585 lines
16 KiB
C++
585 lines
16 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2012 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#ifndef BITCOIN_UTIL_H
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#define BITCOIN_UTIL_H
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#include "uint256.h"
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#include <stdarg.h>
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#ifndef WIN32
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#endif
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#include <map>
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#include <list>
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#include <utility>
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#include <vector>
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#include <string>
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#include <boost/version.hpp>
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#include <boost/thread.hpp>
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#include <boost/filesystem.hpp>
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#include <boost/filesystem/path.hpp>
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#include <boost/date_time/gregorian/gregorian_types.hpp>
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#include <boost/date_time/posix_time/posix_time_types.hpp>
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#include "netbase.h" // for AddTimeData
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typedef long long int64;
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typedef unsigned long long uint64;
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static const int64 COIN = 100000000;
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static const int64 CENT = 1000000;
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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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#ifndef PRI64d
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#if defined(_MSC_VER) || defined(__MSVCRT__)
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#define PRI64d "I64d"
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#define PRI64u "I64u"
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#define PRI64x "I64x"
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#else
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#define PRI64d "lld"
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#define PRI64u "llu"
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#define PRI64x "llx"
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#endif
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#endif
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/* Format characters for (s)size_t and ptrdiff_t */
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#if defined(_MSC_VER) || defined(__MSVCRT__)
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/* (s)size_t and ptrdiff_t have the same size specifier in MSVC:
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http://msdn.microsoft.com/en-us/library/tcxf1dw6%28v=vs.100%29.aspx
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*/
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#define PRIszx "Ix"
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#define PRIszu "Iu"
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#define PRIszd "Id"
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#define PRIpdx "Ix"
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#define PRIpdu "Iu"
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#define PRIpdd "Id"
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#else /* C99 standard */
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#define PRIszx "zx"
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#define PRIszu "zu"
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#define PRIszd "zd"
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#define PRIpdx "tx"
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#define PRIpdu "tu"
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#define PRIpdd "td"
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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) std::pair<t1, t2>
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// Align by increasing pointer, must have extra space at end of buffer
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template <size_t nBytes, typename T>
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T* alignup(T* p)
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{
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union
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{
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T* ptr;
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size_t n;
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} u;
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u.ptr = p;
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u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
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return u.ptr;
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}
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#ifdef WIN32
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#define MSG_NOSIGNAL 0
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#define MSG_DONTWAIT 0
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#ifndef S_IRUSR
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#define S_IRUSR 0400
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#define S_IWUSR 0200
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#endif
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#else
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#define MAX_PATH 1024
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#endif
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inline void MilliSleep(int64 n)
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{
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// Boost's sleep_for was uninterruptable when backed by nanosleep from 1.50
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// until fixed in 1.52. Use the deprecated sleep method for the broken case.
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// See: https://svn.boost.org/trac/boost/ticket/7238
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#if BOOST_VERSION >= 105000 && (!defined(BOOST_HAS_NANOSLEEP) || BOOST_VERSION >= 105200)
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boost::this_thread::sleep_for(boost::chrono::milliseconds(n));
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#else
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boost::this_thread::sleep(boost::posix_time::milliseconds(n));
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#endif
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}
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/* This GNU C extension enables the compiler to check the format string against the parameters provided.
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* X is the number of the "format string" parameter, and Y is the number of the first variadic parameter.
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* Parameters count from 1.
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*/
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#ifdef __GNUC__
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#define ATTR_WARN_PRINTF(X,Y) __attribute__((format(printf,X,Y)))
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#else
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#define ATTR_WARN_PRINTF(X,Y)
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#endif
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extern std::map<std::string, std::string> mapArgs;
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extern std::map<std::string, std::vector<std::string> > mapMultiArgs;
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extern bool fDebug;
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extern bool fDebugNet;
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extern bool fPrintToConsole;
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extern bool fPrintToDebugger;
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extern bool fDaemon;
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extern bool fServer;
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extern bool fCommandLine;
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extern std::string strMiscWarning;
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extern bool fTestNet;
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extern bool fNoListen;
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extern bool fLogTimestamps;
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extern volatile bool fReopenDebugLog;
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void RandAddSeed();
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void RandAddSeedPerfmon();
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int ATTR_WARN_PRINTF(1,2) OutputDebugStringF(const char* pszFormat, ...);
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/*
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Rationale for the real_strprintf / strprintf construction:
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It is not allowed to use va_start with a pass-by-reference argument.
