src/java.base/linux/classes/jdk/internal/platform/cgroupv2/CgroupV2SubsystemController.java - master - niceSOFT/openjdk21

src/java.base/linux/classes/jdk/internal/platform/cgroupv2/CgroupV2SubsystemController.java

58 строк2 KB

Severin Gehwolf

8231111: Cgroups v2: Rework Metrics in java.base so as to recognize unified hierarchy

16 дек 2019, 17:07

16 дек 2019, 17:074def210

/*
 * Copyright (c) 2020, Red Hat Inc.
 * 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.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * 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 jdk.internal.platform.cgroupv2;

import java.nio.file.Paths;

import jdk.internal.platform.CgroupSubsystem;
import jdk.internal.platform.CgroupSubsystemController;

public class CgroupV2SubsystemController implements CgroupSubsystemController {

    private final String path;

    public CgroupV2SubsystemController(String mountPath, String cgroupPath) {
        this.path = Paths.get(mountPath, cgroupPath).toString();
    }

    @Override
    public String path() {
        return path;
    }

    public static long convertStringToLong(String strval) {
        return CgroupSubsystemController.convertStringToLong(strval,
                                                             CgroupSubsystem.LONG_RETVAL_UNLIMITED /* overflow retval */,
                                                             CgroupSubsystem.LONG_RETVAL_UNLIMITED /* default retval on error */);
    }

    public static long getLongEntry(CgroupSubsystemController controller, String param, String entryname) {
        return CgroupSubsystemController.getLongEntry(controller,
                                                      param,
                                                      entryname,
                                                      CgroupSubsystem.LONG_RETVAL_UNLIMITED /* retval on error */);
    }
}