--- old/test/hotspot/jtreg/runtime/appcds/jvmti/InstrumentationClassFileTransformer.java 2019-07-24 08:27:50.017468278 -0400 +++ /dev/null 2019-07-22 09:37:15.068007775 -0400 @@ -1,57 +0,0 @@ -/* - * Copyright (c) 2014, 2017, 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. - * - */ - -import java.lang.instrument.ClassFileTransformer; -import java.lang.instrument.IllegalClassFormatException; -import java.security.ProtectionDomain; - -// Note: Util is from /test/hotspot/jtreg/runtime/appcds/test-classes/TestCommon.java - -public class InstrumentationClassFileTransformer implements ClassFileTransformer { - public byte[] transform(ClassLoader loader, String name, Class classBeingRedefined, - ProtectionDomain pd, byte[] buffer) throws IllegalClassFormatException { - - if (name.startsWith("InstrumentationApp$") && !name.equals("InstrumentationApp$NotTransformed")) { - System.out.println("Transforming: " + name + " class = " + classBeingRedefined); - try { - if (classBeingRedefined == null) { - // Initial transform - replace(buffer, "buzz", "fuzz"); - } else { - replace(buffer, "buzz", "guzz"); // Retransform - replace(buffer, "huzz", "quzz"); // Redefine - } - } catch (Throwable t) { - t.printStackTrace(); - } - return buffer; - } - return null; - } - - static void replace(byte[] buffer, String from, String to) { - int n = Util.replace(buffer, from, to); - System.out.println("..... replaced " + n + " occurrence(s) of '" + from + "' to '" + to + "'"); - } -} --- /dev/null 2019-07-22 09:37:15.068007775 -0400 +++ new/test/hotspot/jtreg/runtime/cds/jvmti/InstrumentationClassFileTransformer.java 2019-07-24 08:27:49.693468289 -0400 @@ -0,0 +1,57 @@ +/* + * Copyright (c) 2014, 2017, 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. + * + */ + +import java.lang.instrument.ClassFileTransformer; +import java.lang.instrument.IllegalClassFormatException; +import java.security.ProtectionDomain; + +// Note: Util is from /test/hotspot/jtreg/runtime/cds/test-classes/TestCommon.java + +public class InstrumentationClassFileTransformer implements ClassFileTransformer { + public byte[] transform(ClassLoader loader, String name, Class classBeingRedefined, + ProtectionDomain pd, byte[] buffer) throws IllegalClassFormatException { + + if (name.startsWith("InstrumentationApp$") && !name.equals("InstrumentationApp$NotTransformed")) { + System.out.println("Transforming: " + name + " class = " + classBeingRedefined); + try { + if (classBeingRedefined == null) { + // Initial transform + replace(buffer, "buzz", "fuzz"); + } else { + replace(buffer, "buzz", "guzz"); // Retransform + replace(buffer, "huzz", "quzz"); // Redefine + } + } catch (Throwable t) { + t.printStackTrace(); + } + return buffer; + } + return null; + } + + static void replace(byte[] buffer, String from, String to) { + int n = Util.replace(buffer, from, to); + System.out.println("..... replaced " + n + " occurrence(s) of '" + from + "' to '" + to + "'"); + } +}