--- /dev/null 2015-10-30 00:19:45.000000000 +0300 +++ new/test/compiler/jsr292/NonInlinedCall/RedefineTest.java 2015-10-30 00:19:45.000000000 +0300 @@ -0,0 +1,157 @@ +/* + * 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 8072008 + * @library /testlibrary /../../test/lib + * @build RedefineTest Agent + * @run main ClassFileInstaller sun.hotspot.WhiteBox + * sun.hotspot.WhiteBox$WhiteBoxPermission + * java.lang.invoke.RedefineTest + * Agent + * jdk.test.lib.Asserts + * @run main Agent agent.jar java.lang.invoke.RedefineTest + * @run main/othervm -Xbootclasspath/a:. -javaagent:agent.jar + * -XX:+IgnoreUnrecognizedVMOptions + * -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI + * -Xbatch -XX:-TieredCompilation -XX:CICompilerCount=1 + * java.lang.invoke.RedefineTest + */ +package java.lang.invoke; + +import sun.hotspot.WhiteBox; +import sun.misc.Unsafe; + +import jdk.internal.org.objectweb.asm.*; + +import java.lang.instrument.ClassDefinition; +import java.lang.instrument.Instrumentation; + +import static jdk.internal.org.objectweb.asm.Opcodes.*; + +public class RedefineTest { + static final MethodHandles.Lookup LOOKUP = MethodHandles.Lookup.IMPL_LOOKUP; + static final Unsafe UNSAFE = Unsafe.getUnsafe(); + + static final String NAME = "java/lang/invoke/RedefineTest$T"; + + static Class getClass(int r) { + byte[] classFile = getClassFile(r); + return UNSAFE.defineClass(NAME, classFile, 0, classFile.length, null, null); + } + + /** + * Generates a class of the following shape: + * static class T { + * @DontInline public static int f() { return $r; } + * } + */ + static byte[] getClassFile(int r) { + ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS); + MethodVisitor mv; + cw.visit(52, ACC_PUBLIC | ACC_SUPER, NAME, null, "java/lang/Object", null); + { + mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "f", "()I", null, null); + mv.visitAnnotation("Ljava/lang/invoke/DontInline;", true); + mv.visitCode(); + mv.visitLdcInsn(r); + mv.visitInsn(IRETURN); + mv.visitMaxs(0, 0); + mv.visitEnd(); + } + cw.visitEnd(); + return cw.toByteArray(); + } + + static final MethodHandle mh; + static final Class CLS = getClass(0); + static { + try { + mh = LOOKUP.findStatic(CLS, "f", MethodType.methodType(int.class)); + } catch (Exception e) { + throw new Error(e); + } + } + + static final WhiteBox WB = WhiteBox.getWhiteBox(); + + @DontInline + static int invokeBasic() { + try { + return (int)mh.invokeExact(); + } catch (Throwable e) { + throw new Error(e); + } + } + + static Instrumentation instr; + public static void premain(String args, Instrumentation instr) { + RedefineTest.instr = instr; + } + + + public static void main(String[] args) throws Exception { + for (int i = 0; i < 20_000; i++) { + int r = invokeBasic(); + if (r != 0) { + throw new Error(r + " != 0"); + } + } + // WB.ensureCompiled(); + + redefine(); + + int exp = (instr != null) ? 1 : 0; + + for (int i = 0; i < 20_000; i++) { + if (invokeBasic() != exp) { + throw new Error(); + } + } + + WB.clearInlineCaches(); + + for (int i = 0; i < 20_000; i++) { + if (invokeBasic() != exp) { + throw new Error(); + } + } + + // WB.ensureCompiled(); + } + + static void redefine() { + if (instr == null) { + System.out.println("NOT REDEFINED"); + return; + } + ClassDefinition cd = new ClassDefinition(CLS, getClassFile(1)); + try { + instr.redefineClasses(cd); + } catch (Exception e) { + throw new Error(e); + } + System.out.println("REDEFINED"); + } +}