1 /*
   2  * Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
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  24 
  25 #ifndef SHARE_VM_MEMORY_SPACE_INLINE_DISP_HPP
  26 #define SHARE_VM_MEMORY_SPACE_INLINE_DISP_HPP
  27 
  28 #include "memory/space.hpp"
  29 #include "oops/oop.inline.hpp"
  30 #include "runtime/prefetch.hpp"
  31 
  32 template <bool nv, typename OopClosureType>
  33 void ContiguousSpace::
  34 cspace_oop_since_save_marks_iterate(OopClosureType* blk) {
  35   HeapWord* t;
  36   HeapWord* p = saved_mark_word();
  37   assert(p != NULL, "expected saved mark");
  38 
  39   const intx interval = PrefetchScanIntervalInBytes;
  40   do {
  41     t = top();
  42     while (p < t) {
  43       Prefetch::write(p, interval);
  44       debug_only(HeapWord* prev = p);
  45       oop m = oop(p);
  46       p += m->oop_iterate<nv>(blk);
  47     }
  48   } while (t < top());
  49 
  50   set_saved_mark_word(p);
  51 }
  52 
  53 #endif // SHARE_VM_MEMORY_SPACE_INLINE_DISP_HPP