src/util.h

   1 // Copyright (c) 2009-2010 Satoshi Nakamoto
   2 // Copyright (c) 2011 The Bitcoin developers
   3 // Distributed under the MIT/X11 software license, see the accompanying
   4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
   5 #ifndef BITCOIN_UTIL_H
   6 #define BITCOIN_UTIL_H
   7
   8 #include "uint256.h"
   9
  10 #ifndef WIN32
  11 #include <sys/types.h>
  12 #include <sys/time.h>
  13 #include <sys/resource.h>
  14 #endif
  15 #include <map>
  16 #include <vector>
  17 #include <string>
  18
  19 #include <boost/thread.hpp>
  20 #include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
  21 #include <boost/date_time/gregorian/gregorian_types.hpp>
  22 #include <boost/date_time/posix_time/posix_time_types.hpp>
  23
  24 #include <openssl/sha.h>
  25 #include <openssl/ripemd.h>
  26
  27
  28 #if defined(_MSC_VER) || defined(__BORLANDC__)
  29 typedef __int64  int64;
  30 typedef unsigned __int64  uint64;
  31 #else
  32 typedef long long  int64;
  33 typedef unsigned long long  uint64;
  34 #endif
  35 #if defined(_MSC_VER) && _MSC_VER < 1300
  36 #define for  if (false) ; else for
  37 #endif
  38 #ifndef _MSC_VER
  39 #define __forceinline  inline
  40 #endif
  41
  42 #define loop                for (;;)
  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
  49
  50 #ifdef snprintf
  51 #undef snprintf
  52 #endif
  53 #define snprintf my_snprintf
  54
  55 #ifndef PRI64d
  56 #if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MSVCRT__)
  57 #define PRI64d  "I64d"
  58 #define PRI64u  "I64u"
  59 #define PRI64x  "I64x"
  60 #else
  61 #define PRI64d  "lld"
  62 #define PRI64u  "llu"
  63 #define PRI64x  "llx"
  64 #endif
  65 #endif
  66
  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>
  69
  70 // Align by increasing pointer, must have extra space at end of buffer
  71 template <size_t nBytes, typename T>
  72 T* alignup(T* p)
  73 {
  74     union
  75     {
  76         T* ptr;
  77         size_t n;
  78     } u;
  79     u.ptr = p;
  80     u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
  81     return u.ptr;
  82 }
  83
  84 #ifdef WIN32
  85 #define MSG_NOSIGNAL        0
  86 #define MSG_DONTWAIT        0
  87 #ifndef UINT64_MAX
  88 #define UINT64_MAX          _UI64_MAX
  89 #define INT64_MAX           _I64_MAX
  90 #define INT64_MIN           _I64_MIN
  91 #endif
  92 #ifndef S_IRUSR
  93 #define S_IRUSR             0400
  94 #define S_IWUSR             0200
  95 #endif
  96 #define unlink              _unlink
  97 typedef int socklen_t;
  98 #else
  99 #define WSAGetLastError()   errno
 100 #define WSAEINVAL           EINVAL
 101 #define WSAEALREADY         EALREADY
 102 #define WSAEWOULDBLOCK      EWOULDBLOCK
 103 #define WSAEMSGSIZE         EMSGSIZE
 104 #define WSAEINTR            EINTR
 105 #define WSAEINPROGRESS      EINPROGRESS
 106 #define WSAEADDRINUSE       EADDRINUSE
 107 #define WSAENOTSOCK         EBADF
 108 #define INVALID_SOCKET      (SOCKET)(~0)
 109 #define SOCKET_ERROR        -1
 110 typedef u_int SOCKET;
 111 #define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d)
 112 #define strlwr(psz)         to_lower(psz)
 113 #define _strlwr(psz)        to_lower(psz)
 114 #define MAX_PATH            1024
 115 #define Beep(n1,n2)         (0)
 116 inline void Sleep(int64 n)
 117 {
 118     boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n));
 119 }
 120 #endif
 121
 122 inline int myclosesocket(SOCKET& hSocket)
 123 {
 124     if (hSocket == INVALID_SOCKET)
 125         return WSAENOTSOCK;
 126 #ifdef WIN32
 127     int ret = closesocket(hSocket);
 128 #else
 129     int ret = close(hSocket);
 130 #endif
 131     hSocket = INVALID_SOCKET;
 132     return ret;
 133 }
 134 #define closesocket(s)      myclosesocket(s)
 135 #if !defined(QT_GUI)
 136 inline const char* _(const char* psz)
 137 {
 138     return psz;
 139 }
 140 #endif
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150 extern std::map<std::string, std::string> mapArgs;
 151 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
 152 extern bool fDebug;
 153 extern bool fPrintToConsole;
 154 extern bool fPrintToDebugger;
 155 extern char pszSetDataDir[MAX_PATH];
 156 extern bool fRequestShutdown;
