/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * @test TestStableChar

 * @summary tests on stable fields and arrays

 * @library /testlibrary

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

 * @run main ClassFileInstaller

 *           java/lang/invoke/TestStableChar

 *           java/lang/invoke/TestStableChar$CharStable

 *           java/lang/invoke/TestStableChar$StaticCharStable

 *           java/lang/invoke/TestStableChar$VolatileCharStable

 *           java/lang/invoke/TestStableChar$CharArrayDim1

 *           java/lang/invoke/TestStableChar$CharArrayDim2

 *           java/lang/invoke/TestStableChar$CharArrayDim3

 *           java/lang/invoke/TestStableChar$CharArrayDim4

 *           java/lang/invoke/TestStableChar$ObjectArrayLowerDim0

 *           java/lang/invoke/TestStableChar$ObjectArrayLowerDim1

 *           java/lang/invoke/TestStableChar$NestedStableField

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

 *           java/lang/invoke/TestStableChar$NestedStableField1

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

 *           java/lang/invoke/TestStableChar$NestedStableField2

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

 *           java/lang/invoke/TestStableChar$NestedStableField3

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

 *           java/lang/invoke/TestStableChar$DefaultValue

 *           java/lang/invoke/TestStableChar$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.TestStableChar

 *

 * @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.TestStableChar

 *

 * @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.TestStableChar

 *

 * @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.TestStableChar

 */

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 TestStableChar {

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

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

        System.out.println();

        run(DefaultValue.class);

        run(CharStable.class);

        run(StaticCharStable.class);

        run(VolatileCharStable.class);

        // @Stable arrays: Dim 1-4

        run(CharArrayDim1.class);

        run(CharArrayDim2.class);

        run(CharArrayDim3.class);

        run(CharArrayDim4.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");

        }

    }

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

    static class DefaultValue {

        public @Stable char v;

        public static final DefaultValue c = new DefaultValue();

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

        public static void test() throws Exception {

                       char val1 = get();

            c.v = 'a'; char val2 = get();

            assertEquals(val1, 0);

            assertEquals(val2, 'a');

        }

    }

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

    static class CharStable {

        public @Stable char v;

        public static final CharStable c = new CharStable();

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

        public static void test() throws Exception {

            c.v = 'a'; char val1 = get();

            c.v = 'b'; char val2 = get();

            assertEquals(val1, 'a');

            assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

        }

    }

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

    static class StaticCharStable {

        public @Stable char v;

        public static final StaticCharStable c = new StaticCharStable();

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

        public static void test() throws Exception {

            c.v = 'a'; char val1 = get();

            c.v = 'b'; char val2 = get();

            assertEquals(val1, 'a');

            assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

        }

    }

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

    static class VolatileCharStable {

        public @Stable volatile char v;

        public static final VolatileCharStable c = new VolatileCharStable();

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

        public static void test() throws Exception {

            c.v = 'a'; char val1 = get();

            c.v = 'b'; char val2 = get();

            assertEquals(val1, 'a');

            assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

        }

    }

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

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

    static class CharArrayDim1 {

        public @Stable char[] v;

        public static final CharArrayDim1 c = new CharArrayDim1();

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

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

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

        public static void test() throws Exception {

            {

                c.v = new char[1]; c.v[0] = 'a'; char val1 = get();

                                   c.v[0] = 'b'; char val2 = get();

                assertEquals(val1, 'a');

                assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

                c.v = new char[1]; c.v[0] = 'c'; char val3 = get();

                assertEquals(val3, (isStableEnabled ? 'a' : 'c'));

            }

            {

                c.v = new char[20]; c.v[10] = 'a'; char val1 = get1();

                                    c.v[10] = 'b'; char val2 = get1();

                assertEquals(val1, 'a');

                assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

                c.v = new char[20]; c.v[10] = 'c'; char val3 = get1();

                assertEquals(val3, (isStableEnabled ? 'a' : 'c'));

            }

            {

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

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

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

            }

        }

    }

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

    static class CharArrayDim2 {

        public @Stable char[][] v;

        public static final CharArrayDim2 c = new CharArrayDim2();

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

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

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

        public static void test() throws Exception {

            {

                c.v = new char[1][1]; c.v[0][0] = 'a'; char val1 = get();

                                      c.v[0][0] = 'b'; char val2 = get();

                assertEquals(val1, 'a');

                assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

                c.v = new char[1][1]; c.v[0][0] = 'c'; char val3 = get();

                assertEquals(val3, (isStableEnabled ? 'a' : 'c'));

                c.v[0] = new char[1]; c.v[0][0] = 'd'; char val4 = get();

                assertEquals(val4, (isStableEnabled ? 'a' : 'd'));

            }

            {

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

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

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

            }

            {

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

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

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

            }

        }

    }

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

    static class CharArrayDim3 {

        public @Stable char[][][] v;

        public static final CharArrayDim3 c = new CharArrayDim3();

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

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

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

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

        public static void test() throws Exception {

            {

                c.v = new char[1][1][1]; c.v[0][0][0] = 'a'; char val1 = get();

