1 files changed, 175 insertions, 0 deletions
diff --git a/src/junit/com/jogamp/common/util/TestWorkerThread01.java b/src/junit/com/jogamp/common/util/TestWorkerThread01.java
new file mode 100644
index 0000000..9ac7d75
--- /dev/null
+++ b/src/junit/com/jogamp/common/util/TestWorkerThread01.java
@@ -0,0 +1,175 @@
+/**
+ * Copyright 2023 JogAmp Community. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification, are
+ * permitted provided that the following conditions are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright notice, this list of
+ *       conditions and the following disclaimer.
+ *
+ *    2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *       of conditions and the following disclaimer in the documentation and/or other materials
+ *       provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JogAmp Community ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JogAmp Community OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The views and conclusions contained in the software and documentation are those of the
+ * authors and should not be interpreted as representing official policies, either expressed
+ * or implied, of JogAmp Community.
+ */
+
+package com.jogamp.common.util;
+
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+import java.time.Duration;
+import java.time.Instant;
+import java.time.temporal.ChronoUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+import com.jogamp.junit.util.SingletonJunitCase;
+
+import org.junit.FixMethodOrder;
+import org.junit.runners.MethodSorters;
+
+@FixMethodOrder(MethodSorters.NAME_ASCENDING)
+public class TestWorkerThread01 extends SingletonJunitCase {
+
+    static class Action implements WorkerThread.Callback {
+        final Duration sleep;
+        AtomicInteger counter = new AtomicInteger(0);
+        Instant tlast = Instant.now();
+        volatile Duration td = Duration.ZERO;
+
+        Action(final Duration sleep) {
+            this.sleep = sleep;
+        }
+
+        @Override
+        public void run() throws InterruptedException {
+            {
+                java.lang.Thread.sleep(sleep.toMillis());
+                // java.util.concurrent.locks.LockSupport.parkNanos(sleep.toNanos());
+            }
+            final Instant t1 = Instant.now();
+            td = Duration.between(tlast, t1);
+            System.err.println("action period "+td.toMillis()+"ms, counter "+counter.getAndIncrement());
+            tlast = t1;
+        }
+    }
+
+    static void checkStarted(final WorkerThread wt, final boolean isPaused) {
+        Assert.assertTrue(wt.isRunning());
+        Assert.assertEquals(!isPaused, wt.isActive());
+    }
+    static void checkStopped(final WorkerThread wt) {
+        Assert.assertFalse(wt.isRunning());
+        Assert.assertFalse(wt.isActive());
+    }
+    static void start(final WorkerThread wt) {
+        System.err.println("WT Start.0: "+wt);
+        wt.start();
+        System.err.println("WT Start.X: "+wt);
+    }
+    static void stop(final WorkerThread wt) {
+        System.err.println("WT Stop.0: "+wt);
+        wt.stop();
+        System.err.println("WT Stop.X: "+wt);
+    }
+    static void pause(final WorkerThread wt, final boolean wait) {
+        System.err.println("WT Pause.0: wait "+wait+", "+wt);
+        wt.pause(wait);
+        System.err.println("WT Pause.X: wait "+wait+", "+wt);
+    }
+    static void resume(final WorkerThread wt) {
+        System.err.println("WT Resume.0: "+wt);
+        wt.resume();
+        System.err.println("WT Resume.X: "+wt);
+    }
+
+    public void testAction(final long periodMS, final long actionMS) throws IOException, InterruptedException, InvocationTargetException {
+        final Action action = new Action( 0 < actionMS ? Duration.of(actionMS, ChronoUnit.MILLIS) : Duration.ZERO);
+        final WorkerThread wt =new WorkerThread(Duration.of(periodMS, ChronoUnit.MILLIS), true /* daemonThread */, action);
+        final long maxPeriodMS = Math.max(periodMS, actionMS);
+        int counterA = action.counter.get();
+        checkStopped(wt);
+        start(wt);
+        checkStarted(wt, false /* isPaused */);
+        Thread.sleep(maxPeriodMS*3);
+        {
+            final Duration td = action.td;
+            final Duration wt_slept = wt.getSleptDuration();
+            final long actionMS_d = td.minus( wt_slept ).toMillis() - actionMS;
+            System.err.println("actionMS_d "+actionMS_d+" = td "+td.toMillis()+"ms - wt_slept "+wt_slept.toMillis()+"ms - actionMS "+actionMS+"ms");
+            Assert.assertTrue(Math.abs(actionMS_d) < 4);
+        }
+
+        checkStarted(wt, false /* isPaused */);
+        stop(wt);
+        checkStopped(wt);
+        int counterB = action.counter.get();
+        Assert.assertTrue(counterB > counterA);
+
+        counterA = action.counter.get();
+        checkStopped(wt);
+        start(wt);
+        checkStarted(wt, false /* isPaused */);
+        Thread.sleep(maxPeriodMS*3);
+
+        checkStarted(wt, false /* isPaused */);
+        pause(wt, true /* wait */);
+        checkStarted(wt, true /* isPaused */);
+        counterB = action.counter.get();
+        Assert.assertTrue(counterB > counterA);
+
+        counterA = action.counter.get();
+        Assert.assertTrue(counterB == counterA);
+        Thread.sleep(maxPeriodMS);
+        resume(wt);
+        checkStarted(wt, false /* isPaused */);
+        Thread.sleep(maxPeriodMS*3);
+
+        checkStarted(wt, false /* isPaused */);
+        stop(wt);
+        checkStopped(wt);
+        counterB = action.counter.get();
+        Assert.assertTrue(counterB > counterA);
+    }
+
+    @Test
+    public void test01ZeroAction() throws IOException, InterruptedException, InvocationTargetException {
+        testAction(16 /* periodMS */, 0 /* actionMS*/);
+    }
+
+    @Test
+    public void test02MidAction() throws IOException, InterruptedException, InvocationTargetException {
+        testAction(16 /* periodMS */, 8 /* actionMS*/);
+    }
+
+    @Test
+    public void test03HeavyAction() throws IOException, InterruptedException, InvocationTargetException {
+        testAction(16 /* periodMS */, 20 /* actionMS*/);
+    }
+
+    @Test
+    public void test03ZeroMidAction() throws IOException, InterruptedException, InvocationTargetException {
+        testAction(0 /* periodMS */, 8 /* actionMS*/);
+    }
+
+    public static void main(final String args[]) throws IOException {
+        final String tstname = TestWorkerThread01.class.getName();
+        org.junit.runner.JUnitCore.main(tstname);
+    }
+
+}