1047 lines
27 KiB
C++
1047 lines
27 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2011 The Bitcoin developers
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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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#include "headers.h"
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#include "strlcpy.h"
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#include <boost/program_options/detail/config_file.hpp>
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#include <boost/program_options/parsers.hpp>
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#include <boost/filesystem.hpp>
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#include <boost/filesystem/fstream.hpp>
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#include <boost/interprocess/sync/interprocess_mutex.hpp>
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#include <boost/interprocess/sync/interprocess_recursive_mutex.hpp>
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#include <boost/foreach.hpp>
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using namespace std;
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using namespace boost;
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map<string, string> mapArgs;
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map<string, vector<string> > mapMultiArgs;
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bool fDebug = false;
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bool fPrintToConsole = false;
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bool fPrintToDebugger = false;
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char pszSetDataDir[MAX_PATH] = "";
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bool fRequestShutdown = false;
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bool fShutdown = false;
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bool fDaemon = false;
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bool fServer = false;
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bool fCommandLine = false;
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string strMiscWarning;
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bool fTestNet = false;
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bool fNoListen = false;
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bool fLogTimestamps = false;
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// Workaround for "multiple definition of `_tls_used'"
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// http://svn.boost.org/trac/boost/ticket/4258
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extern "C" void tss_cleanup_implemented() { }
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// Init openssl library multithreading support
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static boost::interprocess::interprocess_mutex** ppmutexOpenSSL;
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void locking_callback(int mode, int i, const char* file, int line)
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{
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if (mode & CRYPTO_LOCK)
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ppmutexOpenSSL[i]->lock();
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else
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ppmutexOpenSSL[i]->unlock();
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}
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// Init
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class CInit
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{
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public:
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CInit()
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{
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// Init openssl library multithreading support
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ppmutexOpenSSL = (boost::interprocess::interprocess_mutex**)OPENSSL_malloc(CRYPTO_num_locks() * sizeof(boost::interprocess::interprocess_mutex*));
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for (int i = 0; i < CRYPTO_num_locks(); i++)
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ppmutexOpenSSL[i] = new boost::interprocess::interprocess_mutex();
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CRYPTO_set_locking_callback(locking_callback);
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#ifdef __WXMSW__
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// Seed random number generator with screen scrape and other hardware sources
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RAND_screen();
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#endif
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// Seed random number generator with performance counter
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RandAddSeed();
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}
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~CInit()
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{
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// Shutdown openssl library multithreading support
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CRYPTO_set_locking_callback(NULL);
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for (int i = 0; i < CRYPTO_num_locks(); i++)
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delete ppmutexOpenSSL[i];
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OPENSSL_free(ppmutexOpenSSL);
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}
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}
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instance_of_cinit;
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void RandAddSeed()
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{
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// Seed with CPU performance counter
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int64 nCounter = GetPerformanceCounter();
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RAND_add(&nCounter, sizeof(nCounter), 1.5);
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memset(&nCounter, 0, sizeof(nCounter));
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}
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void RandAddSeedPerfmon()
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{
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RandAddSeed();
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// This can take up to 2 seconds, so only do it every 10 minutes
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static int64 nLastPerfmon;
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if (GetTime() < nLastPerfmon + 10 * 60)
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return;
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nLastPerfmon = GetTime();
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#ifdef __WXMSW__
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// Don't need this on Linux, OpenSSL automatically uses /dev/urandom
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// Seed with the entire set of perfmon data
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unsigned char pdata[250000];
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memset(pdata, 0, sizeof(pdata));
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unsigned long nSize = sizeof(pdata);
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long ret = RegQueryValueExA(HKEY_PERFORMANCE_DATA, "Global", NULL, NULL, pdata, &nSize);
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RegCloseKey(HKEY_PERFORMANCE_DATA);
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if (ret == ERROR_SUCCESS)
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{
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RAND_add(pdata, nSize, nSize/100.0);
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memset(pdata, 0, nSize);
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printf("%s RandAddSeed() %d bytes\n", DateTimeStrFormat("%x %H:%M", GetTime()).c_str(), nSize);
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}
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#endif
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}
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uint64 GetRand(uint64 nMax)
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{
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if (nMax == 0)
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return 0;
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// The range of the random source must be a multiple of the modulus
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// to give every possible output value an equal possibility
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uint64 nRange = (UINT64_MAX / nMax) * nMax;
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uint64 nRand = 0;
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do
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RAND_bytes((unsigned char*)&nRand, sizeof(nRand));
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while (nRand >= nRange);
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return (nRand % nMax);
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}
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int GetRandInt(int nMax)
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{
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return GetRand(nMax);
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}
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inline int OutputDebugStringF(const char* pszFormat, ...)
