// Copyright (c) 2009-2010 Satoshi Nakamoto
-// Copyright (c) 2011 The Bitcoin developers
+// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
-// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_UTIL_H
#define BITCOIN_UTIL_H
+
#include "uint256.h"
#ifndef WIN32
#include <sys/time.h>
#include <sys/resource.h>
#endif
+
#include <map>
#include <vector>
#include <string>
+#ifndef Q_MOC_RUN
#include <boost/thread.hpp>
-#include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
+#include <boost/filesystem.hpp>
+#include <boost/filesystem/path.hpp>
#include <boost/date_time/gregorian/gregorian_types.hpp>
#include <boost/date_time/posix_time/posix_time_types.hpp>
+#endif
-#include <openssl/sha.h>
-#include <openssl/ripemd.h>
+#include <stdarg.h>
-#include "netbase.h"
+#if defined(__USE_MINGW_ANSI_STDIO)
+#undef __USE_MINGW_ANSI_STDIO // This constant forces MinGW to conduct stupid behavior
+#endif
+#include <inttypes.h>
-typedef long long int64;
-typedef unsigned long long uint64;
+#include "netbase.h" // for AddTimeData
+
+static const int32_t nOneHour = 60 * 60;
+static const int32_t nOneDay = 24 * 60 * 60;
+static const int64_t nOneWeek = 7 * 24 * 60 * 60;
+
+static const int64_t COIN = 1000000;
+static const int64_t CENT = 10000;
-#define loop for (;;)
#define BEGIN(a) ((char*)&(a))
#define END(a) ((char*)&((&(a))[1]))
#define UBEGIN(a) ((unsigned char*)&(a))
#define UEND(a) ((unsigned char*)&((&(a))[1]))
#define ARRAYLEN(array) (sizeof(array)/sizeof((array)[0]))
-#define printf OutputDebugStringF
-#ifdef snprintf
-#undef snprintf
+#define UVOIDBEGIN(a) ((void*)&(a))
+#define CVOIDBEGIN(a) ((const void*)&(a))
+#define UINTBEGIN(a) ((uint32_t*)&(a))
+#define CUINTBEGIN(a) ((const uint32_t*)&(a))
+
+#ifndef THROW_WITH_STACKTRACE
+#define THROW_WITH_STACKTRACE(exception) \
+{ \
+ LogStackTrace(); \
+ throw (exception); \
+}
+void LogStackTrace();
#endif
-#define snprintf my_snprintf
-#ifndef PRI64d
#if defined(_MSC_VER) || defined(__MSVCRT__)
-#define PRI64d "I64d"
-#define PRI64u "I64u"
-#define PRI64x "I64x"
-#else
-#define PRI64d "lld"
-#define PRI64u "llu"
-#define PRI64x "llx"
+ /* Silence compiler warnings on Windows
+ related to MinGWs inttypes.h */
+ #undef PRIu64
+ #undef PRId64
+ #undef PRIx64
+
+ #define PRIu64 "I64u"
+ #define PRId64 "I64d"
+ #define PRIx64 "I64x"
+
#endif
+
+/* Format characters for (s)size_t and ptrdiff_t */
+#if defined(_MSC_VER) || defined(__MSVCRT__)
+ /* (s)size_t and ptrdiff_t have the same size specifier in MSVC:
+ http://msdn.microsoft.com/en-us/library/tcxf1dw6%28v=vs.100%29.aspx
+ */
+ #define PRIszx "Ix"
+ #define PRIszu "Iu"
+ #define PRIszd "Id"
+ #define PRIpdx "Ix"
+ #define PRIpdu "Iu"
+ #define PRIpdd "Id"
+#else /* C99 standard */
+ #define PRIszx "zx"
+ #define PRIszu "zu"
+ #define PRIszd "zd"
+ #define PRIpdx "tx"
+ #define PRIpdu "tu"
+ #define PRIpdd "td"
#endif
// This is needed because the foreach macro can't get over the comma in pair<t1, t2>
#define S_IRUSR 0400
#define S_IWUSR 0200
#endif
-#define unlink _unlink
#else
-#define _vsnprintf(a,b,c,d) vsnprintf(a,b,c,d)
-#define strlwr(psz) to_lower(psz)
-#define _strlwr(psz) to_lower(psz)
#define MAX_PATH 1024
-#define Beep(n1,n2) (0)
-inline void Sleep(int64 n)
+inline void Sleep(int64_t n)
{
- boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n));
+ /*Boost has a year 2038 problem— if the request sleep time is past epoch+2^31 seconds the sleep returns instantly.
