Trace
class Trace : NSObject, PerformanceAttributable
FIRTrace objects contain information about a “Trace”, which is a sequence of steps. Traces can be used to measure the time taken for a sequence of steps. Traces also include “Counters”. Counters are used to track information which is cumulative in nature (e.g., Bytes downloaded). Counters are scoped to an FIRTrace object.
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@brief Name of the trace.
Declaration
Swift
var name: String { get }
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Unavailable
@brief Not a valid initializer.
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Starts the trace.
Declaration
Swift
func start()
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Stops the trace if the trace is active.
Declaration
Swift
func stop()
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Atomically increments the metric for the provided metric name with the provided value. If it is a new metric name, the metric value will be initialized to the value. Does nothing if the trace has not been started or has already been stopped.
Declaration
Swift
func incrementMetric(_ metricName: String, by incrementValue: Int64)
Parameters
metricName
The name of the metric to increment.
incrementValue
The value to increment the metric by.
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Gets the value of the metric for the provided metric name. If the metric doesn’t exist, a 0 is returned.
Declaration
Swift
func valueForMetric(_ metricName: String) -> Int64
Parameters
metricName
The name of metric whose value to get.
Return Value
The value of the given metric or 0 if it hasn’t yet been set.
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Sets the value of the metric for the provided metric name to the provided value. Does nothing if the trace has not been started or has already been stopped.
Declaration
Swift
func setValue(_ value: Int64, forMetric metricName: String)
Parameters
metricName
The name of the metric to set.
value
The value to set the metric to.