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{
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int ret = 0;
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if (fPrintToConsole)
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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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ret = vprintf(pszFormat, arg_ptr);
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va_end(arg_ptr);
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}
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else
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{
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// print to debug.log
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static FILE* fileout = NULL;
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if (!fileout)
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{
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char pszFile[MAX_PATH+100];
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GetDataDir(pszFile);
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strlcat(pszFile, "/debug.log", sizeof(pszFile));
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fileout = fopen(pszFile, "a");
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if (fileout) setbuf(fileout, NULL); // unbuffered
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}
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if (fileout)
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{
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static bool fStartedNewLine = true;
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// Debug print useful for profiling
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if (fLogTimestamps && fStartedNewLine)
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fprintf(fileout, "%s ", DateTimeStrFormat("%x %H:%M:%S", GetTime()).c_str());
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if (pszFormat[strlen(pszFormat) - 1] == '\n')
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fStartedNewLine = true;
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else
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fStartedNewLine = false;
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va_list arg_ptr;
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va_start(arg_ptr, pszFormat);
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ret = vfprintf(fileout, pszFormat, arg_ptr);
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va_end(arg_ptr);
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}
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}
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#ifdef __WXMSW__
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if (fPrintToDebugger)
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{
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static CCriticalSection cs_OutputDebugStringF;
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// accumulate a line at a time
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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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OutputDebugStringA(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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}
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}
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#endif
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return ret;
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}
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// Safer snprintf
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// - prints up to limit-1 characters
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// - output string is always null terminated even if limit reached
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// - return value is the number of characters actually printed
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int my_snprintf(char* buffer, size_t limit, const char* format, ...)
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{
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if (limit == 0)
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return 0;
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va_list arg_ptr;
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va_start(arg_ptr, format);
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int ret = _vsnprintf(buffer, limit, format, 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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ret = limit - 1;
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buffer[limit-1] = 0;
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}
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return ret;
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}
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string strprintf(const std::string &format, ...)
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{
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char buffer[50000];
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char* p = buffer;
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int limit = sizeof(buffer);
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int ret;
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loop
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{
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va_list arg_ptr;
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va_start(arg_ptr, format);
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ret = _vsnprintf(p, limit, format.c_str(), arg_ptr);
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va_end(arg_ptr);
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if (ret >= 0 && ret < limit)
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break;
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if (p != buffer)
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delete[] p;
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limit *= 2;
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p = new char[limit];
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if (p == NULL)
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throw std::bad_alloc();
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}
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string str(p, p+ret);
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if (p != buffer)
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delete[] p;
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return str;
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}
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bool error(const std::string &format, ...)
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{
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char buffer[50000];
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int limit = sizeof(buffer);
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va_list arg_ptr;
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va_start(arg_ptr, format);
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int ret = _vsnprintf(buffer, limit, format.c_str(), 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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ret = limit - 1;
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buffer[limit-1] = 0;
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}
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printf("ERROR: %s\n", buffer);
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return false;
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}
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void ParseString(const string& str, char c, vector<string>& v)
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{
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if (str.empty())
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return;
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string::size_type i1 = 0;
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string::size_type i2;
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loop
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{
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i2 = str.find(c, i1);
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if (i2 == str.npos)
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{
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v.push_back(str.substr(i1));
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return;
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}
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v.push_back(str.substr(i1, i2-i1));
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i1 = i2+1;
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}
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}
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string FormatMoney(int64 n, bool fPlus)
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{
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// Note: not using straight sprintf here because we do NOT want
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// localized number formatting.
