jdk8-mips64-public/hotspot: test/runtime/NMT/MallocSiteHashOverflow.java@4edd7572c235

8054836: [TESTBUG] Test is needed to verify correctness of malloc tracking
Reviewed-by: ctornqvi, lfoltan

     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  */

    24 /*

    25  * @test

    26  * @summary Test corner case that overflows malloc site hashtable bucket

    27  * @key nmt jcmd stress

    28  * @library /testlibrary /testlibrary/whitebox

    29  * @ignore - This test is disabled since it will stress NMT and timeout during normal testing

    30  * @build MallocSiteHashOverflow

    31  * @run main ClassFileInstaller sun.hotspot.WhiteBox

    32  * @run main/othervm/timeout=480 -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI -XX:NativeMemoryTracking=detail MallocSiteHashOverflow

    33  */

    35 import com.oracle.java.testlibrary.*;

    36 import sun.hotspot.WhiteBox;

    38 public class MallocSiteHashOverflow {

    39     private static long K = 1024;

    40     public static void main(String args[]) throws Exception {

    41         String vm_name = System.getProperty("java.vm.name");

    43         // For 32-bit systems, create 257 malloc sites with the same hash bucket to overflow a hash bucket

    44         // For 64-bit systems, create 64K + 1 malloc sites with the same hash bucket to overflow a hash bucket

    45         long entries = 257;

    46         if (Platform.is64bit()) {

    47             entries = 64 * K + 1;

    48         }

    50         OutputAnalyzer output;

    51         WhiteBox wb = WhiteBox.getWhiteBox();

    53         // Grab my own PID

    54         String pid = Integer.toString(ProcessTools.getProcessId());

    55         ProcessBuilder pb = new ProcessBuilder();

    57         wb.NMTOverflowHashBucket(entries);

    59         // Run 'jcmd <pid> VM.native_memory summary'

    60         pb.command(new String[] { JDKToolFinder.getJDKTool("jcmd"), pid, "VM.native_memory", "statistics"});

    61         output = new OutputAnalyzer(pb.start());

    62         output.shouldContain("Tracking level has been downgraded due to lack of resources");

    63     }

    64 }

Mercurial > jdk8-mips64-public > hotspot / file revision

test/runtime/NMT/MallocSiteHashOverflow.java@4edd7572c235

test/runtime/NMT/MallocSiteHashOverflow.java