Better likely/unlikely hints to MPI.

This covers a small part of ticket #1835.

Better likely/unlikely hints to MPI.
This covers a small part of ticket #1835.
7a662589 · Pavan Balaji · d2cb6667 · 7a662589
Commit 7a662589 authored Jul 17, 2013 by Pavan Balaji
--- a/src/include/mpihandlemem.h
+++ b/src/include/mpihandlemem.h
@@ -329,7 +329,7 @@ typedef OPA_int_t MPIU_Handle_ref_count;
 #define MPIU_Object_add_ref(objptr_)                           \
    do {                                                       \
        int handle_kind_ = HANDLE_GET_KIND((objptr_)->handle); \
-        if (handle_kind_ != HANDLE_KIND_BUILTIN) {             \
+        if (unlikely(handle_kind_ != HANDLE_KIND_BUILTIN)) {   \
            MPIU_Object_add_ref_always((objptr_));             \
        }                                                      \
        else {                                                                                                 \
@@ -344,7 +344,7 @@ typedef OPA_int_t MPIU_Handle_ref_count;
 #define MPIU_Object_release_ref(objptr_,inuse_ptr_)                  \
    do {                                                             \
        int handle_kind_ = HANDLE_GET_KIND((objptr_)->handle);       \
-        if (handle_kind_ != HANDLE_KIND_BUILTIN) {                   \
+        if (unlikely(handle_kind_ != HANDLE_KIND_BUILTIN)) {         \
            MPIU_Object_release_ref_always((objptr_), (inuse_ptr_)); \
        }                                                            \
        else {                                                       \