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int64 n_abs = (n > 0 ? n : -n);
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int64 quotient = n_abs/COIN;
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int64 remainder = n_abs%COIN;
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string str = strprintf("%"PRI64d".%08"PRI64d, quotient, remainder);
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// Right-trim excess 0's before the decimal point:
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int nTrim = 0;
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for (int i = str.size()-1; (str[i] == '0' && isdigit(str[i-2])); --i)
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++nTrim;
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if (nTrim)
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str.erase(str.size()-nTrim, nTrim);
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if (n < 0)
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str.insert((unsigned int)0, 1, '-');
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else if (fPlus && n > 0)
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str.insert((unsigned int)0, 1, '+');
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return str;
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}
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bool ParseMoney(const string& str, int64& nRet)
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{
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return ParseMoney(str.c_str(), nRet);
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}
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bool ParseMoney(const char* pszIn, int64& nRet)
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{
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string strWhole;
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int64 nUnits = 0;
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const char* p = pszIn;
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while (isspace(*p))
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p++;
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for (; *p; p++)
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{
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if (*p == '.')
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{
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p++;
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int64 nMult = CENT*10;
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while (isdigit(*p) && (nMult > 0))
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{
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nUnits += nMult * (*p++ - '0');
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nMult /= 10;
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}
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break;
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}
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if (isspace(*p))
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break;
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if (!isdigit(*p))
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return false;
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strWhole.insert(strWhole.end(), *p);
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}
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for (; *p; p++)
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if (!isspace(*p))
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return false;
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if (strWhole.size() > 14)
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return false;
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if (nUnits < 0 || nUnits > COIN)
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return false;
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int64 nWhole = atoi64(strWhole);
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int64 nValue = nWhole*COIN + nUnits;
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nRet = nValue;
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return true;
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}
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vector<unsigned char> ParseHex(const char* psz)
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{
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static char phexdigit[256] =
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{ -1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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0,1,2,3,4,5,6,7,8,9,-1,-1,-1,-1,-1,-1,
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-1,0xa,0xb,0xc,0xd,0xe,0xf,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,0xa,0xb,0xc,0xd,0xe,0xf,-1,-1,-1,-1,-1,-1,-1,-1,-1
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,
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-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1,-1, };
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// convert hex dump to vector
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vector<unsigned char> vch;
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loop
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{
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while (isspace(*psz))
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psz++;
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char c = phexdigit[(unsigned char)*psz++];
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if (c == (char)-1)
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break;
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unsigned char n = (c << 4);
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c = phexdigit[(unsigned char)*psz++];
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if (c == (char)-1)
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break;
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n |= c;
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vch.push_back(n);
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}
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return vch;
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}
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vector<unsigned char> ParseHex(const string& str)
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{
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return ParseHex(str.c_str());
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}
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void ParseParameters(int argc, char* argv[])
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{
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mapArgs.clear();
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mapMultiArgs.clear();
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for (int i = 1; i < argc; i++)
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{
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char psz[10000];
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strlcpy(psz, argv[i], sizeof(psz));
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char* pszValue = (char*)"";
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if (strchr(psz, '='))
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{
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pszValue = strchr(psz, '=');
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*pszValue++ = '\0';
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}
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#ifdef __WXMSW__
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_strlwr(psz);
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if (psz[0] == '/')
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psz[0] = '-';
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#endif
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if (psz[0] != '-')
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break;
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mapArgs[psz] = pszValue;
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mapMultiArgs[psz].push_back(pszValue);
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}
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}
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const char* wxGetTranslation(const char* pszEnglish)
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{
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#ifdef GUI
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// Wrapper of wxGetTranslation returning the same const char* type as was passed in
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static CCriticalSection cs;
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CRITICAL_BLOCK(cs)
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{
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// Look in cache
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static map<string, char*> mapCache;
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map<string, char*>::iterator mi = mapCache.find(pszEnglish);
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if (mi != mapCache.end())
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return (*mi).second;
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// wxWidgets translation
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wxString strTranslated = wxGetTranslation(wxString(pszEnglish, wxConvUTF8));
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// We don't cache unknown strings because caller might be passing in a
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// dynamic string and we would keep allocating memory for each variation.
