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src/share/vm/utilities/chunkedList.hpp@dc1769738300 (annotated)
src/share/vm/utilities/chunkedList.hpp
Tue, 24 Jul 2018 13:22:11 +0800
- author
- aoqi
- date
- Tue, 24 Jul 2018 13:22:11 +0800
- changeset 9137
- dc1769738300
- parent 7333
- b12a2a9b05ca
- permissions
- -rw-r--r--
#7048 added Loongson release info to hs_err crash files
| stefank@7333 | 1 | /* |
| stefank@7333 | 2 | * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| stefank@7333 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| stefank@7333 | 4 | * |
| stefank@7333 | 5 | * This code is free software; you can redistribute it and/or modify it |
| stefank@7333 | 6 | * under the terms of the GNU General Public License version 2 only, as |
| stefank@7333 | 7 | * published by the Free Software Foundation. |
| stefank@7333 | 8 | * |
| stefank@7333 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| stefank@7333 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| stefank@7333 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| stefank@7333 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| stefank@7333 | 13 | * accompanied this code). |
| stefank@7333 | 14 | * |
| stefank@7333 | 15 | * You should have received a copy of the GNU General Public License version |
| stefank@7333 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| stefank@7333 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| stefank@7333 | 18 | * |
| stefank@7333 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| stefank@7333 | 20 | * or visit www.oracle.com if you need additional information or have any |
| stefank@7333 | 21 | * questions. |
| stefank@7333 | 22 | * |
| stefank@7333 | 23 | */ |
| stefank@7333 | 24 | |
| stefank@7333 | 25 | #ifndef SHARE_VM_UTILITIES_CHUNKED_LIST_HPP |
| stefank@7333 | 26 | #define SHARE_VM_UTILITIES_CHUNKED_LIST_HPP |
| stefank@7333 | 27 | |
| stefank@7333 | 28 | #include "memory/allocation.hpp" |
| stefank@7333 | 29 | #include "utilities/debug.hpp" |
| stefank@7333 | 30 | |
| stefank@7333 | 31 | template <class T, MEMFLAGS F> class ChunkedList : public CHeapObj<F> { |
| stefank@7333 | 32 | template <class U> friend class TestChunkedList; |
| stefank@7333 | 33 | |
| stefank@7333 | 34 | static const size_t BufferSize = 64; |
| stefank@7333 | 35 | |
| stefank@7333 | 36 | T _values[BufferSize]; |
| stefank@7333 | 37 | T* _top; |
| stefank@7333 | 38 | |
| stefank@7333 | 39 | ChunkedList<T, F>* _next_used; |
| stefank@7333 | 40 | ChunkedList<T, F>* _next_free; |
| stefank@7333 | 41 | |
| stefank@7333 | 42 | T const * end() const { |
| stefank@7333 | 43 | return &_values[BufferSize]; |
| stefank@7333 | 44 | } |
| stefank@7333 | 45 | |
| stefank@7333 | 46 | public: |
| stefank@7333 | 47 | ChunkedList<T, F>() : _top(_values), _next_used(NULL), _next_free(NULL) {} |
| stefank@7333 | 48 | |
| stefank@7333 | 49 | bool is_full() const { |
| stefank@7333 | 50 | return _top == end(); |
| stefank@7333 | 51 | } |
| stefank@7333 | 52 | |
| stefank@7333 | 53 | void clear() { |
| stefank@7333 | 54 | _top = _values; |
| stefank@7333 | 55 | // Don't clear the next pointers since that would interfere |
| stefank@7333 | 56 | // with other threads trying to iterate through the lists. |
| stefank@7333 | 57 | } |
| stefank@7333 | 58 | |
| stefank@7333 | 59 | void push(T m) { |
| stefank@7333 | 60 | assert(!is_full(), "Buffer is full"); |
| stefank@7333 | 61 | *_top = m; |
| stefank@7333 | 62 | _top++; |
| stefank@7333 | 63 | } |
| stefank@7333 | 64 | |
| stefank@7333 | 65 | void set_next_used(ChunkedList<T, F>* buffer) { _next_used = buffer; } |
| stefank@7333 | 66 | void set_next_free(ChunkedList<T, F>* buffer) { _next_free = buffer; } |
| stefank@7333 | 67 | |
| stefank@7333 | 68 | ChunkedList<T, F>* next_used() const { return _next_used; } |
| stefank@7333 | 69 | ChunkedList<T, F>* next_free() const { return _next_free; } |
| stefank@7333 | 70 | |
| stefank@7333 | 71 | size_t size() const { |
| stefank@7333 | 72 | return pointer_delta(_top, _values, sizeof(T)); |
| stefank@7333 | 73 | } |
| stefank@7333 | 74 | |
| stefank@7333 | 75 | T at(size_t i) { |
| stefank@7333 | 76 | assert(i < size(), err_msg("IOOBE i: " SIZE_FORMAT " size(): " SIZE_FORMAT, i, size())); |
| stefank@7333 | 77 | return _values[i]; |
| stefank@7333 | 78 | } |
| stefank@7333 | 79 | }; |
| stefank@7333 | 80 | |
| stefank@7333 | 81 | #endif // SHARE_VM_UTILITIES_CHUNKED_LIST_HPP |
