1 /*
2 * Copyright (c) 2016, 2019, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_INLINE_HPP
25 #define SHARE_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_INLINE_HPP
26
27 #include "gc/shared/taskqueue.inline.hpp"
28 #include "gc/shenandoah/shenandoahTaskqueue.hpp"
29 #include "utilities/stack.inline.hpp"
30
31 template <class E, MEMFLAGS F, unsigned int N>
pop(E & t)32 bool BufferedOverflowTaskQueue<E, F, N>::pop(E &t) {
33 if (!_buf_empty) {
34 t = _elem;
35 _buf_empty = true;
36 return true;
37 }
38
39 if (taskqueue_t::pop_local(t)) {
40 return true;
41 }
42
43 return taskqueue_t::pop_overflow(t);
44 }
45
46 template <class E, MEMFLAGS F, unsigned int N>
push(E t)47 inline bool BufferedOverflowTaskQueue<E, F, N>::push(E t) {
48 if (_buf_empty) {
49 _elem = t;
50 _buf_empty = false;
51 } else {
52 bool pushed = taskqueue_t::push(_elem);
53 assert(pushed, "overflow queue should always succeed pushing");
54 _elem = t;
55 }
56 return true;
57 }
58
59 template <class E, MEMFLAGS F, unsigned int N>
clear()60 void BufferedOverflowTaskQueue<E, F, N>::clear() {
61 _buf_empty = true;
62 taskqueue_t::set_empty();
63 taskqueue_t::overflow_stack()->clear();
64 }
65
66
67 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_INLINE_HPP
68