scalismo.utils.Benchmark.scala Maven / Gradle / Ivy
/*
* Copyright 2015 University of Basel, Graphics and Vision Research Group
*
* 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 scalismo.utils
import java.io.PrintStream
/**
* Utilility class to quickly determine how long certain operations take.
* Example:
* val i = calculate(something)
* becomes
* val i = benchmark(calculate(something))
*
* Available to call statically (Benchmark.benchmark) or as a mixin trait, for convenience.
*/
object Benchmark {
def benchmark[R](block: => R, desc: String = "duration", out: PrintStream = System.out): R = {
val start = System.currentTimeMillis()
val result = block
out.println(desc + ": " + (System.currentTimeMillis() - start) + " ms")
result
}
}
trait Benchmark {
def benchmark[R](block: => R, desc: String = "duration", out: PrintStream = System.out): R =
Benchmark.benchmark(block, desc, out)
}