raw
genesis                 1 // Copyright (c) 2009-2010 Satoshi Nakamoto
genesis 2 // Copyright (c) 2009-2012 The Bitcoin developers
genesis 3 // Distributed under the MIT/X11 software license, see the accompanying
genesis 4 // file license.txt or http://www.opensource.org/licenses/mit-license.php.
genesis 5 #ifndef BITCOIN_UTIL_H
genesis 6 #define BITCOIN_UTIL_H
genesis 7
genesis 8 #include "uint256.h"
genesis 9
asciilifeform-kil... 10 #include <stdint.h>
genesis 11 #include <sys/types.h>
genesis 12 #include <sys/time.h>
genesis 13 #include <sys/resource.h>
genesis 14 #include <map>
genesis 15 #include <vector>
genesis 16 #include <string>
genesis 17
genesis 18 #include <boost/thread.hpp>
genesis 19 #include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
genesis 20 #include <boost/date_time/gregorian/gregorian_types.hpp>
genesis 21 #include <boost/date_time/posix_time/posix_time_types.hpp>
genesis 22
genesis 23 #include <openssl/sha.h>
genesis 24 #include <openssl/ripemd.h>
genesis 25
genesis 26
genesis 27 typedef long long int64;
genesis 28 typedef unsigned long long uint64;
bitcoin-asciilife... 29
genesis 30 #define __forceinline inline
genesis 31
genesis 32 #define loop for (;;)
genesis 33 #define BEGIN(a) ((char*)&(a))
genesis 34 #define END(a) ((char*)&((&(a))[1]))
genesis 35 #define UBEGIN(a) ((unsigned char*)&(a))
genesis 36 #define UEND(a) ((unsigned char*)&((&(a))[1]))
genesis 37 #define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
genesis 38 #define printf OutputDebugStringF
genesis 39
genesis 40 #ifdef snprintf
genesis 41 #undef snprintf
genesis 42 #endif
genesis 43 #define snprintf my_snprintf
genesis 44
genesis 45 #ifndef PRI64d
genesis 46 #define PRI64d "lld"
genesis 47 #define PRI64u "llu"
genesis 48 #define PRI64x "llx"
genesis 49 #endif
genesis 50
genesis 51 // This is needed because the foreach macro can't get over the comma in pair<t1, t2>
genesis 52 #define PAIRTYPE(t1, t2) std::pair<t1, t2>
genesis 53
genesis 54 // Align by increasing pointer, must have extra space at end of buffer
genesis 55 template <size_t nBytes, typename T>
genesis 56 T* alignup(T* p)
genesis 57 {
genesis 58 union
genesis 59 {
genesis 60 T* ptr;
genesis 61 size_t n;
genesis 62 } u;
genesis 63 u.ptr = p;
genesis 64 u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
genesis 65 return u.ptr;
genesis 66 }
genesis 67
genesis 68 #define WSAGetLastError() errno
genesis 69 #define WSAEINVAL EINVAL
genesis 70 #define WSAEALREADY EALREADY
genesis 71 #define WSAEWOULDBLOCK EWOULDBLOCK
genesis 72 #define WSAEMSGSIZE EMSGSIZE
genesis 73 #define WSAEINTR EINTR
genesis 74 #define WSAEINPROGRESS EINPROGRESS
genesis 75 #define WSAEADDRINUSE EADDRINUSE
genesis 76 #define WSAENOTSOCK EBADF
genesis 77 #define INVALID_SOCKET (SOCKET)(~0)
genesis 78 #define SOCKET_ERROR -1
genesis 79 typedef u_int SOCKET;
genesis 80 #define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d)
genesis 81 #define strlwr(psz) to_lower(psz)
genesis 82 #define _strlwr(psz) to_lower(psz)
genesis 83 #define MAX_PATH 1024
genesis 84 #define Beep(n1,n2) (0)
genesis 85 inline void Sleep(int64 n)
genesis 86 {
genesis 87 /*Boost has a year 2038 problem- if the request sleep time is past epoch+2^31 seconds the sleep returns instantly.
