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;
genesis 125
genesis 126 void RandAddSeed();
genesis 127 void RandAddSeedPerfmon();
genesis 128 int OutputDebugStringF(const char* pszFormat, ...);
genesis 129 int my_snprintf(char* buffer, size_t limit, const char* format, ...);
genesis 130 std::string strprintf(const std::string &format, ...);
genesis 131 bool error(const std::string &format, ...);
genesis 132 void LogException(std::exception* pex, const char* pszThread);
genesis 133 void PrintException(std::exception* pex, const char* pszThread);
genesis 134 void PrintExceptionContinue(std::exception* pex, const char* pszThread);
genesis 135 void ParseString(const std::string& str, char c, std::vector<std::string>& v);
genesis 136 std::string FormatMoney(int64 n, bool fPlus=false);
genesis 137 bool ParseMoney(const std::string& str, int64& nRet);
genesis 138 bool ParseMoney(const char* pszIn, int64& nRet);
genesis 139 std::vector<unsigned char> ParseHex(const char* psz);
genesis 140 std::vector<unsigned char> ParseHex(const std::string& str);
genesis 141 std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
genesis 142 std::string DecodeBase64(const std::string& str);
genesis 143 std::string EncodeBase64(const unsigned char* pch, size_t len);
genesis 144 std::string EncodeBase64(const std::string& str);
genesis 145 void ParseParameters(int argc, char* argv[]);
genesis 146 const char* wxGetTranslation(const char* psz);
genesis 147 bool WildcardMatch(const char* psz, const char* mask);
genesis 148 bool WildcardMatch(const std::string& str, const std::string& mask);
genesis 149 int GetFilesize(FILE* file);
genesis 150 void GetDataDir(char* pszDirRet);
genesis 151 std::string GetConfigFile();
genesis 152 std::string GetPidFile();
genesis 153 void CreatePidFile(std::string pidFile, pid_t pid);
genesis 154 void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
genesis 155 std::string GetDefaultDataDir();
genesis 156 std::string GetDataDir();
genesis 157 void ShrinkDebugFile();
genesis 158 int GetRandInt(int nMax);
genesis 159 uint64 GetRand(uint64 nMax);
genesis 160 int64 GetTime();
genesis 161 void SetMockTime(int64 nMockTimeIn);
genesis 162 int64 GetAdjustedTime();
genesis 163 void AddTimeData(unsigned int ip, int64 nTime);
genesis 164 std::string FormatFullVersion();
programmable-vers... 165 std::string FormatSubVersion(const std::string& name, int nClientVersion);
genesis 166
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genesis 178
genesis 179 // Wrapper to automatically initialize mutex
genesis 180 class CCriticalSection
genesis 181 {
genesis 182 protected:
genesis 183 boost::interprocess::interprocess_recursive_mutex mutex;
genesis 184 public:
genesis 185 explicit CCriticalSection() { }
genesis 186 ~CCriticalSection() { }
genesis 187 void Enter(const char* pszName, const char* pszFile, int nLine);
genesis 188 void Leave();
genesis 189 bool TryEnter(const char* pszName, const char* pszFile, int nLine);
genesis 190 };
genesis 191
genesis 192 // Automatically leave critical section when leaving block, needed for exception safety
genesis 193 class CCriticalBlock
genesis 194 {
genesis 195 protected:
genesis 196 CCriticalSection* pcs;
genesis 197
genesis 198 public:
genesis 199 CCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
genesis 200 {
genesis 201 pcs = &csIn;
genesis 202 pcs->Enter(pszName, pszFile, nLine);
genesis 203 }
genesis 204
genesis 205 operator bool() const
genesis 206 {
genesis 207 return true;
