--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/arguments/TestNewSizeFlags.java Tue Sep 01 21:38:07 2015 +0300
@@ -0,0 +1,296 @@
+/*
+ * 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 TestNewSizeFlags
+ * @key gc
+ * @bug 8025166
+ * @summary Verify that young gen size conforms values specified by NewSize, MaxNewSize and Xmn options
+ * @library /testlibrary /../../test/lib
+ * @modules java.base/sun.misc
+ * java.management
+ * @build TestNewSizeFlags
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run driver/timeout=240 TestNewSizeFlags
+ */
+
+import jdk.test.lib.AllocationHelper;
+import java.io.IOException;
+import java.lang.management.MemoryUsage;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.LinkedList;
+import jdk.test.lib.HeapRegionUsageTool;
+import jdk.test.lib.OutputAnalyzer;
+import jdk.test.lib.ProcessTools;
+import jdk.test.lib.Utils;
+import sun.hotspot.WhiteBox;
+
+public class TestNewSizeFlags {
+
+ public static final long M = 1024 * 1024;
+
+ public static void main(String args[]) throws Exception {
+ LinkedList<String> options = new LinkedList<>(
+ Arrays.asList(Utils.getFilteredTestJavaOpts("(-Xm[nsx][^ ]+)|"
+ + "(-XX:(Max)?((New)|"
+ + "(Heap))((Size)|"
+ + "(Ratio))=[^ ]+)"))
+ );
+
+ // Test NewSize and MaxNewSize
+ testNewSizeFlags(20 * M, 10 * M, 30 * M, 40 * M, options, false);
+ testNewSizeFlags(10 * M, 20 * M, 30 * M, 40 * M, options, false);
+ testNewSizeFlags(-1, 20 * M, 30 * M, 40 * M, options, false);
+ testNewSizeFlags(10 * M, -1, 30 * M, 40 * M, options, false);
+ testNewSizeFlags(20 * M, 20 * M, 30 * M, 40 * M, options, false);
+ testNewSizeFlags(20 * M, 30 * M, 40 * M, 50 * M, options, false);
+ testNewSizeFlags(30 * M, 100 * M, 150 * M, 200 * M, options, false);
+ testNewSizeFlags(0, -1, 30 * M, 40 * M, options, false);
+
+ // Test -Xmn
+ testXmnFlags(0, 30 * M, 40 * M, options, true);
+ testXmnFlags(20 * M, 30 * M, 40 * M, options, false);
+ testXmnFlags(50 * M, 70 * M, 100 * M, options, false);
+ }
+
+ /**
+ * Verify that NewSize and MaxNewSize flags affect young gen size.
+ *
+ * @param newSize value of NewSize option, omitted if negative
+ * @param maxNewSize value of MaxNewSize option, omitted if negative
+ * @param heapSize value of HeapSize option
+ * @param maxHeapSize value of MaxHeapSize option
+ * @param options additional options for JVM
+ * @param failureExpected true if JVM should fail with passed heap size options
+ */
+ public static void testNewSizeFlags(long newSize, long maxNewSize,
+ long heapSize, long maxHeapSize,
+ LinkedList<String> options,
+ boolean failureExpected) throws Exception {
+ testVMOptions(newSize, maxNewSize,
+ heapSize, maxHeapSize,
+ newSize, (maxNewSize >= 0 ? Math.max(maxNewSize, newSize) : maxNewSize),
+ options, failureExpected);
+ }
+
+ /**
+ * Verify that -Xmn flag affect young gen size.
+ *
+ * @param mnValue value of -Xmn option
+ * @param heapSize value of HeapSize option
+ * @param maxHeapSize value of MaxHeapSize option
+ * @param options additional options for JVM
+ * @param failureExpected true if JVM should fail with passed heap size options
+ */
+ public static void testXmnFlags(long mnValue,
+ long heapSize, long maxHeapSize,
+ LinkedList<String> options,
+ boolean failureExpected) throws Exception {
+ LinkedList<String> newOptions = new LinkedList<>(options);
+ newOptions.add("-Xmn" + mnValue);
+ testVMOptions(-1, -1,
+ heapSize, maxHeapSize,
+ mnValue, mnValue,
+ newOptions, failureExpected);
+ }
+
+ /**
+ * Verify that NewSize and MaxNewSize flags affect young gen size.
