1 /* 2 * Copyright (c) 2017, 2019, Oracle and/or its affiliates. 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 #ifndef SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP 25 #define SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP 26 27 #include "gc/z/zRelocationSet.hpp" 28 #include "runtime/atomic.hpp" 29 30 template <bool parallel> 31 inline ZRelocationSetIteratorImpl<parallel>::ZRelocationSetIteratorImpl(ZRelocationSet* relocation_set) : 32 _relocation_set(relocation_set), 33 _next(0) {} 34 35 template <bool parallel> 36 inline bool ZRelocationSetIteratorImpl<parallel>::next(ZForwarding** forwarding) { 37 const size_t nforwardings = _relocation_set->_nforwardings; 38 39 if (parallel) { 40 if (_next < nforwardings) { 41 const size_t next = Atomic::add(1u, &_next) - 1u; 42 if (next < nforwardings) { 43 *forwarding = _relocation_set->_forwardings[next]; 44 return true; 45 } 46 } 47 } else { 48 if (_next < nforwardings) { 49 *forwarding = _relocation_set->_forwardings[_next++]; 50 return true; 51 } 52 } 53 54 return false; 55 } 56 57 #endif // SHARE_GC_Z_ZRELOCATIONSET_INLINE_HPP