2.x: Benchmark X-Map-Z operators (#5914)

Author: akarnokd

src/jmh/java/io/reactivex/FlattenRangePerf.java

@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) 2016-present, RxJava Contributors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in
+ * compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License is
+ * distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See
+ * the License for the specific language governing permissions and limitations under the License.
+ */
+
+package io.reactivex;
+
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.infra.Blackhole;
+
+import io.reactivex.functions.Function;
+
+@BenchmarkMode(Mode.Throughput)
+@Warmup(iterations = 5)
+@Measurement(iterations = 5, time = 1, timeUnit = TimeUnit.SECONDS)
+@OutputTimeUnit(TimeUnit.SECONDS)
+@Fork(value = 1)
+@State(Scope.Thread)
+public class FlattenRangePerf {
+    @Param({ "1", "10", "100", "1000", "10000", "100000", "1000000" })
+    public int times;
+
+    Flowable<Integer> flowable;
+
+    Observable<Integer> observable;
+
+    @Setup
+    public void setup() {
+        Integer[] array = new Integer[times];
+        Arrays.fill(array, 777);
+
+        final Iterable<Integer> list = Arrays.asList(1, 2);
+
+        flowable = Flowable.fromArray(array).flatMapIterable(new Function<Integer, Iterable<Integer>>() {
+            @Override
+            public Iterable<Integer> apply(Integer v) throws Exception {
+                return list;
+            }
+        });
+
+        observable = Observable.fromArray(array).flatMapIterable(new Function<Integer, Iterable<Integer>>() {
+            @Override
+            public Iterable<Integer> apply(Integer v) throws Exception {
+                return list;
+            }
+        });
+    }
+
+    @Benchmark
+    public void flowable(Blackhole bh) {
+        flowable.subscribe(new PerfConsumer(bh));
+    }
+
+    @Benchmark
+    public void observable(Blackhole bh) {
+        observable.subscribe(new PerfConsumer(bh));
+    }
+}

src/jmh/java/io/reactivex/FlowableFlatMapCompletablePerf.java renamed to src/jmh/java/io/reactivex/FlowableFlatMapCompletableAsyncPerf.java

@@ -29,7 +29,7 @@
 @OutputTimeUnit(TimeUnit.SECONDS)
 @Fork(value = 1)
 @State(Scope.Thread)
-public class FlowableFlatMapCompletablePerf implements Action {
+public class FlowableFlatMapCompletableAsyncPerf implements Action {
 
     @Param({"1", "10", "100", "1000", "10000", "100000", "1000000"})
     int items;