genesis 208 }
genesis 209
genesis 210 ~CCriticalBlock()
genesis 211 {
genesis 212 pcs->Leave();
genesis 213 }
genesis 214 };
genesis 215
genesis 216 #define CRITICAL_BLOCK(cs) \
genesis 217 if (CCriticalBlock criticalblock = CCriticalBlock(cs, #cs, __FILE__, __LINE__))
genesis 218
genesis 219 #define ENTER_CRITICAL_SECTION(cs) \
genesis 220 (cs).Enter(#cs, __FILE__, __LINE__)
genesis 221
genesis 222 #define LEAVE_CRITICAL_SECTION(cs) \
genesis 223 (cs).Leave()
genesis 224
genesis 225 class CTryCriticalBlock
genesis 226 {
genesis 227 protected:
genesis 228 CCriticalSection* pcs;
genesis 229
genesis 230 public:
genesis 231 CTryCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
genesis 232 {
genesis 233 pcs = (csIn.TryEnter(pszName, pszFile, nLine) ? &csIn : NULL);
genesis 234 }
genesis 235
genesis 236 operator bool() const
genesis 237 {
genesis 238 return Entered();
genesis 239 }
genesis 240
genesis 241 ~CTryCriticalBlock()
genesis 242 {
genesis 243 if (pcs)
genesis 244 {
genesis 245 pcs->Leave();
genesis 246 }
genesis 247 }
genesis 248 bool Entered() const { return pcs != NULL; }
genesis 249 };
genesis 250
genesis 251 #define TRY_CRITICAL_BLOCK(cs) \
genesis 252 if (CTryCriticalBlock criticalblock = CTryCriticalBlock(cs, #cs, __FILE__, __LINE__))
genesis 253
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genesis 257
genesis 258
genesis 259 // This is exactly like std::string, but with a custom allocator.
genesis 260 // (secure_allocator<> is defined in serialize.h)
genesis 261 typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
genesis 262
genesis 263 // This is exactly like std::string, but with a custom allocator.
genesis 264 // (secure_allocator<> is defined in serialize.h)
genesis 265 typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
genesis 266
genesis 267
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genesis 270
genesis 271 inline std::string i64tostr(int64 n)
genesis 272 {
genesis 273 return strprintf("%"PRI64d, n);
genesis 274 }
genesis 275
genesis 276 inline std::string itostr(int n)
genesis 277 {
genesis 278 return strprintf("%d", n);
genesis 279 }
genesis 280
genesis 281 inline int64 atoi64(const char* psz)
genesis 282 {
genesis 283 return strtoll(psz, NULL, 10);
genesis 284 }
genesis 285
genesis 286 inline int64 atoi64(const std::string& str)
genesis 287 {
genesis 288 return strtoll(str.c_str(), NULL, 10);
genesis 289 }
genesis 290
genesis 291 inline int atoi(const std::string& str)
genesis 292 {
genesis 293 return atoi(str.c_str());
genesis 294 }
genesis 295
genesis 296 inline int roundint(double d)
genesis 297 {
genesis 298 return (int)(d > 0 ? d + 0.5 : d - 0.5);
genesis 299 }
genesis 300
genesis 301 inline int64 roundint64(double d)
genesis 302 {
genesis 303 return (int64)(d > 0 ? d + 0.5 : d - 0.5);
genesis 304 }
genesis 305
genesis 306 inline int64 abs64(int64 n)
genesis 307 {
genesis 308 return (n >= 0 ? n : -n);
genesis 309 }
genesis 310
genesis 311 template<typename T>
genesis 312 std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
genesis 313 {
genesis 314 if (itbegin == itend)
genesis 315 return "";
genesis 316 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
genesis 317 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
genesis 318 std::string str;
genesis 319 str.reserve((pend-pbegin) * (fSpaces ? 3 : 2));
genesis 320 for (const unsigned char* p = pbegin; p != pend; p++)
genesis 321 str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
genesis 322 return str;
genesis 323 }