genesis 88 So we clamp our sleeps here to 10 years and hope that boost is fixed by 2028.*/
genesis 89 boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n>315576000000LL?315576000000LL:n));
genesis 90 }
bitcoin-asciilife... 91
genesis 92
genesis 93 inline int myclosesocket(SOCKET& hSocket)
genesis 94 {
genesis 95 if (hSocket == INVALID_SOCKET)
genesis 96 return WSAENOTSOCK;
genesis 97 int ret = close(hSocket);
genesis 98 hSocket = INVALID_SOCKET;
genesis 99 return ret;
genesis 100 }
genesis 101 #define closesocket(s) myclosesocket(s)
genesis 102 inline const char* _(const char* psz)
genesis 103 {
genesis 104 return psz;
genesis 105 }
bitcoin-asciilife... 106
genesis 107
genesis 108 extern std::map<std::string, std::string> mapArgs;
genesis 109 extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
genesis 110 extern bool fDebug;
genesis 111 extern bool fPrintToConsole;
genesis 112 extern bool fPrintToDebugger;
asciilifeform_and... 113 extern bool fCanEat;
asciilifeform_add... 114 extern bool fVerifyAll;
genesis 115 extern char pszSetDataDir[MAX_PATH];
genesis 116 extern bool fRequestShutdown;
genesis 117 extern bool fShutdown;
genesis 118 extern bool fDaemon;
genesis 119 extern bool fServer;
genesis 120 extern bool fCommandLine;
genesis 121 extern std::string strMiscWarning;
genesis 122 extern bool fNoListen;
genesis 123 extern bool fLogTimestamps;
programmable-vers... 124 extern std::string CLIENT_NAME;
mod6_der_high_low_s 125 extern bool fLowS;
mod6_der_high_low_s 126 extern bool fHighS;
genesis 127
genesis 128 void RandAddSeed();
genesis 129 void RandAddSeedPerfmon();
genesis 130 int OutputDebugStringF(const char* pszFormat, ...);
genesis 131 int my_snprintf(char* buffer, size_t limit, const char* format, ...);
genesis 132 std::string strprintf(const std::string &format, ...);
genesis 133 bool error(const std::string &format, ...);
genesis 134 void LogException(std::exception* pex, const char* pszThread);
genesis 135 void PrintException(std::exception* pex, const char* pszThread);
genesis 136 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
genesis 137 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
genesis 138 std::string FormatMoney(int64 n, bool fPlus=false);
genesis 139 bool ParseMoney(const std::string& str, int64& nRet);
genesis 140 bool ParseMoney(const char* pszIn, int64& nRet);
genesis 141 std::vector<unsigned char> ParseHex(const char* psz);
genesis 142 std::vector<unsigned char> ParseHex(const std::string& str);
genesis 143 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
genesis 144 std::string DecodeBase64(const std::string& str);
genesis 145 std::string EncodeBase64(const unsigned char* pch, size_t len);
genesis 146 std::string EncodeBase64(const std::string& str);
genesis 147 void ParseParameters(int argc, char* argv[]);
genesis 148 const char* wxGetTranslation(const char* psz);
genesis 149 bool WildcardMatch(const char* psz, const char* mask);
genesis 150 bool WildcardMatch(const std::string& str, const std::string& mask);
genesis 151 int GetFilesize(FILE* file);
genesis 152 void GetDataDir(char* pszDirRet);
genesis 153 std::string GetConfigFile();
genesis 154 std::string GetPidFile();
genesis 155 void CreatePidFile(std::string pidFile, pid_t pid);