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(C++ standard, 18.7, paragraph 3). Use a dummy argument to work around this, and use a
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macro to keep similar semantics.
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*/
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/** Overload strprintf for char*, so that GCC format type warnings can be given */
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std::string ATTR_WARN_PRINTF(1,3) real_strprintf(const char *format, int dummy, ...);
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/** Overload strprintf for std::string, to be able to use it with _ (translation).
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* This will not support GCC format type warnings (-Wformat) so be careful.
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*/
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std::string real_strprintf(const std::string &format, int dummy, ...);
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#define strprintf(format, ...) real_strprintf(format, 0, __VA_ARGS__)
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std::string vstrprintf(const char *format, va_list ap);
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bool ATTR_WARN_PRINTF(1,2) error(const char *format, ...);
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/* Redefine printf so that it directs output to debug.log
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*
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* Do this *after* defining the other printf-like functions, because otherwise the
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* __attribute__((format(printf,X,Y))) gets expanded to __attribute__((format(OutputDebugStringF,X,Y)))
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* which confuses gcc.
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*/
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#define printf OutputDebugStringF
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void LogException(std::exception* pex, const char* pszThread);
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void PrintException(std::exception* pex, const char* pszThread);
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void PrintExceptionContinue(std::exception* pex, const char* pszThread);
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void ParseString(const std::string& str, char c, std::vector<std::string>& v);
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std::string FormatMoney(int64 n, bool fPlus=false);
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bool ParseMoney(const std::string& str, int64& nRet);
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bool ParseMoney(const char* pszIn, int64& nRet);
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std::vector<unsigned char> ParseHex(const char* psz);
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std::vector<unsigned char> ParseHex(const std::string& str);
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bool IsHex(const std::string& str);
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std::vector<unsigned char> DecodeBase64(const char* p, bool* pfInvalid = NULL);
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std::string DecodeBase64(const std::string& str);
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std::string EncodeBase64(const unsigned char* pch, size_t len);
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std::string EncodeBase64(const std::string& str);
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std::vector<unsigned char> DecodeBase32(const char* p, bool* pfInvalid = NULL);
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std::string DecodeBase32(const std::string& str);
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std::string EncodeBase32(const unsigned char* pch, size_t len);
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std::string EncodeBase32(const std::string& str);
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void ParseParameters(int argc, const char*const argv[]);
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bool WildcardMatch(const char* psz, const char* mask);
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bool WildcardMatch(const std::string& str, const std::string& mask);
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void FileCommit(FILE *fileout);
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int GetFilesize(FILE* file);
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bool TruncateFile(FILE *file, unsigned int length);
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int RaiseFileDescriptorLimit(int nMinFD);
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void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length);
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bool RenameOver(boost::filesystem::path src, boost::filesystem::path dest);
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boost::filesystem::path GetDefaultDataDir();
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const boost::filesystem::path &GetDataDir(bool fNetSpecific = true);
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boost::filesystem::path GetConfigFile();
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boost::filesystem::path GetPidFile();
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void CreatePidFile(const boost::filesystem::path &path, pid_t pid);
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void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
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#ifdef WIN32
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boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
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#endif
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boost::filesystem::path GetTempPath();
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void ShrinkDebugFile();
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int GetRandInt(int nMax);
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uint64 GetRand(uint64 nMax);
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uint256 GetRandHash();
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int64 GetTime();
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void SetMockTime(int64 nMockTimeIn);
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int64 GetAdjustedTime();
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int64 GetTimeOffset();
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std::string FormatFullVersion();
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std::string FormatSubVersion(const std::string& name, int nClientVersion, const std::vector<std::string>& comments);
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void AddTimeData(const CNetAddr& ip, int64 nTime);
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void runCommand(std::string strCommand);
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inline std::string i64tostr(int64 n)
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{
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return strprintf("%"PRI64d, n);
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}
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inline std::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 std::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 std::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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inline int64 roundint64(double d)
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{
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return (int64)(d > 0 ? d + 0.5 : d - 0.5);
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}
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inline int64 abs64(int64 n)
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{
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return (n >= 0 ? n : -n);
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}
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template<typename T>
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std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
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{
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std::string rv;
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static const char hexmap[16] = { '0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };
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rv.reserve((itend-itbegin)*3);
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for(T it = itbegin; it < itend; ++it)
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{
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unsigned char val = (unsigned char)(*it);
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if(fSpaces && it != itbegin)
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rv.push_back(' ');
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rv.push_back(hexmap[val>>4]);
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rv.push_back(hexmap[val&15]);
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}
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return rv;
