kotlin-stdlib / kotlin.system / measureTimeMillis

measureTimeMillis

JVM

1.0

inline fun measureTimeMillis(block: () -> Unit): Long
(source)

Native

1.3

@DeprecatedSinceKotlin("1.9") inline fun measureTimeMillis(
    block: () -> Unit
): Long

(source)

Deprecated: Use measureTime() instead.

For JVM

Executes the given block and returns elapsed time in milliseconds.

import kotlin.system.*

fun main(args: Array<String>) {
//sampleStart
val numbers: List<Int>
val timeInMillis = measureTimeMillis {
    numbers = buildList {
        addAll(0..100)
        shuffle()
        sortDescending()
    }
}
// here numbers are initialized and sorted
println(numbers.first()) // 100

println("(The operation took $timeInMillis ms)")
//sampleEnd
}

For Native

Executes the given block and returns elapsed time in milliseconds.

This function is deprecated. To measure the duration of execution of a block of code, use measureTime or measureTimedValue instead. The resulting Duration then can be expressed as a Long number of milliseconds using Duration.inWholeMilliseconds.

import kotlin.system.*

fun main(args: Array<String>) {
//sampleStart
val numbers: List<Int>
val timeInMillis = measureTimeMillis {
    numbers = buildList {
        addAll(0..100)
        shuffle()
        sortDescending()
    }
}
// here numbers are initialized and sorted
println(numbers.first()) // 100

println("(The operation took $timeInMillis ms)")
//sampleEnd
}