src/share/vm/runtime/jniHandles.cpp

*** 22,31 ****
--- 22,32 ----
   *
   */
  
  #include "precompiled.hpp"
  #include "classfile/systemDictionary.hpp"
+ #include "logging/log.hpp"
  #include "oops/oop.inline.hpp"
  #include "prims/jvmtiExport.hpp"
  #include "runtime/jniHandles.hpp"
  #include "runtime/mutexLocker.hpp"
  #include "runtime/thread.inline.hpp"
*** 391,403 ****
          if (is_alive->do_object_b(value)) {
            // The weakly referenced object is alive, update pointer
            f->do_oop(root);
          } else {
            // The weakly referenced object is not alive, clear the reference by storing NULL
!           if (TraceReferenceGC) {
!             tty->print_cr("Clearing JNI weak reference (" INTPTR_FORMAT ")", p2i(root));
!           }
            *root = NULL;
          }
        }
      }
      // the next handle block is valid only if current block is full
--- 392,402 ----
          if (is_alive->do_object_b(value)) {
            // The weakly referenced object is alive, update pointer
            f->do_oop(root);
          } else {
            // The weakly referenced object is not alive, clear the reference by storing NULL
!           log_develop_trace(gc, ref)("Clearing JNI weak reference (" INTPTR_FORMAT ")", p2i(root));
            *root = NULL;
          }
        }
      }
      // the next handle block is valid only if current block is full