1 /* 2 * Copyright (c) 2010, 2020, 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 25 #ifndef SHARE_OOPS_OBJARRAYKLASS_INLINE_HPP 26 #define SHARE_OOPS_OBJARRAYKLASS_INLINE_HPP 27 28 #include "oops/objArrayKlass.hpp" 29 30 #include "memory/memRegion.hpp" 31 #include "memory/iterator.hpp" 32 #include "oops/arrayKlass.hpp" 33 #include "oops/arrayOop.hpp" 34 #include "oops/klass.hpp" 35 #include "oops/objArrayOop.inline.hpp" 36 #include "oops/oop.inline.hpp" 37 #include "utilities/macros.hpp" 38 39 template <typename T, class OopClosureType> 40 void ObjArrayKlass::oop_oop_iterate_elements(objArrayOop a, OopClosureType* closure) { 41 T* p = (T*)a->base(); 42 T* const end = p + a->length(); 43 44 for (;p < end; p++) { 45 Devirtualizer::do_oop(closure, p); 46 } 47 } 48 49 template <typename T, class OopClosureType> 50 void ObjArrayKlass::oop_oop_iterate_elements_bounded( 51 objArrayOop a, OopClosureType* closure, void* low, void* high) { 52 53 T* const l = (T*)low; 54 T* const h = (T*)high; 55 56 T* p = (T*)a->base(); 57 T* end = p + a->length(); 58 59 if (p < l) { 60 p = l; 61 } 62 if (end > h) { 63 end = h; 64 } 65 66 for (;p < end; ++p) { 67 Devirtualizer::do_oop(closure, p); 68 } 69 } 70 71 template <typename T, typename OopClosureType> 72 void ObjArrayKlass::oop_oop_iterate(oop obj, OopClosureType* closure) { 73 objArrayOop a = objArrayOop(obj); 74 75 if (Devirtualizer::do_metadata(closure)) { 76 Devirtualizer::do_klass(closure, obj->klass()); 77 } 78 79 oop_oop_iterate_elements<T>(a, closure); 80 } 81 82 template <typename T, typename OopClosureType> 83 void ObjArrayKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) { 84 // No reverse implementation ATM. 85 oop_oop_iterate<T>(obj, closure); 86 } 87 88 template <typename T, typename OopClosureType> 89 void ObjArrayKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) { 90 assert(obj->is_array(), "obj must be array"); 91 objArrayOop a = objArrayOop(obj); 92 93 if (Devirtualizer::do_metadata(closure)) { 94 Devirtualizer::do_klass(closure, a->klass()); 95 } 96 97 oop_oop_iterate_elements_bounded<T>(a, closure, mr.start(), mr.end()); 98 } 99 100 // Like oop_oop_iterate but only iterates over a specified range and only used 101 // for objArrayOops. 102 template <typename T, class OopClosureType> 103 void ObjArrayKlass::oop_oop_iterate_range(objArrayOop a, OopClosureType* closure, int start, int end) { 104 T* low = (T*)a->base() + start; 105 T* high = (T*)a->base() + end; 106 107 oop_oop_iterate_elements_bounded<T>(a, closure, low, high); 108 } 109 110 // Placed here to resolve include cycle between objArrayKlass.inline.hpp and objArrayOop.inline.hpp 111 template <typename OopClosureType> 112 void objArrayOopDesc::oop_iterate_range(OopClosureType* blk, int start, int end) { 113 if (UseCompressedOops) { 114 ((ObjArrayKlass*)klass())->oop_oop_iterate_range<narrowOop>(this, blk, start, end); 115 } else { 116 ((ObjArrayKlass*)klass())->oop_oop_iterate_range<oop>(this, blk, start, end); 117 } 118 } 119 120 #endif // SHARE_OOPS_OBJARRAYKLASS_INLINE_HPP