if it doesn't already have a value
411 * @param strArg Argument to set (e.g. "-foo")
412 * @param strValue Value (e.g. "1")
413 * @return true if argument gets set, false if it already had a value
415 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
418 * Set a boolean argument if it doesn't already have a value
420 * @param strArg Argument to set (e.g. "-foo")
421 * @param fValue Value (e.g. false)
422 * @return true if argument gets set, false if it already had a value
424 bool SoftSetBoolArg(const std::string& strArg, bool fValue);
427 * Timing-attack-resistant comparison.
428 * Takes time proportional to length
431 template <typename T>
432 bool TimingResistantEqual(const T& a, const T& b)
434 if (b.size() == 0) return a.size() == 0;
435 size_t accumulator = a.size() ^ b.size();
436 for (size_t i = 0; i < a.size(); i++)
437 accumulator |= a[i] ^ b[i%b.size()];
438 return accumulator == 0;
441 /** Median filter over a stream of values.
442 * Returns the median of the last N numbers
444 template <typename T> class CMedianFilter
447 std::vector<T> vValues;
448 std::vector<T> vSorted;
451 CMedianFilter(unsigned int size, T initial_value):
454 vValues.reserve(size);
455 vValues.push_back(initial_value);
461 if(vValues.size() == nSize)
463 vValues.erase(vValues.begin());
465 vValues.push_back(value);
467 vSorted.resize(vValues.size());
468 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
469 std::sort(vSorted.begin(), vSorted.end());
474 int size = vSorted.size();
476 if(size & 1) // Odd number of elements
478 return vSorted[size/2];
480 else // Even number of elements
482 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
488 return vValues.size();
491 std::vector<T> sorted () const
497 bool NewThread(void(*pfn)(void*), void* parg);
500 inline void SetThreadPriority(int nPriority)
502 SetThreadPriority(GetCurrentThread(), nPriority);
506 #define THREAD_PRIORITY_LOWEST PRIO_MAX
507 #define THREAD_PRIORITY_BELOW_NORMAL 2
508 #define THREAD_PRIORITY_NORMAL 0
509 #define THREAD_PRIORITY_ABOVE_NORMAL 0
511 inline void SetThreadPriority(int nPriority)
513 // It's unclear if it's even possible to change thread priorities on Linux,
514 // but we really and truly need it for the generation threads.
516 setpriority(PRIO_THREAD, 0, nPriority);
518 setpriority(PRIO_PROCESS, 0, nPriority);
522 inline void ExitThread(size_t nExitCode)
524 pthread_exit((void*)nExitCode);
528 void RenameThread(const char* name);
530 inline uint32_t ByteReverse(uint32_t value)
532 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
533 return (value<<16) | (value>>16);