Method join

rtpose_wrapper/src/gtest/gtest.h:9063–9070

Join an existing circle. L < g_linked_ptr_mutex

  // Join an existing circle.
  // L < g_linked_ptr_mutex
  void join(linked_ptr_internal const* ptr) {
    MutexLock lock(&g_linked_ptr_mutex);

    linked_ptr_internal const* p = ptr;
    while (p->next_ != ptr) p = p->next_;
    p->next_ = this;
    next_ = ptr;
  }

  // Leave whatever circle we're part of.  Returns true if we were the
  // last member of the circle.  Once this is done, you can join() another.