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package scala.collection.parallel.benchmarks
package hashtries
import collection.immutable.{HashMap => HashTrie}
import collection.mutable.HashMap
class MultipleCombine(val size: Int, val parallelism: Int, val runWhat: String) extends Bench with IntInit {
var combines = 10
var thattries = new Array[HashTrie[Int, Int]](combines)
def initTries = for (r <- 0 until combines) {
var thattrie = new HashTrie[Int, Int]
for (i <- ((r + 1) * size) until ((r + 2) * size)) thattrie += ((i, i))
thattries(r) = thattrie
}
initTries
val thatmaps = new Array[HashMap[Int, Int]](10)
def initMaps = for (r <- 0 until combines) {
var thatmap = new HashMap[Int, Int]
for (i <- ((r + 1) * size) until ((r + 2) * size)) thatmap += ((i, i))
thatmaps(r) = thatmap
}
initMaps
override def repetitionsPerRun = 25
def runpar = throw new UnsupportedOperationException
def runseq = runhashtrie
def runhashtrie = {
initHashTrie
var trie = hashtrie
for (r <- 0 until combines) trie = trie merge thattries(r)
}
def runappendtrie = {
initHashTrie
var trie = hashtrie
for (r <- 0 until combines) trie = trie ++ thattries(r)
}
def runhashmap = {
initHashMap
var map = hashmap
for (r <- 0 until combines) map = map ++ thatmaps(r)
}
def rundestructive = {
initHashTrie
var trie = hashtrie
for (r <- 0 until combines) trie = trie merge thattries(r)
}
def companion = MultipleCombine
def comparisonMap = Map("hashtrie" -> runhashtrie _, "hashmap" -> runhashmap _, "appendtrie" -> runappendtrie _, "destruct" -> rundestructive _)
override def reset = runWhat match {
case "appendtrie" => initHashTrie
case "destruct" => initHashTrie
case _ => super.reset
}
}
object MultipleCombine extends BenchCompanion {
def collectionName = "HashTrie"
def benchName = "multi-combine";
def apply(sz: Int, p: Int, what: String) = new MultipleCombine(sz, p, what)
override def defaultSize = 5000
}
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