 157 extern bool fShutdown;
 158 extern bool fDaemon;
 159 extern bool fServer;
 160 extern bool fCommandLine;
 161 extern std::string strMiscWarning;
 162 extern bool fTestNet;
 163 extern bool fNoListen;
 164 extern bool fLogTimestamps;
 165
 166 void RandAddSeed();
 167 void RandAddSeedPerfmon();
 168 int OutputDebugStringF(const char* pszFormat, ...);
 169 int my_snprintf(char* buffer, size_t limit, const char* format, ...);
 170 std::string strprintf(const std::string &format, ...);
 171 bool error(const std::string &format, ...);
 172 void LogException(std::exception* pex, const char* pszThread);
 173 void PrintException(std::exception* pex, const char* pszThread);
 174 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
 175 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
 176 std::string FormatMoney(int64 n, bool fPlus=false);
 177 bool ParseMoney(const std::string& str, int64& nRet);
 178 bool ParseMoney(const char* pszIn, int64& nRet);
 179 std::vector<unsigned char> ParseHex(const char* psz);
 180 std::vector<unsigned char> ParseHex(const std::string& str);
 181 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
 182 std::string DecodeBase64(const std::string& str);
 183 std::string EncodeBase64(const unsigned char* pch, size_t len);
 184 std::string EncodeBase64(const std::string& str);
 185 void ParseParameters(int argc, char* argv[]);
 186 const char* wxGetTranslation(const char* psz);
 187 bool WildcardMatch(const char* psz, const char* mask);
 188 bool WildcardMatch(const std::string& str, const std::string& mask);
 189 int GetFilesize(FILE* file);
 190 void GetDataDir(char* pszDirRet);
 191 std::string GetConfigFile();
 192 std::string GetPidFile();
 193 void CreatePidFile(std::string pidFile, pid_t pid);
 194 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
 195 #ifdef WIN32
 196 std::string MyGetSpecialFolderPath(int nFolder, bool fCreate);
 197 #endif
 198 std::string GetDefaultDataDir();
 199 std::string GetDataDir();
 200 void ShrinkDebugFile();
 201 int GetRandInt(int nMax);
 202 uint64 GetRand(uint64 nMax);
 203 int64 GetTime();
 204 void SetMockTime(int64 nMockTimeIn);
 205 int64 GetAdjustedTime();
 206 void AddTimeData(unsigned int ip, int64 nTime);
 207 std::string FormatFullVersion();
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221 // Wrapper to automatically initialize mutex
 222 class CCriticalSection
 223 {
 224 protected:
 225     boost::interprocess::interprocess_recursive_mutex mutex;
 226 public:
 227     explicit CCriticalSection() { }
 228     ~CCriticalSection() { }
 229     void Enter(const char* pszName, const char* pszFile, int nLine);
 230     void Leave();
 231     bool TryEnter(const char* pszName, const char* pszFile, int nLine);
 232 };
 233
 234 // Automatically leave critical section when leaving block, needed for exception safety
 235 class CCriticalBlock
 236 {
 237 protected:
 238     CCriticalSection* pcs;
 239
 240 public:
 241     CCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
 242     {
 243         pcs = &csIn;
 244         pcs->Enter(pszName, pszFile, nLine);
 245     }
 246
 247     operator bool() const
 248     {
 249         return true;
 250     }
 251
 252     ~CCriticalBlock()
 253     {
 254         pcs->Leave();
 255     }
 256 };
 257
 258 #define CRITICAL_BLOCK(cs)     \
 259     if (CCriticalBlock criticalblock = CCriticalBlock(cs, #cs, __FILE__, __LINE__))
 260
 261 class CTryCriticalBlock
 262 {
 263 protected:
 264     CCriticalSection* pcs;
 265
 266 public:
 267     CTryCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
 268     {
 269         pcs = (csIn.TryEnter(pszName, pszFile, nLine) ? &csIn : NULL);
 270     }
 271
 272     operator bool() const
 273     {
 274         return Entered();
 275     }
 276
 277     ~CTryCriticalBlock()
 278     {
 279         if (pcs)
 280         {
 281             pcs->Leave();
 282         }
 283     }
 284     bool Entered() const { return pcs != NULL; }
 285 };
 286
 287 #define TRY_CRITICAL_BLOCK(cs)     \
 288     if (CTryCriticalBlock criticalblock = CTryCriticalBlock(cs, #cs, __FILE__, __LINE__))
 289
 290
 291
 292
 293
 294
 295 // This is exactly like std::string, but with a custom allocator.