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if (strcmp(pszEnglish, strTranslated.utf8_str()) == 0)
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return pszEnglish;
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// Add to cache, memory doesn't need to be freed. We only cache because
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// we must pass back a pointer to permanently allocated memory.
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char* pszCached = new char[strlen(strTranslated.utf8_str())+1];
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strcpy(pszCached, strTranslated.utf8_str());
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mapCache[pszEnglish] = pszCached;
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return pszCached;
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}
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return NULL;
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#else
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return pszEnglish;
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#endif
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}
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bool WildcardMatch(const char* psz, const char* mask)
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{
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loop
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{
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switch (*mask)
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{
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case '\0':
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return (*psz == '\0');
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case '*':
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return WildcardMatch(psz, mask+1) || (*psz && WildcardMatch(psz+1, mask));
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case '?':
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if (*psz == '\0')
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return false;
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break;
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default:
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if (*psz != *mask)
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return false;
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break;
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}
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psz++;
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mask++;
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}
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}
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bool WildcardMatch(const string& str, const string& mask)
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{
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return WildcardMatch(str.c_str(), mask.c_str());
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}
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|
|
|
|
|
|
|
|
|
|
void FormatException(char* pszMessage, std::exception* pex, const char* pszThread)
|
|
{
|
|
#ifdef __WXMSW__
|
|
char pszModule[MAX_PATH];
|
|
pszModule[0] = '\0';
|
|
GetModuleFileNameA(NULL, pszModule, sizeof(pszModule));
|
|
#else
|
|
const char* pszModule = "bitcoin";
|
|
#endif
|
|
if (pex)
|
|
snprintf(pszMessage, 1000,
|
|
"EXCEPTION: %s \n%s \n%s in %s \n", typeid(*pex).name(), pex->what(), pszModule, pszThread);
|
|
else
|
|
snprintf(pszMessage, 1000,
|
|
"UNKNOWN EXCEPTION \n%s in %s \n", pszModule, pszThread);
|
