1 /*
2 * Copyright (c) 2016, 2019, Red Hat, Inc. 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 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_INLINE_HPP
26 #define SHARE_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_INLINE_HPP
27
28 #include "gc/shared/taskqueue.inline.hpp"
29 #include "gc/shenandoah/shenandoahTaskqueue.hpp"
30 #include "utilities/stack.inline.hpp"
31
32 template <class E, MEMFLAGS F, unsigned int N>
pop(E & t)33 bool BufferedOverflowTaskQueue<E, F, N>::pop(E &t) {
34 if (!_buf_empty) {
35 t = _elem;
36 _buf_empty = true;
37 return true;
38 }
39
40 if (taskqueue_t::pop_local(t)) {
41 return true;
42 }
43
44 return taskqueue_t::pop_overflow(t);
45 }
46
47 template <class E, MEMFLAGS F, unsigned int N>
push(E t)48 inline bool BufferedOverflowTaskQueue<E, F, N>::push(E t) {
49 if (_buf_empty) {
50 _elem = t;
51 _buf_empty = false;
52 } else {
53 bool pushed = taskqueue_t::push(_elem);
54 assert(pushed, "overflow queue should always succeed pushing");
55 _elem = t;
56 }
57 return true;
58 }
59
60 template <class E, MEMFLAGS F, unsigned int N>
clear()61 void BufferedOverflowTaskQueue<E, F, N>::clear() {
62 _buf_empty = true;
63 taskqueue_t::set_empty();
64 taskqueue_t::overflow_stack()->clear();
65 }
66
67
68 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_INLINE_HPP
69