+ So we clamp our sleeps here to 10 years and hope that boost is fixed by 2028.*/
+ boost::thread::sleep(boost::get_system_time() + boost::posix_time::milliseconds(n>315576000000LL?315576000000LL:n));
}
#endif
-#if !defined(QT_GUI)
-inline const char* _(const char* psz)
-{
- return psz;
-}
+/* This GNU C extension enables the compiler to check the format string against the parameters provided.
+ * X is the number of the "format string" parameter, and Y is the number of the first variadic parameter.
+ * Parameters count from 1.
+ */
+#ifdef __GNUC__
+#define ATTR_WARN_PRINTF(X,Y) __attribute__((format(printf,X,Y)))
+#else
+#define ATTR_WARN_PRINTF(X,Y)
#endif
-
extern std::map<std::string, std::string> mapArgs;
extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
extern bool fDebug;
+extern bool fDebugNet;
extern bool fPrintToConsole;
extern bool fPrintToDebugger;
-extern char pszSetDataDir[MAX_PATH];
extern bool fRequestShutdown;
extern bool fShutdown;
extern bool fDaemon;
extern bool fTestNet;
extern bool fNoListen;
extern bool fLogTimestamps;
+extern bool fReopenDebugLog;
void RandAddSeed();
void RandAddSeedPerfmon();
-int OutputDebugStringF(const char* pszFormat, ...);
-int my_snprintf(char* buffer, size_t limit, const char* format, ...);
-std::string strprintf(const std::string &format, ...);
-bool error(const std::string &format, ...);
+int ATTR_WARN_PRINTF(1,2) OutputDebugStringF(const char* pszFormat, ...);
+
+/*
+ Rationale for the real_strprintf / strprintf construction:
+ It is not allowed to use va_start with a pass-by-reference argument.
+ (C++ standard, 18.7, paragraph 3). Use a dummy argument to work around this, and use a
+ macro to keep similar semantics.
+*/
+
+/** Overload strprintf for char*, so that GCC format type warnings can be given */
+std::string ATTR_WARN_PRINTF(1,3) real_strprintf(const char *format, int dummy, ...);
+/** Overload strprintf for std::string, to be able to use it with _ (translation).
+ * This will not support GCC format type warnings (-Wformat) so be careful.
+ */
+std::string real_strprintf(const std::string &format, int dummy, ...);
+#define strprintf(format, ...) real_strprintf(format, 0, __VA_ARGS__)
+std::string vstrprintf(const char *format, va_list ap);
+
+bool ATTR_WARN_PRINTF(1,2) error(const char *format, ...);
+
+/* Redefine printf so that it directs output to debug.log
+ *
+ * Do this *after* defining the other printf-like functions, because otherwise the
+ * __attribute__((format(printf,X,Y))) gets expanded to __attribute__((format(OutputDebugStringF,X,Y)))
+ * which confuses gcc.
