GDCM  2.4.5
uid_unique.cxx
/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.html for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include <iostream>
#include <string>
#include <set>
int main()
{
//const char myroot[] = "9876543210.9876543210.9876543210.9876543210.9876543210"; // fails in ~40000 tries
const char myroot[] = "9876543210.9876543210.9876543210";
uid.SetRoot( myroot );
std::set<std::string> uids;
uint64_t wrap = 0;
uint64_t c = 0;
while(1)
{
const char *unique = uid.Generate();
//std::cout << unique << std::endl;
if( c % 10000 == 0 )
{
std::cout << "wrap=" << wrap << ",c=" << c << std::endl;
}
++c;
if( c == 0 )
{
wrap++;
}
if ( uids.count(unique) == 1 )
{
std::cerr << "Failed with: " << unique << std::endl;
return 1;
}
uids.insert( unique );
}
}

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