public final Class PeriodSetting

Implements abstract jdk.jfr.SettingControl.combine.

Doc from jdk.jfr.SettingControl.combine.

Combines the setting values for all running recordings into one value when multiple recordings are running at the same time,

The semantics of how setting values are combined depends on the setting control that is implemented, but all recordings should get at least all the events they request.

This method should have no side effects, because the caller might cache values. This method should never return null or throw an exception. If a value is not valid for this setting control, the value should be ignored.

Examples:

if the setting control represents a threshold and three recordings are running at the same time with the setting values "10 ms", "8 s", and "1 ms", this method returns "1 ms" because it means that all recordings get at least all the requested data.

If the setting control represents a set of names and two recordings are running at the same time with the setting values "Smith, Jones" and "Jones, Williams" the returned value is "Smith, Jones, Williams" because all names would be accepted.

If the setting control represents a boolean condition and four recordings are running at the same time with the following values "true", "false", "false", and "incorrect", this method returns "true", because all recordings get at least all the requested data.

Annotations

@Override

Implements abstract jdk.jfr.SettingControl.getValue.

Doc from jdk.jfr.SettingControl.getValue.

Returns the currently used value for this setting, not null.

The value returned by this method is valid as an argument to both the setValue(String) method and combine(Set) method.

This method is invoked when an event is registered to obtain the default value. It is therefore important that a valid value can be returned immediately after an instance of this class is created. It is not valid to return null.

Annotations

@Override

Implements abstract jdk.jfr.SettingControl.setValue.

Doc from jdk.jfr.SettingControl.setValue.

Sets the value for this setting.

If the setting value is not valid for this setting, this method does not throw an exception. Instead, the value is ignored.

Annotations

@Override