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diff test/runtime/NMT/ReleaseCommittedMemory.java @ 10221:c18152e0554e

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8013120: NMT: Kitchensink crashes with assert(next_region == NULL || !next_region->is_committed_region()) failed: Sanity check Summary: Fixed NMT to deal with releasing virtual memory region when there are still committed regions within it Reviewed-by: acorn, coleenp
author zgu
date Mon, 06 May 2013 11:15:13 -0400
parents
children ac12996df59b
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/runtime/NMT/ReleaseCommittedMemory.java	Mon May 06 11:15:13 2013 -0400
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2013, 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
+ * @bug 8013120
+ * @summary Release committed memory and make sure NMT handles it correctly
+ * @key nmt regression
+ * @library /testlibrary /testlibrary/whitebox
+ * @build ReleaseCommittedMemory
+ * @run main ClassFileInstaller sun.hotspot.WhiteBox
+ * @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail ReleaseCommittedMemory
+ */
+
+import sun.hotspot.WhiteBox;
+
+public class ReleaseCommittedMemory {
+
+  public static void main(String args[]) throws Exception {
+    WhiteBox wb = WhiteBox.getWhiteBox();
+    long reserveSize = 256 * 1024;
+    long addr;
+
+    addr = wb.NMTReserveMemory(reserveSize);
+    wb.NMTCommitMemory(addr, 128*1024);
+    wb.NMTReleaseMemory(addr, reserveSize);
+    wb.NMTWaitForDataMerge();
+  }
+}
+