Benchmark for objects allocations (#4216)

performance/ring/src/main/kotlin/main.kt

@@ -26,6 +26,7 @@ class RingLauncher : Launcher() {
             mutableMapOf(
                     "AbstractMethod.sortStrings" to BenchmarkEntryWithInit.create(::AbstractMethodBenchmark, { sortStrings() }),
                     "AbstractMethod.sortStringsWithComparator" to BenchmarkEntryWithInit.create(::AbstractMethodBenchmark, { sortStringsWithComparator() }),
+                    "AllocationBenchmark.allocateObjects" to BenchmarkEntryWithInit.create(::AllocationBenchmark, { allocateObjects() }),
                     "ClassArray.copy" to BenchmarkEntryWithInit.create(::ClassArrayBenchmark, { copy() }),
                     "ClassArray.copyManual" to BenchmarkEntryWithInit.create(::ClassArrayBenchmark, { copyManual() }),
                     "ClassArray.filterAndCount" to BenchmarkEntryWithInit.create(::ClassArrayBenchmark, { filterAndCount() }),

performance/ring/src/main/kotlin/org/jetbrains/ring/AllocationBenchmark.kt

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the LICENSE file.
+ */
+
+package org.jetbrains.ring
+
+var counter = 0
+
+open class AllocationBenchmark {
+
+    class MyClass {
+        fun inc() {
+            counter++
+        }
+    }
+
+    //Benchmark
+    fun allocateObjects() {
+        repeat(BENCHMARK_SIZE) {
+            MyClass().inc()
+        }
+    }
+
+}