genesis 156 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
genesis 157 std::string GetDefaultDataDir();
genesis 158 std::string GetDataDir();
genesis 159 void ShrinkDebugFile();
genesis 160 int GetRandInt(int nMax);
genesis 161 uint64 GetRand(uint64 nMax);
genesis 162 int64 GetTime();
genesis 163 void SetMockTime(int64 nMockTimeIn);
genesis 164 int64 GetAdjustedTime();
genesis 165 void AddTimeData(unsigned int ip, int64 nTime);
genesis 166 std::string FormatFullVersion();
programmable-vers... 167 std::string FormatSubVersion(const std::string& name, int nClientVersion);
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genesis 180
genesis 181 // Wrapper to automatically initialize mutex
genesis 182 class CCriticalSection
genesis 183 {
genesis 184 protected:
genesis 185 boost::interprocess::interprocess_recursive_mutex mutex;
genesis 186 public:
genesis 187 explicit CCriticalSection() { }
genesis 188 ~CCriticalSection() { }
genesis 189 void Enter(const char* pszName, const char* pszFile, int nLine);
genesis 190 void Leave();
genesis 191 bool TryEnter(const char* pszName, const char* pszFile, int nLine);
genesis 192 };
genesis 193
genesis 194 // Automatically leave critical section when leaving block, needed for exception safety
genesis 195 class CCriticalBlock
genesis 196 {
genesis 197 protected:
genesis 198 CCriticalSection* pcs;
genesis 199
genesis 200 public:
genesis 201 CCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
genesis 202 {
genesis 203 pcs = &csIn;
genesis 204 pcs->Enter(pszName, pszFile, nLine);
genesis 205 }
genesis 206
genesis 207 operator bool() const
genesis 208 {
genesis 209 return true;
genesis 210 }
genesis 211
genesis 212 ~CCriticalBlock()
genesis 213 {
genesis 214 pcs->Leave();
genesis 215 }
genesis 216 };
genesis 217
genesis 218 #define CRITICAL_BLOCK(cs) \
genesis 219 if (CCriticalBlock criticalblock = CCriticalBlock(cs, #cs, __FILE__, __LINE__))
genesis 220
genesis 221 #define ENTER_CRITICAL_SECTION(cs) \
genesis 222 (cs).Enter(#cs, __FILE__, __LINE__)
genesis 223
genesis 224 #define LEAVE_CRITICAL_SECTION(cs) \
genesis 225 (cs).Leave()
genesis 226
genesis 227 class CTryCriticalBlock
genesis 228 {
genesis 229 protected:
genesis 230 CCriticalSection* pcs;
genesis 231
genesis 232 public:
genesis 233 CTryCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
genesis 234 {
genesis 235 pcs = (csIn.TryEnter(pszName, pszFile, nLine) ? &csIn : NULL);
genesis 236 }
genesis 237
genesis 238 operator bool() const
genesis 239 {
genesis 240 return Entered();
genesis 241 }
genesis 242
genesis 243 ~CTryCriticalBlock()
genesis 244 {
genesis 245 if (pcs)
genesis 246 {
genesis 247 pcs->Leave();
genesis 248 }
genesis 249 }
genesis 250 bool Entered() const { return pcs != NULL; }
genesis 251 };
genesis 252
genesis 253 #define TRY_CRITICAL_BLOCK(cs) \
genesis 254 if (CTryCriticalBlock criticalblock = CTryCriticalBlock(cs, #cs, __FILE__, __LINE__))
genesis 255
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genesis 259
genesis 260
genesis 261 // This is exactly like std::string, but with a custom allocator.
genesis 262 // (secure_allocator<> is defined in serialize.h)
genesis 263 typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
genesis 264
genesis 265 // This is exactly like std::string, but with a custom allocator.