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}
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template<typename T>
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inline std::string HexStr(const T& vch, bool fSpaces=false)
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{
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return HexStr(vch.begin(), vch.end(), fSpaces);
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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 void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
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{
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printf(pszFormat, HexStr(vch, fSpaces).c_str());
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}
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inline int64 GetPerformanceCounter()
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{
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int64 nCounter = 0;
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#ifdef WIN32
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QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
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#else
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timeval t;
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gettimeofday(&t, NULL);
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nCounter = (int64) t.tv_sec * 1000000 + t.tv_usec;
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#endif
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return nCounter;
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}
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inline int64 GetTimeMillis()
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{
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return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
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boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
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}
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inline int64 GetTimeMicros()
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{
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return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
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boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_microseconds();
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}
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inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
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{
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time_t n = nTime;
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struct tm* ptmTime = gmtime(&n);
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char pszTime[200];
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strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
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return pszTime;
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}
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template<typename T>
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void skipspaces(T& it)
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{
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while (isspace(*it))
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++it;
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}
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inline bool IsSwitchChar(char c)
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{
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#ifdef WIN32
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return c == '-' || c == '/';
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#else
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return c == '-';
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#endif
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}
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/**
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* Return string argument or default value
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*
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* @param strArg Argument to get (e.g. "-foo")
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* @param default (e.g. "1")
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* @return command-line argument or default value
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*/
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std::string GetArg(const std::string& strArg, const std::string& strDefault);
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/**
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* Return integer argument or default value
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*
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* @param strArg Argument to get (e.g. "-foo")
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* @param default (e.g. 1)
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* @return command-line argument (0 if invalid number) or default value
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*/
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int64 GetArg(const std::string& strArg, int64 nDefault);
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/**
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* Return boolean argument or default value
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*
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* @param strArg Argument to get (e.g. "-foo")
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* @param default (true or false)
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* @return command-line argument or default value
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*/
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bool GetBoolArg(const std::string& strArg, bool fDefault);
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/**
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* Set an argument if it doesn't already have a value
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*
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* @param strArg Argument to set (e.g. "-foo")
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* @param strValue Value (e.g. "1")
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* @return true if argument gets set, false if it already had a value
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*/
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bool SoftSetArg(const std::string& strArg, const std::string& strValue);
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/**
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* Set a boolean argument if it doesn't already have a value
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*
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* @param strArg Argument to set (e.g. "-foo")
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* @param fValue Value (e.g. false)
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* @return true if argument gets set, false if it already had a value
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*/
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bool SoftSetBoolArg(const std::string& strArg, bool fValue);
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/**
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* MWC RNG of George Marsaglia
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* This is intended to be fast. It has a period of 2^59.3, though the
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* least significant 16 bits only have a period of about 2^30.1.
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*
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* @return random value
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*/
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extern uint32_t insecure_rand_Rz;
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extern uint32_t insecure_rand_Rw;
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static inline uint32_t insecure_rand(void)
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{
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insecure_rand_Rz = 36969 * (insecure_rand_Rz & 65535) + (insecure_rand_Rz >> 16);
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insecure_rand_Rw = 18000 * (insecure_rand_Rw & 65535) + (insecure_rand_Rw >> 16);
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return (insecure_rand_Rw << 16) + insecure_rand_Rz;
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}
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/**
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* Seed insecure_rand using the random pool.
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* @param Deterministic Use a determinstic seed
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*/
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void seed_insecure_rand(bool fDeterministic=false);
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/** Median filter over a stream of values.
