Groovy example source code file (bench.groovy)

This example Groovy source code file (bench.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

benchmark, file, file, groovy, groovy, groovy_lib, groovy_lib, java_home, string, string

The Groovy bench.groovy source code

import org.codehaus.groovy.tools.FileSystemCompiler as Compiler


def benchData = [
    hello           :   [1],
    ackermann       :   [5, 6, 7, 8],
/*    ary             :   [1],
    binarytrees     :   [1],
    chameneos       :   [1],
    echo            :   [1],
    except          :   [1],
    fannkuch        :   [1],
    fannkuchredux   :   [1],
    fasta           :   [1],*/
    fibo            :   [30, 31, 32, 33, 34],
/*    harmonic        :   [1],
    hash            :   [1],
    hash2           :   [1],
    heapsort        :   [1],
    knucleotide     :   [1],
    lists           :   [1],
    magicsquares    :   [1],
    mandelbrot      :   [1],
    matrix          :   [1],
    message         :   [1],
    meteor          :   [1],
    methcall        :   [1],
    moments         :   [1],
    nbody           :   [1],
    nestedloop      :   [1],
    nsieve          :   [1],
    nsievebits      :   [1],
    objinst         :   [1],
    partialsums     :   [1],
    pidigits        :   [1],
    process         :   [1],
    prodcons        :   [1],
    random          :   [1],
    raytracer       :   [1],
    recursive       :   [1],
    regexdna        :   [1],
    revcomp         :   [1],
    sieve           :   [1],
    spectralnorm    :   [1],
    spellcheck      :   [1],
    strcat          :   [1],
    sumcol          :   [1],
    takfp           :   [1],
    threadring      :   [1],
    wc              :   [1],
    wordfreq        :   [1],*/
]

setGroovyLib()

horizontalBreak()
println "Groovy benchmarking test"
showJavaVersion()
println "Groovy lib: $GROOVY_LIB"
horizontalBreak()
benchData.each { bench, input ->
    println "Benchmark $bench"
    [".java", ".groovy"].each { ending ->
        println("\t$bench$ending :")
        
        boolean exists = prepare(bench, ending)
        if (exists) {
            execBenchmark(bench, input)
        } else {
            println "skipped"
        }
        cleanFolder()
    }
    horizontalBreak()
}

void horizontalBreak() {
    println "-" * 80
}

boolean prepare(bench, ending) {
    // copy file to exec folder it it exists
    def orig = new File("bench/$bench$ending")
    if (!orig.exists()) return false;

    // compile file using groovy compiler
    // in = orig, out = exec
    Compiler.main("-j","-d", "exec", orig.absolutePath)
    true
}

void cleanFolder(){
    def dir = new File("exec/")
    dir.eachFile { file -> file.delete() }
}

String javaHome() {
    def path = System.getenv("JAVA_HOME")
    if (!path.endsWith("$File.separatorChar")) path += File.separatorChar
    return path
}

String javaCommand() {
    javaHome() + "bin/java"
}

void showJavaVersion() {
    def p = [javaCommand(), "-version"].execute()
    p.consumeProcessErrorStream(System.out)
    p.consumeProcessOutputStream(System.out)
    p.waitForOrKill(10 * 60 * 1000)
}

void execBenchmark(bench, input) {
    input.each { param -> 
        def cp = "./exec/" + File.pathSeparatorChar
        cp += GROOVY_LIB + File.pathSeparatorChar
        cp += "../target/lib/runtime/*"

        def time1 = System.nanoTime()

        print "\t\trunning  "
        20.times { n->
            printProgress(n)
            def p = [javaCommand(), "-cp", cp, bench, param].execute()
            p.consumeProcessOutputStream(null)
            p.consumeProcessErrorStream(System.err)
            p.waitForOrKill(10 * 60  *1000)
        }
        def time2 = System.nanoTime()
        long td = (time2-time1) / 1000000 / 20
        print "\b" * 9
        println "time ($param) = $td"
    }
}

void printProgress(it) {
  def n = it % 4
  if (n==0) print "\b/"
  if (n==1) print "\b-"
  if (n==2) print "\b\\"
  if (n==3) print "\b-"
}

void setGroovyLib() {
    def f = new File("../target/dist")
    f.eachFile { entry ->
        def name = entry.name
        if (!name.startsWith("groovy-all")) return
        if (name.contains("sources")) return
        GROOVY_LIB = entry.absolutePath
    }
}