src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/tools/PStack.java

rev 54717 : imported patch 8223306

*** 198,209 ****
  
     private void initJFrameCache() {
        // cache frames for subsequent reference
        jframeCache = new HashMap();
        proxyToThread = new HashMap();
!       Threads threads = VM.getVM().getThreads();
!       for (JavaThread cur = threads.first(); cur != null; cur = cur.next()) {
           List tmp = new ArrayList(10);
           try {
              for (JavaVFrame vf = cur.getLastJavaVFrameDbg(); vf != null; vf = vf.javaSender()) {
                 tmp.add(vf);
              }
--- 198,208 ----
  
     private void initJFrameCache() {
        // cache frames for subsequent reference
        jframeCache = new HashMap();
        proxyToThread = new HashMap();
!       VM.getVM().getThreads().doJavaThreads((cur) -> {
           List tmp = new ArrayList(10);
           try {
              for (JavaVFrame vf = cur.getLastJavaVFrameDbg(); vf != null; vf = vf.javaSender()) {
                 tmp.add(vf);
              }
*** 214,224 ****
           }
           JavaVFrame[] jvframes = new JavaVFrame[tmp.size()];
           System.arraycopy(tmp.toArray(), 0, jvframes, 0, jvframes.length);
           jframeCache.put(cur.getThreadProxy(), jvframes);
           proxyToThread.put(cur.getThreadProxy(), cur);
!       }
     }
  
     private void printUnknown(PrintStream out) {
        out.println("\t????????");
     }
--- 213,223 ----
           }
           JavaVFrame[] jvframes = new JavaVFrame[tmp.size()];
           System.arraycopy(tmp.toArray(), 0, jvframes, 0, jvframes.length);
           jframeCache.put(cur.getThreadProxy(), jvframes);
           proxyToThread.put(cur.getThreadProxy(), cur);
!       });
     }
  
     private void printUnknown(PrintStream out) {
        out.println("\t????????");
     }