[jira] [Resolved] (GEODE-7010) Replace static globals in CachePerfStats with StatisticsClock

["Kirk Lund (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GEODE-7010?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kirk Lund resolved GEODE-7010.
------------------------------
       Resolution: Fixed
    Fix Version/s: 1.10.0

> Replace static globals in CachePerfStats with StatisticsClock
> -------------------------------------------------------------
>
>                 Key: GEODE-7010
>                 URL: https://issues.apache.org/jira/browse/GEODE-7010
>             Project: Geode
>          Issue Type: Wish
>          Components: statistics
>            Reporter: Kirk Lund
>            Assignee: Kirk Lund
>            Priority: Major
>             Fix For: 1.10.0
>
>          Time Spent: 2h 50m
>  Remaining Estimate: 0h
>
> Introduce new StatisticsClock interface. An instance will be created during Cache creation. The method isEnabled() will be configured by system.getConfig().getEnableTimeStatistics() and getTime() will return System.nanoTime() if enabled or zero if disabled. This instance will be passed around and injected as a dependency via the constructor of each class that uses it.
> {noformat}
> @FunctionalInterface
> public interface StatisticsClock {
>   /**
>    * Returns the current value of the running Java Virtual Machine's high-resolution time source,
>    * in nanoseconds.
>    *
>    * <p>
>    * See {@code java.lang.System#nanoTime()}.
>    */
>   long getTime();
>   /**
>    * Returns true if this clock is enabled. If disabled then {@code getTime()} will return zero.
>    *
>    * <p>
>    * Default returns {@code true}.
>    */
>   default boolean isEnabled() {
>     return true;
>   }
> }
> {noformat}



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