1 /*
2 * Copyright (c) 2001, 2015, 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 "gc/shared/collectedHeap.hpp"
27 #include "memory/freeBlockDictionary.hpp"
28 #include "memory/freeList.hpp"
29 #include "memory/metachunk.hpp"
30 #include "runtime/globals.hpp"
31 #include "runtime/mutex.hpp"
32 #include "runtime/vmThread.hpp"
33 #include "utilities/macros.hpp"
34 #if INCLUDE_ALL_GCS
35 #include "gc/cms/freeChunk.hpp"
36 #endif // INCLUDE_ALL_GCS
37
38 // Free list. A FreeList is used to access a linked list of chunks
39 // of space in the heap. The head and tail are maintained so that
40 // items can be (as in the current implementation) added at the
41 // at the tail of the list and removed from the head of the list to
42 // maintain a FIFO queue.
43
44 template <class Chunk>
45 FreeList<Chunk>::FreeList() :
46 _head(NULL), _tail(NULL)
47 #ifdef ASSERT
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1 /*
2 * Copyright (c) 2001, 2017, 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 "gc/shared/collectedHeap.hpp"
27 #include "memory/freeList.hpp"
28 #include "memory/metachunk.hpp"
29 #include "runtime/globals.hpp"
30 #include "runtime/mutex.hpp"
31 #include "runtime/vmThread.hpp"
32 #include "utilities/macros.hpp"
33 #if INCLUDE_ALL_GCS
34 #include "gc/cms/freeChunk.hpp"
35 #endif // INCLUDE_ALL_GCS
36
37 // Free list. A FreeList is used to access a linked list of chunks
38 // of space in the heap. The head and tail are maintained so that
39 // items can be (as in the current implementation) added at the
40 // at the tail of the list and removed from the head of the list to
41 // maintain a FIFO queue.
42
43 template <class Chunk>
44 FreeList<Chunk>::FreeList() :
45 _head(NULL), _tail(NULL)
46 #ifdef ASSERT
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