Class HkeyPerformanceDataUtilFFM

java.lang.Object
oshi.driver.common.windows.registry.HkeyPerformanceDataUtil
oshi.driver.windows.registry.HkeyPerformanceDataUtilFFM
@ThreadSafe public final class HkeyPerformanceDataUtilFFM extends oshi.driver.common.windows.registry.HkeyPerformanceDataUtil
Utility to read HKEY_PERFORMANCE_DATA information using the FFM API.

  • Field Summary

    Fields inherited from class oshi.driver.common.windows.registry.HkeyPerformanceDataUtil

    COUNTER, HKEY_PERFORMANCE_TEXT

  • Method Summary

    Modifier and Type
    Method
    Description
    static int
    getCounterIndex(String name)
    Looks up the performance counter index for the given English counter name.
    static <T extends Enum<T> & oshi.driver.common.windows.perfmon.PdhCounterWildcardProperty>
    oshi.util.tuples.Triplet<List<Map<T,Object>>, Long, Long>
    readPerfDataFromRegistry(String objectName, Class<T> counterEnum)
    Reads and parses a block of performance data from the registry.

    Methods inherited from class oshi.driver.common.windows.registry.HkeyPerformanceDataUtil

    buildCounterIndexMap, getCounterIndices

    Methods inherited from class Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Method Details

    • getCounterIndex

      public static int getCounterIndex(String name)
      Looks up the performance counter index for the given English counter name.
      Parameters:
      name - The English counter name
      Returns:
      The counter index, or 0 if not found

    • readPerfDataFromRegistry

      public static <T extends Enum<T> & oshi.driver.common.windows.perfmon.PdhCounterWildcardProperty> oshi.util.tuples.Triplet<List<Map<T,Object>>, Long, Long> readPerfDataFromRegistry(String objectName, Class<T> counterEnum)
      Reads and parses a block of performance data from the registry.
      Type Parameters:
      T - PDH Counters use an Enum to identify the fields to query in either the counter or WMI backup, and use the enum values as keys to retrieve the results.
      Parameters:
      objectName - The counter object for which to fetch data
      counterEnum - Which counters to return data for
      Returns:
      A triplet containing the results. The first element maps the input enum to the counter values where the first enum will contain the instance name as a String, and the remaining values will either be Long, Integer, or null depending on whether the specified enum counter was present and the size of the counter value. The second element is a timestamp in 100nSec increments (Windows 1601 Epoch) while the third element is a timestamp in milliseconds since the 1970 Epoch.