genesis 266 // (secure_allocator<> is defined in serialize.h)
genesis 267 typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
genesis 268
genesis 269
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genesis 272
genesis 273 inline std::string i64tostr(int64 n)
genesis 274 {
genesis 275 return strprintf("%"PRI64d, n);
genesis 276 }
genesis 277
genesis 278 inline std::string itostr(int n)
genesis 279 {
genesis 280 return strprintf("%d", n);
genesis 281 }
genesis 282
genesis 283 inline int64 atoi64(const char* psz)
genesis 284 {
genesis 285 return strtoll(psz, NULL, 10);
genesis 286 }
genesis 287
genesis 288 inline int64 atoi64(const std::string& str)
genesis 289 {
genesis 290 return strtoll(str.c_str(), NULL, 10);
genesis 291 }
genesis 292
genesis 293 inline int atoi(const std::string& str)
genesis 294 {
genesis 295 return atoi(str.c_str());
genesis 296 }
genesis 297
genesis 298 inline int roundint(double d)
genesis 299 {
genesis 300 return (int)(d > 0 ? d + 0.5 : d - 0.5);
genesis 301 }
genesis 302
genesis 303 inline int64 roundint64(double d)
genesis 304 {
genesis 305 return (int64)(d > 0 ? d + 0.5 : d - 0.5);
genesis 306 }
genesis 307
genesis 308 inline int64 abs64(int64 n)
genesis 309 {
genesis 310 return (n >= 0 ? n : -n);
genesis 311 }
genesis 312
genesis 313 template<typename T>
genesis 314 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
genesis 315 {
genesis 316 if (itbegin == itend)
genesis 317 return "";
genesis 318 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
genesis 319 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
genesis 320 std::string str;
genesis 321 str.reserve((pend-pbegin) * (fSpaces ? 3 : 2));
genesis 322 for (const unsigned char* p = pbegin; p != pend; p++)
genesis 323 str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
genesis 324 return str;
genesis 325 }
genesis 326
genesis 327 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
genesis 328 {
genesis 329 return HexStr(vch.begin(), vch.end(), fSpaces);
genesis 330 }
genesis 331
genesis 332 template<typename T>
genesis 333 std::string HexNumStr(const T itbegin, const T itend, bool f0x=true)
genesis 334 {
genesis 335 if (itbegin == itend)
genesis 336 return "";
genesis 337 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
genesis 338 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
genesis 339 std::string str = (f0x ? "0x" : "");
genesis 340 str.reserve(str.size() + (pend-pbegin) * 2);
genesis 341 for (const unsigned char* p = pend-1; p >= pbegin; p--)
genesis 342 str += strprintf("%02x", *p);
genesis 343 return str;
genesis 344 }
genesis 345
genesis 346 inline std::string HexNumStr(const std::vector<unsigned char>& vch, bool f0x=true)
genesis 347 {
genesis 348 return HexNumStr(vch.begin(), vch.end(), f0x);
genesis 349 }
genesis 350
genesis 351 template<typename T>
genesis 352 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
genesis 353 {
genesis 354 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
genesis 355 }
genesis 356
genesis 357 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
genesis 358 {
genesis 359 printf(pszFormat, HexStr(vch, fSpaces).c_str());
genesis 360 }
genesis 361
genesis 362 inline int64 GetPerformanceCounter()
genesis 363 {
genesis 364 int64 nCounter = 0;
genesis 365 timeval t;
genesis 366 gettimeofday(&t, NULL);
genesis 367 nCounter = t.tv_sec * 1000000 + t.tv_usec;
genesis 368 return nCounter;
genesis 369 }
genesis 370
genesis 371 inline int64 GetTimeMillis()
genesis 372 {
genesis 373 return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
genesis 374 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
genesis 375 }
genesis 376
genesis 377 inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
genesis 378 {
genesis 379 time_t n = nTime;
genesis 380 struct tm* ptmTime = gmtime(&n);
genesis 381 char pszTime[200];
genesis 382 strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
genesis 383 return pszTime;
genesis 384 }
genesis 385
genesis 386 template<typename T>
genesis 387 void skipspaces(T& it)
genesis 388 {
genesis 389 while (isspace(*it))
genesis 390 ++it;
genesis 391 }
genesis 392
genesis 393 inline bool IsSwitchChar(char c)
genesis 394 {
genesis 395 return c == '-';
genesis 396 }
genesis 397
genesis 398 inline std::string GetArg(const std::string& strArg, const std::string& strDefault)
genesis 399 {
genesis 400 if (mapArgs.count(strArg))
