mirror of
https://github.com/bitcoin/bitcoin.git
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400 lines
11 KiB
C++
400 lines
11 KiB
C++
// Copyright (c) 2009 Satoshi Nakamoto
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// Distributed under the MIT/X11 software license, see the accompanying
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// file license.txt or http://www.opensource.org/licenses/mit-license.php.
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#if defined(_MSC_VER) || defined(__BORLANDC__)
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typedef __int64 int64;
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typedef unsigned __int64 uint64;
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#else
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typedef long long int64;
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typedef unsigned long long uint64;
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#endif
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#if defined(_MSC_VER) && _MSC_VER < 1300
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#define for if (false) ; else for
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#endif
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#ifndef _MSC_VER
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#define __forceinline inline
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#endif
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#define foreach BOOST_FOREACH
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#define loop for (;;)
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#define BEGIN(a) ((char*)&(a))
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#define END(a) ((char*)&((&(a))[1]))
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#define UBEGIN(a) ((unsigned char*)&(a))
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#define UEND(a) ((unsigned char*)&((&(a))[1]))
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#define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
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#ifdef _WINDOWS
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#define printf OutputDebugStringF
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#endif
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#ifdef snprintf
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#undef snprintf
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#endif
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#define snprintf my_snprintf
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#ifndef PRId64
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#if defined(_MSC_VER) || defined(__BORLANDC__) || defined(__MSVCRT__)
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#define PRId64 "I64d"
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#define PRIu64 "I64u"
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#define PRIx64 "I64x"
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#else
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#define PRId64 "lld"
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#define PRIu64 "llu"
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#define PRIx64 "llx"
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#endif
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#endif
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// This is needed because the foreach macro can't get over the comma in pair<t1, t2>
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#define PAIRTYPE(t1, t2) pair<t1, t2>
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// Used to bypass the rule against non-const reference to temporary
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// where it makes sense with wrappers such as CFlatData or CTxDB
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template<typename T>
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inline T& REF(const T& val)
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{
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return (T&)val;
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}
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extern bool fDebug;
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void RandAddSeed(bool fPerfmon=false);
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int my_snprintf(char* buffer, size_t limit, const char* format, ...);
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string strprintf(const char* format, ...);
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bool error(const char* format, ...);
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void PrintException(std::exception* pex, const char* pszThread);
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void ParseString(const string& str, char c, vector<string>& v);
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string FormatMoney(int64 n, bool fPlus=false);
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bool ParseMoney(const char* pszIn, int64& nRet);
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bool FileExists(const char* psz);
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int GetFilesize(FILE* file);
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uint64 GetRand(uint64 nMax);
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int64 GetTime();
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int64 GetAdjustedTime();
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void AddTimeData(unsigned int ip, int64 nTime);
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// Wrapper to automatically initialize critical section
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// Could use wxCriticalSection for portability, but it doesn't support TryEnterCriticalSection
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class CCriticalSection
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{
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protected:
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CRITICAL_SECTION cs;
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public:
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char* pszFile;
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int nLine;
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explicit CCriticalSection() { InitializeCriticalSection(&cs); }
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~CCriticalSection() { DeleteCriticalSection(&cs); }
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void Enter() { EnterCriticalSection(&cs); }
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void Leave() { LeaveCriticalSection(&cs); }
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bool TryEnter() { return TryEnterCriticalSection(&cs); }
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CRITICAL_SECTION* operator&() { return &cs; }
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};
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// Automatically leave critical section when leaving block, needed for exception safety
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class CCriticalBlock
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{
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protected:
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CRITICAL_SECTION* pcs;
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public:
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CCriticalBlock(CRITICAL_SECTION& csIn) { pcs = &csIn; EnterCriticalSection(pcs); }
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CCriticalBlock(CCriticalSection& csIn) { pcs = &csIn; EnterCriticalSection(pcs); }
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~CCriticalBlock() { LeaveCriticalSection(pcs); }
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};
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// WARNING: This will catch continue and break!
