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_implementation/shenandoah/shenandoahHeap.inline.hpp" 28 #include "utilities/stack.inline.hpp" 29 30 template <class E, MEMFLAGS F, unsigned int N> 31 bool BufferedOverflowTaskQueue<E, F, N>::pop(E &t) { 32 if (!_buf_empty) { 33 t = _elem; 34 _buf_empty = true; 35 return true; 36 } 37 38 if (taskqueue_t::pop_local(t)) { 39 return true; 40 } 41 42 return taskqueue_t::pop_overflow(t); 43 } 44 45 template <class E, MEMFLAGS F, unsigned int N> 46 inline bool BufferedOverflowTaskQueue<E, F, N>::push(E t) { 47 if (_buf_empty) { 48 _elem = t; 49 _buf_empty = false; 50 } else { 51 bool pushed = taskqueue_t::push(_elem); 52 assert(pushed, "overflow queue should always succeed pushing"); 53 _elem = t; 54 } 55 return true; 56 } 57 58 template <class E, MEMFLAGS F, unsigned int N> 59 void BufferedOverflowTaskQueue<E, F, N>::clear() { 60 _buf_empty = true; 61 taskqueue_t::set_empty(); 62 taskqueue_t::overflow_stack()->clear(); 63 } 64 65 66 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHTASKQUEUE_HPP