/*

 * Copyright (c) 2014, 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.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * 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

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 */

/*

 * @test TestStableObject

 * @summary tests on stable fields and arrays

 * @library /testlibrary

 * @compile -XDignore.symbol.file TestStableObject.java

 * @run main ClassFileInstaller

 *           java/lang/invoke/TestStableObject

 *           java/lang/invoke/TestStableObject$ObjectStable

 *           java/lang/invoke/TestStableObject$StaticObjectStable

 *           java/lang/invoke/TestStableObject$VolatileObjectStable

 *           java/lang/invoke/TestStableObject$ObjectArrayDim1

 *           java/lang/invoke/TestStableObject$ObjectArrayDim2

 *           java/lang/invoke/TestStableObject$ObjectArrayDim3

 *           java/lang/invoke/TestStableObject$ObjectArrayDim4

 *           java/lang/invoke/TestStableObject$ObjectArrayLowerDim0

 *           java/lang/invoke/TestStableObject$ObjectArrayLowerDim1

 *           java/lang/invoke/TestStableObject$NestedStableField

 *           java/lang/invoke/TestStableObject$NestedStableField$A

 *           java/lang/invoke/TestStableObject$NestedStableField1

 *           java/lang/invoke/TestStableObject$NestedStableField1$A

 *           java/lang/invoke/TestStableObject$NestedStableField2

 *           java/lang/invoke/TestStableObject$NestedStableField2$A

 *           java/lang/invoke/TestStableObject$NestedStableField3

 *           java/lang/invoke/TestStableObject$NestedStableField3$A

 *           java/lang/invoke/TestStableObject$Values

 *           java/lang/invoke/TestStableObject$DefaultValue

 *           java/lang/invoke/TestStableObject$ObjectArrayLowerDim2

 *

 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions

 *                   -XX:+UnlockDiagnosticVMOptions -XX:+FoldStableValues -XX:+UseCompressedOop

 *                   -server -XX:-TieredCompilation -Xcomp

 *                   -XX:CompileOnly=::get,::get1,::get2,::get3,::get4

 *                   java.lang.invoke.TestStableObject

 *

 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions

 *                   -XX:+UnlockDiagnosticVMOptions -XX:+FoldStableValues -XX:-UseCompressedOop

 *                   -server -XX:-TieredCompilation -Xcomp

 *                   -XX:CompileOnly=::get,::get1,::get2,::get3,::get4

 *                   java.lang.invoke.TestStableObject

 *

 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions

 *                   -XX:+UnlockDiagnosticVMOptions -XX:-FoldStableValues -XX:+UseCompressedOop

 *                   -server -XX:-TieredCompilation -Xcomp

 *                   -XX:CompileOnly=::get,::get1,::get2,::get3,::get4

 *                   java.lang.invoke.TestStableObject

 *

 * @run main/othervm -Xbootclasspath/a:. -XX:+IgnoreUnrecognizedVMOptions

 *                   -XX:+UnlockDiagnosticVMOptions -XX:-FoldStableValues -XX:-UseCompressedOop

 *                   -server -XX:-TieredCompilation -Xcomp

 *                   -XX:CompileOnly=::get,::get1,::get2,::get3,::get4

 *                   java.lang.invoke.TestStableObject

 */

package java.lang.invoke;

import com.sun.management.HotSpotDiagnosticMXBean;

import com.sun.management.VMOption;

import sun.management.ManagementFactoryHelper;

import java.lang.reflect.InvocationTargetException;

public class TestStableObject {

    public static void main(String[] args) throws Exception {

        System.out.println("@Stable enabled: "+isStableEnabled);

        System.out.println();

        run(DefaultValue.class);

        run(ObjectStable.class);

        run(StaticObjectStable.class);

        run(VolatileObjectStable.class);

        // @Stable arrays: Dim 1-4

        run(ObjectArrayDim1.class);

        run(ObjectArrayDim2.class);

        run(ObjectArrayDim3.class);

        run(ObjectArrayDim4.class);

        // @Stable Object field: dynamic arrays

        run(ObjectArrayLowerDim0.class);

        run(ObjectArrayLowerDim1.class);

        run(ObjectArrayLowerDim2.class);

        // Nested @Stable fields

        run(NestedStableField.class);

        run(NestedStableField1.class);

        run(NestedStableField2.class);

        run(NestedStableField3.class);

        if (failed) {

            throw new Error("TEST FAILED");

