1 /*
   2  * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 8137167
  27  * @summary Tests jcmd to be able to clear directives added via options
  28  * @modules java.base/jdk.internal.misc
  29  * @library /test/lib /
  30  *
  31  * @build sun.hotspot.WhiteBox
  32  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
  33  *                                sun.hotspot.WhiteBox$WhiteBoxPermission
  34  *
  35  * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions
  36  *                   -XX:+WhiteBoxAPI
  37  *                   compiler.compilercontrol.jcmd.ClearDirectivesFileStackTest
  38  */
  39 
  40 package compiler.compilercontrol.jcmd;
  41 
  42 import compiler.compilercontrol.share.AbstractTestBase;
  43 import compiler.compilercontrol.share.method.MethodDescriptor;
  44 import compiler.compilercontrol.share.scenario.Command;
  45 import compiler.compilercontrol.share.scenario.CommandGenerator;
  46 import compiler.compilercontrol.share.scenario.CompileCommand;
  47 import compiler.compilercontrol.share.scenario.JcmdCommand;
  48 import compiler.compilercontrol.share.scenario.Scenario;
  49 import jdk.test.lib.Utils;
  50 import sun.hotspot.WhiteBox;
  51 
  52 import java.lang.reflect.Executable;
  53 
  54 public class ClearDirectivesFileStackTest extends AbstractTestBase {
  55     private static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
  56     private static final int LIMIT = WHITE_BOX.getIntVMFlag("CompilerDirectivesLimit").intValue();
  57     private static final int AMOUNT = Utils.getRandomInstance().nextInt(LIMIT);
  58     private final CommandGenerator cmdGen = new CommandGenerator();
  59 
  60     public static void main(String[] args) {
  61         new ClearDirectivesFileStackTest().test();
  62     }
  63 
  64     @Override
  65     public void test() {
  66         Scenario.Builder builder = Scenario.getBuilder();
  67         // Add some commands with directives file
  68         for (int i = 0; i < AMOUNT; i++) {
  69             Executable exec = Utils.getRandomElement(METHODS).first;
  70             MethodDescriptor methodDescriptor = getValidMethodDescriptor(exec);
  71             Command command = cmdGen.generateCommand();
  72             if (command == Command.NONEXISTENT) {
  73                 // skip invalid command
  74                 command = Command.COMPILEONLY;
  75             }
  76             CompileCommand compileCommand = new CompileCommand(command,
  77                     methodDescriptor, cmdGen.generateCompiler(),
  78                     Scenario.Type.DIRECTIVE);
  79             compileCommand.print();
  80             builder.add(compileCommand);
  81         }
  82         // clear the stack
  83         builder.add(new JcmdCommand(Command.NONEXISTENT, null, null,
  84                 Scenario.Type.JCMD, Scenario.JcmdType.CLEAR));
  85         // print all directives after the clear
  86         builder.add(new JcmdCommand(Command.NONEXISTENT, null, null,
  87                 Scenario.Type.JCMD, Scenario.JcmdType.PRINT));
  88         Scenario scenario = builder.build();
  89         scenario.execute();
  90     }
  91 }