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// break is caught with an assertion, but there's no way to detect continue.
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// I'd rather be careful than suffer the other more error prone syntax.
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// The compiler will optimise away all this loop junk.
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#define CRITICAL_BLOCK(cs) \
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for (bool fcriticalblockonce=true; fcriticalblockonce; assert(("break caught by CRITICAL_BLOCK!", !fcriticalblockonce)), fcriticalblockonce=false) \
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for (CCriticalBlock criticalblock(cs); fcriticalblockonce && (cs.pszFile=__FILE__, cs.nLine=__LINE__, true); fcriticalblockonce=false, cs.pszFile=NULL, cs.nLine=0)
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class CTryCriticalBlock
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{
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protected:
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CRITICAL_SECTION* pcs;
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public:
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CTryCriticalBlock(CRITICAL_SECTION& csIn) { pcs = (TryEnterCriticalSection(&csIn) ? &csIn : NULL); }
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CTryCriticalBlock(CCriticalSection& csIn) { pcs = (TryEnterCriticalSection(&csIn) ? &csIn : NULL); }
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~CTryCriticalBlock() { if (pcs) LeaveCriticalSection(pcs); }
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bool Entered() { return pcs != NULL; }
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};
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#define TRY_CRITICAL_BLOCK(cs) \
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for (bool fcriticalblockonce=true; fcriticalblockonce; assert(("break caught by TRY_CRITICAL_BLOCK!", !fcriticalblockonce)), fcriticalblockonce=false) \
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for (CTryCriticalBlock criticalblock(cs); fcriticalblockonce && (fcriticalblockonce = criticalblock.Entered()) && (cs.pszFile=__FILE__, cs.nLine=__LINE__, true); fcriticalblockonce=false, cs.pszFile=NULL, cs.nLine=0)
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inline string i64tostr(int64 n)
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{
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return strprintf("%"PRId64, n);
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}
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inline string itostr(int n)
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{
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return strprintf("%d", n);
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}
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inline int64 atoi64(const char* psz)
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{
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#ifdef _MSC_VER
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return _atoi64(psz);
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#else
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return strtoll(psz, NULL, 10);
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#endif
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}
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inline int64 atoi64(const string& str)
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{
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#ifdef _MSC_VER
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return _atoi64(str.c_str());
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#else
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return strtoll(str.c_str(), NULL, 10);
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#endif
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}
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inline int atoi(const string& str)
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{
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return atoi(str.c_str());
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}
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inline int roundint(double d)
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{
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return (int)(d > 0 ? d + 0.5 : d - 0.5);
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}
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template<typename T>
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string HexStr(const T itbegin, const T itend, bool fSpaces=true)
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{
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const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
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const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
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string str;
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for (const unsigned char* p = pbegin; p != pend; p++)
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str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
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return str;
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}
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template<typename T>
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string HexNumStr(const T itbegin, const T itend, bool f0x=true)
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{
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const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
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const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
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string str = (f0x ? "0x" : "");
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for (const unsigned char* p = pend-1; p >= pbegin; p--)
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str += strprintf("%02X", *p);
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return str;
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}
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template<typename T>
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void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
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{
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printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
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}
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inline int OutputDebugStringF(const char* pszFormat, ...)
