jdk/test/java/lang/invoke/VarHandles/VarHandleTestAccessBoolean.java - platform/libcore - Gitiles

 /*
  * 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.
  */

 /*
  * @test
  * @run testng/othervm -Diters=10    -Xint                   VarHandleTestAccessBoolean
  * @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 VarHandleTestAccessBoolean
  * @run testng/othervm -Diters=20000                         VarHandleTestAccessBoolean
  * @run testng/othervm -Diters=20000 -XX:-TieredCompilation  VarHandleTestAccessBoolean
  * @run testng/othervm -Diters=20000 -Djava.lang.invoke.VarHandle.VAR_HANDLE_GUARDS=false VarHandleTestAccessBoolean
  */

 import org.testng.annotations.BeforeClass;
 import org.testng.annotations.DataProvider;
 import org.testng.annotations.Test;

 import java.lang.invoke.MethodHandles;
 import java.lang.invoke.VarHandle;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;

 import static org.testng.Assert.*;

 public class VarHandleTestAccessBoolean extends VarHandleBaseTest {
     static final boolean static_final_v = true;

     static boolean static_v;

     final boolean final_v = true;

     boolean v;

     VarHandle vhFinalField;

     VarHandle vhField;

     VarHandle vhStaticField;

     VarHandle vhStaticFinalField;

     VarHandle vhArray;

     @BeforeClass
     public void setup() throws Exception {
         vhFinalField = MethodHandles.lookup().findVarHandle(
                 VarHandleTestAccessBoolean.class, "final_v", boolean.class);

         vhField = MethodHandles.lookup().findVarHandle(
                 VarHandleTestAccessBoolean.class, "v", boolean.class);

         vhStaticFinalField = MethodHandles.lookup().findStaticVarHandle(
             VarHandleTestAccessBoolean.class, "static_final_v", boolean.class);

         vhStaticField = MethodHandles.lookup().findStaticVarHandle(
             VarHandleTestAccessBoolean.class, "static_v", boolean.class);

         vhArray = MethodHandles.arrayElementVarHandle(boolean[].class);
     }


     @DataProvider
     public Object[][] varHandlesProvider() throws Exception {
         List<VarHandle> vhs = new ArrayList<>();
         vhs.add(vhField);
         vhs.add(vhStaticField);
         vhs.add(vhArray);

         return vhs.stream().map(tc -> new Object[]{tc}).toArray(Object[][]::new);
     }

     @Test(dataProvider = "varHandlesProvider")
     public void testIsAccessModeSupported(VarHandle vh) {
         assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.GET));
         assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.SET));
         assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.GET_VOLATILE));
         assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.SET_VOLATILE));
         assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.GET_ACQUIRE));
         assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.SET_RELEASE));
         assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.GET_OPAQUE));
         assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.SET_OPAQUE));

         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.COMPARE_AND_SET));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.COMPARE_AND_EXCHANGE_VOLATILE));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.COMPARE_AND_EXCHANGE_ACQUIRE));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.COMPARE_AND_EXCHANGE_RELEASE));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.WEAK_COMPARE_AND_SET));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.WEAK_COMPARE_AND_SET_VOLATILE));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.WEAK_COMPARE_AND_SET_ACQUIRE));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.WEAK_COMPARE_AND_SET_RELEASE));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.GET_AND_SET));

         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.GET_AND_ADD));
         assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.ADD_AND_GET));
     }


     @DataProvider
     public Object[][] typesProvider() throws Exception {
         List<Object[]> types = new ArrayList<>();
         types.add(new Object[] {vhField, Arrays.asList(VarHandleTestAccessBoolean.class)});
         types.add(new Object[] {vhStaticField, Arrays.asList()});
         types.add(new Object[] {vhArray, Arrays.asList(boolean[].class, int.class)});

         return types.stream().toArray(Object[][]::new);
     }

     @Test(dataProvider = "typesProvider")
     public void testTypes(VarHandle vh, List<Class<?>> pts) {
         assertEquals(vh.varType(), boolean.class);

         assertEquals(vh.coordinateTypes(), pts);

         testTypes(vh);
     }


     @Test
     public void testLookupInstanceToStatic() {
         checkIAE("Lookup of static final field to instance final field", () -> {
             MethodHandles.lookup().findStaticVarHandle(
                     VarHandleTestAccessBoolean.class, "final_v", boolean.class);
         });

         checkIAE("Lookup of static field to instance field", () -> {
             MethodHandles.lookup().findStaticVarHandle(
                     VarHandleTestAccessBoolean.class, "v", boolean.class);
         });
     }