 296 // (secure_allocator<> is defined in serialize.h)
 297 typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
 298
 299
 300
 301
 302
 303 inline std::string i64tostr(int64 n)
 304 {
 305     return strprintf("%"PRI64d, n);
 306 }
 307
 308 inline std::string itostr(int n)
 309 {
 310     return strprintf("%d", n);
 311 }
 312
 313 inline int64 atoi64(const char* psz)
 314 {
 315 #ifdef _MSC_VER
 316     return _atoi64(psz);
 317 #else
 318     return strtoll(psz, NULL, 10);
 319 #endif
 320 }
 321
 322 inline int64 atoi64(const std::string& str)
 323 {
 324 #ifdef _MSC_VER
 325     return _atoi64(str.c_str());
 326 #else
 327     return strtoll(str.c_str(), NULL, 10);
 328 #endif
 329 }
 330
 331 inline int atoi(const std::string& str)
 332 {
 333     return atoi(str.c_str());
 334 }
 335
 336 inline int roundint(double d)
 337 {
 338     return (int)(d > 0 ? d + 0.5 : d - 0.5);
 339 }
 340
 341 inline int64 roundint64(double d)
 342 {
 343     return (int64)(d > 0 ? d + 0.5 : d - 0.5);
 344 }
 345
 346 inline int64 abs64(int64 n)
 347 {
 348     return (n >= 0 ? n : -n);
 349 }
 350
 351 template<typename T>
 352 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
 353 {
 354     if (itbegin == itend)
 355         return "";
 356     const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
 357     const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
 358     std::string str;
 359     str.reserve((pend-pbegin) * (fSpaces ? 3 : 2));
 360     for (const unsigned char* p = pbegin; p != pend; p++)
 361         str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
 362     return str;
 363 }
 364
 365 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
 366 {
 367     return HexStr(vch.begin(), vch.end(), fSpaces);
 368 }
 369
 370 template<typename T>
 371 std::string HexNumStr(const T itbegin, const T itend, bool f0x=true)
 372 {
 373     if (itbegin == itend)
 374         return "";
 375     const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
 376     const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
 377     std::string str = (f0x ? "0x" : "");
 378     str.reserve(str.size() + (pend-pbegin) * 2);
 379     for (const unsigned char* p = pend-1; p >= pbegin; p--)
 380         str += strprintf("%02x", *p);
 381     return str;
 382 }
 383
 384 inline std::string HexNumStr(const std::vector<unsigned char>& vch, bool f0x=true)
 385 {
 386     return HexNumStr(vch.begin(), vch.end(), f0x);
 387 }
 388
 389 template<typename T>
 390 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
 391 {
 392     printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
 393 }
 394
 395 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
 396 {
 397     printf(pszFormat, HexStr(vch, fSpaces).c_str());
 398 }
 399
 400 inline int64 GetPerformanceCounter()
 401 {
 402     int64 nCounter = 0;
 403 #ifdef WIN32
 404     QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
 405 #else
 406     timeval t;
 407     gettimeofday(&t, NULL);
 408     nCounter = t.tv_sec * 1000000 + t.tv_usec;
 409 #endif
 410     return nCounter;
 411 }
 412
 413 inline int64 GetTimeMillis()
 414 {
 415     return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
 416             boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
 417 }
 418
 419 inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
 420 {
 421     time_t n = nTime;
 422     struct tm* ptmTime = gmtime(&n);
 423     char pszTime[200];
 424     strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
 425     return pszTime;
 426 }
 427
 428 template<typename T>
 429 void skipspaces(T& it)
 430 {
 431     while (isspace(*it))
 432         ++it;
 433 }
 434
 435 inline bool IsSwitchChar(char c)
 436 {
 437 #ifdef WIN32
 438     return c == '-' || c == '/';
 439 #else
 440     return c == '-';
