src/share/vm/runtime/thread.cpp

*** 838,847 ****
--- 838,857 ----
    if (osthread()) {
      st->print(" [id=%d]", osthread()->thread_id());
    }
  }
  
+ void JavaThread::print_vt_buffer_stats_on(outputStream* st) const {
+   st->print_cr("%s:", this->name());
+   st->print_cr("\tChunks in use  : %d", vtchunk_in_use());
+   st->print_cr("\tCached chunk   : %d", local_free_chunk() == NULL ? 0 : 1);
+   st->print_cr("\tMax chunks     : %d", vtchunk_max());
+   st->print_cr("\tReturned chunks: %d", vtchunk_total_returned());
+   st->print_cr("\tMemory buffered: %ld", vtchunk_total_memory_buffered());
+   st->print_cr("");
+ }
+ 
  #ifdef ASSERT
  void Thread::print_owned_locks_on(outputStream* st) const {
    Monitor *cur = _owned_locks;
    if (cur == NULL) {
      st->print(" (no locks) ");
*** 1509,1518 ****
--- 1519,1538 ----
    _popframe_condition = popframe_inactive;
    _popframe_preserved_args = NULL;
    _popframe_preserved_args_size = 0;
    _frames_to_pop_failed_realloc = 0;
  
+   // Buffered value types support
+   _vt_alloc_ptr = NULL;
+   _vt_alloc_limit = NULL;
+   _local_free_chunk = NULL;
+   // Buffered value types instrumentation support
+   _vtchunk_in_use = 0;
+   _vtchunk_max = 0;
+   _vtchunk_total_returned = 0;
+   _vtchunk_total_memory_buffered = 0;
+ 
    pd_initialize();
  }
  
  #if INCLUDE_ALL_GCS
  SATBMarkQueueSet JavaThread::_satb_mark_queue_set;
*** 2819,2829 ****
--- 2839,2852 ----
    }
  
    // Traverse instance variables at the end since the GC may be moving things
    // around using this function
    f->do_oop((oop*) &_threadObj);
+   // if (Universe::heap()->is_in_reserved_or_null((void*)_vm_result)) {
+     if (!VTBufferChunk::check_buffered(&_vm_result)) {
      f->do_oop((oop*) &_vm_result);
+   }
    f->do_oop((oop*) &_exception_oop);
    f->do_oop((oop*) &_pending_async_exception);
  
    if (jvmti_thread_state() != NULL) {
      jvmti_thread_state()->oops_do(f);
*** 4875,4879 ****
--- 4898,4908 ----
      p->verify();
    }
    VMThread* thread = VMThread::vm_thread();
    if (thread != NULL) thread->verify();
  }
+ 
+ void Threads::print_vt_buffer_stats_on(outputStream* st) {
+   ALL_JAVA_THREADS(p) {
+     p->print_vt_buffer_stats_on(st);
+   }
+ }