     @Test
     public void testLookupStaticToInstance() {
         checkIAE("Lookup of instance final field to static final field", () -> {
             MethodHandles.lookup().findVarHandle(
                 VarHandleTestAccessBoolean.class, "static_final_v", boolean.class);
         });

         checkIAE("Lookup of instance field to static field", () -> {
             vhStaticField = MethodHandles.lookup().findVarHandle(
                 VarHandleTestAccessBoolean.class, "static_v", boolean.class);
         });
     }


     @DataProvider
     public Object[][] accessTestCaseProvider() throws Exception {
         List<AccessTestCase<?>> cases = new ArrayList<>();

         cases.add(new VarHandleAccessTestCase("Instance final field",
                                               vhFinalField, vh -> testInstanceFinalField(this, vh)));
         cases.add(new VarHandleAccessTestCase("Instance final field unsupported",
                                               vhFinalField, vh -> testInstanceFinalFieldUnsupported(this, vh),
                                               false));

         cases.add(new VarHandleAccessTestCase("Static final field",
                                               vhStaticFinalField, VarHandleTestAccessBoolean::testStaticFinalField));
         cases.add(new VarHandleAccessTestCase("Static final field unsupported",
                                               vhStaticFinalField, VarHandleTestAccessBoolean::testStaticFinalFieldUnsupported,
                                               false));

         cases.add(new VarHandleAccessTestCase("Instance field",
                                               vhField, vh -> testInstanceField(this, vh)));
         cases.add(new VarHandleAccessTestCase("Instance field unsupported",
                                               vhField, vh -> testInstanceFieldUnsupported(this, vh),
                                               false));

         cases.add(new VarHandleAccessTestCase("Static field",
                                               vhStaticField, VarHandleTestAccessBoolean::testStaticField));
         cases.add(new VarHandleAccessTestCase("Static field unsupported",
                                               vhStaticField, VarHandleTestAccessBoolean::testStaticFieldUnsupported,
                                               false));

         cases.add(new VarHandleAccessTestCase("Array",
                                               vhArray, VarHandleTestAccessBoolean::testArray));
         cases.add(new VarHandleAccessTestCase("Array unsupported",
                                               vhArray, VarHandleTestAccessBoolean::testArrayUnsupported,
                                               false));
         cases.add(new VarHandleAccessTestCase("Array index out of bounds",
                                               vhArray, VarHandleTestAccessBoolean::testArrayIndexOutOfBounds,
                                               false));

         // Work around issue with jtreg summary reporting which truncates
         // the String result of Object.toString to 30 characters, hence
         // the first dummy argument
         return cases.stream().map(tc -> new Object[]{tc.toString(), tc}).toArray(Object[][]::new);
     }

     @Test(dataProvider = "accessTestCaseProvider")
     public <T> void testAccess(String desc, AccessTestCase<T> atc) throws Throwable {
         T t = atc.get();
         int iters = atc.requiresLoop() ? ITERS : 1;
         for (int c = 0; c < iters; c++) {
             atc.testAccess(t);
         }
     }


     static void testInstanceFinalField(VarHandleTestAccessBoolean recv, VarHandle vh) {
         // Plain
         {
             boolean x = (boolean) vh.get(recv);
             assertEquals(x, true, "get boolean value");
         }


         // Volatile
         {
             boolean x = (boolean) vh.getVolatile(recv);
             assertEquals(x, true, "getVolatile boolean value");
         }

         // Lazy
         {
             boolean x = (boolean) vh.getAcquire(recv);
             assertEquals(x, true, "getRelease boolean value");
         }

         // Opaque
         {
             boolean x = (boolean) vh.getOpaque(recv);
             assertEquals(x, true, "getOpaque boolean value");
         }
     }

     static void testInstanceFinalFieldUnsupported(VarHandleTestAccessBoolean recv, VarHandle vh) {
         checkUOE(() -> {
             vh.set(recv, false);
         });

         checkUOE(() -> {
             vh.setVolatile(recv, false);
         });

         checkUOE(() -> {
             vh.setRelease(recv, false);
         });

         checkUOE(() -> {
             vh.setOpaque(recv, false);
         });

         checkUOE(() -> {
             boolean r = vh.compareAndSet(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeVolatile(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeAcquire(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeRelease(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSet(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetVolatile(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetAcquire(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetRelease(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.getAndSet(recv, true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.getAndAdd(recv, true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.addAndGet(recv, true);
         });
     }


     static void testStaticFinalField(VarHandle vh) {
         // Plain
         {
             boolean x = (boolean) vh.get();
             assertEquals(x, true, "get boolean value");
         }


