June 2018 Update

Task/Synchronous-concurrency/Kotlin/synchronous-concurrency.kotlin

@@ -0,0 +1,30 @@
+// version 1.1.51
+
+import java.util.concurrent.SynchronousQueue
+import kotlin.concurrent.thread
+import java.io.File
+
+val queue = SynchronousQueue<String>()
+
+const val EOT = "\u0004"  // end of transmission
+
+fun main(args: Array<String>) {
+    thread {
+        var count = 0
+
+        while (true) {
+             val line = queue.take()
+             if (line == EOT) {
+                queue.put(count.toString())
+                break
+             }
+             println(line)
+             count++
+        }
+    }
+
+    File("input.txt").forEachLine { line -> queue.put(line) }
+    queue.put(EOT)
+    val count = queue.take().toInt()
+    println("\nNumber of lines printed = $count")
+}