rev 6886 : 8058251: assert(_count > 0) failed: Negative counter when running runtime/NMT/MallocTrackingVerify.java
Summary: Fixed an issue when overflowing the MallocSite hash table bucket
Reviewed-by: coleenp, gtriantafill

          --- old/hotspot/src/share/vm/services/mallocTracker.inline.hpp
          +++ new/hotspot/src/share/vm/services/mallocTracker.inline.hpp

   1    1  /*
   2    2   * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
   3    3   * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4    4   *
   5    5   * This code is free software; you can redistribute it and/or modify it
   6    6   * under the terms of the GNU General Public License version 2 only, as
   7    7   * published by the Free Software Foundation.
   8    8   *
   9    9   * This code is distributed in the hope that it will be useful, but WITHOUT
  10   10   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11   11   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12   12   * version 2 for more details (a copy is included in the LICENSE file that
  13   13   * accompanied this code).
  14   14   *
  15   15   * You should have received a copy of the GNU General Public License version
  16   16   * 2 along with this work; if not, write to the Free Software Foundation,
  17   17   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18   18   *
  19   19   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20   20   * or visit www.oracle.com if you need additional information or have any

  21   21   * questions.
  22   22   *
  23   23   */
  24   24  
  25   25  #ifndef SHARE_VM_SERVICES_MALLOC_TRACKER_INLINE_HPP
  26   26  #define SHARE_VM_SERVICES_MALLOC_TRACKER_INLINE_HPP
  27   27  
  28   28  #include "services/mallocTracker.hpp"
  29   29  #include "services/memTracker.hpp"
  30   30  
  31      -inline NMT_TrackingLevel MallocTracker::get_memory_tracking_level(void* memblock) {
  32      -  assert(memblock != NULL, "Sanity check");
  33      -  if (MemTracker::tracking_level() == NMT_off) return NMT_off;
  34      -  MallocHeader* header = malloc_header(memblock);
  35      -  return header->tracking_level();
  36      -}
  37      -
  38   31  inline void* MallocTracker::get_base(void* memblock){
  39   32    return get_base(memblock, MemTracker::tracking_level());
  40   33  }
  41   34  
  42   35  #endif // SHARE_VM_SERVICES_MALLOC_TRACKER_INLINE_HPP
  43   36  
    

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