         // Volatile
         {
             boolean x = (boolean) vh.getVolatile();
             assertEquals(x, true, "getVolatile boolean value");
         }

         // Lazy
         {
             boolean x = (boolean) vh.getAcquire();
             assertEquals(x, true, "getRelease boolean value");
         }

         // Opaque
         {
             boolean x = (boolean) vh.getOpaque();
             assertEquals(x, true, "getOpaque boolean value");
         }
     }

     static void testStaticFinalFieldUnsupported(VarHandle vh) {
         checkUOE(() -> {
             vh.set(false);
         });

         checkUOE(() -> {
             vh.setVolatile(false);
         });

         checkUOE(() -> {
             vh.setRelease(false);
         });

         checkUOE(() -> {
             vh.setOpaque(false);
         });

         checkUOE(() -> {
             boolean r = vh.compareAndSet(true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeVolatile(true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeAcquire(true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeRelease(true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSet(true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetVolatile(true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetAcquire(true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetRelease(true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.getAndSet(true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.getAndAdd(true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.addAndGet(true);
         });
     }


     static void testInstanceField(VarHandleTestAccessBoolean recv, VarHandle vh) {
         // Plain
         {
             vh.set(recv, true);
             boolean x = (boolean) vh.get(recv);
             assertEquals(x, true, "set boolean value");
         }


         // Volatile
         {
             vh.setVolatile(recv, false);
             boolean x = (boolean) vh.getVolatile(recv);
             assertEquals(x, false, "setVolatile boolean value");
         }

         // Lazy
         {
             vh.setRelease(recv, true);
             boolean x = (boolean) vh.getAcquire(recv);
             assertEquals(x, true, "setRelease boolean value");
         }

         // Opaque
         {
             vh.setOpaque(recv, false);
             boolean x = (boolean) vh.getOpaque(recv);
             assertEquals(x, false, "setOpaque boolean value");
         }


     }

     static void testInstanceFieldUnsupported(VarHandleTestAccessBoolean recv, VarHandle vh) {
         checkUOE(() -> {
             boolean r = vh.compareAndSet(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeVolatile(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeAcquire(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeRelease(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSet(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetVolatile(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetAcquire(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetRelease(recv, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.getAndSet(recv, true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.getAndAdd(recv, true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.addAndGet(recv, true);
         });
     }


     static void testStaticField(VarHandle vh) {
         // Plain
         {
             vh.set(true);
             boolean x = (boolean) vh.get();
             assertEquals(x, true, "set boolean value");
         }


         // Volatile
         {
             vh.setVolatile(false);
             boolean x = (boolean) vh.getVolatile();
             assertEquals(x, false, "setVolatile boolean value");
         }

         // Lazy
         {
             vh.setRelease(true);
             boolean x = (boolean) vh.getAcquire();
             assertEquals(x, true, "setRelease boolean value");
         }

         // Opaque
         {
             vh.setOpaque(false);
             boolean x = (boolean) vh.getOpaque();
             assertEquals(x, false, "setOpaque boolean value");
         }


     }

     static void testStaticFieldUnsupported(VarHandle vh) {
         checkUOE(() -> {
             boolean r = vh.compareAndSet(true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeVolatile(true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeAcquire(true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeRelease(true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSet(true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetVolatile(true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetAcquire(true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetRelease(true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.getAndSet(true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.getAndAdd(true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.addAndGet(true);
         });
     }


     static void testArray(VarHandle vh) {
         boolean[] array = new boolean[10];

         for (int i = 0; i < array.length; i++) {
             // Plain
             {
                 vh.set(array, i, true);
                 boolean x = (boolean) vh.get(array, i);
                 assertEquals(x, true, "get boolean value");
             }


             // Volatile
             {
                 vh.setVolatile(array, i, false);
                 boolean x = (boolean) vh.getVolatile(array, i);
                 assertEquals(x, false, "setVolatile boolean value");
             }

