1 /*
2 * Copyright (c) 2000, 2014, 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 *
85 // strictly above
86 return MemRegion(start(), end());
87 }
88 if (mr2.start() >= start() && mr2.end() >= end()) {
89 // overlap ending
90 return MemRegion(start(), mr2.start());
91 }
92 if (mr2.start() <= start() && mr2.end() >= end()) {
93 // completely overlapping
94 return MemRegion();
95 }
96 if (mr2.start() > start() && mr2.end() < end()) {
97 // interior
98 guarantee(false, "MemRegion::minus, but interior");
99 return MemRegion();
100 }
101 ShouldNotReachHere();
102 return MemRegion();
103 }
104
105 void* MemRegion::operator new(size_t size) throw() {
106 return (address)AllocateHeap(size, mtGC, CURRENT_PC,
107 AllocFailStrategy::RETURN_NULL);
108 }
109
110 void* MemRegion::operator new [](size_t size) throw() {
111 return (address)AllocateHeap(size, mtGC, CURRENT_PC,
112 AllocFailStrategy::RETURN_NULL);
113 }
114 void MemRegion::operator delete(void* p) {
115 FreeHeap(p);
116 }
117
118 void MemRegion::operator delete [](void* p) {
119 FreeHeap(p);
120 }
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1 /*
2 * Copyright (c) 2000, 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 *
85 // strictly above
86 return MemRegion(start(), end());
87 }
88 if (mr2.start() >= start() && mr2.end() >= end()) {
89 // overlap ending
90 return MemRegion(start(), mr2.start());
91 }
92 if (mr2.start() <= start() && mr2.end() >= end()) {
93 // completely overlapping
94 return MemRegion();
95 }
96 if (mr2.start() > start() && mr2.end() < end()) {
97 // interior
98 guarantee(false, "MemRegion::minus, but interior");
99 return MemRegion();
100 }
101 ShouldNotReachHere();
102 return MemRegion();
103 }
104
105 MemRegion* MemRegion::create_array(uint length, MEMFLAGS flags) {
106 MemRegion* result = NEW_C_HEAP_ARRAY(MemRegion, length, flags);
107 for (uint i = 0; i < length; i++) {
108 ::new (&result[i]) MemRegion();
109 }
110 return result;
111 }
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