1 /*
   2  * Copyright (c) 2002, 2012, 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
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "utilities/macros.hpp"
  27 #if INCLUDE_ALL_GCS
  28 #include "gc_implementation/concurrentMarkSweep/freeChunk.hpp"
  29 #endif // INCLUDE_ALL_GCS
  30 #include "memory/freeBlockDictionary.hpp"
  31 #include "memory/metablock.hpp"
  32 #include "memory/metachunk.hpp"
  33 #include "runtime/thread.inline.hpp"
  34 #include "utilities/macros.hpp"
  35 
  36 #ifndef PRODUCT
  37 template <class Chunk> Mutex* FreeBlockDictionary<Chunk>::par_lock() const {
  38   return _lock;
  39 }
  40 
  41 template <class Chunk> void FreeBlockDictionary<Chunk>::set_par_lock(Mutex* lock) {
  42   _lock = lock;
  43 }
  44 
  45 template <class Chunk> void FreeBlockDictionary<Chunk>::verify_par_locked() const {
  46 #ifdef ASSERT
  47   if (ParallelGCThreads > 0) {
  48     Thread* my_thread = Thread::current();
  49     if (my_thread->is_GC_task_thread()) {
  50       assert(par_lock() != NULL, "Should be using locking?");
  51       assert_lock_strong(par_lock());
  52     }
  53   }
  54 #endif // ASSERT
  55 }
  56 #endif
  57 
  58 template class FreeBlockDictionary<Metablock>;
  59 template class FreeBlockDictionary<Metachunk>;
  60 
  61 #if INCLUDE_ALL_GCS
  62 // Explicitly instantiate for FreeChunk
  63 template class FreeBlockDictionary<FreeChunk>;
  64 #endif // INCLUDE_ALL_GCS