                                         c.v[0][0][0] = 'b'; char val2 = get();

                assertEquals(val1, 'a');

                assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

                c.v = new char[1][1][1]; c.v[0][0][0] = 'c'; char val3 = get();

                assertEquals(val3, (isStableEnabled ? 'a' : 'c'));

                c.v[0] = new char[1][1]; c.v[0][0][0] = 'd'; char val4 = get();

                assertEquals(val4, (isStableEnabled ? 'a' : 'd'));

                c.v[0][0] = new char[1]; c.v[0][0][0] = 'e'; char val5 = get();

                assertEquals(val5, (isStableEnabled ? 'a' : 'e'));

            }

            {

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

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

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

            }

            {

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

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

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

            }

            {

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

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

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

            }

        }

    }

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

    static class CharArrayDim4 {

        public @Stable char[][][][] v;

        public static final CharArrayDim4 c = new CharArrayDim4();

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

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

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

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

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

        public static void test() throws Exception {

            {

                c.v = new char[1][1][1][1]; c.v[0][0][0][0] = 'a'; char val1 = get();

                                            c.v[0][0][0][0] = 'b'; char val2 = get();

                assertEquals(val1, 'a');

                assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

                c.v = new char[1][1][1][1]; c.v[0][0][0][0] = 'c'; char val3 = get();

                assertEquals(val3, (isStableEnabled ? 'a' : 'c'));

                c.v[0] = new char[1][1][1]; c.v[0][0][0][0] = 'd'; char val4 = get();

                assertEquals(val4, (isStableEnabled ? 'a' : 'd'));

                c.v[0][0] = new char[1][1]; c.v[0][0][0][0] = 'e'; char val5 = get();

                assertEquals(val5, (isStableEnabled ? 'a' : 'e'));

                c.v[0][0][0] = new char[1]; c.v[0][0][0][0] = 'f'; char val6 = get();

                assertEquals(val6, (isStableEnabled ? 'a' : 'f'));

            }

            {

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

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

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

            }

            {

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

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

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

            }

            {

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

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

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

            }

            {

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

                c.v = new char[1][1][1][1]; char[][][][] 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 char get() { return ((char[])c.v)[0]; }

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

        public static void test() throws Exception {

            {

                c.v = new char[1]; ((char[])c.v)[0] = 'a'; char val1 = get();

                                   ((char[])c.v)[0] = 'b'; char val2 = get();

                assertEquals(val1, 'a');

                assertEquals(val2, 'b');

            }

            {

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

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

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

            }

        }

    }

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

    static class ObjectArrayLowerDim1 {

        public @Stable Object[] v;

        public static final ObjectArrayLowerDim1 c = new ObjectArrayLowerDim1();

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

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

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

        public static void test() throws Exception {

            {

                c.v = new char[1][1]; ((char[][])c.v)[0][0] = 'a'; char val1 = get();

                                      ((char[][])c.v)[0][0] = 'b'; char val2 = get();

                assertEquals(val1, 'a');

                assertEquals(val2, 'b');

            }

            {

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

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

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

            }

            {

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

                c.v = new char[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 char get() { return ((char[][][])c.v)[0][0][0]; }

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

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

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

        public static void test() throws Exception {

            {

                c.v = new char[1][1][1]; ((char[][][])c.v)[0][0][0] = 'a';  char val1 = get();

                                         ((char[][][])c.v)[0][0][0] = 'b'; char val2 = get();

                assertEquals(val1, 'a');

                assertEquals(val2, 'b');

            }

            {

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

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

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

            }

            {

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

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

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

            }

            {

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

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

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

            }

        }

    }

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

    static class NestedStableField {

        static class A {

            public @Stable char a;

        }

        public @Stable A v;

        public static final NestedStableField c = new NestedStableField();

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

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

        public static void test() throws Exception {

            {

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

                               c.v.a = 'b'; A val2 = get();

                assertEquals(val1.a, 'b');

                assertEquals(val2.a, 'b');

            }

            {

                c.v = new A(); c.v.a = 'a'; char val1 = get1();

                               c.v.a = 'b'; char val2 = get1();

                c.v = new A(); c.v.a = 'c'; char val3 = get1();

                assertEquals(val1, 'a');

                assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

                assertEquals(val3, (isStableEnabled ? 'a' : 'c'));

            }

        }

    }

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

    static class NestedStableField1 {

        static class A {

            public @Stable char 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 char 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 = 'a'; c.v.next.a = 'a'; A val1 = get();

                               c.v.a = 'b'; c.v.next.a = 'b'; A val2 = get();

                assertEquals(val1.a, 'b');

                assertEquals(val2.a, 'b');

            }

            {

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

                               c.v.a = 'a'; char val1 = get1();

                               c.v.a = 'b'; char val2 = get1();

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

                               c.v.a = 'c'; char val3 = get1();

                assertEquals(val1, 'a');

                assertEquals(val2, (isStableEnabled ? 'a' : 'b'));

                assertEquals(val3, (isStableEnabled ? 'a' : 'c'));

            }

        }