oshi.driver.windows.perfmon.PhysicalDisk Maven / Gradle / Ivy
/*
* Copyright 2020-2022 The OSHI Project Contributors
* SPDX-License-Identifier: MIT
*/
package oshi.driver.windows.perfmon;
import static oshi.driver.windows.perfmon.PerfmonConstants.PHYSICAL_DISK;
import static oshi.driver.windows.perfmon.PerfmonConstants.WIN32_PERF_RAW_DATA_PERF_DISK_PHYSICAL_DISK_WHERE_NAME_NOT_TOTAL;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import oshi.annotation.concurrent.ThreadSafe;
import oshi.util.platform.windows.PerfCounterQuery;
import oshi.util.platform.windows.PerfCounterWildcardQuery;
import oshi.util.platform.windows.PerfCounterWildcardQuery.PdhCounterWildcardProperty;
import oshi.util.tuples.Pair;
/**
* Utility to query PhysicalDisk performance counter
*/
@ThreadSafe
public final class PhysicalDisk {
/**
* Physical Disk performance counters.
*/
public enum PhysicalDiskProperty implements PdhCounterWildcardProperty {
// First element defines WMI instance name field and PDH instance filter
NAME(PerfCounterQuery.NOT_TOTAL_INSTANCE),
// Remaining elements define counters
DISKREADSPERSEC("Disk Reads/sec"), //
DISKREADBYTESPERSEC("Disk Read Bytes/sec"), //
DISKWRITESPERSEC("Disk Writes/sec"), //
DISKWRITEBYTESPERSEC("Disk Write Bytes/sec"), //
CURRENTDISKQUEUELENGTH("Current Disk Queue Length"), //
PERCENTDISKTIME("% Disk Time");
private final String counter;
PhysicalDiskProperty(String counter) {
this.counter = counter;
}
@Override
public String getCounter() {
return counter;
}
}
private PhysicalDisk() {
}
/**
* Returns physical disk performance counters.
*
* @return Performance Counters for physical disks.
*/
public static Pair, Map>> queryDiskCounters() {
if (PerfmonDisabled.PERF_DISK_DISABLED) {
return new Pair<>(Collections.emptyList(), Collections.emptyMap());
}
return PerfCounterWildcardQuery.queryInstancesAndValues(PhysicalDiskProperty.class, PHYSICAL_DISK,
WIN32_PERF_RAW_DATA_PERF_DISK_PHYSICAL_DISK_WHERE_NAME_NOT_TOTAL);
}
}