| /* |
| * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * JDK-8134609: Allow constructors with same prototoype map to share the allocator map |
| * |
| * @test |
| * @run |
| * @fork |
| * @option -Dnashorn.debug |
| */ |
| |
| function createProto(members) { |
| function P() { |
| for (var id in members) { |
| if (members.hasOwnProperty(id)) { |
| this[id] = members[id]; |
| } |
| } |
| return this; |
| } |
| return new P(); |
| } |
| |
| function createSubclass(prototype, members) { |
| function C() { |
| for (var id in members) { |
| if (members.hasOwnProperty(id)) { |
| this[id] = members[id]; |
| } |
| } |
| return this; |
| } |
| |
| C.prototype = prototype; |
| |
| return new C(); |
| } |
| |
| function assertP1(object, value) { |
| Assert.assertTrue(object.p1 === value); |
| } |
| |
| // First prototype will have non-shared proto-map. Second and third will be shared. |
| var proto0 = createProto({p1: 0, p2: 1}); |
| var proto1 = createProto({p1: 1, p2: 2}); |
| var proto2 = createProto({p1: 2, p2: 3}); |
| |
| Assert.assertTrue(Debug.map(proto1) === Debug.map(proto2)); |
| |
| assertP1(proto1, 1); |
| assertP1(proto2, 2); |
| |
| // First instantiation will have a non-shared prototype map, from the second one |
| // maps will be shared until a different proto map comes along. |
| var child0 = createSubclass(proto1, {c1: 1, c2: 2}); |
| var child1 = createSubclass(proto2, {c1: 2, c2: 3}); |
| var child2 = createSubclass(proto1, {c1: 3, c2: 4}); |
| var child3 = createSubclass(proto2, {c1: 1, c2: 2}); |
| var child4 = createSubclass(proto0, {c1: 3, c2: 2}); |
| |
| Assert.assertTrue(Debug.map(child1) === Debug.map(child2)); |
| Assert.assertTrue(Debug.map(child1) === Debug.map(child3)); |
| Assert.assertTrue(Debug.map(child3) !== Debug.map(child4)); |
| |
| assertP1(child1, 2); |
| assertP1(child2, 1); |
| assertP1(child3, 2); |
| assertP1(child4, 0); |
| |
| Assert.assertTrue(delete proto2.p1); |
| |
| assertP1(child3, undefined); |
| assertP1(child2, 1); |
| Assert.assertTrue(Debug.map(child1) !== Debug.map(child3)); |