Added missing org.simantics.db.{tests,testing} plug-ins.

[simantics/platform.git] / tests / org.simantics.db.tests / src / org / simantics / db / tests / performance / java / ThreadLocalTest.java

diff --git a/tests/org.simantics.db.tests/src/org/simantics/db/tests/performance/java/ThreadLocalTest.java b/tests/org.simantics.db.tests/src/org/simantics/db/tests/performance/java/ThreadLocalTest.java
new file mode 100644 (file)
index 0000000..e14618f
--- /dev/null
+++ b/tests/org.simantics.db.tests/src/org/simantics/db/tests/performance/java/ThreadLocalTest.java
@@ -0,0 +1,142 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.db.tests.performance.java;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.Semaphore;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.simantics.db.testing.base.TestCommonPerf;
+
+
+/**
+ *
+ */
+public class ThreadLocalTest extends TestCommonPerf {
+
+       public void test() throws Exception {
+
+               final ThreadLocal<AtomicInteger> local = new ThreadLocal<AtomicInteger>();
+               
+               class CounterThread extends Thread {
+
+                       final private Semaphore start;
+                       final private AtomicInteger counter;
+                       final private CountDownLatch latch;
+                       
+                       public CounterThread(Semaphore start, CountDownLatch latch, AtomicInteger counter) {
+                               this.start = start;
+                               this.counter = counter;
+                               this.latch = latch;
+                       }
+                       
+                       @Override
+                       public void run() {
+                               
+                               local.set(new AtomicInteger());
+                               
+                               try {
+                                       start.acquire();
+                               } catch (InterruptedException e) {
+                                       e.printStackTrace();
+                               }
+
+                               int work = 0;
+                               for(int i=0;i<1000000;i++) {
+                                       for(int j=0;j<100;j++) local.get().incrementAndGet();
+                               }
+                               
+                               latch.countDown();
+                               
+                               System.out.println("work=" + work);
+                               
+                       }
+                       
+               }
+               
+               CountDownLatch latch = new CountDownLatch(8);
+               AtomicInteger counter = new AtomicInteger(0);
+               Semaphore starter = new Semaphore(0);
+               
+               for(int i=0;i<8;i++) new CounterThread(starter, latch, counter).start();
+               
+               Thread.sleep(500);
+
+               starter.release(8);
+               long start = System.nanoTime();
+               latch.await();
+               long duration = System.nanoTime() - start;
+
+               System.out.println("counter=" + counter.get());
+               
+               System.out.println("Finished in " + 1e-9*duration + "s.");
+               
+       }
+       
+       public void test2() throws Exception {
+
+               class CounterThread extends Thread {
+
+                       final private Semaphore start;
+                       final private AtomicInteger counter;
+                       final private CountDownLatch latch;
+                       
+                       public CounterThread(Semaphore start, CountDownLatch latch, AtomicInteger counter) {
+                               this.start = start;
+                               this.counter = counter;
+                               this.latch = latch;
+                       }
+                       
+                       @Override
+                       public void run() {
+                               
+                               AtomicInteger ai = new AtomicInteger();
+                               
+                               try {
+                                       start.acquire();
+                               } catch (InterruptedException e) {
+                                       e.printStackTrace();
+                               }
+
+                               int work = 0;
+                               for(int i=0;i<1000000;i++) {
+                                       for(int j=0;j<100;j++) ai.incrementAndGet();
+                               }
+                               
+                               latch.countDown();
+                               
+                               System.out.println("work=" + work);
+                               
+                       }
+                       
+               }
+               
+               CountDownLatch latch = new CountDownLatch(8);
+               AtomicInteger counter = new AtomicInteger(0);
+               Semaphore starter = new Semaphore(0);
+               
+               for(int i=0;i<8;i++) new CounterThread(starter, latch, counter).start();
+               
+               Thread.sleep(500);
+
+               starter.release(8);
+               long start = System.nanoTime();
+               latch.await();
+               long duration = System.nanoTime() - start;
+
+               System.out.println("counter=" + counter.get());
+               
+               System.out.println("Finished in " + 1e-9*duration + "s.");
+               
+       }
+
+}