IMPORTANT: In July 2025, we stopped releasing new versions of KTX modules, and we removed the KTX libraries from the Firebase Android BoM (v34.0.0). If you use KTX APIs from the previously released KTX modules, we recommend that you migrate your app to use KTX APIs from the main modules instead. For details, see the FAQ about this initiative.

PerformanceKt

public final class PerformanceKt

Summary

Public fields
`final @NonNull FirebasePerformance`	`performance` Returns the `FirebasePerformance` instance of the default `FirebaseApp`.

Public methods
`static final void`	`PerformanceKt.trace( @NonNull HttpMetric receiver, @ExtensionFunctionType @NonNull Function1<@NonNull HttpMetric, Unit> block )` Measures the time it takes to run the `block` wrapped by calls to start and stop using `HttpMetric`.
`static final @NonNull T`	`<T extends Object> PerformanceKt.trace( @NonNull Trace receiver, @ExtensionFunctionType @NonNull Function1<@NonNull Trace, @NonNull T> block )` Measures the time it takes to run the `block` wrapped by calls to start and stop using `Trace`.
`static final @NonNull T`	`<T extends Object> trace( @NonNull String name, @ExtensionFunctionType @NonNull Function1<@NonNull Trace, @NonNull T> block )` Creates a `Trace` object with given `name` and measures the time it takes to run the `block` wrapped by calls to start and stop.

Public fields

performance

public final @NonNull FirebasePerformance performance

Returns the FirebasePerformance instance of the default FirebaseApp.

Public methods

PerformanceKt.trace

public static final void PerformanceKt.trace(
    @NonNull HttpMetric receiver,
    @ExtensionFunctionType @NonNull Function1<@NonNull HttpMetric, Unit> block
)

Measures the time it takes to run the block wrapped by calls to start and stop using HttpMetric.

PerformanceKt.trace

public static final @NonNull T <T extends Object> PerformanceKt.trace(
    @NonNull Trace receiver,
    @ExtensionFunctionType @NonNull Function1<@NonNull Trace, @NonNull T> block
)

Measures the time it takes to run the block wrapped by calls to start and stop using Trace.

trace

public static final @NonNull T <T extends Object> trace(
    @NonNull String name,
    @ExtensionFunctionType @NonNull Function1<@NonNull Trace, @NonNull T> block
)

Creates a Trace object with given name and measures the time it takes to run the block wrapped by calls to start and stop.