1 /* 2 * Copyright (c) 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 #ifndef SHARE_GC_SHARED_BARRIERSET_INLINE_HPP 25 #define SHARE_GC_SHARED_BARRIERSET_INLINE_HPP 26 27 #include "gc/shared/barrierSet.hpp" 28 29 #include "oops/accessDecorators.hpp" 30 #include "oops/arrayOop.hpp" 31 #include "oops/compressedOops.inline.hpp" 32 #include "oops/objArrayOop.inline.hpp" 33 #include "oops/oop.hpp" 34 35 template <DecoratorSet decorators, typename BarrierSetT> 36 template <typename T> 37 inline bool BarrierSet::AccessBarrier<decorators, BarrierSetT>::oop_arraycopy_in_heap(arrayOop src_obj, size_t src_offset_in_bytes, T* src_raw, 38 arrayOop dst_obj, size_t dst_offset_in_bytes, T* dst_raw, 39 size_t length) { 40 T* src = arrayOopDesc::obj_offset_to_raw(src_obj, src_offset_in_bytes, src_raw); 41 T* dst = arrayOopDesc::obj_offset_to_raw(dst_obj, dst_offset_in_bytes, dst_raw); 42 43 if (!HasDecorator<decorators, ARRAYCOPY_CHECKCAST>::value) { 44 // Covariant, copy without checks 45 return Raw::oop_arraycopy(nullptr, 0, src, nullptr, 0, dst, length); 46 } 47 48 // Copy each element with checking casts 49 Klass* const dst_klass = objArrayOop(dst_obj)->element_klass(); 50 for (const T* const end = src + length; src < end; src++, dst++) { 51 const T elem = *src; 52 if (!oopDesc::is_instanceof_or_null(CompressedOops::decode(elem), dst_klass)) { 53 return false; 54 } 55 *dst = elem; 56 } 57 58 return true; 59 } 60 61 #endif // SHARE_GC_SHARED_BARRIERSET_INLINE_HPP --- EOF ---