+ *
+ * @param newSize value of NewSize option, omitted if negative
+ * @param maxNewSize value of MaxNewSize option, omitted if negative
+ * @param heapSize value of HeapSize option
+ * @param maxHeapSize value of MaxHeapSize option
+ * @param expectedNewSize expected initial young gen size
+ * @param expectedMaxNewSize expected max young gen size
+ * @param options additional options for JVM
+ * @param failureExpected true if JVM should fail with passed heap size options
+ */
+ public static void testVMOptions(long newSize, long maxNewSize,
+ long heapSize, long maxHeapSize,
+ long expectedNewSize, long expectedMaxNewSize,
+ LinkedList<String> options, boolean failureExpected) throws Exception {
+ OutputAnalyzer analyzer = startVM(options, newSize, maxNewSize, heapSize, maxHeapSize, expectedNewSize, expectedMaxNewSize);
+
+ if (failureExpected) {
+ analyzer.shouldHaveExitValue(1);
+ analyzer.shouldMatch("(Error occurred during initialization of VM)|"
+ + "(Error: Could not create the Java Virtual Machine.)");
+ } else {
+ analyzer.shouldHaveExitValue(0);
+ }
+ }
+
+ private static OutputAnalyzer startVM(LinkedList<String> options,
+ long newSize, long maxNewSize,
+ long heapSize, long maxHeapSize,
+ long expectedNewSize, long expectedMaxNewSize) throws Exception, IOException {
+ LinkedList<String> vmOptions = new LinkedList<>(options);
+ Collections.addAll(vmOptions,
+ "-Xbootclasspath/a:.",
+ "-XX:+UnlockDiagnosticVMOptions",
+ "-XX:+WhiteBoxAPI",
+ (newSize >= 0 ? "-XX:NewSize=" + newSize : ""),
+ (maxNewSize >= 0 ? "-XX:MaxNewSize=" + maxNewSize : ""),
+ "-Xmx" + maxHeapSize,
+ "-Xms" + heapSize,
+ "-XX:GCLockerEdenExpansionPercent=0",
+ "-XX:-UseLargePages",
+ NewSizeVerifier.class.getName(),
+ Long.toString(expectedNewSize),
+ Long.toString(expectedMaxNewSize)
+ );
+ vmOptions.removeIf(String::isEmpty);
+ ProcessBuilder procBuilder = ProcessTools.createJavaProcessBuilder(vmOptions.toArray(new String[vmOptions.size()]));
+ OutputAnalyzer analyzer = new OutputAnalyzer(procBuilder.start());
+ return analyzer;
+ }
+
+ /**
+ * NewSizeVerifier checks that initial young gen size is equal to expected
+ * regardful to alignment and that young gen size will not be greater than
+ * expected max size.
+ * In order to verify that young gen size will not be greater then expected
+ * max size, NewSizeVerifier do some object allocation to force garbage
+ * collection and heap expansion.
+ */
+ public static class NewSizeVerifier {
+
+ static WhiteBox wb = WhiteBox.getWhiteBox();
+
+ public static final int ARRAY_LENGTH = 100;
+ public static final int CHUNK_SIZE = 1024;
+ public static final int MAX_ITERATIONS = 10;
+ public static byte garbage[][] = new byte[ARRAY_LENGTH][];
+
+ public static void main(String args[]) throws Exception {
+ if (args.length != 2) {
+ throw new IllegalArgumentException("Expected 2 args: <expectedNewSize> <expectedMaxNewSize>");
+ }
+ final long newSize = Long.valueOf(args[0]);
+ final long maxNewSize = Long.valueOf(args[1]);
+
+ // verify initial size
+ verifyNewSize(newSize, maxNewSize);
+
+ // force GC and verify that size is still correct
+ AllocationHelper allocator = new AllocationHelper(MAX_ITERATIONS, ARRAY_LENGTH, CHUNK_SIZE, () -> (verifyNewSize(newSize, maxNewSize)));
+ allocator.allocateMemoryAndVerifyNoOOME();
+ }
+
+ /**
+ * Verify that actual young gen size conforms NewSize and MaxNewSize values.
