Merge pull request #3353 from akarnokd/RangePerf2x

2.x: range perf + added missing header.

Author: akarnokd

src/perf/java/io/reactivex/InputWithIncrementingInteger.java

@@ -1,3 +1,16 @@
+/**
+ * Copyright 2015 Netflix, Inc.
+ * 
+ * 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.Iterator;

src/perf/java/io/reactivex/LatchedObserver.java

@@ -1,3 +1,16 @@
+/**
+ * Copyright 2015 Netflix, Inc.
+ * 
+ * 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.concurrent.CountDownLatch;

src/perf/java/io/reactivex/OperatorFlatMapPerf.java

@@ -1,3 +1,16 @@
+/**
+ * Copyright 2015 Netflix, Inc.
+ * 
+ * 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.concurrent.TimeUnit;

src/perf/java/io/reactivex/OperatorMergePerf.java

@@ -1,3 +1,16 @@
+/**
+ * Copyright 2015 Netflix, Inc.
+ * 
+ * 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.*;

src/perf/java/io/reactivex/RangePerf.java

@@ -0,0 +1,76 @@
+/**
+ * Copyright 2015 Netflix, Inc.
+ * 
+ * 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.concurrent.TimeUnit;
+
+import org.openjdk.jmh.annotations.*;
+import org.openjdk.jmh.infra.Blackhole;
+
+import io.reactivex.internal.schedulers.SingleScheduler;
+import io.reactivex.schedulers.Schedulers;
+
+@BenchmarkMode(Mode.Throughput)
+@Warmup(iterations = 5)
+@Measurement(iterations = 5, time = 5, timeUnit = TimeUnit.SECONDS)
+@OutputTimeUnit(TimeUnit.SECONDS)
+@Fork(value = 1)
+@State(Scope.Thread)
+public class RangePerf {
+    @Param({ "1", "1000", "1000000" })
+    public int times;
+    
+    Observable<Integer> range;
+    
+    Observable<Integer> rangeAsync;
+
+    Observable<Integer> rangeAsyncPipeline;
+
+    @Setup
+    public void setup() {
+        range = Observable.range(1, times);
+        
+        rangeAsync = range.observeOn(Schedulers.single());
+        
+        rangeAsyncPipeline = range.subscribeOn(new SingleScheduler()).observeOn(Schedulers.single());
+    }
+    
+    @Benchmark
+    public Object rangeSync(Blackhole bh) {
+        LatchedObserver<Integer> lo = new LatchedObserver<>(bh);
+        
+        range.subscribe(lo);
+        
+        return lo;
+    }
+
+    @Benchmark
+    public void rangeAsync(Blackhole bh) throws Exception {
+        LatchedObserver<Integer> lo = new LatchedObserver<>(bh);
+        
+        rangeAsync.subscribe(lo);
+        
+        lo.latch.await();
+    }
+
+    @Benchmark
+    public void rangePipeline(Blackhole bh) throws Exception {
+        LatchedObserver<Integer> lo = new LatchedObserver<>(bh);
+        
+        rangeAsyncPipeline.subscribe(lo);
+        
+        lo.latch.await();
+    }
+
+}