+ */
+#define printf OutputDebugStringF
+
void LogException(std::exception* pex, const char* pszThread);
void PrintException(std::exception* pex, const char* pszThread);
void PrintExceptionContinue(std::exception* pex, const char* pszThread);
void ParseString(const std::string& str, char c, std::vector<std::string>& v);
-std::string FormatMoney(int64 n, bool fPlus=false);
-bool ParseMoney(const std::string& str, int64& nRet);
-bool ParseMoney(const char* pszIn, int64& nRet);
+std::string FormatMoney(int64_t n, bool fPlus=false);
+bool ParseMoney(const std::string& str, int64_t& nRet);
+bool ParseMoney(const char* pszIn, int64_t& nRet);
std::vector<unsigned char> ParseHex(const char* psz);
std::vector<unsigned char> ParseHex(const std::string& str);
+bool IsHex(const std::string& str);
std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
std::string DecodeBase64(const std::string& str);
std::string EncodeBase64(const unsigned char* pch, size_t len);
std::string EncodeBase64(const std::string& str);
-void ParseParameters(int argc, char* argv[]);
+std::vector<unsigned char> DecodeBase32(const char* p, bool* pfInvalid = NULL);
+std::string DecodeBase32(const std::string& str);
+std::string EncodeBase32(const unsigned char* pch, size_t len);
+std::string EncodeBase32(const std::string& str);
+std::string EncodeDumpTime(int64_t nTime);
+int64_t DecodeDumpTime(const std::string& s);
+std::string EncodeDumpString(const std::string &str);
+std::string DecodeDumpString(const std::string &str);
+void ParseParameters(int argc, const char*const argv[]);
bool WildcardMatch(const char* psz, const char* mask);
bool WildcardMatch(const std::string& str, const std::string& mask);
+void FileCommit(FILE *fileout);
int GetFilesize(FILE* file);
-void GetDataDir(char* pszDirRet);
-std::string GetConfigFile();
-std::string GetPidFile();
-void CreatePidFile(std::string pidFile, pid_t pid);
+bool RenameOver(boost::filesystem::path src, boost::filesystem::path dest);
+boost::filesystem::path GetDefaultDataDir();
+const boost::filesystem::path &GetDataDir(bool fNetSpecific = true);
+boost::filesystem::path GetConfigFile();
+boost::filesystem::path GetPidFile();
+#ifndef WIN32
+void CreatePidFile(const boost::filesystem::path &path, pid_t pid);
+#endif
void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
#ifdef WIN32
-std::string MyGetSpecialFolderPath(int nFolder, bool fCreate);
+boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
#endif
-std::string GetDefaultDataDir();
-std::string GetDataDir();
void ShrinkDebugFile();
int GetRandInt(int nMax);
-uint64 GetRand(uint64 nMax);
-int64 GetTime();
-void SetMockTime(int64 nMockTimeIn);
-int64 GetAdjustedTime();
+uint64_t GetRand(uint64_t nMax);
+uint256 GetRandHash();
+int64_t GetTime();
+int64_t GetTimeMillis();
+int64_t GetTimeMicros();
+
+int64_t GetAdjustedTime();
+int64_t GetTimeOffset();
+int64_t GetNodesOffset();
std::string FormatFullVersion();
std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
-void AddTimeData(const CNetAddr& ip, int64 nTime);
+void AddTimeData(const CNetAddr& ip, int64_t nTime);
+void runCommand(std::string strCommand);
-
-
-
-// Wrapper to automatically initialize mutex
-class CCriticalSection
-{
-protected:
- boost::interprocess::interprocess_recursive_mutex mutex;
-public:
- explicit CCriticalSection() { }
- ~CCriticalSection() { }
- void Enter(const char* pszName, const char* pszFile, int nLine);
- void Leave();
- bool TryEnter(const char* pszName, const char* pszFile, int nLine);
-};
-
-// Automatically leave critical section when leaving block, needed for exception safety
-class CCriticalBlock
+inline std::string i64tostr(int64_t n)
{
-protected:
- CCriticalSection* pcs;
-
-public:
- CCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
- {
- pcs = &csIn;
- pcs->Enter(pszName, pszFile, nLine);
- }
-
- operator bool() const
- {
- return true;
- }
-
- ~CCriticalBlock()
- {
- pcs->Leave();
- }
-};
-
-#define CRITICAL_BLOCK(cs) \
- if (CCriticalBlock criticalblock = CCriticalBlock(cs, #cs, __FILE__, __LINE__))
-
-class CTryCriticalBlock
-{
-protected:
- CCriticalSection* pcs;
-
-public:
- CTryCriticalBlock(CCriticalSection& csIn, const char* pszName, const char* pszFile, int nLine)
- {
- pcs = (csIn.TryEnter(pszName, pszFile, nLine) ? &csIn : NULL);
- }
-
- operator bool() const
- {
- return Entered();
- }
-
- ~CTryCriticalBlock()
- {
- if (pcs)
- {
- pcs->Leave();
- }
- }
- bool Entered() const { return pcs != NULL; }
-};
-
-#define TRY_CRITICAL_BLOCK(cs) \
- if (CTryCriticalBlock criticalblock = CTryCriticalBlock(cs, #cs, __FILE__, __LINE__))
-
-
-
-
-
-
-// This is exactly like std::string, but with a custom allocator.
