--- a/hotspot/.hgtags Thu Nov 13 16:11:00 2014 -0800
+++ b/hotspot/.hgtags Fri Nov 21 08:00:31 2014 -0800
@@ -442,3 +442,4 @@
b1c2dd843f247a1db19e1e85eb62ca405f72dc26 jdk9-b37
c363a8b87e477ee45d6d3cb2a36cb365141bc596 jdk9-b38
9cb75e5e394827ccbaf2e15524108a412dc4ddc5 jdk9-b39
+6b09b3193d731e3288e2a240c504a20d0a06c766 jdk9-b40
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/gc/TestSoftReferencesBehaviorOnOOME.java Fri Nov 21 08:00:31 2014 -0800
@@ -0,0 +1,146 @@
+/*
+ * 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.
+ */
+
+/**
+ * @test TestSoftReferencesBehaviorOnOOME
+ * @key gc
+ * @summary Tests that all SoftReferences has been cleared at time of OOM.
+ * @library /testlibrary
+ * @build TestSoftReference
+ * @run main/othervm -Xmx128m TestSoftReferencesBehaviorOnOOME 512 2k
+ * @run main/othervm -Xmx128m TestSoftReferencesBehaviorOnOOME 128k 256k
+ * @run main/othervm -Xmx128m TestSoftReferencesBehaviorOnOOME 2k 32k 10
+ */
+import com.oracle.java.testlibrary.Utils;
+import java.lang.ref.SoftReference;
+import java.util.LinkedList;
+import java.util.Random;
+
+public class TestSoftReferencesBehaviorOnOOME {
+
+ private static final Random rndGenerator = Utils.getRandomInstance();
+
+ public static void main(String[] args) {
+ int semiRefAllocFrequency = DEFAULT_FREQUENCY;
+ long minSize = DEFAULT_MIN_SIZE,
+ maxSize = DEFAULT_MAX_SIZE;
+
+ if ( args.length >= 3 ) {
+ semiRefAllocFrequency = Integer.parseInt(args[2]);
+ }
+
+ if ( args.length >= 2) {
+ maxSize = getBytesCount(args[1]);
+ }
+
+ if ( args.length >= 1) {
+ minSize = getBytesCount(args[0]);
+ }
+
+ new TestSoftReferencesBehaviorOnOOME().softReferencesOom(minSize, maxSize, semiRefAllocFrequency);
+ }
+
+ /**
+ * Test that all SoftReferences has been cleared at time of OOM.
+ */
+ void softReferencesOom(long minSize, long maxSize, int semiRefAllocFrequency) {
+ System.out.format( "minSize = %d, maxSize = %d, freq = %d%n", minSize, maxSize, semiRefAllocFrequency );
+ long counter = 0;
+
+ long multiplier = maxSize - minSize;
+ LinkedList<SoftReference> arrSoftRefs = new LinkedList();
+ LinkedList arrObjects = new LinkedList();
+ long numberOfNotNulledObjects = 0;
+ long oomSoftArraySize = 0;
+
+ try {
+ while (true) {
+ // Keep every Xth object to make sure we hit OOM pretty fast
+ if (counter % semiRefAllocFrequency != 0) {
+ long allocationSize = ((int) (rndGenerator.nextDouble() * multiplier))
+ + minSize;
+ arrObjects.add(new byte[(int)allocationSize]);
+ } else {
+ arrSoftRefs.add(new SoftReference(new Object()));
+ }
+
+ counter++;
+ if (counter == Long.MAX_VALUE) {
+ counter = 0;
+ }
+ }
+ } catch (OutOfMemoryError oome) {
+ // Clear allocated ballast, so we don't get another OOM.
+
+ arrObjects = null;
+
+ // Get the number of soft refs first, so we don't trigger
+ // another OOM.
+ oomSoftArraySize = arrSoftRefs.size();
+
+ for (SoftReference sr : arrSoftRefs) {
+ Object o = sr.get();
+
+ if (o != null) {
+ numberOfNotNulledObjects++;
+ }
+ }
+
+ // Make sure we clear all refs before we return failure
+ arrSoftRefs = null;
+
+ if (numberOfNotNulledObjects > 0) {
+ throw new RuntimeException(numberOfNotNulledObjects + " out of "
+ + oomSoftArraySize + " SoftReferences was not "
+ + "null at time of OutOfMemoryError");
+ }
+ } finally {
+ arrSoftRefs = null;
+ arrObjects = null;
+ }
+ }
+
+ private static final long getBytesCount(String arg) {
+ String postfixes = "kMGT";
+ long mod = 1;
+
+ if (arg.trim().length() >= 2) {
+ mod = postfixes.indexOf(
+ arg.trim().charAt(arg.length() - 1)
+ );
+
+ if (mod != -1) {
+ mod = (long) Math.pow(1024, mod+1);
+ arg = arg.substring(0, arg.length() - 1);
+ } else {
+ mod = 1; // 10^0
+ }
+ }
+
+ return Long.parseLong(arg) * mod;
+ }
+
+ private static final long DEFAULT_MIN_SIZE = 512;
+ private static final long DEFAULT_MAX_SIZE = 1024;
+ private static final int DEFAULT_FREQUENCY = 4;
+}
--- a/hotspot/test/gc/g1/TestHumongousShrinkHeap.java Thu Nov 13 16:11:00 2014 -0800
+++ b/hotspot/test/gc/g1/TestHumongousShrinkHeap.java Fri Nov 21 08:00:31 2014 -0800
@@ -24,9 +24,12 @@
/**
* @test TestHumongousShrinkHeap
* @bug 8036025 8056043
- * @summary Verify that heap shrinks after GC in the presence of fragmentation due to humongous objects
+ * @summary Verify that heap shrinks after GC in the presence of fragmentation
+ * due to humongous objects
* @library /testlibrary
- * @run main/othervm -XX:MinHeapFreeRatio=10 -XX:MaxHeapFreeRatio=12 -XX:+UseG1GC -XX:G1HeapRegionSize=1M -verbose:gc TestHumongousShrinkHeap
+ * @run main/othervm -XX:-ExplicitGCInvokesConcurrent -XX:MinHeapFreeRatio=10
+ * -XX:MaxHeapFreeRatio=12 -XX:+UseG1GC -XX:G1HeapRegionSize=1M -verbose:gc
+ * TestHumongousShrinkHeap
*/
import java.lang.management.ManagementFactory;
--- a/hotspot/test/gc/g1/TestShrinkAuxiliaryData.java Thu Nov 13 16:11:00 2014 -0800
+++ b/hotspot/test/gc/g1/TestShrinkAuxiliaryData.java Fri Nov 21 08:00:31 2014 -0800
@@ -45,6 +45,7 @@
"-XX:MaxHeapFreeRatio=11",
"-XX:+UseG1GC",
"-XX:G1HeapRegionSize=1m",
+ "-XX:-ExplicitGCInvokesConcurrent",
"-XX:+PrintGCDetails"
};
--- a/hotspot/test/gc/g1/TestShrinkDefragmentedHeap.java Thu Nov 13 16:11:00 2014 -0800
+++ b/hotspot/test/gc/g1/TestShrinkDefragmentedHeap.java Fri Nov 21 08:00:31 2014 -0800
@@ -59,6 +59,7 @@
"-XX:MaxHeapFreeRatio=11",
"-XX:+UseG1GC",
"-XX:G1HeapRegionSize=" + REGION_SIZE,
+ "-XX:-ExplicitGCInvokesConcurrent",
"-verbose:gc",
GCTest.class.getName()
);