https://svn.boost.org/trac10/ticket/10665 <p> The uuids::name_generator holds an internal state (detail::sha1 sha), which is resetted on every operator() call, hence the operator() cannot be const. </p> <p> So the generators aren't reentrant and cannot be shared between threads. :-( </p> <p> Solution: </p> <p> Make the state a local variable in the operator(). So the operator() can be const (as documentation promises) and the class becomes reentrant. </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/10665 Trac 1.4.3 James E. King, III Sun, 13 Aug 2017 00:39:24 GMT https://svn.boost.org/trac10/ticket/10665#comment:1 https://svn.boost.org/trac10/ticket/10665#comment:1 <ul> <li><strong>owner</strong> changed from <span class="trac-author">Andy Tompkins</span> to <span class="trac-author">James E. King, III</span> </li> </ul> Ticket James E. King, III Sun, 13 Aug 2017 00:45:38 GMT https://svn.boost.org/trac10/ticket/10665#comment:3 https://svn.boost.org/trac10/ticket/10665#comment:3 <ul> <li><strong>status</strong> <span class="trac-field-old">new</span> → <span class="trac-field-new">closed</span> </li> <li><strong>resolution</strong> → <span class="trac-field-new">fixed</span> </li> <li><strong>milestone</strong> <span class="trac-field-old">To Be Determined</span> → <span class="trac-field-new">Boost 1.66.0</span> </li> </ul> Ticket