[#BloombergLP-balb-PerformanceMonitor-Statistics]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/balb.adoc[balb]::xref:BloombergLP/balb/PerformanceMonitor.adoc[PerformanceMonitor]::Statistics
:relfileprefix: ../../../
:mrdocs:

Defines the performance statistics collected for a monitored process. Note that this class is not fully value‐semantic. It is intended to provide a read‐only view of a set of collected performance statistics.

== Synopsis

Declared in `<balb_performancemonitor.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class Statistics;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/2constructor-05.adoc[`Statistics`]         [.small]#[constructor]#
| Constructors
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/avgValue.adoc[`avgValue`] 
| Return the average of the collected values for the specified `metric`, or an unspecified value if no values have been collected.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/description.adoc[`description`] 
| Return the user‐supplied description of the process identified by the result of the `pid()` function.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/elapsedTime.adoc[`elapsedTime`] 
| Return the number of seconds (in wall time) that have elapsed since the startup the process identified by the result of the `pid()` function.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/latestValue.adoc[`latestValue`] 
| Return the latest collected value for the specified `measure`, or 0 if no values are yet available.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/maxValue.adoc[`maxValue`] 
| Return the maximum collected value for the specified `measure`, or a large negative value if no values have been collected.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/minValue.adoc[`minValue`] 
| Return the minimum collected value for the specified `measure`, or a large positive value if no values have been collected.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/pid.adoc[`pid`] 
| Return the pid for which these statistics were collected.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/print-08.adoc[`print`] 
| `print` overloads
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/reset.adoc[`reset`] 
| Reset this object to the state in which no samples have been collected. Note that although this method is public, it can't be called directly by users, since `PerformanceMonitor` provides only const access to statistics.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/startupTime.adoc[`startupTime`] 
| Return the startup time in Coordinated Universal Time.
| xref:BloombergLP/balb/PerformanceMonitor/Statistics/2conversion.adoc[`operator BloombergLP::bslmf::NestedTraitDeclaration<Statistics, UsesBslmaAllocator>`] 
| Declare that this type uses a `bslma` allocator.
|===


== Friends

[cols="1,4"]
|===
| Name| Description
| `xref:BloombergLP/balb/PerformanceMonitor.adoc[BloombergLP::balb::PerformanceMonitor::Collector]`
| 
|===


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