+ */
+ public static Void verifyNewSize(long newSize, long maxNewSize) {
+ long alignedNewSize = alignNewSize(newSize);
+ long alignedMaxNewSize = alignNewSize(maxNewSize);
+
+ MemoryUsage youngGenUsage = getYoungGenUsage();
+
+ if (newSize != -1) {
+ if (youngGenUsage.getInit() < alignedNewSize) {
+ throw new RuntimeException("initial new size < NewSize value: "
+ + youngGenUsage.getInit() + " < " + alignedNewSize);
+ }
+
+ if (youngGenUsage.getCommitted() < alignedNewSize) {
+ throw new RuntimeException("actual new size < NewSize value: "
+ + youngGenUsage.getCommitted() + " < " + alignedNewSize);
+ }
+
+ // for G1 max new size == committed new size
+ if (GCTypes.YoungGCType.getYoungGCType() != GCTypes.YoungGCType.G1
+ && youngGenUsage.getMax() < alignedNewSize) {
+ throw new RuntimeException("max new size < NewSize value: "
+ + youngGenUsage.getMax() + " < " + alignedNewSize);
+ }
+ }
+
+ if (maxNewSize != -1) {
+ if (youngGenUsage.getInit() > alignedMaxNewSize) {
+ throw new RuntimeException("initial new size > MaxNewSize value: "
+ + youngGenUsage.getInit() + " > " + alignedMaxNewSize);
+ }
+
+ if (youngGenUsage.getCommitted() > alignedMaxNewSize) {
+ throw new RuntimeException("actual new size > MaxNewSize value: "
+ + youngGenUsage.getCommitted() + " > " + alignedMaxNewSize);
+ }
+
+ if (GCTypes.YoungGCType.getYoungGCType() != GCTypes.YoungGCType.G1
+ && youngGenUsage.getMax() != alignedMaxNewSize) {
+ throw new RuntimeException("max new size != MaxNewSize value: "
+ + youngGenUsage.getMax() + " != " + alignedMaxNewSize);
+ }
+ }
+ return null;
+ }
+
+ /**
+ * Get young gen memory usage.
+ *
+ * For G1 it is EdenUsage + SurvivorUsage,
+ * for other GCs it is EdenUsage + 2 * SurvivorUsage.
+ * For G1 max value is just LONG_MAX.
+ * For all GCs used value is 0.
+ */
+ private static MemoryUsage getYoungGenUsage() {
+ if (GCTypes.YoungGCType.getYoungGCType() == GCTypes.YoungGCType.G1) {
+ return new MemoryUsage(HeapRegionUsageTool.getEdenUsage().getInit()
+ + HeapRegionUsageTool.getSurvivorUsage().getInit(),
+ 0,
+ HeapRegionUsageTool.getEdenUsage().getCommitted()
+ + HeapRegionUsageTool.getSurvivorUsage().getCommitted(),
+ Long.MAX_VALUE);
+ } else {
+ return new MemoryUsage(HeapRegionUsageTool.getEdenUsage().getInit()
+ + HeapRegionUsageTool.getSurvivorUsage().getInit() * 2,
+ 0,
+ HeapRegionUsageTool.getEdenUsage().getCommitted()
+ + HeapRegionUsageTool.getSurvivorUsage().getCommitted() * 2,
+ HeapRegionUsageTool.getEdenUsage().getMax()
+ + HeapRegionUsageTool.getSurvivorUsage().getMax() * 2);
+ }
+ }
+
+ /**
+ * Align value regardful to used young GC.
+ */
+ public static long alignNewSize(long value) {
+ switch (GCTypes.YoungGCType.getYoungGCType()) {
+ case DefNew:
+ case ParNew:
+ return HeapRegionUsageTool.alignDown(value, wb.getHeapSpaceAlignment());
+ case PSNew:
+ return HeapRegionUsageTool.alignUp(HeapRegionUsageTool.alignDown(value,
+ wb.getHeapSpaceAlignment()),
+ wb.psVirtualSpaceAlignment());
+ case G1:
+ return HeapRegionUsageTool.alignUp(value, wb.g1RegionSize());
+ default:
+ throw new RuntimeException("Unexpected young GC type");
+ }
+ }
+ }
+}