kshark.FilteringLeakingObjectFinder.kt Maven / Gradle / Ivy

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package kshark

/**
 * Finds the objects that are leaking by scanning all objects in the heap dump
 * and delegating the decision to a list of [FilteringLeakingObjectFinder.LeakingObjectFilter]
 */
class FilteringLeakingObjectFinder(private val filters: List) :
  LeakingObjectFinder {

  /**
   * Filter to be passed to the [FilteringLeakingObjectFinder] constructor.
   */
  interface LeakingObjectFilter {
    /**
     * Returns whether the passed in [heapObject] is leaking. This should only return true
     * when we're 100% sure the passed in [heapObject] should not be in memory anymore.
     */
    fun isLeakingObject(heapObject: HeapObject): Boolean
  }

  override fun findLeakingObjectIds(graph: HeapGraph): Set {
    return graph.objects
      .filter { heapObject ->
        filters.any { filter ->
          filter.isLeakingObject(heapObject)
        }
      }
      .map { it.objectId }
      .toSet()
  }
}