* Add a finalize function for iof framework and add a finalize function for

the svc component so that it can disable the rml exception callback, fixing
  a race condition in the shutdown mechanism of orte.

  This should probably go to the v1.0 branch.

This commit was SVN r8893.

orte/mca/iof/base/iof_base_close.c

@@ -41,6 +41,11 @@ int orte_iof_base_close(void)
         orte_iof_base.iof_flush = false;
     }
 
+    /* finalize component */
+    if (NULL != orte_iof.iof_finalize) {
+        orte_iof.iof_finalize();
+    }
+
     /* shutdown any remaining opened components */
     if (0 != opal_list_get_size(&orte_iof_base.iof_components_opened)) {
         mca_base_components_close(orte_iof_base.iof_output, 

orte/mca/iof/iof.h

@@ -164,6 +164,8 @@ typedef int (*orte_iof_base_unsubscribe_fn_t)(
 
 typedef int (*orte_iof_base_flush_fn_t)(void);
 
+typedef int (*orte_iof_base_finalize_fn_t)(void);
+
 /**
  *  IOF module.
  */
@@ -176,6 +178,7 @@ struct orte_iof_base_module_1_0_0_t {
     orte_iof_base_subscribe_fn_t iof_subscribe;
     orte_iof_base_unsubscribe_fn_t iof_unsubscribe;
     orte_iof_base_flush_fn_t iof_flush;
+    orte_iof_base_finalize_fn_t iof_finalize;
 };
 
 typedef struct orte_iof_base_module_1_0_0_t orte_iof_base_module_1_0_0_t;

orte/mca/iof/svc/iof_svc.c

@@ -41,7 +41,8 @@ orte_iof_base_module_t orte_iof_svc_module = {
     orte_iof_svc_pull,
     orte_iof_svc_subscribe,
     orte_iof_svc_unsubscribe,
-    orte_iof_base_flush
+    orte_iof_base_flush,
+    orte_iof_svc_finalize
 };
 
 
@@ -265,4 +266,3 @@ int orte_iof_svc_unsubscribe(
     /* cleanup any locally registered callback */
     return orte_iof_base_callback_delete(ORTE_RML_NAME_SELF,src_tag);
 }
-

orte/mca/iof/svc/iof_svc.h

@@ -133,6 +133,8 @@ int orte_iof_svc_unsubscribe(
     orte_iof_base_tag_t src_tag
 );
 
+int orte_iof_svc_finalize(void);
+
 /**
  * IOF svc Component 
  */

orte/mca/iof/svc/iof_svc_component.c

@@ -182,3 +182,11 @@ orte_iof_svc_init(int* priority, bool *allow_multi_user_threads, bool *have_hidd
     return &orte_iof_svc_module;
 }
 
+
+int
+orte_iof_svc_finalize(void)
+{
+    orte_rml.del_exception_handler(orte_iof_svc_exception_handler);
+
+    return OMPI_SUCCESS;
+}