src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/utilities/AbstractHeapGraphWriter.java

rev 54717 : imported patch 8223306

*** 127,145 ****
          }
      }
  
      protected void writeJavaThreads() throws IOException {
          Threads threads = VM.getVM().getThreads();
!         JavaThread jt = threads.first();
!         int index = 1;
!         while (jt != null) {
              if (jt.getThreadObj() != null) {
                  // Note that the thread serial number range is 1-to-N
!                 writeJavaThread(jt, index);
!                 index++;
              }
-             jt = jt.next();
          }
      }
  
      protected void writeJavaThread(JavaThread jt, int index)
                              throws IOException {
--- 127,142 ----
          }
      }
  
      protected void writeJavaThreads() throws IOException {
          Threads threads = VM.getVM().getThreads();
!         for (int i = 0; i < threads.getNumberOfThreads(); i++) {
!             JavaThread jt = threads.getJavaThreadAt(i);
              if (jt.getThreadObj() != null) {
                  // Note that the thread serial number range is 1-to-N
!                 writeJavaThread(jt, i+1);
              }
          }
      }
  
      protected void writeJavaThread(JavaThread jt, int index)
                              throws IOException {