-// (secure_allocator<> is defined in serialize.h)
-typedef std::basic_string<char, std::char_traits<char>, secure_allocator<char> > SecureString;
-
-
-
-
-
-inline std::string i64tostr(int64 n)
-{
- return strprintf("%"PRI64d, n);
+ return strprintf("%" PRId64, n);
}
inline std::string itostr(int n)
return strprintf("%d", n);
}
-inline int64 atoi64(const char* psz)
+inline int64_t atoi64(const char* psz)
{
#ifdef _MSC_VER
return _atoi64(psz);
#endif
}
-inline int64 atoi64(const std::string& str)
+inline int64_t atoi64(const std::string& str)
{
#ifdef _MSC_VER
return _atoi64(str.c_str());
#endif
}
+inline int32_t strtol(const char* psz)
+{
+ return strtol(psz, NULL, 10);
+}
+
+inline int32_t strtol(const std::string& str)
+{
+ return strtol(str.c_str(), NULL, 10);
+}
+
+inline uint32_t strtoul(const char* psz)
+{
+ return strtoul(psz, NULL, 10);
+}
+
+inline uint32_t strtoul(const std::string& str)
+{
+ return strtoul(str.c_str(), NULL, 10);
+}
+
inline int atoi(const std::string& str)
{
return atoi(str.c_str());
return (int)(d > 0 ? d + 0.5 : d - 0.5);
}
-inline int64 roundint64(double d)
+inline int64_t roundint64(double d)
{
- return (int64)(d > 0 ? d + 0.5 : d - 0.5);
+ return (int64_t)(d > 0 ? d + 0.5 : d - 0.5);
}
-inline int64 abs64(int64 n)
+inline int64_t abs64(int64_t n)
{
return (n >= 0 ? n : -n);
}
-template<typename T>
-std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
+inline std::string leftTrim(std::string src, char chr)
{
- if (itbegin == itend)
- return "";
- const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
- const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
- std::string str;
- str.reserve((pend-pbegin) * (fSpaces ? 3 : 2));
- for (const unsigned char* p = pbegin; p != pend; p++)
- str += strprintf((fSpaces && p != pend-1 ? "%02x " : "%02x"), *p);
- return str;
-}
+ std::string::size_type pos = src.find_first_not_of(chr, 0);
-inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
-{
- return HexStr(vch.begin(), vch.end(), fSpaces);
+ if(pos > 0)
+ src.erase(0, pos);
+
+ return src;
}
template<typename T>
-std::string HexNumStr(const T itbegin, const T itend, bool f0x=true)
+std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
{
- if (itbegin == itend)
- return "";
- const unsigned char* pbegin = (const unsigned char*)&itbegin[0];
- const unsigned char* pend = pbegin + (itend - itbegin) * sizeof(itbegin[0]);
- std::string str = (f0x ? "0x" : "");
- str.reserve(str.size() + (pend-pbegin) * 2);
- for (const unsigned char* p = pend-1; p >= pbegin; p--)
- str += strprintf("%02x", *p);
- return str;
+ std::string rv;
+ static const char hexmap[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
+ '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
+ rv.reserve((itend-itbegin)*3);
+ for(T it = itbegin; it < itend; ++it)
+ {
+ unsigned char val = (unsigned char)(*it);
+ if(fSpaces && it != itbegin)
+ rv.push_back(' ');
+ rv.push_back(hexmap[val>>4]);
+ rv.push_back(hexmap[val&15]);
+ }
+
+ return rv;
}
-inline std::string HexNumStr(const std::vector<unsigned char>& vch, bool f0x=true)
+inline std::string HexStr(const std::vector<unsigned char>& vch, bool fSpaces=false)
{
- return HexNumStr(vch.begin(), vch.end(), f0x);
+ return HexStr(vch.begin(), vch.end(), fSpaces);
}
template<typename T>
printf(pszFormat, HexStr(vch, fSpaces).c_str());
}
