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_VM_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_INLINE_HPP 25 #define SHARE_VM_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> 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> 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> 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_VM_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_INLINE_HPP