Add jmh

build.sbt

@@ -7,4 +7,10 @@ scalaVersion := "2.12.5"
 resolvers += Resolver.sonatypeRepo("snapshots")
 resolvers += Resolver.sonatypeRepo("releases")
 
-libraryDependencies += "net.lingala.zip4j" % "zip4j" % "1.3.2"
+libraryDependencies ++= Seq(
+  "net.lingala.zip4j" % "zip4j" % "1.3.2",
+  "org.openjdk.jmh" % "jmh-core" % "1.21",
+  "org.openjdk.jmh" % "jmh-generator-annprocess" % "1.21"
+)
+
+enablePlugins(JmhPlugin)

project/plugins.sbt

@@ -0,0 +1 @@
+addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.3.4")

src/main/scala/org/virtuslab/zipops/bench/Bench.scala

@@ -0,0 +1,13 @@
+package org.virtuslab.zipops.bench
+
+import org.openjdk.jmh.annotations.Benchmark
+import org.openjdk.jmh.infra.Blackhole
+
+object Bench {
+
+  @Benchmark
+  def benchmark(hole: Blackhole): Unit = {
+    hole.consume(5 * 7)
+  }
+
+}