| /* |
| * Copyright (c) 2018, 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. |
| */ |
| |
| /** |
| * @test |
| * @bug 8200696 |
| * @summary Initial capacity of Class.enumConstantDirectory is not optimal |
| * @library /lib/testlibrary |
| * @modules java.base/java.lang:open |
| * java.base/java.util:open |
| * @build jdk.testlibrary.OptimalCapacity |
| * @run main ConstantDirectoryOptimalCapacity |
| */ |
| |
| import jdk.testlibrary.OptimalCapacity; |
| |
| public class ConstantDirectoryOptimalCapacity { |
| |
| public static void main(String[] args) throws Throwable { |
| test(E1.class); |
| test(E2.class); |
| test(E3.class); |
| test(E4.class); |
| test(E5.class); |
| test(E6.class); |
| test(E7.class); |
| test(E8.class); |
| test(E9.class); |
| test(E10.class); |
| test(E11.class); |
| test(E12.class); |
| test(E13.class); |
| test(E14.class); |
| test(E15.class); |
| test(E16.class); |
| test(E17.class); |
| test(E18.class); |
| test(E19.class); |
| test(E20.class); |
| test(E21.class); |
| test(E22.class); |
| test(E23.class); |
| test(E24.class); |
| test(E25.class); |
| test(E26.class); |
| } |
| |
| private static void test(Class<? extends Enum> e) { |
| Enum.valueOf(e, "V0"); // trigger init of enumConstantDirectory |
| |
| int initialCapacity = (int)(e.getEnumConstants().length / 0.75f) + 1; |
| OptimalCapacity.ofHashMap(e.getClass(), e, "enumConstantDirectory", |
| initialCapacity); |
| } |
| |
| enum E1 { V0 } |
| enum E2 { V0, V1 } |
| enum E3 { V0, V1, V2 } |
| enum E4 { V0, V1, V2, V3 } |
| enum E5 { V0, V1, V2, V3, V4 } |
| enum E6 { V0, V1, V2, V3, V4, V5 } |
| enum E7 { V0, V1, V2, V3, V4, V5, V6 } |
| enum E8 { V0, V1, V2, V3, V4, V5, V6, V7 } |
| enum E9 { V0, V1, V2, V3, V4, V5, V6, V7, V8 } |
| enum E10 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9 } |
| enum E11 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10 } |
| enum E12 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11 } |
| enum E13 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12 } |
| enum E14 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13 } |
| enum E15 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14 } |
| enum E16 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15 } |
| enum E17 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16 } |
| enum E18 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17 } |
| enum E19 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17, V18 } |
| enum E20 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17, V18, V19 } |
| enum E21 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17, V18, V19, V20 } |
| enum E22 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17, V18, V19, V20, V21 } |
| enum E23 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17, V18, V19, V20, V21, V22 } |
| enum E24 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17, V18, V19, V20, V21, V22, V23 } |
| enum E25 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17, V18, V19, V20, V21, V22, V23, V24 } |
| enum E26 { V0, V1, V2, V3, V4, V5, V6, V7, V8, V9, V10, V11, V12, V13, |
| V14, V15, V16, V17, V18, V19, V20, V21, V22, V23, V24, V25 } |
| } |