genesis 401 return mapArgs[strArg];
genesis 402 return strDefault;
genesis 403 }
genesis 404
genesis 405 inline int64 GetArg(const std::string& strArg, int64 nDefault)
genesis 406 {
genesis 407 if (mapArgs.count(strArg))
genesis 408 return atoi64(mapArgs[strArg]);
genesis 409 return nDefault;
genesis 410 }
genesis 411
genesis 412 inline bool GetBoolArg(const std::string& strArg, bool fDefault=false)
genesis 413 {
genesis 414 if (mapArgs.count(strArg))
genesis 415 {
genesis 416 if (mapArgs[strArg].empty())
genesis 417 return true;
genesis 418 return (atoi(mapArgs[strArg]) != 0);
genesis 419 }
genesis 420 return fDefault;
genesis 421 }
genesis 422
genesis 423 /**
genesis 424 * Set an argument if it doesn't already have a value
genesis 425 *
genesis 426 * @param strArg Argument to set (e.g. "-foo")
genesis 427 * @param strValue Value (e.g. "1")
genesis 428 * @return true if argument gets set, false if it already had a value
genesis 429 */
genesis 430 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
genesis 431
genesis 432 /**
genesis 433 * Set a boolean argument if it doesn't already have a value
genesis 434 *
genesis 435 * @param strArg Argument to set (e.g. "-foo")
genesis 436 * @param fValue Value (e.g. false)
genesis 437 * @return true if argument gets set, false if it already had a value
genesis 438 */
genesis 439 bool SoftSetArg(const std::string& strArg, bool fValue);
genesis 440
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genesis 448
genesis 449 inline void heapchk()
genesis 450 {
genesis 451 }
genesis 452
genesis 453 // Randomize the stack to help protect against buffer overrun exploits
genesis 454 #define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
genesis 455 { \
genesis 456 static char nLoops; \
genesis 457 if (nLoops <= 0) \
genesis 458 nLoops = GetRand(20) + 1; \
genesis 459 if (nLoops-- > 1) \
genesis 460 { \
genesis 461 ThreadFn; \
genesis 462 return; \
genesis 463 } \
genesis 464 }
genesis 465
genesis 466 #define CATCH_PRINT_EXCEPTION(pszFn) \
genesis 467 catch (std::exception& e) { \
genesis 468 PrintException(&e, (pszFn)); \
genesis 469 } catch (...) { \
genesis 470 PrintException(NULL, (pszFn)); \
genesis 471 }
genesis 472
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genesis 481
genesis 482 template<typename T1>
genesis 483 inline uint256 Hash(const T1 pbegin, const T1 pend)
genesis 484 {
genesis 485 static unsigned char pblank[1];
genesis 486 uint256 hash1;
genesis 487 SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
genesis 488 uint256 hash2;
genesis 489 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
genesis 490 return hash2;
genesis 491 }
genesis 492
genesis 493 template<typename T1, typename T2>
genesis 494 inline uint256 Hash(const T1 p1begin, const T1 p1end,
genesis 495 const T2 p2begin, const T2 p2end)
genesis 496 {
genesis 497 static unsigned char pblank[1];
genesis 498 uint256 hash1;
genesis 499 SHA256_CTX ctx;
genesis 500 SHA256_Init(&ctx);
genesis 501 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
genesis 502 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
genesis 503 SHA256_Final((unsigned char*)&hash1, &ctx);
genesis 504 uint256 hash2;
genesis 505 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
genesis 506 return hash2;
genesis 507 }
genesis 508
genesis 509 template<typename T1, typename T2, typename T3>
genesis 510 inline uint256 Hash(const T1 p1begin, const T1 p1end,
genesis 511 const T2 p2begin, const T2 p2end,
genesis 512 const T3 p3begin, const T3 p3end)
genesis 513 {
genesis 514 static unsigned char pblank[1];
genesis 515 uint256 hash1;
genesis 516 SHA256_CTX ctx;
genesis 517 SHA256_Init(&ctx);
genesis 518 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
genesis 519 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
genesis 520 SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
genesis 521 SHA256_Final((unsigned char*)&hash1, &ctx);
genesis 522 uint256 hash2;
genesis 523 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
genesis 524 return hash2;
genesis 525 }
genesis 526
genesis 527 template<typename T>
genesis 528 uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=VERSION)
genesis 529 {
genesis 530 // Most of the time is spent allocating and deallocating CDataStream's
genesis 531 // buffer. If this ever needs to be optimized further, make a CStaticStream
genesis 532 // class with its buffer on the stack.