-inline int64 GetPerformanceCounter()
+inline int64_t GetPerformanceCounter()
{
- int64 nCounter = 0;
+ int64_t nCounter = 0;
#ifdef WIN32
QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
#else
timeval t;
gettimeofday(&t, NULL);
- nCounter = t.tv_sec * 1000000 + t.tv_usec;
+ nCounter = (int64_t) t.tv_sec * 1000000 + t.tv_usec;
#endif
return nCounter;
}
-inline int64 GetTimeMillis()
+inline int64_t GetTimeMillis()
{
- return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
+ return (boost::posix_time::microsec_clock::universal_time() -
boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
}
-inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
+inline int64_t GetTimeMicros()
+{
+ return (boost::posix_time::microsec_clock::universal_time() -
+ boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_microseconds();
+}
+
+std::string DateTimeStrFormat(const char* pszFormat, int64_t nTime);
+
+static const std::string strTimestampFormat = "%Y-%m-%d %H:%M:%S UTC";
+inline std::string DateTimeStrFormat(int64_t nTime)
{
- time_t n = nTime;
- struct tm* ptmTime = gmtime(&n);
- char pszTime[200];
- strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
- return pszTime;
+ return DateTimeStrFormat(strTimestampFormat.c_str(), nTime);
}
+
template<typename T>
void skipspaces(T& it)
{
#endif
}
-inline std::string GetArg(const std::string& strArg, const std::string& strDefault)
-{
- if (mapArgs.count(strArg))
- return mapArgs[strArg];
- return strDefault;
-}
+/**
+ * Return string argument or default value
+ *
+ * @param strArg Argument to get (e.g. "-foo")
+ * @param default (e.g. "1")
+ * @return command-line argument or default value
+ */
+std::string GetArg(const std::string& strArg, const std::string& strDefault);
-inline int64 GetArg(const std::string& strArg, int64 nDefault)
-{
- if (mapArgs.count(strArg))
- return atoi64(mapArgs[strArg]);
- return nDefault;
-}
+/**
+ * Return 64-bit integer argument or default value
+ *
+ * @param strArg Argument to get (e.g. "-foo")
+ * @param default (e.g. 1)
+ * @return command-line argument (0 if invalid number) or default value
+ */
+int64_t GetArg(const std::string& strArg, int64_t nDefault);
-inline bool GetBoolArg(const std::string& strArg, bool fDefault=false)
-{
- if (mapArgs.count(strArg))
- {
- if (mapArgs[strArg].empty())
- return true;
- return (atoi(mapArgs[strArg]) != 0);
- }
- return fDefault;
-}
+/**
+ * Return 32-bit integer argument or default value
+ *
+ * @param strArg Argument to get (e.g. "-foo")
+ * @param default (e.g. 1)
+ * @return command-line argument (0 if invalid number) or default value
+ */
+int32_t GetArgInt(const std::string& strArg, int32_t nDefault);
+
+/**
+ * Return 32-bit unsigned integer argument or default value
+ *
+ * @param strArg Argument to get (e.g. "-foo")
+ * @param default (e.g. 1)
+ * @return command-line argument (0 if invalid number) or default value
+ */
+uint32_t GetArgUInt(const std::string& strArg, uint32_t nDefault);
+
+/**
+ * Return boolean argument or default value
+ *
+ * @param strArg Argument to get (e.g. "-foo")
+ * @param default (true or false)
+ * @return command-line argument or default value
+ */
+bool GetBoolArg(const std::string& strArg, bool fDefault=false);
/**
* Set an argument if it doesn't already have a value
* @param fValue Value (e.g. false)
* @return true if argument gets set, false if it already had a value