        }

    }

    /* ==================================================== */

    enum Values {A, B, C, D, E, F}

    static class DefaultValue {

        public @Stable Object v;

        public static final DefaultValue c = new DefaultValue();

        public static Object get() { return c.v; }

        public static void test() throws Exception {

                            Object val1 = get();

            c.v = Values.A; Object val2 = get();

            assertEquals(val1, null);

            assertEquals(val2, Values.A);

        }

    }

    /* ==================================================== */

    static class ObjectStable {

        public @Stable Values v;

        public static final ObjectStable c = new ObjectStable ();

        public static Values get() { return c.v; }

        public static void test() throws Exception {

            c.v = Values.A; Values val1 = get();

            c.v = Values.B; Values val2 = get();

            assertEquals(val1, Values.A);

            assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

        }

    }

    /* ==================================================== */

    static class StaticObjectStable {

        public static @Stable Values v;

        public static final ObjectStable c = new ObjectStable ();

        public static Values get() { return c.v; }

        public static void test() throws Exception {

            c.v = Values.A; Values val1 = get();

            c.v = Values.B; Values val2 = get();

            assertEquals(val1, Values.A);

            assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

        }

    }

    /* ==================================================== */

    static class VolatileObjectStable {

        public @Stable volatile Values v;

        public static final VolatileObjectStable c = new VolatileObjectStable ();

        public static Values get() { return c.v; }

        public static void test() throws Exception {

            c.v = Values.A; Values val1 = get();

            c.v = Values.B; Values val2 = get();

            assertEquals(val1, Values.A);

            assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

        }

    }

    /* ==================================================== */

    // @Stable array == field && all components are stable

    static class ObjectArrayDim1 {

        public @Stable Object[] v;

        public static final ObjectArrayDim1 c = new ObjectArrayDim1();

        public static Object get() { return c.v[0]; }

        public static Object get1() { return c.v[10]; }

        public static Object[] get2() { return c.v; }

        public static void test() throws Exception {

            {

                c.v = new Object[1]; c.v[0] = Values.A; Object val1 = get();

                                     c.v[0] = Values.B; Object val2 = get();

                assertEquals(val1, Values.A);

                assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

                c.v = new Object[1]; c.v[0] = Values.C; Object val3 = get();

                assertEquals(val3, (isStableEnabled ? Values.A : Values.C));

            }

            {

                c.v = new Object[20]; c.v[10] = Values.A; Object val1 = get1();

                                      c.v[10] = Values.B; Object val2 = get1();

                assertEquals(val1, Values.A);

                assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

                c.v = new Object[20]; c.v[10] = Values.C; Object val3 = get1();

                assertEquals(val3, (isStableEnabled ? Values.A : Values.C));

            }

            {

                c.v = new Object[1]; Object[] val1 = get2();

                c.v = new Object[1]; Object[] val2 = get2();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

        }

    }

    /* ==================================================== */

    static class ObjectArrayDim2 {

        public @Stable Object[][] v;

        public static final ObjectArrayDim2 c = new ObjectArrayDim2();

        public static Object get() { return c.v[0][0]; }

        public static Object[] get1() { return c.v[0]; }

        public static Object[][] get2() { return c.v; }

        public static void test() throws Exception {

            {

                c.v = new Object[1][1]; c.v[0][0] = Values.A; Object val1 = get();

                                        c.v[0][0] = Values.B; Object val2 = get();

                assertEquals(val1, Values.A);

                assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

                c.v = new Object[1][1]; c.v[0][0] = Values.C; Object val3 = get();

                assertEquals(val3, (isStableEnabled ? Values.A : Values.C));

                c.v[0] = new Object[1]; c.v[0][0] = Values.D; Object val4 = get();

                assertEquals(val4, (isStableEnabled ? Values.A : Values.D));

            }

            {

                c.v = new Object[1][1]; Object[] val1 = get1();

                c.v[0] = new Object[1]; Object[] val2 = get1();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[1][1]; Object[][] val1 = get2();

                c.v = new Object[1][1]; Object[][] val2 = get2();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

        }

    }

    /* ==================================================== */

    static class ObjectArrayDim3 {

        public @Stable Object[][][] v;

        public static final ObjectArrayDim3 c = new ObjectArrayDim3();

        public static Object get() { return c.v[0][0][0]; }

        public static Object[] get1() { return c.v[0][0]; }

        public static Object[][] get2() { return c.v[0]; }

        public static Object[][][] get3() { return c.v; }

        public static void test() throws Exception {

            {

                c.v = new Object[1][1][1]; c.v[0][0][0] = Values.A; Object val1 = get();