genesis 533 CDataStream ss(nType, nVersion);
genesis 534 ss.reserve(10000);
genesis 535 ss << obj;
genesis 536 return Hash(ss.begin(), ss.end());
genesis 537 }
genesis 538
genesis 539 inline uint160 Hash160(const std::vector<unsigned char>& vch)
genesis 540 {
genesis 541 uint256 hash1;
genesis 542 SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
genesis 543 uint160 hash2;
genesis 544 RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
genesis 545 return hash2;
genesis 546 }
genesis 547
genesis 548
genesis 549 // Median filter over a stream of values
genesis 550 // Returns the median of the last N numbers
genesis 551 template <typename T> class CMedianFilter
genesis 552 {
genesis 553 private:
genesis 554 std::vector<T> vValues;
genesis 555 std::vector<T> vSorted;
genesis 556 int nSize;
genesis 557 public:
genesis 558 CMedianFilter(int size, T initial_value):
genesis 559 nSize(size)
genesis 560 {
genesis 561 vValues.reserve(size);
genesis 562 vValues.push_back(initial_value);
genesis 563 vSorted = vValues;
genesis 564 }
genesis 565
genesis 566 void input(T value)
genesis 567 {
genesis 568 if(vValues.size() == nSize)
genesis 569 {
genesis 570 vValues.erase(vValues.begin());
genesis 571 }
genesis 572 vValues.push_back(value);
genesis 573
genesis 574 vSorted.resize(vValues.size());
genesis 575 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
genesis 576 std::sort(vSorted.begin(), vSorted.end());
genesis 577 }
genesis 578
genesis 579 T median() const
genesis 580 {
genesis 581 int size = vSorted.size();
genesis 582 assert(size>0);
genesis 583 if(size & 1) // Odd number of elements
genesis 584 {
genesis 585 return vSorted[size/2];
genesis 586 }
genesis 587 else // Even number of elements
genesis 588 {
genesis 589 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
genesis 590 }
genesis 591 }
genesis 592 };
genesis 593
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genesis 602
genesis 603 // Note: It turns out we might have been able to use boost::thread
genesis 604 // by using TerminateThread(boost::thread.native_handle(), 0);
genesis 605 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
genesis 606 {
genesis 607 pthread_t hthread = 0;
genesis 608 int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
genesis 609 if (ret != 0)
genesis 610 {
genesis 611 printf("Error: pthread_create() returned %d\n", ret);
genesis 612 return (pthread_t)0;
genesis 613 }
genesis 614 if (!fWantHandle)
genesis 615 {
genesis 616 pthread_detach(hthread);
genesis 617 return (pthread_t)-1;
genesis 618 }
genesis 619 return hthread;
genesis 620 }
genesis 621
genesis 622 #define THREAD_PRIORITY_LOWEST PRIO_MAX
genesis 623 #define THREAD_PRIORITY_BELOW_NORMAL 2
genesis 624 #define THREAD_PRIORITY_NORMAL 0
genesis 625 #define THREAD_PRIORITY_ABOVE_NORMAL 0
genesis 626
genesis 627 inline void SetThreadPriority(int nPriority)
genesis 628 {
genesis 629 // It's unclear if it's even possible to change thread priorities on Linux,
genesis 630 // but we really and truly need it for the generation threads.
genesis 631 #ifdef PRIO_THREAD
genesis 632 setpriority(PRIO_THREAD, 0, nPriority);
genesis 633 #else
genesis 634 setpriority(PRIO_PROCESS, 0, nPriority);
genesis 635 #endif
genesis 636 }
genesis 637
genesis 638 inline bool TerminateThread(pthread_t hthread, unsigned int nExitCode)
genesis 639 {
genesis 640 return (pthread_cancel(hthread) == 0);
genesis 641 }
genesis 642
genesis 643 inline void ExitThread(size_t nExitCode)
genesis 644 {
genesis 645 pthread_exit((void*)nExitCode);
genesis 646 }
genesis 647
genesis 648
genesis 649
genesis 650 inline bool AffinityBugWorkaround(void(*pfn)(void*))
genesis 651 {
genesis 652 return false;
genesis 653 }
genesis 654
genesis 655 inline uint32_t ByteReverse(uint32_t value)
genesis 656 {
genesis 657 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
genesis 658 return (value<<16) | (value>>16);
genesis 659 }
genesis 660
genesis 661 #endif