[K/N] More work to do for weak-sweeper in weak ref benchmarks

Merge-request: KT-MR-11899
Merged-by: Alexey Glushko <aleksei.glushko@jetbrains.com>

kotlin-native/performance/swiftinterop/swiftSrc/weakRefBenchmarks.swift

@@ -7,7 +7,6 @@ import Foundation
 import benchmark
 
 private let REPEAT_COUNT = 10000
-private let REFERENCES_COUNT = 3
 
 private class ReferenceWrapper {
     private weak var weakRef: KotlinData?
@@ -49,6 +48,8 @@ private func deadReferenceWrapper() -> ReferenceWrapper {
 }
 
 class WeakRefBenchmark {
+    private let weight = (0..<10_000).map { _ in ReferenceWrapper() }
+
     private let aliveRef = ReferenceWrapper()
     private let deadRef = deadReferenceWrapper()
 
@@ -78,4 +79,8 @@ class WeakRefBenchmark {
         let counter = ref.stress()
         Blackhole.companion.consume(value: counter)
     }
+
+    func clean() {
+        weight.forEach { $0.dispose() }
+    }
 }