                                           c.v[0][0][0] = Values.B; Object val2 = get();

                assertEquals(val1, Values.A);

                assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

                c.v = new Object[1][1][1]; c.v[0][0][0] = Values.C; Object val3 = get();

                assertEquals(val3, (isStableEnabled ? Values.A : Values.C));

                c.v[0] = new Object[1][1]; c.v[0][0][0] = Values.D; Object val4 = get();

                assertEquals(val4, (isStableEnabled ? Values.A : Values.D));

                c.v[0][0] = new Object[1]; c.v[0][0][0] = Values.E; Object val5 = get();

                assertEquals(val5, (isStableEnabled ? Values.A : Values.E));

            }

            {

                c.v = new Object[1][1][1]; Object[] val1 = get1();

                c.v[0][0] = new Object[1]; Object[] val2 = get1();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[1][1][1]; Object[][] val1 = get2();

                c.v[0] = new Object[1][1]; Object[][] val2 = get2();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[1][1][1]; Object[][][] val1 = get3();

                c.v = new Object[1][1][1]; Object[][][] val2 = get3();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

        }

    }

    /* ==================================================== */

    static class ObjectArrayDim4 {

        public @Stable Object[][][][] v;

        public static final ObjectArrayDim4 c = new ObjectArrayDim4();

        public static Object get() { return c.v[0][0][0][0]; }

        public static Object[] get1() { return c.v[0][0][0]; }

        public static Object[][] get2() { return c.v[0][0]; }

        public static Object[][][] get3() { return c.v[0]; }

        public static Object[][][][] get4() { return c.v; }

        public static void test() throws Exception {

            {

                c.v = new Object[1][1][1][1]; c.v[0][0][0][0] = Values.A; Object val1 = get();

                                              c.v[0][0][0][0] = Values.B; Object val2 = get();

                assertEquals(val1, Values.A);

                assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

                c.v = new Object[1][1][1][1]; c.v[0][0][0][0] = Values.C; Object val3 = get();

                assertEquals(val3, (isStableEnabled ? Values.A : Values.C));

                c.v[0] = new Object[1][1][1]; c.v[0][0][0][0] = Values.D; Object val4 = get();

                assertEquals(val4, (isStableEnabled ? Values.A : Values.D));

                c.v[0][0] = new Object[1][1]; c.v[0][0][0][0] = Values.E; Object val5 = get();

                assertEquals(val5, (isStableEnabled ? Values.A : Values.E));

                c.v[0][0][0] = new Object[1]; c.v[0][0][0][0] = Values.F; Object val6 = get();

                assertEquals(val6, (isStableEnabled ? Values.A : Values.F));

            }

            {

                c.v = new Object[1][1][1][1]; Object[] val1 = get1();

                c.v[0][0][0] = new Object[1]; Object[] val2 = get1();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[1][1][1][1]; Object[][] val1 = get2();

                c.v[0][0] = new Object[1][1]; Object[][] val2 = get2();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[1][1][1][1]; Object[][][] val1 = get3();

                c.v[0] = new Object[1][1][1]; Object[][][] val2 = get3();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[1][1][1][1]; Object[][][][] val1 = get4();

                c.v = new Object[1][1][1][1]; Object[][][][] val2 = get4();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

        }

    }

    /* ==================================================== */

    // Dynamic Dim is higher than static

    static class ObjectArrayLowerDim0 {

        public @Stable Object v;

        public static final ObjectArrayLowerDim0 c = new ObjectArrayLowerDim0();

        public static Object get() { return ((Object[])c.v)[0]; }

        public static Object[] get1() { return (Object[])c.v; }

        public static void test() throws Exception {

            {

                c.v = new Object[1]; ((Object[])c.v)[0] = Values.A; Object val1 = get();

                                     ((Object[])c.v)[0] = Values.B; Object val2 = get();

                assertEquals(val1, Values.A);

                assertEquals(val2, Values.B);

            }

            {

                c.v = new Object[1]; Object[] val1 = get1();

                c.v = new Object[1]; Object[] val2 = get1();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

