Add warning about nested ThreadGroup objects

git-svn-id: https://svn.dealii.org/trunk@22859 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/include/deal.II/base/thread_management.h b/deal.II/include/deal.II/base/thread_management.h
index bcedd43bc208304d7b9d2f2a0a5457a651479532..5be475482fdfd1b8a446f752b9d581d557f3201b 100644 (file)
--- a/deal.II/include/deal.II/base/thread_management.h
+++ b/deal.II/include/deal.II/base/thread_management.h
@@ -3620,6 +3620,13 @@ namespace Threads
                                     * need to have the same return
                                     * value for the called function.
                                     *
+                                   * @warning On some operating
+                                   * systems, ThreadGroup objects
+                                   * cannot be nested, that is, A
+                                   * ThreadGroup may not be used in a
+                                   * function that was called by a
+                                   * ThreadGroup.
+                                   *
                                     * @author Wolfgang Bangerth, 2003
                                    * @ingroup threads
                                     */