|
}
|
|
|
|
void LogException(std::exception* pex, const char* pszThread)
|
|
{
|
|
char pszMessage[10000];
|
|
FormatException(pszMessage, pex, pszThread);
|
|
printf("\n%s", pszMessage);
|
|
}
|
|
|
|
void PrintException(std::exception* pex, const char* pszThread)
|
|
{
|
|
char pszMessage[10000];
|
|
FormatException(pszMessage, pex, pszThread);
|
|
printf("\n\n************************\n%s\n", pszMessage);
|
|
fprintf(stderr, "\n\n************************\n%s\n", pszMessage);
|
|
strMiscWarning = pszMessage;
|
|
#ifdef GUI
|
|
if (wxTheApp && !fDaemon)
|
|
MyMessageBox(pszMessage, "Bitcoin", wxOK | wxICON_ERROR);
|
|
#endif
|
|
throw;
|
|
}
|
|
|
|
void ThreadOneMessageBox(string strMessage)
|
|
{
|
|
// Skip message boxes if one is already open
|
|
static bool fMessageBoxOpen;
|
|
if (fMessageBoxOpen)
|
|
return;
|
|
fMessageBoxOpen = true;
|
|
ThreadSafeMessageBox(strMessage, "Bitcoin", wxOK | wxICON_EXCLAMATION);
|
|
fMessageBoxOpen = false;
|
|
}
|
|
|
|
void PrintExceptionContinue(std::exception* pex, const char* pszThread)
|
|
{
|
|
char pszMessage[10000];
|
|
FormatException(pszMessage, pex, pszThread);
|
|
printf("\n\n************************\n%s\n", pszMessage);
|
|
fprintf(stderr, "\n\n************************\n%s\n", pszMessage);
|
|
strMiscWarning = pszMessage;
|
|
#ifdef GUI
|
|
if (wxTheApp && !fDaemon)
|
|
boost::thread(boost::bind(ThreadOneMessageBox, string(pszMessage)));
|
|
#endif
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef __WXMSW__
|
|
typedef WINSHELLAPI BOOL (WINAPI *PSHGETSPECIALFOLDERPATHA)(HWND hwndOwner, LPSTR lpszPath, int nFolder, BOOL fCreate);
|
|
|
|
string MyGetSpecialFolderPath(int nFolder, bool fCreate)
|
|
{
|
|
char pszPath[MAX_PATH+100] = "";
|
|
|
|
// SHGetSpecialFolderPath isn't always available on old Windows versions
|
|
HMODULE hShell32 = LoadLibraryA("shell32.dll");
|
|
if (hShell32)
|
|
{
|
|
PSHGETSPECIALFOLDERPATHA pSHGetSpecialFolderPath =
|
|
(PSHGETSPECIALFOLDERPATHA)GetProcAddress(hShell32, "SHGetSpecialFolderPathA");
|
|
if (pSHGetSpecialFolderPath)
|
|
(*pSHGetSpecialFolderPath)(NULL, pszPath, nFolder, fCreate);
|
|
FreeModule(hShell32);
|
|
}
|
|
|
|
// Backup option
|
|
if (pszPath[0] == '\0')
|
|
{
|
|
if (nFolder == CSIDL_STARTUP)
|
|
{
|
|
strcpy(pszPath, getenv("USERPROFILE"));
|
|
strcat(pszPath, "\\Start Menu\\Programs\\Startup");
|
|
}
|
|
else if (nFolder == CSIDL_APPDATA)
|
|
{
|
|
strcpy(pszPath, getenv("APPDATA"));
|
|
}
|
|
}
|
|
|
|
return pszPath;
|
|
}
|
|
#endif
|
|
|
|
string GetDefaultDataDir()
|
|
{
|
|
// Windows: C:\Documents and Settings\username\Application Data\Bitcoin
|
|
// Mac: ~/Library/Application Support/Bitcoin
|
|
// Unix: ~/.bitcoin
|
|
#ifdef __WXMSW__
|
|
// Windows
|
|
return MyGetSpecialFolderPath(CSIDL_APPDATA, true) + "\\Bitcoin";
|
|
#else
|
|
char* pszHome = getenv("HOME");
|
|
if (pszHome == NULL || strlen(pszHome) == 0)
|
|
pszHome = (char*)"/";
|
|
string strHome = pszHome;
|
|
if (strHome[strHome.size()-1] != '/')
|
|
strHome += '/';
|
|
#ifdef __WXMAC_OSX__
|
|
// Mac
|
|
strHome += "Library/Application Support/";
|
|
filesystem::create_directory(strHome.c_str());
|
|
return strHome + "Bitcoin";
|
|
#else
|
|
// Unix
|
|
return strHome + ".bitcoin";
|
|
#endif
|
|
#endif
|
|
}
|
|
|
|
void GetDataDir(char* pszDir)
|
|
{
|
|
// pszDir must be at least MAX_PATH length.
|
|
int nVariation;
|
|
if (pszSetDataDir[0] != 0)
|
|
{
|
|
strlcpy(pszDir, pszSetDataDir, MAX_PATH);
|
|
nVariation = 0;
|
|
}
|
|
else
|
|
{
|
|
// This can be called during exceptions by printf, so we cache the
|
|
// value so we don't have to do memory allocations after that.
