id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
5843,thread.cpp: thread::join() does not throw for a non-joinable thread,noloader@…,viboes,"Boost uses non-joinable threads. For example, under Windows:

{{{
thread::thread() : m_joinable(false)
{
    m_thread = reinterpret_cast<void*>(GetCurrentThread());
    m_id = GetCurrentThreadId();
}
}}}

The thread::join() properly asserts the property, but still attempts to join a non-joinable thread:

{{{
void thread::join()
{
    assert(m_joinable); //See race condition comment below
    int res = 0;

    res = WaitForSingleObject(reinterpret_cast<HANDLE>(m_thread), INFINITE);
    assert(res == WAIT_OBJECT_0);
    res = CloseHandle(reinterpret_cast<HANDLE>(m_thread));
    assert(res);
    // This isn't a race condition since any race that could occur would
    // have us in undefined behavior territory any way.
    m_joinable = false;
}
}}}

Related to https://svn.boost.org/trac/boost/ticket/5838 and https://svn.boost.org/trac/boost/ticket/5842.",Bugs,closed,,thread,Boost 1.47.0,Problem,invalid,,viboes