Quelle TestMaxTLAB.java

Sprache: JAVA

/*
* Copyright (c) 2018, Red Hat, Inc. 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.
*/

package gc.epsilon;

/**
* @test TestMaxTLAB
* @requires vm.gc.Epsilon
* @summary Check EpsilonMaxTLAB options
* @bug 8212177
*
* @run main/othervm -Xmx64m
*                   -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
*                   -XX:EpsilonMaxTLABSize=1
*                   gc.epsilon.TestMaxTLAB
*
* @run main/othervm -Xmx64m
*                   -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
*                   -XX:EpsilonMaxTLABSize=1K
*                   gc.epsilon.TestMaxTLAB
*
* @run main/othervm -Xmx64m
*                   -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
*                   -XX:EpsilonMaxTLABSize=1M
*                   gc.epsilon.TestMaxTLAB
*
* @run main/othervm -Xmx64m
*                   -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
*                   -XX:EpsilonMaxTLABSize=12345
*                   gc.epsilon.TestMaxTLAB
*/

/**
* @test TestMaxTLAB
* @requires vm.gc.Epsilon
* @requires vm.bits == "64"
* @summary Check EpsilonMaxTLAB options
* @bug 8212177
* @run main/othervm -Xmx64m
*                   -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
*                   -XX:EpsilonMaxTLABSize=1
*                   -XX:ObjectAlignmentInBytes=16
*                   gc.epsilon.TestMaxTLAB
*
* @run main/othervm -Xmx64m
*                   -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
*                   -XX:EpsilonMaxTLABSize=1K
*                   -XX:ObjectAlignmentInBytes=16
*                   gc.epsilon.TestMaxTLAB
*
* @run main/othervm -Xmx64m
*                   -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
*                   -XX:EpsilonMaxTLABSize=1M
*                   -XX:ObjectAlignmentInBytes=16
*                   gc.epsilon.TestMaxTLAB
*
* @run main/othervm -Xmx64m
*                   -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC
*                   -XX:EpsilonMaxTLABSize=12345
*                   -XX:ObjectAlignmentInBytes=16
*                   gc.epsilon.TestMaxTLAB
*/

public class TestMaxTLAB {
    static Object sink;

    public static void main(String[] args) throws Exception {
        for (int c = 0; c < 1000; c++) {
            sink = new byte[c];
        }
    }
}

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