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A Shaded CQL ActivityType driver for http://nosqlbench.io/

There is a newer version: 4.15.102

/**
 * MIT License
 *
 * Copyright (c) 2010 - 2020 The OSHI Project Contributors: https://github.com/oshi/oshi/graphs/contributors
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package oshi.hardware.platform.unix.freebsd;

import com.sun.jna.Memory; // NOSONAR squid:S1191
import com.sun.jna.Pointer;
import com.sun.jna.ptr.IntByReference;

import oshi.annotation.concurrent.ThreadSafe;
import oshi.hardware.common.AbstractSensors;
import oshi.jna.platform.unix.freebsd.FreeBsdLibc;

/**
 * Sensors from coretemp
 */
@ThreadSafe
final class FreeBsdSensors extends AbstractSensors {

    @Override
    public double queryCpuTemperature() {
        return queryKldloadCoretemp();
    }

    /*
     * If user has loaded coretemp module via kldload coretemp, sysctl call will
     * return temperature
     *
     * @return Tempurature if successful, otherwise NaN
     */
    private static double queryKldloadCoretemp() {
        String name = "dev.cpu.%d.temperature";
        IntByReference size = new IntByReference(FreeBsdLibc.INT_SIZE);
        Pointer p = new Memory(size.getValue());
        int cpu = 0;
        double sumTemp = 0d;
        while (0 == FreeBsdLibc.INSTANCE.sysctlbyname(String.format(name, cpu), p, size, null, 0)) {
            sumTemp += p.getInt(0) / 10d - 273.15;
            cpu++;
        }
        return cpu > 0 ? sumTemp / cpu : Double.NaN;
    }

    @Override
    public int[] queryFanSpeeds() {
        // Nothing known on FreeBSD for this.
        return new int[0];
    }

    @Override
    public double queryCpuVoltage() {
        // Nothing known on FreeBSD for this.
        return 0d;
    }
}