89c5882d2e
The new NMT2 tests got lost on the way into jdk9 yesterday, this change adds them. Reviewed-by: coleenp, zgu, ctornqvi
66 lines
2.7 KiB
Java
66 lines
2.7 KiB
Java
/*
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* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @key stress
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* @test
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* @summary Test corner case that overflows malloc site hashtable bucket
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* @key nmt jcmd
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* @library /testlibrary /testlibrary/whitebox
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* @ignore - This test is disabled since it will stress NMT and timeout during normal testing
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* @build MallocSiteHashOverflow
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* @run main ClassFileInstaller sun.hotspot.WhiteBox
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* @run main/othervm/timeout=480 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow
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*/
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import com.oracle.java.testlibrary.*;
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import sun.hotspot.WhiteBox;
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public class MallocSiteHashOverflow {
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private static long K = 1024;
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public static void main(String args[]) throws Exception {
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String vm_name = System.getProperty("java.vm.name");
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// For 32-bit systems, create 257 malloc sites with the same hash bucket to overflow a hash bucket
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// For 64-bit systems, create 64K + 1 malloc sites with the same hash bucket to overflow a hash bucket
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long entries = 257;
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if (Platform.is64bit()) {
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entries = 64 * K + 1;
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}
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OutputAnalyzer output;
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WhiteBox wb = WhiteBox.getWhiteBox();
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// Grab my own PID
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String pid = Integer.toString(ProcessTools.getProcessId());
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ProcessBuilder pb = new ProcessBuilder();
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wb.NMTOverflowHashBucket(entries);
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// Run 'jcmd <pid> VM.native_memory summary'
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pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "statistics"});
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output = new OutputAnalyzer(pb.start());
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output.shouldContain("Tracking level has been downgraded due to lack of resources");
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}
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}
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