        }

    }

    /* ==================================================== */

    static class ObjectArrayLowerDim1 {

        public @Stable Object[] v;

        public static final ObjectArrayLowerDim1 c = new ObjectArrayLowerDim1();

        public static Object get() { return ((Object[][])c.v)[0][0]; }

        public static Object[] get1() { return (Object[])(c.v[0]); }

        public static Object[] get2() { return c.v; }

        public static void test() throws Exception {

            {

                c.v = new Object[1][1]; ((Object[][])c.v)[0][0] = Values.A; Object val1 = get();

                                        ((Object[][])c.v)[0][0] = Values.B; Object val2 = get();

                assertEquals(val1, Values.A);

                assertEquals(val2, Values.B);

            }

            {

                c.v = new Object[1][1]; c.v[0] = new Object[0]; Object[] val1 = get1();

                                     c.v[0] = new Object[0]; Object[] val2 = get1();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[0][0]; Object[] val1 = get2();

                c.v = new Object[0][0]; Object[] val2 = get2();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

        }

    }

    /* ==================================================== */

    static class ObjectArrayLowerDim2 {

        public @Stable Object[][] v;

        public static final ObjectArrayLowerDim2 c = new ObjectArrayLowerDim2();

        public static Object get() { return ((Object[][][])c.v)[0][0][0]; }

        public static Object[] get1() { return (Object[])(c.v[0][0]); }

        public static Object[][] get2() { return (Object[][])(c.v[0]); }

        public static Object[][] get3() { return c.v; }

        public static void test() throws Exception {

            {

                c.v = new Object[1][1][1]; ((Object[][][])c.v)[0][0][0] = Values.A; Object val1 = get();

                                           ((Object[][][])c.v)[0][0][0] = Values.B; Object val2 = get();

                assertEquals(val1, Values.A);

                assertEquals(val2, Values.B);

            }

            {

                c.v = new Object[1][1][1]; c.v[0][0] = new Object[0]; Object[] val1 = get1();

                                           c.v[0][0] = new Object[0]; Object[] val2 = get1();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[1][1][1]; c.v[0] = new Object[0][0]; Object[][] val1 = get2();

                                           c.v[0] = new Object[0][0]; Object[][] val2 = get2();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

            {

                c.v = new Object[0][0][0]; Object[][] val1 = get3();

                c.v = new Object[0][0][0]; Object[][] val2 = get3();

                assertTrue((isStableEnabled ? (val1 == val2) : (val1 != val2)));

            }

        }

    }

    /* ==================================================== */

    static class NestedStableField {

        static class A {

            public @Stable Object a;

        }

        public @Stable A v;

        public static final NestedStableField c = new NestedStableField();

        public static A get() { return c.v; }

        public static Object get1() { return get().a; }

        public static void test() throws Exception {

            {

                c.v = new A(); c.v.a = Values.A; A val1 = get();

                               c.v.a = Values.B; A val2 = get();

                assertEquals(val1.a, Values.B);

                assertEquals(val2.a, Values.B);

            }

            {

                c.v = new A(); c.v.a = Values.A; Object val1 = get1();

                               c.v.a = Values.B; Object val2 = get1();

                c.v = new A(); c.v.a = Values.C; Object val3 = get1();

                assertEquals(val1, Values.A);

                assertEquals(val2, (isStableEnabled ? Values.A : Values.B));

                assertEquals(val3, (isStableEnabled ? Values.A : Values.C));

            }

        }

    }

    /* ==================================================== */

    static class NestedStableField1 {

        static class A {

            public @Stable Object a;

            public @Stable A next;

        }

        public @Stable A v;

        public static final NestedStableField1 c = new NestedStableField1();

        public static A get() { return c.v.next.next.next.next.next.next.next; }

        public static Object get1() { return get().a; }

        public static void test() throws Exception {

            {

                c.v = new A(); c.v.next = new A();   c.v.next.next  = c.v;

                               c.v.a = Values.A; c.v.next.a = Values.A; A val1 = get();

                               c.v.a = Values.B; c.v.next.a = Values.B; A val2 = get();

                assertEquals(val1.a, Values.B);

                assertEquals(val2.a, Values.B);

            }

            {

                c.v = new A(); c.v.next = c.v;

                               c.v.a = Values.A; Object val1 = get1();

                               c.v.a = Values.B; Object val2 = get1();

                c.v = new A(); c.v.next = c.v;

                               c.v.a = Values.C; Object val3 = get1();