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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_UTIL_H
#define BITCOIN_UTIL_H
#include "uint256.h"
#include <stdarg.h>
#ifndef WIN32
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#endif
#include <map>
#include <list>
#include <utility>
#include <vector>
#include <string>
#include <boost/thread.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>
#include "netbase.h" // for AddTimeData
typedef long long int64;
typedef unsigned long long uint64;
static const int64 COIN = 100000000;
static const int64 CENT = 1000000;
#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]))
#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"
#endif
#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 PAIRTYPE(t1, t2) std::pair<t1, t2>
// Align by increasing pointer, must have extra space at end of buffer
template <size_t nBytes, typename T>
T* alignup(T* p)
{
union
{
T* ptr;
size_t n;
} u;
u.ptr = p;
u.n = (u.n + (nBytes-1)) & ~(nBytes-1);
return u.ptr;
}
#ifdef WIN32
#define MSG_NOSIGNAL 0
#define MSG_DONTWAIT 0
#ifndef S_IRUSR
#define S_IRUSR 0400
#define S_IWUSR 0200
#endif
#else
#define MAX_PATH 1024
#endif
inline void MilliSleep(int64 n)
{
#if BOOST_VERSION >= 105000
boost::this_thread::sleep_for(boost::chrono::milliseconds(n));
#else
boost::this_thread::sleep(boost::posix_time::milliseconds(n));
#endif
}
/* 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 bool fDaemon;
extern bool fServer;
extern bool fCommandLine;
extern std::string strMiscWarning;
extern bool fTestNet;
extern bool fNoListen;
extern bool fLogTimestamps;
extern volatile bool fReopenDebugLog;
void RandAddSeed();
void RandAddSeedPerfmon();
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::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);
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);
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);
bool TruncateFile(FILE *file, unsigned int length);
int RaiseFileDescriptorLimit(int nMinFD);
void AllocateFileRange(FILE *file, unsigned int offset, unsigned int length);
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();
void CreatePidFile(const boost::filesystem::path &path, pid_t pid);
void ReadConfigFile(std::map<std::string, std::string>& mapSettingsRet, std::map<std::string, std::vector<std::string> >& mapMultiSettingsRet);
#ifdef WIN32
boost::filesystem::path GetSpecialFolderPath(int nFolder, bool fCreate = true);
#endif
boost::filesystem::path GetTempPath();
void ShrinkDebugFile();
int GetRandInt(int nMax);
uint64 GetRand(uint64 nMax);
uint256 GetRandHash();
int64 GetTime();
void SetMockTime(int64 nMockTimeIn);
int64 GetAdjustedTime();
int64 GetTimeOffset();
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 runCommand(std::string strCommand);
inline std::string i64tostr(int64 n)
{
return strprintf("%"PRI64d, n);
}
inline std::string itostr(int n)
{
return strprintf("%d", n);
}
inline int64 atoi64(const char* psz)
{
#ifdef _MSC_VER
return _atoi64(psz);
#else
return strtoll(psz, NULL, 10);
#endif
}
inline int64 atoi64(const std::string& str)
{
#ifdef _MSC_VER
return _atoi64(str.c_str());
#else
return strtoll(str.c_str(), NULL, 10);
#endif
}
inline int atoi(const std::string& str)
{
return atoi(str.c_str());
}
inline int roundint(double d)
{
return (int)(d > 0 ? d + 0.5 : d - 0.5);
}
inline int64 roundint64(double d)
{
return (int64)(d > 0 ? d + 0.5 : d - 0.5);
}
inline int64 abs64(int64 n)
{
return (n >= 0 ? n : -n);
}
template<typename T>
std::string HexStr(const T itbegin, const T itend, bool fSpaces=false)
{
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;
}
template<typename T>
inline std::string HexStr(const T& vch, bool fSpaces=false)
{
return HexStr(vch.begin(), vch.end(), fSpaces);
}
template<typename T>