             // Lazy
             {
                 vh.setRelease(array, i, true);
                 boolean x = (boolean) vh.getAcquire(array, i);
                 assertEquals(x, true, "setRelease boolean value");
             }

             // Opaque
             {
                 vh.setOpaque(array, i, false);
                 boolean x = (boolean) vh.getOpaque(array, i);
                 assertEquals(x, false, "setOpaque boolean value");
             }


         }
     }

     static void testArrayUnsupported(VarHandle vh) {
         boolean[] array = new boolean[10];

         int i = 0;
         checkUOE(() -> {
             boolean r = vh.compareAndSet(array, i, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeVolatile(array, i, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeAcquire(array, i, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.compareAndExchangeRelease(array, i, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSet(array, i, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetVolatile(array, i, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetAcquire(array, i, true, false);
         });

         checkUOE(() -> {
             boolean r = vh.weakCompareAndSetRelease(array, i, true, false);
         });

         checkUOE(() -> {
             boolean r = (boolean) vh.getAndSet(array, i, true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.getAndAdd(array, i, true);
         });

         checkUOE(() -> {
             boolean o = (boolean) vh.addAndGet(array, i, true);
         });
     }

     static void testArrayIndexOutOfBounds(VarHandle vh) throws Throwable {
         boolean[] array = new boolean[10];

         for (int i : new int[]{-1, Integer.MIN_VALUE, 10, 11, Integer.MAX_VALUE}) {
             final int ci = i;

             checkIOOBE(() -> {
                 boolean x = (boolean) vh.get(array, ci);
             });

             checkIOOBE(() -> {
                 vh.set(array, ci, true);
             });

             checkIOOBE(() -> {
                 boolean x = (boolean) vh.getVolatile(array, ci);
             });

             checkIOOBE(() -> {
                 vh.setVolatile(array, ci, true);
             });

             checkIOOBE(() -> {
                 boolean x = (boolean) vh.getAcquire(array, ci);
             });

             checkIOOBE(() -> {
                 vh.setRelease(array, ci, true);
             });

             checkIOOBE(() -> {
                 boolean x = (boolean) vh.getOpaque(array, ci);
             });

             checkIOOBE(() -> {
                 vh.setOpaque(array, ci, true);
             });


         }
     }
 }
	/*
	* 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.
	*/

	/*
	* @test
	* @run testng/othervm -Diters=10 -Xint VarHandleTestAccessBoolean
	* @run testng/othervm -Diters=20000 -XX:TieredStopAtLevel=1 VarHandleTestAccessBoolean
	* @run testng/othervm -Diters=20000 VarHandleTestAccessBoolean
	* @run testng/othervm -Diters=20000 -XX:-TieredCompilation VarHandleTestAccessBoolean
	* @run testng/othervm -Diters=20000 -Djava.lang.invoke.VarHandle.VAR_HANDLE_GUARDS=false VarHandleTestAccessBoolean
	*/

	import org.testng.annotations.BeforeClass;
	import org.testng.annotations.DataProvider;
	import org.testng.annotations.Test;

	import java.lang.invoke.MethodHandles;
	import java.lang.invoke.VarHandle;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;

	import static org.testng.Assert.*;

	public class VarHandleTestAccessBoolean extends VarHandleBaseTest {
	static final boolean static_final_v = true;

	static boolean static_v;

	final boolean final_v = true;

	boolean v;

	VarHandle vhFinalField;

	VarHandle vhField;

	VarHandle vhStaticField;

	VarHandle vhStaticFinalField;

	VarHandle vhArray;

	@BeforeClass
	public void setup() throws Exception {
	vhFinalField = MethodHandles.lookup().findVarHandle(
	VarHandleTestAccessBoolean.class, "final_v", boolean.class);

	vhField = MethodHandles.lookup().findVarHandle(
	VarHandleTestAccessBoolean.class, "v", boolean.class);

	vhStaticFinalField = MethodHandles.lookup().findStaticVarHandle(
	VarHandleTestAccessBoolean.class, "static_final_v", boolean.class);

	vhStaticField = MethodHandles.lookup().findStaticVarHandle(
	VarHandleTestAccessBoolean.class, "static_v", boolean.class);

	vhArray = MethodHandles.arrayElementVarHandle(boolean[].class);
	}


	@DataProvider
	public Object[][] varHandlesProvider() throws Exception {
	List<VarHandle> vhs = new ArrayList<>();
	vhs.add(vhField);
	vhs.add(vhStaticField);
	vhs.add(vhArray);