genesis 324
genesis 325 inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
genesis 326 {
genesis 327 return HexStr(vch.begin(), vch.end(), fSpaces);
genesis 328 }
genesis 329
genesis 330 template<typename T>
genesis 331 std::string HexNumStr(const T itbegin, const T itend, bool f0x=true)
genesis 332 {
genesis 333 if (itbegin == itend)
genesis 334 return "";
genesis 335 const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
genesis 336 const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
genesis 337 std::string str = (f0x ? "0x" : "");
genesis 338 str.reserve(str.size() + (pend-pbegin) * 2);
genesis 339 for (const unsigned char* p = pend-1; p >= pbegin; p--)
genesis 340 str += strprintf("%02x", *p);
genesis 341 return str;
genesis 342 }
genesis 343
genesis 344 inline std::string HexNumStr(const std::vector<unsigned char>& vch, bool f0x=true)
genesis 345 {
genesis 346 return HexNumStr(vch.begin(), vch.end(), f0x);
genesis 347 }
genesis 348
genesis 349 template<typename T>
genesis 350 void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
genesis 351 {
genesis 352 printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
genesis 353 }
genesis 354
genesis 355 inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
genesis 356 {
genesis 357 printf(pszFormat, HexStr(vch, fSpaces).c_str());
genesis 358 }
genesis 359
genesis 360 inline int64 GetPerformanceCounter()
genesis 361 {
genesis 362 int64 nCounter = 0;
genesis 363 timeval t;
genesis 364 gettimeofday(&t, NULL);
genesis 365 nCounter = t.tv_sec * 1000000 + t.tv_usec;
genesis 366 return nCounter;
genesis 367 }
genesis 368
genesis 369 inline int64 GetTimeMillis()
genesis 370 {
genesis 371 return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
genesis 372 boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
genesis 373 }
genesis 374
genesis 375 inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
genesis 376 {
genesis 377 time_t n = nTime;
genesis 378 struct tm* ptmTime = gmtime(&n);
genesis 379 char pszTime[200];
genesis 380 strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
genesis 381 return pszTime;
genesis 382 }
genesis 383
genesis 384 template<typename T>
genesis 385 void skipspaces(T& it)
genesis 386 {
genesis 387 while (isspace(*it))
genesis 388 ++it;
genesis 389 }
genesis 390
genesis 391 inline bool IsSwitchChar(char c)
genesis 392 {
genesis 393 return c == '-';
genesis 394 }
genesis 395
genesis 396 inline std::string GetArg(const std::string& strArg, const std::string& strDefault)
genesis 397 {
genesis 398 if (mapArgs.count(strArg))
genesis 399 return mapArgs[strArg];
genesis 400 return strDefault;
genesis 401 }
genesis 402
genesis 403 inline int64 GetArg(const std::string& strArg, int64 nDefault)
genesis 404 {
genesis 405 if (mapArgs.count(strArg))
genesis 406 return atoi64(mapArgs[strArg]);
genesis 407 return nDefault;
genesis 408 }
genesis 409
genesis 410 inline bool GetBoolArg(const std::string& strArg, bool fDefault=false)
genesis 411 {
genesis 412 if (mapArgs.count(strArg))
genesis 413 {
genesis 414 if (mapArgs[strArg].empty())
genesis 415 return true;
genesis 416 return (atoi(mapArgs[strArg]) != 0);
genesis 417 }
genesis 418 return fDefault;
genesis 419 }
genesis 420
genesis 421 /**
genesis 422 * Set an argument if it doesn't already have a value
genesis 423 *
genesis 424 * @param strArg Argument to set (e.g. "-foo")
genesis 425 * @param strValue Value (e.g. "1")
genesis 426 * @return true if argument gets set, false if it already had a value