*/
-bool SoftSetArg(const std::string& strArg, bool fValue);
-
-
-
-
-
-
-
-
-
-// Randomize the stack to help protect against buffer overrun exploits
-#define IMPLEMENT_RANDOMIZE_STACK(ThreadFn) \
- { \
- static char nLoops; \
- if (nLoops <= 0) \
- nLoops = GetRand(20) + 1; \
- if (nLoops-- > 1) \
- { \
- ThreadFn; \
- return; \
- } \
- }
-
-#define CATCH_PRINT_EXCEPTION(pszFn) \
- catch (std::exception& e) { \
- PrintException(&e, (pszFn)); \
- } catch (...) { \
- PrintException(NULL, (pszFn)); \
- }
-
-
-
-
-
-
-
-
-
-
-template<typename T1>
-inline uint256 Hash(const T1 pbegin, const T1 pend)
-{
- static unsigned char pblank[1];
- uint256 hash1;
- SHA256((pbegin == pend ? pblank : (unsigned char*)&pbegin[0]), (pend - pbegin) * sizeof(pbegin[0]), (unsigned char*)&hash1);
- uint256 hash2;
- SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
- return hash2;
-}
+bool SoftSetBoolArg(const std::string& strArg, bool fValue);
-template<typename T1, typename T2>
-inline uint256 Hash(const T1 p1begin, const T1 p1end,
- const T2 p2begin, const T2 p2end)
-{
- static unsigned char pblank[1];
- uint256 hash1;
- SHA256_CTX ctx;
- SHA256_Init(&ctx);
- SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
- SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
- SHA256_Final((unsigned char*)&hash1, &ctx);
- uint256 hash2;
- SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
- return hash2;
-}
-
-template<typename T1, typename T2, typename T3>
-inline uint256 Hash(const T1 p1begin, const T1 p1end,
- const T2 p2begin, const T2 p2end,
- const T3 p3begin, const T3 p3end)
-{
- static unsigned char pblank[1];
- uint256 hash1;
- SHA256_CTX ctx;
- SHA256_Init(&ctx);
- SHA256_Update(&ctx, (p1begin == p1end ? pblank : (unsigned char*)&p1begin[0]), (p1end - p1begin) * sizeof(p1begin[0]));
- SHA256_Update(&ctx, (p2begin == p2end ? pblank : (unsigned char*)&p2begin[0]), (p2end - p2begin) * sizeof(p2begin[0]));
- SHA256_Update(&ctx, (p3begin == p3end ? pblank : (unsigned char*)&p3begin[0]), (p3end - p3begin) * sizeof(p3begin[0]));
- SHA256_Final((unsigned char*)&hash1, &ctx);
- uint256 hash2;
- SHA256((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
- return hash2;
-}
-
-template<typename T>
-uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL_VERSION)
-{
- // Most of the time is spent allocating and deallocating CDataStream's
- // buffer. If this ever needs to be optimized further, make a CStaticStream
- // class with its buffer on the stack.
- CDataStream ss(nType, nVersion);
- ss.reserve(10000);
- ss << obj;
- return Hash(ss.begin(), ss.end());
-}
-
-inline uint160 Hash160(const std::vector<unsigned char>& vch)
+/**
+ * Timing-attack-resistant comparison.
+ * Takes time proportional to length
+ * of first argument.
+ */
+template <typename T>
+bool TimingResistantEqual(const T& a, const T& b)
{
- uint256 hash1;
- SHA256(&vch[0], vch.size(), (unsigned char*)&hash1);
- uint160 hash2;
- RIPEMD160((unsigned char*)&hash1, sizeof(hash1), (unsigned char*)&hash2);
- return hash2;
+ if (b.size() == 0) return a.size() == 0;
+ size_t accumulator = a.size() ^ b.size();
+ for (size_t i = 0; i < a.size(); i++)
+ accumulator |= a[i] ^ b[i%b.size()];
+ return accumulator == 0;
}
-
-// Median filter over a stream of values
-// Returns the median of the last N numbers
+/** Median filter over a stream of values.