	return vhs.stream().map(tc -> new Object[]{tc}).toArray(Object[][]::new);
	}

	@Test(dataProvider = "varHandlesProvider")
	public void testIsAccessModeSupported(VarHandle vh) {
	assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.GET));
	assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.SET));
	assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.GET_VOLATILE));
	assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.SET_VOLATILE));
	assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.GET_ACQUIRE));
	assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.SET_RELEASE));
	assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.GET_OPAQUE));
	assertTrue(vh.isAccessModeSupported(VarHandle.AccessMode.SET_OPAQUE));

	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.COMPARE_AND_SET));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.COMPARE_AND_EXCHANGE_VOLATILE));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.COMPARE_AND_EXCHANGE_ACQUIRE));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.COMPARE_AND_EXCHANGE_RELEASE));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.WEAK_COMPARE_AND_SET));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.WEAK_COMPARE_AND_SET_VOLATILE));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.WEAK_COMPARE_AND_SET_ACQUIRE));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.WEAK_COMPARE_AND_SET_RELEASE));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.GET_AND_SET));

	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.GET_AND_ADD));
	assertFalse(vh.isAccessModeSupported(VarHandle.AccessMode.ADD_AND_GET));
	}


	@DataProvider
	public Object[][] typesProvider() throws Exception {
	List<Object[]> types = new ArrayList<>();
	types.add(new Object[] {vhField, Arrays.asList(VarHandleTestAccessBoolean.class)});
	types.add(new Object[] {vhStaticField, Arrays.asList()});
	types.add(new Object[] {vhArray, Arrays.asList(boolean[].class, int.class)});

	return types.stream().toArray(Object[][]::new);
	}

	@Test(dataProvider = "typesProvider")
	public void testTypes(VarHandle vh, List<Class<?>> pts) {
	assertEquals(vh.varType(), boolean.class);

	assertEquals(vh.coordinateTypes(), pts);

	testTypes(vh);
	}


	@Test
	public void testLookupInstanceToStatic() {
	checkIAE("Lookup of static final field to instance final field", () -> {
	MethodHandles.lookup().findStaticVarHandle(
	VarHandleTestAccessBoolean.class, "final_v", boolean.class);
	});

	checkIAE("Lookup of static field to instance field", () -> {
	MethodHandles.lookup().findStaticVarHandle(
	VarHandleTestAccessBoolean.class, "v", boolean.class);
	});
	}

	@Test
	public void testLookupStaticToInstance() {
	checkIAE("Lookup of instance final field to static final field", () -> {
	MethodHandles.lookup().findVarHandle(
	VarHandleTestAccessBoolean.class, "static_final_v", boolean.class);
	});

	checkIAE("Lookup of instance field to static field", () -> {
	vhStaticField = MethodHandles.lookup().findVarHandle(
	VarHandleTestAccessBoolean.class, "static_v", boolean.class);
	});
	}


	@DataProvider
	public Object[][] accessTestCaseProvider() throws Exception {
	List<AccessTestCase<?>> cases = new ArrayList<>();

	cases.add(new VarHandleAccessTestCase("Instance final field",
	vhFinalField, vh -> testInstanceFinalField(this, vh)));
	cases.add(new VarHandleAccessTestCase("Instance final field unsupported",
	vhFinalField, vh -> testInstanceFinalFieldUnsupported(this, vh),
	false));

	cases.add(new VarHandleAccessTestCase("Static final field",
	vhStaticFinalField, VarHandleTestAccessBoolean::testStaticFinalField));
	cases.add(new VarHandleAccessTestCase("Static final field unsupported",
	vhStaticFinalField, VarHandleTestAccessBoolean::testStaticFinalFieldUnsupported,
	false));

	cases.add(new VarHandleAccessTestCase("Instance field",
	vhField, vh -> testInstanceField(this, vh)));
	cases.add(new VarHandleAccessTestCase("Instance field unsupported",
	vhField, vh -> testInstanceFieldUnsupported(this, vh),
	false));

	cases.add(new VarHandleAccessTestCase("Static field",
	vhStaticField, VarHandleTestAccessBoolean::testStaticField));
	cases.add(new VarHandleAccessTestCase("Static field unsupported",
	vhStaticField, VarHandleTestAccessBoolean::testStaticFieldUnsupported,
	false));

	cases.add(new VarHandleAccessTestCase("Array",
	vhArray, VarHandleTestAccessBoolean::testArray));
	cases.add(new VarHandleAccessTestCase("Array unsupported",
	vhArray, VarHandleTestAccessBoolean::testArrayUnsupported,
	false));
	cases.add(new VarHandleAccessTestCase("Array index out of bounds",
	vhArray, VarHandleTestAccessBoolean::testArrayIndexOutOfBounds,
	false));

