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Minor navigation performance updates
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74 changes: 74 additions & 0 deletions
74
app/src/main/java/com/kylecorry/trail_sense/shared/debugging/Perf.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,74 @@ | ||
| package com.kylecorry.trail_sense.shared.debugging | ||
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| import kotlin.math.roundToInt | ||
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| object Perf { | ||
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| private val startTimes = mutableMapOf<String, Long>() | ||
| private val endTimes = mutableMapOf<String, Long>() | ||
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| fun start(tag: String) { | ||
| val startTime = System.nanoTime() | ||
| startTimes[tag] = startTime | ||
| } | ||
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| fun end(tag: String) { | ||
| val endTime = System.nanoTime() | ||
| endTimes[tag] = endTime | ||
| } | ||
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| inline fun trace(tag: String, block: () -> Unit) { | ||
| start(tag) | ||
| block() | ||
| end(tag) | ||
| } | ||
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| fun clear() { | ||
| startTimes.clear() | ||
| endTimes.clear() | ||
| } | ||
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| fun print() { | ||
| val parents = startTimes.map { getParent(it.key) }.filterNotNull().distinct() | ||
| val times = startTimes.keys.map { it to getTime(it) }.sortedByDescending { it.second } | ||
| for (parent in parents) { | ||
| val totalParentTime = getTime(parent)?.let { it / 1_000_000.0 } | ||
| println("$parent ($totalParentTime ms)") | ||
| println("-----") | ||
| for (entry in times) { | ||
| val tag = entry.first | ||
| if (getParent(tag) == parent) { | ||
| val ms = entry.second?.let { it / 1_000_000.0 } | ||
| val percent = totalParentTime?.let { ms?.div(it) }?.times(100)?.roundToInt() | ||
| println("${tag}: $ms ms ($percent %)") | ||
| } | ||
| } | ||
| println() | ||
| } | ||
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| // Display all times | ||
| for (tag in times.map { it.first }) { | ||
| val ms = getTime(tag)?.let { it / 1_000_000.0 } | ||
| println("${tag}: $ms ms") | ||
| } | ||
| } | ||
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| private fun getParent(tag: String): String? { | ||
| val myStartTime = startTimes[tag] ?: return null | ||
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| // Get the list of entries at the time the tag started | ||
| return startTimes.entries | ||
| .filter { it.value <= myStartTime } | ||
| .filter { (endTimes[it.key] ?: Long.MAX_VALUE) >= myStartTime } | ||
| .sortedBy { it.value } | ||
| .lastOrNull { it.key != tag }?.key | ||
| } | ||
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| private fun getTime(tag: String): Long? { | ||
| val start = startTimes[tag] ?: return null | ||
| val end = endTimes[tag] ?: return null | ||
| return end - start | ||
| } | ||
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| } |