 441 #endif
 442 }
 443
 444 inline std::string GetArg(const std::string& strArg, const std::string& strDefault)
 445 {
 446     if (mapArgs.count(strArg))
 447         return mapArgs[strArg];
 448     return strDefault;
 449 }
 450
 451 inline int64 GetArg(const std::string& strArg, int64 nDefault)
 452 {
 453     if (mapArgs.count(strArg))
 454         return atoi64(mapArgs[strArg]);
 455     return nDefault;
 456 }
 457
 458 inline bool GetBoolArg(const std::string& strArg)
 459 {
 460     if (mapArgs.count(strArg))
 461     {
 462         if (mapArgs[strArg].empty())
 463             return true;
 464         return (atoi(mapArgs[strArg]) != 0);
 465     }
 466     return false;
 467 }
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478 inline void heapchk()
 479 {
 480 #ifdef WIN32
 481     /// for debugging
 482     //if (_heapchk() != _HEAPOK)
 483     //    DebugBreak();
 484 #endif
 485 }
 486
 487 // Randomize the stack to help protect against buffer overrun exploits
 488 #define IMPLEMENT_RANDOMIZE_STACK(ThreadFn)     \
 489     {                                           \
 490         static char nLoops;                     \
 491         if (nLoops <= 0)                        \
 492             nLoops = GetRand(20) + 1;           \
 493         if (nLoops-- > 1)                       \
 494         {                                       \
 495             ThreadFn;                           \
 496             return;                             \
 497         }                                       \
 498     }
 499
 500 #define CATCH_PRINT_EXCEPTION(pszFn)     \
 501     catch (std::exception& e) {          \
 502         PrintException(&e, (pszFn));     \
 503     } catch (...) {                      \
 504         PrintException(NULL, (pszFn));   \
 505     }
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516 template<typename T1>
 517 inline uint256 Hash(const T1 pbegin, const T1 pend)
 518 {
 519     static unsigned char pblank[1];
 520     uint256 hash1;
 521     SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
 522     uint256 hash2;
 523     SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
 524     return hash2;
 525 }
 526
 527 template<typename T1, typename T2>
 528 inline uint256 Hash(const T1 p1begin, const T1 p1end,
 529                     const T2 p2begin, const T2 p2end)
 530 {
 531     static unsigned char pblank[1];
 532     uint256 hash1;
 533     SHA256_CTX ctx;
 534     SHA256_Init(&ctx);
 535     SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
 536     SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
 537     SHA256_Final((unsigned char*)&hash1, &ctx);
 538     uint256 hash2;
 539     SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
 540     return hash2;
 541 }
 542
 543 template<typename T1, typename T2, typename T3>
 544 inline uint256 Hash(const T1 p1begin, const T1 p1end,
 545                     const T2 p2begin, const T2 p2end,
 546                     const T3 p3begin, const T3 p3end)
 547 {
 548     static unsigned char pblank[1];
 549     uint256 hash1;
 550     SHA256_CTX ctx;
 551     SHA256_Init(&ctx);
 552     SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
 553     SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
 554     SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
 555     SHA256_Final((unsigned char*)&hash1, &ctx);
 556     uint256 hash2;
 557     SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
 558     return hash2;
 559 }
 560
 561 template<typename T>
 562 uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=VERSION)
 563 {
 564     // Most of the time is spent allocating and deallocating CDataStream's
 565     // buffer.  If this ever needs to be optimized further, make a CStaticStream
 566     // class with its buffer on the stack.