	// Work around issue with jtreg summary reporting which truncates
	// the String result of Object.toString to 30 characters, hence
	// the first dummy argument
	return cases.stream().map(tc -> new Object[]{tc.toString(), tc}).toArray(Object[][]::new);
	}

	@Test(dataProvider = "accessTestCaseProvider")
	public <T> void testAccess(String desc, AccessTestCase<T> atc) throws Throwable {
	T t = atc.get();
	int iters = atc.requiresLoop() ? ITERS : 1;
	for (int c = 0; c < iters; c++) {
	atc.testAccess(t);
	}
	}




	static void testInstanceFinalField(VarHandleTestAccessBoolean recv, VarHandle vh) {
	// Plain
	{
	boolean x = (boolean) vh.get(recv);
	assertEquals(x, true, "get boolean value");
	}


	// Volatile
	{
	boolean x = (boolean) vh.getVolatile(recv);
	assertEquals(x, true, "getVolatile boolean value");
	}

	// Lazy
	{
	boolean x = (boolean) vh.getAcquire(recv);
	assertEquals(x, true, "getRelease boolean value");
	}

	// Opaque
	{
	boolean x = (boolean) vh.getOpaque(recv);
	assertEquals(x, true, "getOpaque boolean value");
	}
	}

	static void testInstanceFinalFieldUnsupported(VarHandleTestAccessBoolean recv, VarHandle vh) {
	checkUOE(() -> {
	vh.set(recv, false);
	});

	checkUOE(() -> {
	vh.setVolatile(recv, false);
	});

	checkUOE(() -> {
	vh.setRelease(recv, false);
	});

	checkUOE(() -> {
	vh.setOpaque(recv, false);
	});

	checkUOE(() -> {
	boolean r = vh.compareAndSet(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeVolatile(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeAcquire(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeRelease(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSet(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetVolatile(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetAcquire(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetRelease(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.getAndSet(recv, true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.getAndAdd(recv, true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.addAndGet(recv, true);
	});
	}


	static void testStaticFinalField(VarHandle vh) {
	// Plain
	{
	boolean x = (boolean) vh.get();
	assertEquals(x, true, "get boolean value");
	}


	// Volatile
	{
	boolean x = (boolean) vh.getVolatile();
	assertEquals(x, true, "getVolatile boolean value");
	}

	// Lazy
	{
	boolean x = (boolean) vh.getAcquire();
	assertEquals(x, true, "getRelease boolean value");
	}

	// Opaque
	{
	boolean x = (boolean) vh.getOpaque();
	assertEquals(x, true, "getOpaque boolean value");
	}
	}

	static void testStaticFinalFieldUnsupported(VarHandle vh) {
	checkUOE(() -> {
	vh.set(false);
	});

	checkUOE(() -> {
	vh.setVolatile(false);
	});

	checkUOE(() -> {
	vh.setRelease(false);
	});

	checkUOE(() -> {
	vh.setOpaque(false);
	});

	checkUOE(() -> {
	boolean r = vh.compareAndSet(true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeVolatile(true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeAcquire(true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeRelease(true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSet(true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetVolatile(true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetAcquire(true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetRelease(true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.getAndSet(true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.getAndAdd(true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.addAndGet(true);
	});
	}


	static void testInstanceField(VarHandleTestAccessBoolean recv, VarHandle vh) {
	// Plain
	{
	vh.set(recv, true);
	boolean x = (boolean) vh.get(recv);
	assertEquals(x, true, "set boolean value");
	}


	// Volatile
	{
	vh.setVolatile(recv, false);
	boolean x = (boolean) vh.getVolatile(recv);
	assertEquals(x, false, "setVolatile boolean value");
	}

	// Lazy
	{
	vh.setRelease(recv, true);
	boolean x = (boolean) vh.getAcquire(recv);
	assertEquals(x, true, "setRelease boolean value");
	}

