/* * 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 * @bug 8138651 * @library /testlibrary /../../test/lib * @build IntrinsicDisabledTest * @run main ClassFileInstaller sun.hotspot.WhiteBox * sun.hotspot.WhiteBox$WhiteBoxPermission * @run main/othervm -Xbootclasspath/a:. * -XX:+UnlockDiagnosticVMOptions * -XX:+WhiteBoxAPI * -XX:DisableIntrinsic=_putCharVolatile,_putInt * -XX:DisableIntrinsic=_putIntVolatile * -XX:CompileCommand=option,sun.misc.Unsafe::putChar,ccstrlist,DisableIntrinsic,_getCharVolatile,_getInt * -XX:CompileCommand=option,sun.misc.Unsafe::putCharVolatile,ccstrlist,DisableIntrinsic,_getIntVolatile * IntrinsicDisabledTest */ import java.lang.reflect.Executable; import java.util.Objects; import sun.hotspot.WhiteBox; public class IntrinsicDisabledTest { private static final WhiteBox wb = WhiteBox.getWhiteBox(); /* Compilation level corresponding to C1. */ private static final int COMP_LEVEL_SIMPLE = 1; /* Compilation level corresponding to C2. */ private static final int COMP_LEVEL_FULL_OPTIMIZATION = 4; /* Determine if the VM the test is running on is a server or a * client VM. */ private static boolean isServerVM() { return System.getProperty("java.vm.name").toLowerCase().contains("server"); } /* Determine if tiered compilation is enabled. */ private static boolean isTieredCompilationEnabled() { return Boolean.valueOf(Objects.toString(wb.getVMFlag("TieredCompilation"))); } /* This test uses several methods from sun.misc.Unsafe. The method * getMethod() returns a different Executable for each different * combination of its input parameters. There are eight possible * combinations, getMethod can return an Executable representing * the following methods: putChar, putCharVolatile, getChar, * getCharVolatile, putInt, putIntVolatile, getInt, * getIntVolatile. These methods were selected because they can * be intrinsified by both the C1 and the C2 compiler. */ static Executable getMethod(boolean isChar, boolean isPut, boolean isVolatile) throws RuntimeException { Executable aMethod; String methodTypeName = isChar ? "Char" : "Int"; try { Class aClass = Class.forName("sun.misc.Unsafe"); if (isPut) { aMethod = aClass.getDeclaredMethod("put" + methodTypeName + (isVolatile ? "Volatile" : ""), Object.class, long.class, isChar ? char.class : int.class); } else { aMethod = aClass.getDeclaredMethod("get" + methodTypeName + (isVolatile ? "Volatile" : ""), Object.class, long.class); } } catch (NoSuchMethodException e) { throw new RuntimeException("Test bug, method is unavailable. " + e); } catch (ClassNotFoundException e) { throw new RuntimeException("Test bug, class is unavailable. " + e); } return aMethod; } public static void test(int compLevel) { Executable putChar = getMethod(true, /*isPut =*/ true, /*isVolatile = */ false); Executable getChar = getMethod(true, /*isPut =*/ false, /*isVolatile = */ false); Executable putCharVolatile = getMethod(true, /*isPut =*/ true, /*isVolatile = */ true); Executable getCharVolatile = getMethod(true, /*isPut =*/ false, /*isVolatile = */ true); Executable putInt = getMethod(false, /*isPut =*/ true, /*isVolatile = */ false); Executable getInt = getMethod(false, /*isPut =*/ false, /*isVolatile = */ false); Executable putIntVolatile = getMethod(false, /*isPut =*/ true, /*isVolatile = */ true); Executable getIntVolatile = getMethod(false, /*isPut =*/ false, /*isVolatile = */ true); /* Test if globally disabling intrinsics works. */ if (!wb.isIntrinsicAvailable(putChar, compLevel)) { throw new RuntimeException("Intrinsic for [" + putChar.toGenericString() + "] is not available globally although it should be."); } if (wb.isIntrinsicAvailable(putCharVolatile, compLevel)) { throw