azalea/kotlin-fork
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Saturate overflowing values when adjusting time marks

Browse Source 
KT-46132
This commit is contained in:
Ilya Gorbunov
2022-02-20 08:31:09 +03:00
committed by Space
parent f32e0f3cba
commit 77cf41c189
7 changed files with 194 additions and 14 deletions
Download Patch File Download Diff File Expand all files Collapse all files
libraries/stdlib/jvm/src/kotlin/time/MonoTimeSource.kt
+5 -7
View File
@@ -5,23 +5,21 @@
package kotlin.time
import kotlin.time.Duration.Companion.nanoseconds
@SinceKotlin("1.3")
@ExperimentalTime
internal actual object MonotonicTimeSource : TimeSource {
private fun read(): Long = System.nanoTime()
private val zero: Long = System.nanoTime()
private fun read(): Long = System.nanoTime() - zero
override fun toString(): String = "TimeSource(System.nanoTime())"
actual override fun markNow(): DefaultTimeMark = DefaultTimeMark(read())
actual fun elapsedFrom(timeMark: DefaultTimeMark): Duration = (read() - timeMark.reading).nanoseconds
actual fun elapsedFrom(timeMark: DefaultTimeMark): Duration =
saturatingDiff(read(), timeMark.reading)
// may have questionable contract
actual fun adjustReading(timeMark: DefaultTimeMark, duration: Duration): DefaultTimeMark =
DefaultTimeMark(timeMark.reading + duration.inWholeNanoseconds)
DefaultTimeMark(saturatingAdd(timeMark.reading, duration))
}
@Suppress("ACTUAL_WITHOUT_EXPECT") // visibility
internal actual typealias DefaultTimeMarkReading = Long