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* Returns the median of the last N numbers
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*/
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template <typename T> class CMedianFilter
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{
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private:
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std::vector<T> vValues;
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std::vector<T> vSorted;
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unsigned int nSize;
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public:
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CMedianFilter(unsigned int size, T initial_value):
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nSize(size)
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{
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vValues.reserve(size);
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vValues.push_back(initial_value);
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vSorted = vValues;
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}
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void input(T value)
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{
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if(vValues.size() == nSize)
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{
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vValues.erase(vValues.begin());
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}
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vValues.push_back(value);
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vSorted.resize(vValues.size());
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std::copy(vValues.begin(), vValues.end(), vSorted.begin());
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std::sort(vSorted.begin(), vSorted.end());
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}
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T median() const
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{
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int size = vSorted.size();
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assert(size>0);
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if(size & 1) // Odd number of elements
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{
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return vSorted[size/2];
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}
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else // Even number of elements
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{
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return (vSorted[size/2-1] + vSorted[size/2]) / 2;
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}
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}
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int size() const
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{
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return vValues.size();
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}
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std::vector<T> sorted () const
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{
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return vSorted;
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}
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};
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#ifdef WIN32
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inline void SetThreadPriority(int nPriority)
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{
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SetThreadPriority(GetCurrentThread(), nPriority);
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}
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#else
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#define THREAD_PRIORITY_LOWEST PRIO_MAX
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#define THREAD_PRIORITY_BELOW_NORMAL 2
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#define THREAD_PRIORITY_NORMAL 0
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#define THREAD_PRIORITY_ABOVE_NORMAL (-2)
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inline void SetThreadPriority(int nPriority)
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{
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// It's unclear if it's even possible to change thread priorities on Linux,
|
|
// but we really and truly need it for the generation threads.
|
|
#ifdef PRIO_THREAD
|
|
setpriority(PRIO_THREAD, 0, nPriority);
|
|
#else
|
|
setpriority(PRIO_PROCESS, 0, nPriority);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
void RenameThread(const char* name);
|
|
|
|
inline uint32_t ByteReverse(uint32_t value)
|
|
{
|
|
value = ((value & 0xFF00FF00) >> 8) | ((value & 0x00FF00FF) << 8);
|
|
return (value<<16) | (value>>16);
|
|
}
|
|
|
|
// Standard wrapper for do-something-forever thread functions.
|
|
// "Forever" really means until the thread is interrupted.
|
|
// Use it like:
|
|
// new boost::thread(boost::bind(&LoopForever<void (*)()>, "dumpaddr", &DumpAddresses, 10000));
|
|
// or maybe:
|
|
// boost::function<void()> f = boost::bind(&FunctionWithArg, argument);
|
|
// threadGroup.create_thread(boost::bind(&LoopForever<boost::function<void()> >, "nothing", f, milliseconds));
|
|
template <typename Callable> void LoopForever(const char* name, Callable func, int64 msecs)
|
|
{
|
|
std::string s = strprintf("bitcoin-%s", name);
|
|
RenameThread(s.c_str());
|
|
printf("%s thread start\n", name);
|
|
try
|
|
{
|
|
while (1)
|
|
{
|
|
func();
|
|
MilliSleep(msecs);
|
|
}
|
|
}
|
|
catch (boost::thread_interrupted)
|
|
{
|
|
printf("%s thread stop\n", name);
|
|
throw;
|
|
}
|
|
catch (std::exception& e) {
|
|
PrintException(&e, name);
|
|
}
|
|
catch (...) {
|
|
PrintException(NULL, name);
|
|
}
|
|
}
|
|
// .. and a wrapper that just calls func once
|
|
template <typename Callable> void TraceThread(const char* name, Callable func)
|
|
{
|
|
std::string s = strprintf("bitcoin-%s", name);
|
|
RenameThread(s.c_str());
|
|
try
|
|
{
|
|
printf("%s thread start\n", name);
|
|
func();
|
|
printf("%s thread exit\n", name);
|
|
}
|
|
catch (boost::thread_interrupted)
|
|
{
|
|
printf("%s thread interrupt\n", name);
|
|
throw;
|
|
}
|
|
catch (std::exception& e) {
|
|
PrintException(&e, name);
|
|
}
|
|
catch (...) {
|
|
PrintException(NULL, name);
|
|
}
|
|
}
|
|
|
|
#endif
|