|
|
static char pszCachedDir[MAX_PATH];
|
|
if (pszCachedDir[0] == 0)
|
|
strlcpy(pszCachedDir, GetDefaultDataDir().c_str(), sizeof(pszCachedDir));
|
|
strlcpy(pszDir, pszCachedDir, MAX_PATH);
|
|
nVariation = 1;
|
|
}
|
|
if (fTestNet)
|
|
{
|
|
char* p = pszDir + strlen(pszDir);
|
|
if (p > pszDir && p[-1] != '/' && p[-1] != '\\')
|
|
*p++ = '/';
|
|
strcpy(p, "testnet");
|
|
nVariation += 2;
|
|
}
|
|
static bool pfMkdir[4];
|
|
if (!pfMkdir[nVariation])
|
|
{
|
|
pfMkdir[nVariation] = true;
|
|
boost::filesystem::create_directory(pszDir);
|
|
}
|
|
}
|
|
|
|
string GetDataDir()
|
|
{
|
|
char pszDir[MAX_PATH];
|
|
GetDataDir(pszDir);
|
|
return pszDir;
|
|
}
|
|
|
|
string GetConfigFile()
|
|
{
|
|
namespace fs = boost::filesystem;
|
|
fs::path pathConfig(GetArg("-conf", "bitcoin.conf"));
|
|
if (!pathConfig.is_complete())
|
|
pathConfig = fs::path(GetDataDir()) / pathConfig;
|
|
return pathConfig.string();
|
|
}
|
|
|
|
void ReadConfigFile(map<string, string>& mapSettingsRet,
|
|
map<string, vector<string> >& mapMultiSettingsRet)
|
|
{
|
|
namespace fs = boost::filesystem;
|
|
namespace pod = boost::program_options::detail;
|
|
|
|
fs::ifstream streamConfig(GetConfigFile());
|
|
if (!streamConfig.good())
|
|
return;
|
|
|
|
set<string> setOptions;
|
|
setOptions.insert("*");
|
|
|
|
for (pod::config_file_iterator it(streamConfig, setOptions), end; it != end; ++it)
|
|
{
|
|
// Don't overwrite existing settings so command line settings override bitcoin.conf
|
|
string strKey = string("-") + it->string_key;
|
|
if (mapSettingsRet.count(strKey) == 0)
|
|
mapSettingsRet[strKey] = it->value[0];
|
|
mapMultiSettingsRet[strKey].push_back(it->value[0]);
|
|
}
|
|
}
|
|
|
|
string GetPidFile()
|
|
{
|
|
namespace fs = boost::filesystem;
|
|
fs::path pathConfig(GetArg("-pid", "bitcoind.pid"));
|
|
if (!pathConfig.is_complete())
|
|
pathConfig = fs::path(GetDataDir()) / pathConfig;
|
|
return pathConfig.string();
|
|
}
|
|
|
|
void CreatePidFile(string pidFile, pid_t pid)
|
|
{
|
|
FILE* file = fopen(pidFile.c_str(), "w");
|
|
if (file)
|
|
{
|
|
fprintf(file, "%d\n", pid);
|
|
fclose(file);
|
|
}
|
|
}
|
|
|
|
int GetFilesize(FILE* file)
|
|
{
|
|
int nSavePos = ftell(file);
|
|
int nFilesize = -1;
|
|
if (fseek(file, 0, SEEK_END) == 0)
|
|
nFilesize = ftell(file);
|
|
fseek(file, nSavePos, SEEK_SET);
|
|
return nFilesize;
|
|
}
|
|
|
|
void ShrinkDebugFile()
|
|
{
|
|
// Scroll debug.log if it's getting too big
|
|
string strFile = GetDataDir() + "/debug.log";
|
|
FILE* file = fopen(strFile.c_str(), "r");
|
|
if (file && GetFilesize(file) > 10 * 1000000)
|
|
{
|
|
// Restart the file with some of the end
|
|
char pch[200000];
|
|
fseek(file, -sizeof(pch), SEEK_END);
|
|
int nBytes = fread(pch, 1, sizeof(pch), file);
|
|
fclose(file);
|
|
|
|
file = fopen(strFile.c_str(), "w");
|
|
if (file)
|
|
{
|
|
fwrite(pch, 1, nBytes, file);
|
|
fclose(file);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
//
|
|
// "Never go to sea with two chronometers; take one or three."
