oshi.driver.windows.perfmon.PagingFile Maven / Gradle / Ivy
/**
* 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.driver.windows.perfmon;
import java.util.Map;
import oshi.annotation.concurrent.ThreadSafe;
import oshi.util.platform.windows.PerfCounterQuery;
import oshi.util.platform.windows.PerfCounterQuery.PdhCounterProperty;
/**
* Utility to query Paging File performance counter
*/
@ThreadSafe
public final class PagingFile {
private static final String PAGING_FILE = "Paging File";
private static final String WIN32_PERF_RAW_DATA_PERF_OS_PAGING_FILE = "Win32_PerfRawData_PerfOS_PagingFile";
/*
* For swap file usage
*/
public enum PagingPercentProperty implements PdhCounterProperty {
PERCENTUSAGE(PerfCounterQuery.TOTAL_INSTANCE, "% Usage");
private final String instance;
private final String counter;
PagingPercentProperty(String instance, String counter) {
this.instance = instance;
this.counter = counter;
}
@Override
public String getInstance() {
return instance;
}
@Override
public String getCounter() {
return counter;
}
}
private PagingFile() {
}
/**
* Returns paging file counters
*
* @return Paging file counters for memory.
*/
public static Map querySwapUsed() {
return PerfCounterQuery.queryValues(PagingPercentProperty.class, PAGING_FILE,
WIN32_PERF_RAW_DATA_PERF_OS_PAGING_FILE);
}
}