 567     CDataStream ss(nType, nVersion);
 568     ss.reserve(10000);
 569     ss << obj;
 570     return Hash(ss.begin(), ss.end());
 571 }
 572
 573 inline uint160 Hash160(const std::vector<unsigned char>& vch)
 574 {
 575     uint256 hash1;
 576     SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
 577     uint160 hash2;
 578     RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
 579     return hash2;
 580 }
 581
 582
 583 // Median filter over a stream of values
 584 // Returns the median of the last N numbers
 585 template <typename T> class CMedianFilter
 586 {
 587 private:
 588     std::vector<T> vValues;
 589     std::vector<T> vSorted;
 590     int nSize;
 591 public:
 592     CMedianFilter(int size, T initial_value):
 593         nSize(size)
 594     {
 595         vValues.reserve(size);
 596         vValues.push_back(initial_value);
 597         vSorted = vValues;
 598     }
 599
 600     void input(T value)
 601     {
 602         if(vValues.size() == nSize)
 603         {
 604             vValues.erase(vValues.begin());
 605         }
 606         vValues.push_back(value);
 607
 608         vSorted.resize(vValues.size());
 609         std::copy(vValues.begin(), vValues.end(), vSorted.begin());
 610         std::sort(vSorted.begin(), vSorted.end());
 611     }
 612
 613     T median() const
 614     {
 615         int size = vSorted.size();
 616         assert(size>0);
 617         if(size & 1) // Odd number of elements
 618         {
 619             return vSorted[size/2];
 620         }
 621         else // Even number of elements
 622         {
 623             return (vSorted[size/2-1] + vSorted[size/2]) / 2;
 624         }
 625     }
 626
 627     int size() const
 628     {
 629         return vValues.size();
 630     }
 631
 632     std::vector<T> sorted () const
 633     {
 634         return vSorted;
 635     }
 636 };
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647 // Note: It turns out we might have been able to use boost::thread
 648 // by using TerminateThread(boost::thread.native_handle(), 0);
 649 #ifdef WIN32
 650 typedef HANDLE pthread_t;
 651
 652 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
 653 {
 654     DWORD nUnused = 0;
 655     HANDLE hthread =
 656         CreateThread(
 657             NULL,                        // default security
 658             0,                           // inherit stack size from parent
 659             (LPTHREAD_START_ROUTINE)pfn, // function pointer
 660             parg,                        // argument
 661             0,                           // creation option, start immediately
 662             &nUnused);                   // thread identifier
 663     if (hthread == NULL)
 664     {
 665         printf("Error: CreateThread() returned %d\n", GetLastError());
 666         return (pthread_t)0;
 667     }
 668     if (!fWantHandle)
 669     {
 670         CloseHandle(hthread);
 671         return (pthread_t)-1;
 672     }
 673     return hthread;
 674 }
 675
 676 inline void SetThreadPriority(int nPriority)
 677 {
 678     SetThreadPriority(GetCurrentThread(), nPriority);
 679 }
 680 #else
 681 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
 682 {
 683     pthread_t hthread = 0;
 684     int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
 685     if (ret != 0)
 686     {
 687         printf("Error: pthread_create() returned %d\n", ret);
 688         return (pthread_t)0;
 689     }
 690     if (!fWantHandle)
 691     {
 692         pthread_detach(hthread);
 693         return (pthread_t)-1;
 694     }
 695     return hthread;
 696 }
 697
 698 #define THREAD_PRIORITY_LOWEST          PRIO_MAX
 699 #define THREAD_PRIORITY_BELOW_NORMAL    2
 700 #define THREAD_PRIORITY_NORMAL          0
 701 #define THREAD_PRIORITY_ABOVE_NORMAL    0
 702
 703 inline void SetThreadPriority(int nPriority)
 704 {
 705     // It's unclear if it's even possible to change thread priorities on Linux,
 706     // but we really and truly need it for the generation threads.
 707 #ifdef PRIO_THREAD
 708     setpriority(PRIO_THREAD, 0, nPriority);
 709 #else
 710     setpriority(PRIO_PROCESS, 0, nPriority);
 711 #endif
 712 }
 713
 714 inline bool TerminateThread(pthread_t hthread, unsigned int nExitCode)
 715 {
 716     return (pthread_cancel(hthread) == 0);
 717 }
 718
 719 inline void ExitThread(size_t nExitCode)
 720 {
 721     pthread_exit((void*)nExitCode);
 722 }
 723 #endif
 724
 725
 726
 727
 728
 729 inline bool AffinityBugWorkaround(void(*pfn)(void*))
 730 {
 731 #ifdef WIN32
 732     // Sometimes after a few hours affinity gets stuck on one processor
 733     DWORD_PTR dwProcessAffinityMask = -1;
 734     DWORD_PTR dwSystemAffinityMask = -1;
 735     GetProcessAffinityMask(GetCurrentProcess(), &dwProcessAffinityMask, &dwSystemAffinityMask);
 736     DWORD dwPrev1 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
 737     DWORD dwPrev2 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
 738     if (dwPrev2 != dwProcessAffinityMask)
 739     {
 740         printf("AffinityBugWorkaround() : SetThreadAffinityMask=%d, ProcessAffinityMask=%d, restarting thread\n", dwPrev2, dwProcessAffinityMask);
 741         if (!CreateThread(pfn, NULL))
 742             printf("Error: CreateThread() failed\n");
 743         return true;
 744     }
 745 #endif
 746     return false;
 747 }
 748
 749 inline uint32_t ByteReverse(uint32_t value)
 750 {
 751         value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
 752         return (value<<16) | (value>>16);
 753 }
 754
 755 #endif