new RuntimeException("Intrinsic for [" + putCharVolatile.toGenericString() + "] is available globally although it should not be."); } if (wb.isIntrinsicAvailable(putInt, compLevel)) { throw new RuntimeException("Intrinsic for [" + putInt.toGenericString() + "] is available globally although it should not be."); } if (wb.isIntrinsicAvailable(putIntVolatile, compLevel)) { throw new RuntimeException("Intrinsic for [" + putIntVolatile.toGenericString() + "] is available globally although it should not be."); } /* Test if disabling intrinsics on a per-method level * works. The method for which intrinsics are * disabled (the compilation context) is putChar. */ if (!wb.isIntrinsicAvailable(getChar, putChar, compLevel)) { throw new RuntimeException("Intrinsic for [" + getChar.toGenericString() + "] is not available for intrinsification in [" + putChar.toGenericString() + "] although it should be."); } if (wb.isIntrinsicAvailable(getCharVolatile, putChar, compLevel)) { throw new RuntimeException("Intrinsic for [" + getCharVolatile.toGenericString() + "] is available for intrinsification in [" + putChar.toGenericString() + "] although it should not be."); } if (wb.isIntrinsicAvailable(getInt, putChar, compLevel)) { throw new RuntimeException("Intrinsic for [" + getInt.toGenericString() + "] is available for intrinsification in [" + putChar.toGenericString() + "] although it should not be."); } if (wb.isIntrinsicAvailable(getIntVolatile, putCharVolatile, compLevel)) { throw new RuntimeException("Intrinsic for [" + getIntVolatile.toGenericString() + "] is available for intrinsification in [" + putCharVolatile.toGenericString() + "] although it should not be."); } /* Test if disabling intrinsics on a per-method level * leaves those intrinsics enabled globally. */ if (!wb.isIntrinsicAvailable(getCharVolatile, compLevel)) { throw new RuntimeException("Intrinsic for [" + getCharVolatile.toGenericString() + "] is not available globally although it should be."); } if (!wb.isIntrinsicAvailable(getInt, compLevel)) { throw new RuntimeException("Intrinsic for [" + getInt.toGenericString() + "] is not available globally although it should be."); } if (!wb.isIntrinsicAvailable(getIntVolatile, compLevel)) { throw new RuntimeException("Intrinsic for [" + getIntVolatile.toGenericString() + "] is not available globally although it should be."); } /* Test if disabling an intrinsic globally disables it on a * per-method level as well. */ if (!wb.isIntrinsicAvailable(putChar, getChar, compLevel)) { throw new RuntimeException("Intrinsic for [" + putChar.toGenericString() + "] is not available for intrinsification in [" + getChar.toGenericString() + "] although it should be."); } if (wb.isIntrinsicAvailable(putCharVolatile, getChar, compLevel)) { throw new RuntimeException("Intrinsic for [" + putCharVolatile.toGenericString() + "] is available for intrinsification in [" + getChar.toGenericString() + "] although it should not be."); } if (wb.isIntrinsicAvailable(putInt, getChar, compLevel)) { throw new RuntimeException("Intrinsic for [" + putInt.toGenericString() + "] is available for intrinsification in [" + getChar.toGenericString() + "] although it should not be."); } if (wb.isIntrinsicAvailable(putIntVolatile, getChar, compLevel)) { throw new RuntimeException("Intrinsic for [" + putIntVolatile.toGenericString() + "] is available for intrinsification in [" + getChar.toGenericString() + "] although it should not be."); } } public static void main(String args[]) { if (isServerVM()) { if (isTieredCompilationEnabled()) { test(COMP_LEVEL_SIMPLE); } test(COMP_LEVEL_FULL_OPTIMIZATION); } else { test(COMP_LEVEL_SIMPLE); } } }