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{
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#ifdef __WXDEBUG__
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// log file
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FILE* fileout = fopen("debug.log", "a");
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if (fileout)
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{
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va_list arg_ptr;
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va_start(arg_ptr, pszFormat);
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vfprintf(fileout, pszFormat, arg_ptr);
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va_end(arg_ptr);
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fclose(fileout);
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}
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// accumulate a line at a time
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static CCriticalSection cs_OutputDebugStringF;
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CRITICAL_BLOCK(cs_OutputDebugStringF)
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{
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static char pszBuffer[50000];
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static char* pend;
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if (pend == NULL)
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pend = pszBuffer;
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va_list arg_ptr;
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va_start(arg_ptr, pszFormat);
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int limit = END(pszBuffer) - pend - 2;
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int ret = _vsnprintf(pend, limit, pszFormat, arg_ptr);
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va_end(arg_ptr);
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if (ret < 0 || ret >= limit)
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{
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pend = END(pszBuffer) - 2;
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*pend++ = '\n';
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}
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else
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pend += ret;
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*pend = '\0';
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char* p1 = pszBuffer;
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char* p2;
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while (p2 = strchr(p1, '\n'))
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{
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p2++;
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char c = *p2;
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*p2 = '\0';
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OutputDebugString(p1);
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*p2 = c;
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p1 = p2;
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}
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if (p1 != pszBuffer)
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memmove(pszBuffer, p1, pend - p1 + 1);
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pend -= (p1 - pszBuffer);
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return ret;
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}
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#endif
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if (!wxTheApp)
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{
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// print to console
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va_list arg_ptr;
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va_start(arg_ptr, pszFormat);
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vprintf(pszFormat, arg_ptr);
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va_end(arg_ptr);
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}
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return 0;
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}
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inline void heapchk()
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{
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if (_heapchk() != _HEAPOK)
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DebugBreak();
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}
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// Randomize the stack to help protect against buffer overrun exploits
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#define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
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{ \
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static char nLoops; \
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if (nLoops <= 0) \
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nLoops = GetRand(50) + 1; \
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if (nLoops-- > 1) \
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{ \
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ThreadFn; \
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return; \
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} \
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}
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#define CATCH_PRINT_EXCEPTION(pszFn) \
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catch (std::exception& e) { \
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PrintException(&e, (pszFn)); \
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} catch (...) { \
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PrintException(NULL, (pszFn)); \
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}
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template<typename T1>
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inline uint256 Hash(const T1 pbegin, const T1 pend)
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{
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uint256 hash1;
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SHA256((unsigned char*)&pbegin[0], (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
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uint256 hash2;
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SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
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return hash2;
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}
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template<typename T1, typename T2>
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inline uint256 Hash(const T1 p1begin, const T1 p1end,
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const T2 p2begin, const T2 p2end)
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{
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uint256 hash1;
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SHA256_CTX ctx;
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SHA256_Init(&ctx);
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SHA256_Update(&ctx, (unsigned char*)&p1begin[0], (p1end - p1begin) * sizeof(p1begin[0]));
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SHA256_Update(&ctx, (unsigned char*)&p2begin[0], (p2end - p2begin) * sizeof(p2begin[0]));
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SHA256_Final((unsigned char*)&hash1, &ctx);
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uint256 hash2;
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SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
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return hash2;
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}
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template<typename T1, typename T2, typename T3>
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inline uint256 Hash(const T1 p1begin, const T1 p1end,
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const T2 p2begin, const T2 p2end,
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const T3 p3begin, const T3 p3end)
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{
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uint256 hash1;
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SHA256_CTX ctx;
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SHA256_Init(&ctx);
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SHA256_Update(&ctx, (unsigned char*)&p1begin[0], (p1end - p1begin) * sizeof(p1begin[0]));
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SHA256_Update(&ctx, (unsigned char*)&p2begin[0], (p2end - p2begin) * sizeof(p2begin[0]));
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SHA256_Update(&ctx, (unsigned char*)&p3begin[0], (p3end - p3begin) * sizeof(p3begin[0]));
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SHA256_Final((unsigned char*)&hash1, &ctx);
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uint256 hash2;
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SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
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return hash2;
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}
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template<typename T>
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uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=VERSION)
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{
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// Most of the time is spent allocating and deallocating CDataStream's
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// buffer. If this ever needs to be optimized further, make a CStaticStream
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// class with its buffer on the stack.
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CDataStream ss(nType, nVersion);
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ss.reserve(10000);
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ss << obj;
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return Hash(ss.begin(), ss.end());
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}
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inline uint160 Hash160(const vector<unsigned char>& vch)
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{
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uint256 hash1;
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SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
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uint160 hash2;
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RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
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return hash2;
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}
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