genesis 427 */
genesis 428 bool SoftSetArg(const std::string& strArg, const std::string& strValue);
genesis 429
genesis 430 /**
genesis 431 * Set a boolean argument if it doesn't already have a value
genesis 432 *
genesis 433 * @param strArg Argument to set (e.g. "-foo")
genesis 434 * @param fValue Value (e.g. false)
genesis 435 * @return true if argument gets set, false if it already had a value
genesis 436 */
genesis 437 bool SoftSetArg(const std::string& strArg, bool fValue);
genesis 438
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genesis 446
genesis 447 inline void heapchk()
genesis 448 {
genesis 449 }
genesis 450
genesis 451 // Randomize the stack to help protect against buffer overrun exploits
genesis 452 #define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
genesis 453 { \
genesis 454 static char nLoops; \
genesis 455 if (nLoops <= 0) \
genesis 456 nLoops = GetRand(20) + 1; \
genesis 457 if (nLoops-- > 1) \
genesis 458 { \
genesis 459 ThreadFn; \
genesis 460 return; \
genesis 461 } \
genesis 462 }
genesis 463
genesis 464 #define CATCH_PRINT_EXCEPTION(pszFn) \
genesis 465 catch (std::exception& e) { \
genesis 466 PrintException(&e, (pszFn)); \
genesis 467 } catch (...) { \
genesis 468 PrintException(NULL, (pszFn)); \
genesis 469 }
genesis 470
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genesis 479
genesis 480 template<typename T1>
genesis 481 inline uint256 Hash(const T1 pbegin, const T1 pend)
genesis 482 {
genesis 483 static unsigned char pblank[1];
genesis 484 uint256 hash1;
genesis 485 SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
genesis 486 uint256 hash2;
genesis 487 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
genesis 488 return hash2;
genesis 489 }
genesis 490
genesis 491 template<typename T1, typename T2>
genesis 492 inline uint256 Hash(const T1 p1begin, const T1 p1end,
genesis 493 const T2 p2begin, const T2 p2end)
genesis 494 {
genesis 495 static unsigned char pblank[1];
genesis 496 uint256 hash1;
genesis 497 SHA256_CTX ctx;
genesis 498 SHA256_Init(&ctx);
genesis 499 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
genesis 500 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
genesis 501 SHA256_Final((unsigned char*)&hash1, &ctx);
genesis 502 uint256 hash2;
genesis 503 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
genesis 504 return hash2;
genesis 505 }
genesis 506
genesis 507 template<typename T1, typename T2, typename T3>
genesis 508 inline uint256 Hash(const T1 p1begin, const T1 p1end,
genesis 509 const T2 p2begin, const T2 p2end,
genesis 510 const T3 p3begin, const T3 p3end)
genesis 511 {
genesis 512 static unsigned char pblank[1];
genesis 513 uint256 hash1;
genesis 514 SHA256_CTX ctx;
genesis 515 SHA256_Init(&ctx);
genesis 516 SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
genesis 517 SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
genesis 518 SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
genesis 519 SHA256_Final((unsigned char*)&hash1, &ctx);
genesis 520 uint256 hash2;
genesis 521 SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
genesis 522 return hash2;
genesis 523 }
genesis 524
genesis 525 template<typename T>
genesis 526 uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=VERSION)
genesis 527 {
genesis 528 // Most of the time is spent allocating and deallocating CDataStream's
genesis 529 // buffer. If this ever needs to be optimized further, make a CStaticStream
genesis 530 // class with its buffer on the stack.