|
|
// Our three time sources are:
|
|
// - System clock
|
|
// - Median of other nodes's clocks
|
|
// - The user (asking the user to fix the system clock if the first two disagree)
|
|
//
|
|
int64 GetTime()
|
|
{
|
|
return time(NULL);
|
|
}
|
|
|
|
static int64 nTimeOffset = 0;
|
|
|
|
int64 GetAdjustedTime()
|
|
{
|
|
return GetTime() + nTimeOffset;
|
|
}
|
|
|
|
void AddTimeData(unsigned int ip, int64 nTime)
|
|
{
|
|
int64 nOffsetSample = nTime - GetTime();
|
|
|
|
// Ignore duplicates
|
|
static set<unsigned int> setKnown;
|
|
if (!setKnown.insert(ip).second)
|
|
return;
|
|
|
|
// Add data
|
|
static vector<int64> vTimeOffsets;
|
|
if (vTimeOffsets.empty())
|
|
vTimeOffsets.push_back(0);
|
|
vTimeOffsets.push_back(nOffsetSample);
|
|
printf("Added time data, samples %d, offset %+"PRI64d" (%+"PRI64d" minutes)\n", vTimeOffsets.size(), vTimeOffsets.back(), vTimeOffsets.back()/60);
|
|
if (vTimeOffsets.size() >= 5 && vTimeOffsets.size() % 2 == 1)
|
|
{
|
|
sort(vTimeOffsets.begin(), vTimeOffsets.end());
|
|
int64 nMedian = vTimeOffsets[vTimeOffsets.size()/2];
|
|
// Only let other nodes change our time by so much
|
|
if (abs64(nMedian) < 70 * 60)
|
|
{
|
|
nTimeOffset = nMedian;
|
|
}
|
|
else
|
|
{
|
|
nTimeOffset = 0;
|
|
|
|
static bool fDone;
|
|
if (!fDone)
|
|
{
|
|
// If nobody has a time different than ours but within 5 minutes of ours, give a warning
|
|
bool fMatch = false;
|
|
BOOST_FOREACH(int64 nOffset, vTimeOffsets)
|
|
if (nOffset != 0 && abs64(nOffset) < 5 * 60)
|
|
fMatch = true;
|
|
|
|
if (!fMatch)
|
|
{
|
|
fDone = true;
|
|
string strMessage = _("Warning: Please check that your computer's date and time are correct. If your clock is wrong Bitcoin will not work properly.");
|
|
strMiscWarning = strMessage;
|
|
printf("*** %s\n", strMessage.c_str());
|
|
boost::thread(boost::bind(ThreadSafeMessageBox, strMessage+" ", string("Bitcoin"), wxOK | wxICON_EXCLAMATION, (wxWindow*)NULL, -1, -1));
|
|
}
|
|
}
|
|
}
|
|
BOOST_FOREACH(int64 n, vTimeOffsets)
|
|
printf("%+"PRI64d" ", n);
|
|
printf("| nTimeOffset = %+"PRI64d" (%+"PRI64d" minutes)\n", nTimeOffset, nTimeOffset/60);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
string FormatVersion(int nVersion)
|
|
{
|
|
if (nVersion%100 == 0)
|
|
return strprintf("%d.%d.%d", nVersion/1000000, (nVersion/10000)%100, (nVersion/100)%100);
|
|
else
|
|
return strprintf("%d.%d.%d.%d", nVersion/1000000, (nVersion/10000)%100, (nVersion/100)%100, nVersion%100);
|
|
}
|
|
|
|
string FormatFullVersion()
|
|
{
|
|
string s = FormatVersion(VERSION) + pszSubVer;
|
|
if (VERSION_IS_BETA) {
|
|
s += "-";
|
|
s += _("beta");
|
|
}
|
|
return s;
|
|
}
|
|
|
|
|
|
|
|
|
|
#ifdef DEBUG_LOCKORDER
|
|
//
|
|
// Early deadlock detection.
|
|
// Problem being solved:
|
|
// Thread 1 locks A, then B, then C
|
|
// Thread 2 locks D, then C, then A
|
|
// --> may result in deadlock between the two threads, depending on when they run.
|
|
// Solution implemented here:
|
|
// Keep track of pairs of locks: (A before B), (A before C), etc.
|
|
// Complain if any thread trys to lock in a different order.
