A standalone Kotlin script that shows how to do custom heap analysis work with Shark, the heap parsing library that powers LeakCanary (see https://square.github.io/leakcanary/shark)

shark-custom-script.main.kts

#!/usr/bin/env -S JAVA_OPTS="-Xmx16g" kotlin

// In order to analyze big heaps you might need to modify above `-Xmx16g` Java option.

// Before running this script, install Kotlin with `brew install kotlin`
// Then run this with `kotlin shark-custom-script.main.kts`
// Edit this script in the latest Android Studio or IntelliJ IDEA releases to get dependency import and auto completion.

@file:Repository("https://repo.maven.apache.org/maven2/")
@file:DependsOn("com.squareup.leakcanary:shark-android:2.13")

import shark.HeapAnalyzer
import shark.HprofHeapGraph.Companion.openHeapGraph
import java.io.File

var pid: Long = ProcessHandle.current().pid()
println("Process ID: $pid")

val heapDumpFile: File = TODO("Replace this with hprof file") // = File("PATH_TO_HPROF")

val heapAnalyzer = HeapAnalyzer(listener = { step ->
    println("Analysis in progress, working on: ${step.name}")
})

heapDumpFile.openHeapGraph(
    proguardMapping = null
).use { graph ->
    println("Finding Mapbox CameraAnimator which are not skipped.")
    println("#####")
    val cameraAnimationsPluginImplClass =
        graph.findClassByName("com.mapbox.maps.plugin.animation.CameraAnimationsPluginImpl")!!.instances.first()

    // Animators HashSet
    val animatorsInstance = cameraAnimationsPluginImplClass.readField(
        cameraAnimationsPluginImplClass.instanceClassName,
        "animators"
    )!!.valueAsInstance!!
    animatorsInstance.readFields().forEach { field ->
        println("animatorsField field ${field.name} -> ${field.value.asObject}")
    }

    // The HashMap within the HashSet
    val animatorsMapInstance =
        animatorsInstance.readField(animatorsInstance.instanceClassName, "map")!!.valueAsInstance!!
    animatorsMapInstance.readFields().forEach { field ->
        println("animatorsMapInstance field ${field.name} -> ${field.value.asObject}")
    }

    // Get all `HashMap$Node`s from the HashMap
    val nonNullAnimatorsNodes = animatorsMapInstance.readField(
        animatorsMapInstance.instanceClassName,
        "table"
    )!!.valueAsObjectArray!!.readElements().filter { it.isNonNullReference }
    println("Found ${nonNullAnimatorsNodes.count()} `animators` entries")

    // Find animators which "skipped" flag is false and also those not within Mapbox package
    nonNullAnimatorsNodes.forEach { element ->
        val instance = element.asObject!!.asInstance!!
        val animatorField = instance.readField("java.util.HashMap\$Node", "key")!!.valueAsInstance!!
        val animatorClassName = animatorField.instanceClassName
        if (animatorClassName.startsWith("com.mapbox.maps.")) {
            val skipped = animatorField.readField(
                "com.mapbox.maps.plugin.animation.animator.CameraAnimator",
                "skipped"
            )!!.value.asBoolean!!
            if (!skipped) {
                println("Found non-skipped animator ${animatorField.objectId} $animatorClassName")
//                animatorField.readFields().forEach { field ->
//                    println("animatorsMapInstance field ${field.name} -> ${field.value.asObject}")
//                }
            }
        } else {
            println("Found non-mapbox animator $animatorClassName")
        }
    }
}