Fix logic in determining whether all modules support multiple user

threads or not.

This commit was SVN r1361.

src/mca/base/mca_base_init_select_modules.c

@@ -43,13 +43,13 @@ int mca_base_init_select_modules(int requested,
                                          &user_threads, &hidden_threads)) {
     return OMPI_ERROR;
   }
-  allow_multi_user_threads |= user_threads;
+  allow_multi_user_threads &= user_threads;
   have_hidden_threads |= hidden_threads;
 
   if (OMPI_SUCCESS != mca_ptl_base_select(&user_threads, &hidden_threads)) {
     return OMPI_ERROR;
   }
-  allow_multi_user_threads |= user_threads;
+  allow_multi_user_threads &= user_threads;
   have_hidden_threads |= hidden_threads;
 
   OBJ_CONSTRUCT(&colls, ompi_list_t);
@@ -57,7 +57,7 @@ int mca_base_init_select_modules(int requested,
                                           &hidden_threads)) {
     return OMPI_ERROR;
   }
-  allow_multi_user_threads |= user_threads;
+  allow_multi_user_threads &= user_threads;
   have_hidden_threads |= hidden_threads;
 
   /* Now that we have a final list of all available modules, do the

src/mca/mpool/base/mpool_base_init.c

@@ -66,7 +66,7 @@ int mca_mpool_base_init(bool *allow_multi_user_threads)
       /* Otherwise, it initialized properly.  Save it. */
 
       else {
-        *allow_multi_user_threads |= user_threads;
+        *allow_multi_user_threads &= user_threads;
 
         ompi_output_verbose(10, mca_mpool_base_output,
                            "select: init returned success");

src/mca/ptl/base/ptl_base_select.c

@@ -65,7 +65,7 @@ int mca_ptl_base_select(bool *allow_multi_user_threads,
       /* Otherwise, it initialized properly.  Save it. */
 
       else {
-        *allow_multi_user_threads |= user_threads;
+        *allow_multi_user_threads &= user_threads;
         *have_hidden_threads |= hidden_threads;
 
         ompi_output_verbose(10, mca_ptl_base_output,

src/runtime/ompi_rte_init.c

@@ -27,7 +27,7 @@ int ompi_rte_init(bool *allow_multi_user_threads, bool *have_hidden_threads)
   int ret;
   bool user_threads, hidden_threads;
 
-  *allow_multi_user_threads = false;
+  *allow_multi_user_threads = true;
   *have_hidden_threads = false;
 
   /* Added by JMS -- feel free to move around */
@@ -41,7 +41,7 @@ int ompi_rte_init(bool *allow_multi_user_threads, bool *have_hidden_threads)
     /* JMS show_help */
     return ret;
   }
-  *allow_multi_user_threads |= user_threads;
+  *allow_multi_user_threads &= user_threads;
   *have_hidden_threads |= hidden_threads;
 
   if (OMPI_SUCCESS != (ret = mca_oob_base_open())) {
@@ -53,7 +53,7 @@ int ompi_rte_init(bool *allow_multi_user_threads, bool *have_hidden_threads)
     /* JMS show_help */
     return ret;
   }
-  *allow_multi_user_threads |= user_threads;
+  *allow_multi_user_threads &= user_threads;
   *have_hidden_threads |= hidden_threads;
 
 #if 0