ARM 4.0 Metric Counters [ARM 4.0 Metrics]

A counter is a monotonically increasing non-negative value up to its maximum possible value, at which point it wraps around to zero and starts again. More...

Classes
interface	org.opengroup.arm40.metric.ArmMetricCounter32
	Implements a 32-bit integer counter. More...
interface	org.opengroup.arm40.metric.ArmMetricCounter32Definition
	Marks a metadata binding. More...
interface	org.opengroup.arm40.metric.ArmMetricCounter64
	Implements a 64-bit integer counter. More...
interface	org.opengroup.arm40.metric.ArmMetricCounter64Definition
	Marks a metadata binding. More...
interface	org.opengroup.arm40.metric.ArmMetricCounterFloat32
	Implements a 32-bit floating-point counter. More...
interface	org.opengroup.arm40.metric.ArmMetricCounterFloat32Definition
	Marks a metadata binding. More...

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Detailed Description

A counter is a monotonically increasing non-negative value up to its maximum possible value, at which point it wraps around to zero and starts again.

This is the IETF (Internet Engineering Task Force) RFC 1155 definition of a counter. A counter should be used when it makes sense to sum up the values over an interval. Examples are bytes printed and records written. The values can also be averaged, maximums and minimums (per transaction) can be calculated, and other kinds of statistical calculations can be performed.

ARM supports three counter types:

• 32-bit integer: org.opengroup.arm40.metric.ArmMetricCounter32
• 64-bit integer: org.opengroup.arm40.metric.ArmMetricCounter64
• 32-bit floating-point: org.opengroup.arm40.metric.ArmMetricCounterFloat32 The floating-point standard is IEEE 754 (the same as the Java language).