void PrintHex(const T pbegin, const T pend, const char* pszFormat="%s", bool fSpaces=true)
{
printf(pszFormat, HexStr(pbegin, pend, fSpaces).c_str());
}
inline void PrintHex(const std::vector<unsigned char>& vch, const char* pszFormat="%s", bool fSpaces=true)
{
printf(pszFormat, HexStr(vch, fSpaces).c_str());
}
inline int64 GetPerformanceCounter()
{
int64 nCounter = 0;
#ifdef WIN32
QueryPerformanceCounter((LARGE_INTEGER*)&nCounter);
#else
timeval t;
gettimeofday(&t, NULL);
nCounter = (int64) t.tv_sec * 1000000 + t.tv_usec;
#endif
return nCounter;
}
inline int64 GetTimeMillis()
{
return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_milliseconds();
}
inline int64 GetTimeMicros()
{
return (boost::posix_time::ptime(boost::posix_time::microsec_clock::universal_time()) -
boost::posix_time::ptime(boost::gregorian::date(1970,1,1))).total_microseconds();
}
inline std::string DateTimeStrFormat(const char* pszFormat, int64 nTime)
{
time_t n = nTime;
struct tm* ptmTime = gmtime(&n);
char pszTime[200];
strftime(pszTime, sizeof(pszTime), pszFormat, ptmTime);
return pszTime;
}
template<typename T>
void skipspaces(T& it)
{
while (isspace(*it))
++it;
}
inline bool IsSwitchChar(char c)
{
#ifdef WIN32
return c == '-' || c == '/';
#else
return c == '-';
#endif
}
/**
* 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);
/**
* Return 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 GetArg(const std::string& strArg, int64 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);
/**
* Set an argument if it doesn't already have a value
*
* @param strArg Argument to set (e.g. "-foo")
* @param strValue Value (e.g. "1")
* @return true if argument gets set, false if it already had a value
*/
bool SoftSetArg(const std::string& strArg, const std::string& strValue);
/**
* Set a boolean argument if it doesn't already have a value
*
* @param strArg Argument to set (e.g. "-foo")
* @param fValue Value (e.g. false)
* @return true if argument gets set, false if it already had a value
*/
bool SoftSetBoolArg(const std::string& strArg, bool fValue);
/**
* MWC RNG of George Marsaglia
* This is intended to be fast. It has a period of 2^59.3, though the
* least significant 16 bits only have a period of about 2^30.1.
*
* @return random value
*/
extern uint32_t insecure_rand_Rz;
extern uint32_t insecure_rand_Rw;
static inline uint32_t insecure_rand(void)
{
insecure_rand_Rz = 36969 * (insecure_rand_Rz & 65535) + (insecure_rand_Rz >> 16);
insecure_rand_Rw = 18000 * (insecure_rand_Rw & 65535) + (insecure_rand_Rw >> 16);
return (insecure_rand_Rw << 16) + insecure_rand_Rz;
}
/**
* Seed insecure_rand using the random pool.
* @param Deterministic Use a determinstic seed
*/
void seed_insecure_rand(bool fDeterministic=false);
/** 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;
unsigned int nSize;
public:
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)
{
vValues.erase(vValues.begin());
}
vValues.push_back(value);
vSorted.resize(vValues.size());
std::copy(vValues.begin(), vValues.end(), vSorted.begin());
std::sort(vSorted.begin(), vSorted.end());
}
T median() const
{
int size = vSorted.size();
assert(size>0);
if(size & 1) // Odd number of elements
{
return vSorted[size/2];
}
else // Even number of elements
{
return (vSorted[size/2-1] + vSorted[size/2]) / 2;
}
}
int size() const
{
return vValues.size();
}
std::vector<T> sorted () const
{
return vSorted;
}
};
#ifdef WIN32
inline void SetThreadPriority(int nPriority)
{
SetThreadPriority(GetCurrentThread(), nPriority);
}
#else
#define THREAD_PRIORITY_LOWEST PRIO_MAX
#define THREAD_PRIORITY_BELOW_NORMAL 2
#define THREAD_PRIORITY_NORMAL 0
#define THREAD_PRIORITY_ABOVE_NORMAL (-2)
inline void SetThreadPriority(int nPriority)
{
// 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