	// Opaque
	{
	vh.setOpaque(recv, false);
	boolean x = (boolean) vh.getOpaque(recv);
	assertEquals(x, false, "setOpaque boolean value");
	}


	}

	static void testInstanceFieldUnsupported(VarHandleTestAccessBoolean recv, VarHandle vh) {
	checkUOE(() -> {
	boolean r = vh.compareAndSet(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeVolatile(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeAcquire(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeRelease(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSet(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetVolatile(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetAcquire(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetRelease(recv, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.getAndSet(recv, true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.getAndAdd(recv, true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.addAndGet(recv, true);
	});
	}


	static void testStaticField(VarHandle vh) {
	// Plain
	{
	vh.set(true);
	boolean x = (boolean) vh.get();
	assertEquals(x, true, "set boolean value");
	}


	// Volatile
	{
	vh.setVolatile(false);
	boolean x = (boolean) vh.getVolatile();
	assertEquals(x, false, "setVolatile boolean value");
	}

	// Lazy
	{
	vh.setRelease(true);
	boolean x = (boolean) vh.getAcquire();
	assertEquals(x, true, "setRelease boolean value");
	}

	// Opaque
	{
	vh.setOpaque(false);
	boolean x = (boolean) vh.getOpaque();
	assertEquals(x, false, "setOpaque boolean value");
	}


	}

	static void testStaticFieldUnsupported(VarHandle vh) {
	checkUOE(() -> {
	boolean r = vh.compareAndSet(true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeVolatile(true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeAcquire(true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeRelease(true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSet(true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetVolatile(true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetAcquire(true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetRelease(true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.getAndSet(true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.getAndAdd(true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.addAndGet(true);
	});
	}


	static void testArray(VarHandle vh) {
	boolean[] array = new boolean[10];

	for (int i = 0; i < array.length; i++) {
	// Plain
	{
	vh.set(array, i, true);
	boolean x = (boolean) vh.get(array, i);
	assertEquals(x, true, "get boolean value");
	}


	// Volatile
	{
	vh.setVolatile(array, i, false);
	boolean x = (boolean) vh.getVolatile(array, i);
	assertEquals(x, false, "setVolatile boolean value");
	}

	// Lazy
	{
	vh.setRelease(array, i, true);
	boolean x = (boolean) vh.getAcquire(array, i);
	assertEquals(x, true, "setRelease boolean value");
	}

	// Opaque
	{
	vh.setOpaque(array, i, false);
	boolean x = (boolean) vh.getOpaque(array, i);
	assertEquals(x, false, "setOpaque boolean value");
	}


	}
	}

	static void testArrayUnsupported(VarHandle vh) {
	boolean[] array = new boolean[10];

	int i = 0;
	checkUOE(() -> {
	boolean r = vh.compareAndSet(array, i, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeVolatile(array, i, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeAcquire(array, i, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.compareAndExchangeRelease(array, i, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSet(array, i, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetVolatile(array, i, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetAcquire(array, i, true, false);
	});

	checkUOE(() -> {
	boolean r = vh.weakCompareAndSetRelease(array, i, true, false);
	});

	checkUOE(() -> {
	boolean r = (boolean) vh.getAndSet(array, i, true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.getAndAdd(array, i, true);
	});

	checkUOE(() -> {
	boolean o = (boolean) vh.addAndGet(array, i, true);
	});
	}

	static void testArrayIndexOutOfBounds(VarHandle vh) throws Throwable {
	boolean[] array = new boolean[10];

	for (int i : new int[]{-1, Integer.MIN_VALUE, 10, 11, Integer.MAX_VALUE}) {
	final int ci = i;

	checkIOOBE(() -> {
	boolean x = (boolean) vh.get(array, ci);
	});

	checkIOOBE(() -> {
	vh.set(array, ci, true);
	});

	checkIOOBE(() -> {
	boolean x = (boolean) vh.getVolatile(array, ci);
	});

	checkIOOBE(() -> {
	vh.setVolatile(array, ci, true);
	});

	checkIOOBE(() -> {
	boolean x = (boolean) vh.getAcquire(array, ci);
	});

	checkIOOBE(() -> {
	vh.setRelease(array, ci, true);
	});

	checkIOOBE(() -> {
	boolean x = (boolean) vh.getOpaque(array, ci);
	});

	checkIOOBE(() -> {
	vh.setOpaque(array, ci, true);
	});


	}
	}
	}