+ * Returns the median of the last N numbers
+ */
template <typename T> class CMedianFilter
{
private:
std::vector<T> vValues;
std::vector<T> vSorted;
- int nSize;
+ unsigned int nSize;
public:
- CMedianFilter(int size, T initial_value):
+ CMedianFilter(unsigned int size, T initial_value):
nSize(size)
{
vValues.reserve(size);
vValues.push_back(initial_value);
vSorted = vValues;
}
-
+
void input(T value)
{
if(vValues.size() == nSize)
T median() const
{
- int size = vSorted.size();
+ size_t size = vSorted.size();
assert(size>0);
if(size & 1) // Odd number of elements
{
int size() const
{
- return vValues.size();
+ return static_cast<int>(vValues.size());
}
std::vector<T> sorted () const
}
};
+bool NewThread(void(*pfn)(void*), void* parg);
-
-
-
-
-
-
-
-
-// Note: It turns out we might have been able to use boost::thread
-// by using TerminateThread(boost::thread.native_handle(), 0);
#ifdef WIN32
-typedef HANDLE pthread_t;
-
-inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
-{
- DWORD nUnused = 0;
- HANDLE hthread =
- CreateThread(
- NULL, // default security
- 0, // inherit stack size from parent
- (LPTHREAD_START_ROUTINE)pfn, // function pointer
- parg, // argument
- 0, // creation option, start immediately
- &nUnused); // thread identifier
- if (hthread == NULL)
- {
- printf("Error: CreateThread() returned %d\n", GetLastError());
- return (pthread_t)0;
- }
- if (!fWantHandle)
- {
- CloseHandle(hthread);
- return (pthread_t)-1;
- }
- return hthread;
-}
-
inline void SetThreadPriority(int nPriority)
{
SetThreadPriority(GetCurrentThread(), nPriority);
}
#else
-inline pthread_t CreateThread(void(*pfn)(void*), void* parg, bool fWantHandle=false)
-{
- pthread_t hthread = 0;
- int ret = pthread_create(&hthread, NULL, (void*(*)(void*))pfn, parg);
- if (ret != 0)
- {
- printf("Error: pthread_create() returned %d\n", ret);
- return (pthread_t)0;
- }
- if (!fWantHandle)
- {
- pthread_detach(hthread);
- return (pthread_t)-1;
- }
- return hthread;
-}
#define THREAD_PRIORITY_LOWEST PRIO_MAX
#define THREAD_PRIORITY_BELOW_NORMAL 2
#endif
}
-inline bool TerminateThread(pthread_t hthread, unsigned int nExitCode)
-{
- return (pthread_cancel(hthread) == 0);
-}
-
inline void ExitThread(size_t nExitCode)
{
pthread_exit((void*)nExitCode);
}
#endif
-
-
-
-
-inline bool AffinityBugWorkaround(void(*pfn)(void*))
-{
-#ifdef WIN32
- // Sometimes after a few hours affinity gets stuck on one processor
- DWORD_PTR dwProcessAffinityMask = -1;
- DWORD_PTR dwSystemAffinityMask = -1;
- GetProcessAffinityMask(GetCurrentProcess(), &dwProcessAffinityMask, &dwSystemAffinityMask);
- DWORD dwPrev1 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
- DWORD dwPrev2 = SetThreadAffinityMask(GetCurrentThread(), dwProcessAffinityMask);
- if (dwPrev2 != dwProcessAffinityMask)
- {
- printf("AffinityBugWorkaround() : SetThreadAffinityMask=%d, ProcessAffinityMask=%d, restarting thread\n", dwPrev2, dwProcessAffinityMask);
- if (!CreateThread(pfn, NULL))
- printf("Error: CreateThread() failed\n");
- return true;
- }
-#endif
- return false;
-}
+void RenameThread(const char* name);
inline uint32_t ByteReverse(uint32_t value)
{
- value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
- return (value<<16) | (value>>16);
+ value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
+ return (value<<16) | (value>>16);
}
#endif
git://git.novaco.in / novacoin.git / blobdiff