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comparison test/runtime/NMT/MallocSiteHashOverflow.java @ 20394:017b0145f20c

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8054952: [TESTBUG] Add missing NMT2 tests Summary: The new NMT2 tests got lost on the way into jdk9 yesterday, this change adds them. Reviewed-by: coleenp, zgu, ctornqvi
author gtriantafill
date Tue, 12 Aug 2014 14:06:41 -0700
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children 3f9ff5e261c6
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20393:966601b12d4f 20394:017b0145f20c
1 /*
2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @key stress
26 * @test
27 * @summary Test corner case that overflows malloc site hashtable bucket
28 * @key nmt jcmd
29 * @library /testlibrary /testlibrary/whitebox
30 * @ignore - This test is disabled since it will stress NMT and timeout during normal testing
31 * @build MallocSiteHashOverflow
32 * @run main ClassFileInstaller sun.hotspot.WhiteBox
33 * @run main/othervm/timeout=480 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow
34 */
35
36 import com.oracle.java.testlibrary.*;
37 import sun.hotspot.WhiteBox;
38
39 public class MallocSiteHashOverflow {
40 private static long K = 1024;
41 public static void main(String args[]) throws Exception {
42 String vm_name = System.getProperty("java.vm.name");
43
44 // For 32-bit systems, create 257 malloc sites with the same hash bucket to overflow a hash bucket
45 // For 64-bit systems, create 64K + 1 malloc sites with the same hash bucket to overflow a hash bucket
46 long entries = 257;
47 if (Platform.is64bit()) {
48 entries = 64 * K + 1;
49 }
50
51 OutputAnalyzer output;
52 WhiteBox wb = WhiteBox.getWhiteBox();
53
54 // Grab my own PID
55 String pid = Integer.toString(ProcessTools.getProcessId());
56 ProcessBuilder pb = new ProcessBuilder();
57
58 wb.NMTOverflowHashBucket(entries);
59
60 // Run 'jcmd <pid> VM.native_memory summary'
61 pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "statistics"});
62 output = new OutputAnalyzer(pb.start());
63 output.shouldContain("Tracking level has been downgraded due to lack of resources");
64 }
65 }