jdk8-mips64-public/hotspot: test/testlibrary_tests/whitebox/vm_flags/VmFlagTest.java@0c48231c5c84 (annotated)

test/testlibrary_tests/whitebox/vm_flags/VmFlagTest.java@0c48231c5c84 (annotated)

test/testlibrary_tests/whitebox/vm_flags/VmFlagTest.java

Fri, 30 May 2014 17:20:48 +0400

author: iignatyev
date: Fri, 30 May 2014 17:20:48 +0400
changeset 6963: 0c48231c5c84
child 8441: cf1faa9100dd
permissions: -rw-r--r--

8038756: new WB API :: get/setVMFlag
Reviewed-by: vlivanov, sla

 /*
  * Copyright (c) 2014, 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.util.Objects;
 import java.util.function.BiConsumer;
 import java.util.function.Function;
 import sun.hotspot.WhiteBox;
 import sun.management.*;
 import com.sun.management.*;
 import com.oracle.java.testlibrary.*;
 public final class VmFlagTest<T> {
     public static final WhiteBox WHITE_BOX = WhiteBox.getWhiteBox();
     private static final String NONEXISTENT_FLAG = "NonexistentFlag";
     private final String flagName;
     private final BiConsumer<T, T> test;
     private final BiConsumer<String, T> set;
     private final Function<String, T> get;
     protected VmFlagTest(String flagName, BiConsumer<String, T> set,
             Function<String, T> get, boolean isPositive) {
         this.flagName = flagName;
         this.set = set;
         this.get = get;
         if (isPositive) {
             test = this::testPositive;
         } else {
             test = this::testNegative;
         }
     }
     private void setNewValue(T value) {
         set.accept(flagName, value);
     }
     private T getValue() {
         T t = get.apply(flagName);
         System.out.println("T = " + t);
         return t;
     }
     protected static <T> void runTest(String existentFlag, T[] tests,
             BiConsumer<String, T> set, Function<String, T> get) {
         runTest(existentFlag, tests, tests, set, get);
     }
     protected static <T> void runTest(String existentFlag, T[] tests,
             T[] results, BiConsumer<String, T> set, Function<String, T> get) {
         if (existentFlag != null) {
             new VmFlagTest(existentFlag, set, get, true).test(tests, results);
         }
         new VmFlagTest(NONEXISTENT_FLAG, set, get, false).test(tests, results);
     }
     public final void test(T[] tests, T[] results) {
         Asserts.assertEQ(tests.length, results.length, "[TESTBUG] tests.length != results.length");
         for (int i = 0, n = tests.length ; i < n; ++i) {
             test.accept(tests[i], results[i]);
         }
     }
     protected String getVMOptionAsString() {
         HotSpotDiagnosticMXBean diagnostic
                 = ManagementFactoryHelper.getDiagnosticMXBean();
         VMOption tmp;
         try {
             tmp = diagnostic.getVMOption(flagName);
         } catch (IllegalArgumentException e) {
             tmp = null;
         }
         return tmp == null ? null : tmp.getValue();
     }
     private void testPositive(T value, T expected) {
         Asserts.assertEQ(getVMOptionAsString(), asString(getValue()));
         setNewValue(value);
         String newValue = getVMOptionAsString();
         Asserts.assertEQ(newValue, asString(expected));
         Asserts.assertEQ(getVMOptionAsString(), asString(getValue()));
     }
     private void testNegative(T value, T expected) {
         String oldValue = getVMOptionAsString();
         Asserts.assertEQ(oldValue, asString(getValue()));
         setNewValue(value);
         String newValue = getVMOptionAsString();
         Asserts.assertEQ(oldValue, newValue);
     }
     private String asString(Object value) {
         return value == null ? null : "" + value;
     }
 }

Mercurial > jdk8-mips64-public > hotspot / annotate

test/testlibrary_tests/whitebox/vm_flags/VmFlagTest.java@0c48231c5c84 (annotated)

test/testlibrary_tests/whitebox/vm_flags/VmFlagTest.java