test/hotspot/jtreg/vmTestbase/nsk/jvmti/Allocate/alloc001.java

/*
 * Copyright (c) 2003, 2018, 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.
 *
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 */

package nsk.jvmti.Allocate;

import java.io.PrintStream;

public class alloc001 {

    final static int JCK_STATUS_BASE = 95;

    static {
        try {
            System.loadLibrary("alloc001");
        } catch (UnsatisfiedLinkError ule) {
            System.err.println("Could not load alloc001 library");
            System.err.println("java.library.path:"
                + System.getProperty("java.library.path"));
            throw ule;
        }
    }

    native static int check();

    public static void main(String args[]) {
        args = nsk.share.jvmti.JVMTITest.commonInit(args);

        // produce JCK-like exit status.
        System.exit(run(args, System.out) + JCK_STATUS_BASE);
    }

    public static int run(String args[], PrintStream out) {
        final int ERROR_CODE_NO_OOM = 3; // Error code "FAILED_NO_OOM" defined in alloc001.c
        int errorCode = check();

        if (errorCode == ERROR_CODE_NO_OOM) {
            // The test failed because it did not get the expected OutOfMemory error.
            // If we run on mac, that is quite expected since mac often ignores "ulimit -v"
            final String os = System.getProperty("os.name").toLowerCase();
            out.println("os=" + os);
            if (os.indexOf("mac") >= 0 || os.indexOf("windows") >= 0) {
                String msg = "Test did not get an OutOfMemory error. " +
                        "That is not surprising on mac or windows. " +
                        "Mac usually ignores 'ulimit -v', and windows does not have it. " +
                        "We consider this test as passed.";
                out.println(msg);
                errorCode = 0;
            }
        }
        return errorCode;
    }
}