genesis 531 CDataStream ss(nType, nVersion);
genesis 532 ss.reserve(10000);
genesis 533 ss << obj;
genesis 534 return Hash(ss.begin(), ss.end());
genesis 535 }
genesis 536
genesis 537 inline uint160 Hash160(const std::vector<unsigned char>& vch)
genesis 538 {
genesis 539 uint256 hash1;
genesis 540 SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
genesis 541 uint160 hash2;
genesis 542 RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
genesis 543 return hash2;
genesis 544 }
genesis 545
genesis 546
genesis 547 // Median filter over a stream of values
genesis 548 // Returns the median of the last N numbers
genesis 549 template <typename T> class CMedianFilter
genesis 550 {
genesis 551 private:
genesis 552 std::vector<T> vValues;
genesis 553 std::vector<T> vSorted;
genesis 554 int nSize;
genesis 555 public:
genesis 556 CMedianFilter(int size, T initial_value):
genesis 557 nSize(size)
genesis 558 {
genesis 559 vValues.reserve(size);
genesis 560 vValues.push_back(initial_value);
genesis 561 vSorted = vValues;
genesis 562 }
genesis 563
genesis 564 void input(T value)
genesis 565 {
genesis 566 if(vValues.size() == nSize)
genesis 567 {
genesis 568 vValues.erase(vValues.begin());
genesis 569 }
genesis 570 vValues.push_back(value);
genesis 571
genesis 572 vSorted.resize(vValues.size());
genesis 573 std::copy(vValues.begin(), vValues.end(), vSorted.begin());
genesis 574 std::sort(vSorted.begin(), vSorted.end());
genesis 575 }
genesis 576
genesis 577 T median() const
genesis 578 {
genesis 579 int size = vSorted.size();
genesis 580 assert(size>0);
genesis 581 if(size & 1) // Odd number of elements
genesis 582 {
genesis 583 return vSorted[size/2];
genesis 584 }
genesis 585 else // Even number of elements
genesis 586 {
genesis 587 return (vSorted[size/2-1] + vSorted[size/2]) / 2;
genesis 588 }
genesis 589 }
genesis 590 };
genesis 591
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genesis 599
genesis 600
genesis 601 // Note: It turns out we might have been able to use boost::thread
genesis 602 // by using TerminateThread(boost::thread.native_handle(), 0);
genesis 603 inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
genesis 604 {
genesis 605 pthread_t hthread = 0;
genesis 606 int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
genesis 607 if (ret != 0)
genesis 608 {
genesis 609 printf("Error: pthread_create() returned %d\n", ret);
genesis 610 return (pthread_t)0;
genesis 611 }
genesis 612 if (!fWantHandle)
genesis 613 {
genesis 614 pthread_detach(hthread);
genesis 615 return (pthread_t)-1;
genesis 616 }
genesis 617 return hthread;
genesis 618 }
genesis 619
genesis 620 #define THREAD_PRIORITY_LOWEST PRIO_MAX
genesis 621 #define THREAD_PRIORITY_BELOW_NORMAL 2
genesis 622 #define THREAD_PRIORITY_NORMAL 0
genesis 623 #define THREAD_PRIORITY_ABOVE_NORMAL 0
genesis 624
genesis 625 inline void SetThreadPriority(int nPriority)
genesis 626 {
genesis 627 // It's unclear if it's even possible to change thread priorities on Linux,
genesis 628 // but we really and truly need it for the generation threads.
genesis 629 #ifdef PRIO_THREAD
genesis 630 setpriority(PRIO_THREAD, 0, nPriority);
genesis 631 #else
genesis 632 setpriority(PRIO_PROCESS, 0, nPriority);
genesis 633 #endif
genesis 634 }
genesis 635
genesis 636 inline bool TerminateThread(pthread_t hthread, unsigned int nExitCode)
genesis 637 {
genesis 638 return (pthread_cancel(hthread) == 0);
genesis 639 }
genesis 640
genesis 641 inline void ExitThread(size_t nExitCode)
genesis 642 {
genesis 643 pthread_exit((void*)nExitCode);
genesis 644 }
genesis 645
genesis 646
genesis 647
genesis 648 inline bool AffinityBugWorkaround(void(*pfn)(void*))
genesis 649 {
genesis 650 return false;
genesis 651 }
genesis 652
genesis 653 inline uint32_t ByteReverse(uint32_t value)
genesis 654 {
genesis 655 value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
genesis 656 return (value<<16) | (value>>16);
genesis 657 }
genesis 658
genesis 659 #endif