|
|
//
|
|
|
|
struct CLockLocation
|
|
{
|
|
CLockLocation(const char* pszName, const char* pszFile, int nLine)
|
|
{
|
|
mutexName = pszName;
|
|
sourceFile = pszFile;
|
|
sourceLine = nLine;
|
|
}
|
|
|
|
std::string ToString() const
|
|
{
|
|
return mutexName+" "+sourceFile+":"+itostr(sourceLine);
|
|
}
|
|
|
|
private:
|
|
std::string mutexName;
|
|
std::string sourceFile;
|
|
int sourceLine;
|
|
};
|
|
|
|
typedef std::vector< std::pair<CCriticalSection*, CLockLocation> > LockStack;
|
|
|
|
static boost::interprocess::interprocess_mutex dd_mutex;
|
|
static std::map<std::pair<CCriticalSection*, CCriticalSection*>, LockStack> lockorders;
|
|
static boost::thread_specific_ptr<LockStack> lockstack;
|
|
|
|
|
|
static void potential_deadlock_detected(const std::pair<CCriticalSection*, CCriticalSection*>& mismatch, const LockStack& s1, const LockStack& s2)
|
|
{
|
|
printf("POTENTIAL DEADLOCK DETECTED\n");
|
|
printf("Previous lock order was:\n");
|
|
BOOST_FOREACH(const PAIRTYPE(CCriticalSection*, CLockLocation)& i, s2)
|
|
{
|
|
if (i.first == mismatch.first) printf(" (1)");
|
|
if (i.first == mismatch.second) printf(" (2)");
|
|
printf(" %s\n", i.second.ToString().c_str());
|
|
}
|
|
printf("Current lock order is:\n");
|
|
BOOST_FOREACH(const PAIRTYPE(CCriticalSection*, CLockLocation)& i, s1)
|
|
{
|
|
if (i.first == mismatch.first) printf(" (1)");
|
|
if (i.first == mismatch.second) printf(" (2)");
|
|
printf(" %s\n", i.second.ToString().c_str());
|
|
}
|
|
}
|
|
|
|
static void push_lock(CCriticalSection* c, const CLockLocation& locklocation)
|
|
{
|
|
bool fOrderOK = true;
|
|
if (lockstack.get() == NULL)
|
|
lockstack.reset(new LockStack);
|
|
|
|
if (fDebug) printf("Locking: %s\n", locklocation.ToString().c_str());
|
|
dd_mutex.lock();
|
|
|
|
(*lockstack).push_back(std::make_pair(c, locklocation));
|
|
|
|
BOOST_FOREACH(const PAIRTYPE(CCriticalSection*, CLockLocation)& i, (*lockstack))
|
|
{
|
|
if (i.first == c) break;
|
|
|
|
std::pair<CCriticalSection*, CCriticalSection*> p1 = std::make_pair(i.first, c);
|
|
if (lockorders.count(p1))
|
|
continue;
|
|
lockorders[p1] = (*lockstack);
|
|
|
|
std::pair<CCriticalSection*, CCriticalSection*> p2 = std::make_pair(c, i.first);
|
|
if (lockorders.count(p2))
|
|
{
|
|
potential_deadlock_detected(p1, lockorders[p2], lockorders[p1]);
|
|
break;
|
|
}
|
|
}
|
|
dd_mutex.unlock();
|
|
}
|
|
|
|
static void pop_lock()
|
|
{
|
|
if (fDebug)
|
|
{
|
|
const CLockLocation& locklocation = (*lockstack).rbegin()->second;
|
|
printf("Unlocked: %s\n", locklocation.ToString().c_str());
|
|
}
|
|
dd_mutex.lock();
|
|
(*lockstack).pop_back();
|
|
dd_mutex.unlock();
|
|
}
|
|
|
|
void CCriticalSection::Enter(const char* pszName, const char* pszFile, int nLine)
|
|
{
|
|
push_lock(this, CLockLocation(pszName, pszFile, nLine));
|
|
mutex.lock();
|
|
}
|
|
void CCriticalSection::Leave()
|
|
{
|
|
mutex.unlock();
|
|
pop_lock();
|
|
}
|
|
bool CCriticalSection::TryEnter(const char* pszName, const char* pszFile, int nLine)
|
|
{
|
|
push_lock(this, CLockLocation(pszName, pszFile, nLine));
|
|
bool result = mutex.try_lock();
|
|
if (!result) pop_lock();
|
|
return result;
|
|
}
|
|
|
|
#else
|
|
|
|
void CCriticalSection::Enter(const char*, const char*, int)
|
|
{
|
|
mutex.lock();
|
|
}
|
|
|
|
void CCriticalSection::Leave()
|
|
{
|
|
mutex.unlock();
|
|
}
|
|
|
|
bool CCriticalSection::TryEnter(const char*, const char*, int)
|
|
{
|
|
bool result = mutex.try_lock();
|
|
return result;
|
|
}
|
|
|
|
#endif /* DEBUG_LOCKORDER */
|