src/hotspot/share/services/mallocSiteTable.cpp

rev 47400 : [mq]: cmpxchg_ptr
rev 47401 : [mq]: cmpxchg_if_null

*** 145,155 ****
      MallocSiteHashtableEntry* entry = new_entry(key, flags);
      // OOM check
      if (entry == NULL) return NULL;
  
      // swap in the head
!     if (Atomic::cmpxchg_ptr((void*)entry, (volatile void *)&_table[index], NULL) == NULL) {
        return entry->data();
      }
  
      delete entry;
    }
--- 145,155 ----
      MallocSiteHashtableEntry* entry = new_entry(key, flags);
      // OOM check
      if (entry == NULL) return NULL;
  
      // swap in the head
!     if (Atomic::cmpxchg_if_null(entry, &_table[index])) {
        return entry->data();
      }
  
      delete entry;
    }
*** 255,259 ****
--- 255,263 ----
      os::naked_yield();
  #endif
    }
    _lock_state = ExclusiveLock;
  }
+ 
+ bool MallocSiteHashtableEntry::atomic_insert(const MallocSiteHashtableEntry* entry) {
+   return Atomic::cmpxchg_if_null(entry, (const MallocSiteHashtableEntry**)&_next);
+ }