thread pooling actor update, updated kotlin lib

Former-commit-id: 17dc75ada5a6652fa555c3a34214704897ca9afe
Former-commit-id: 75ddbe0187f978958cc5c1208a0cfb85bfdcdfaf

src/net/torvald/terrarum/concurrent/ThreadPool.kt

@@ -0,0 +1,37 @@
+package net.torvald.terrarum.concurrent
+
+import net.torvald.terrarum.Terrarum
+import java.util.*
+
+/**
+ * Created by minjaesong on 16-05-25.
+ */
+object ThreadPool {
+    private val pool = Array<Thread>(Terrarum.CORES, { Thread() })
+    val POOL_SIZE = Terrarum.CORES
+
+    /**
+     * @param prefix : will name each thread as "Foo-1"
+     * @param runnables : vararg
+     */
+    fun mapAll(prefix: String, vararg runnables: Runnable) {
+        if (runnables.size != Terrarum.CORES)
+            throw RuntimeException("Thread pool argument size mismatch. If you have four cores, you must use four runnables.")
+
+        for (i in 0..runnables.size)
+            pool[i] = Thread(runnables[i], "$prefix-$i")
+    }
+
+    /**
+     * @param index of the runnable
+     * @param runnable
+     * @param prefix Will name each thread like "Foo-1", "Foo-2", etc.
+     */
+    fun map(index: Int, runnable: Runnable, prefix: String) {
+        pool[index] = Thread(runnable, "$prefix-$index")
+    }
+
+    fun startAll() {
+        pool.forEach { it.start() }
+    }
+}