test/hotspot/jtreg/gc/TestCardTablePageCommits.java
changeset 47216 71c04702a3d5
parent 41705 332239c052cc
child 53523 4c5184c56dc2
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/gc/TestCardTablePageCommits.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2014, 2016, 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 jdk.test.lib.JDKToolFinder;
+import jdk.test.lib.process.ProcessTools;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.Platform;
+
+/*
+ * @test TestCardTablePageCommits
+ * @key gc
+ * @bug 8059066
+ * @summary Tests that the card table does not commit the same page twice
+ * @requires vm.gc.Parallel
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ * @run driver TestCardTablePageCommits
+ */
+public class TestCardTablePageCommits {
+    public static void main(String args[]) throws Exception {
+        // The test is run with a small heap to make sure all pages in the card
+        // table gets committed. Need 8 MB heap to trigger the bug on SPARC
+        // because of 8kB pages, assume 4 KB pages for all other CPUs.
+        String Xmx = Platform.isSparc() ? "-Xmx8m" : "-Xmx4m";
+
+        String[] opts = {Xmx, "-XX:NativeMemoryTracking=detail", "-XX:+UseParallelGC", "-version"};
+        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(opts);
+        OutputAnalyzer output = new OutputAnalyzer(pb.start());
+        output.shouldHaveExitValue(0);
+    }
+}