https://sourceforge.net/p/thimble/wiki/Sequential%2520Task%2520Tutorial/Recent changes to Sequential Task TutorialenSun, 09 Dec 2012 16:15:03 -0000https://sourceforge.net/p/thimble/wiki/Sequential%2520Task%2520Tutorial/<pre>--- v1 +++ v2 @@ -1,4 +1,8 @@ This tutorial will demonstrate how a ThimbleExecutor executes sequential tasks. The code below runs a sequential task in a 4-thread ThimbleExecutor. + +[TOC] + +## ThimbleExecutor version ~~~~~ :::java @@ -74,6 +78,9 @@ HelloWorld (context 2) 8 HelloWorld (context 2) 9 ~~~~~ + + +## Standard Executor version Compare this with using a standard multi-thread executor </pre>Ramon ServadeiSun, 09 Dec 2012 16:15:03 -0000https://sourceforge.netcf1314c1c2f66629dcbf7d37699b306942d59c11https://sourceforge.net/p/thimble/wiki/Sequential%2520Task%2520Tutorial/This tutorial will demonstrate how a ThimbleExecutor executes sequential tasks. The code below runs a sequential task in a 4-thread ThimbleExecutor. ~~~~~ :::java public class TestSequential { public static void main(String[] args) throws Exception { Executor executor = new ThimbleExecutor(4); final int count = 10; final CountDownLatch latch = new CountDownLatch(count * 2); for (int i = 0; i < count; i++) { final int myCount = i; executor.execute(new ISequentialRunnable() { @Override public void run() { System.out.println("HelloWorld (context 1) " + myCount); latch.countDown(); } @Override public Object context() { return "context1"; } }); executor.execute(new ISequentialRunnable() { @Override public void run() { System.out.println("HelloWorld (context 2) " + myCount); latch.countDown(); } @Override public Object context() { return "context2"; } }); } latch.await(); } } ~~~~~ The output demonstrates that the tasks are executed in order. Notice that there is some inter-leaving for the execution of the sequential tasks between context 1 and context 2 but that both contexts have their tasks executed in sequence. ~~~~~ HelloWorld (context 1) 0 HelloWorld (context 1) 1 HelloWorld (context 2) 0 HelloWorld (context 1) 2 HelloWorld (context 2) 1 HelloWorld (context 1) 3 HelloWorld (context 2) 2 HelloWorld (context 1) 4 HelloWorld (context 2) 3 HelloWorld (context 1) 5 HelloWorld (context 2) 4 HelloWorld (context 1) 6 HelloWorld (context 2) 5 HelloWorld (context 1) 7 HelloWorld (context 2) 6 HelloWorld (context 1) 8 HelloWorld (context 2) 7 HelloWorld (context 1) 9 HelloWorld (context 2) 8 HelloWorld (context 2) 9 ~~~~~ Compare this with using a standard multi-thread executor ~~~~~ :::java public class TestSequentialWithStandardExecutor { public static void main(String[] args) throws Exception { Executor executor = Executors.newFixedThreadPool(4); final int count = 10; final CountDownLatch latch = new CountDownLatch(count * 2); for (int i = 0; i < count; i++) { final int myCount = i; executor.execute(new ISequentialRunnable() { @Override public void run() { System.out.println("HelloWorld (context 1) " + myCount); latch.countDown(); } @Override public Object context() { return "context1"; } }); executor.execute(new ISequentialRunnable() { @Override public void run() { System.out.println("HelloWorld (context 2) " + myCount); latch.countDown(); } @Override public Object context() { return "context2"; } }); } latch.await(); } } ~~~~~ The output shows that the tasks are executed non-sequentially. ~~~~~ HelloWorld (context 1) 0 HelloWorld (context 2) 0 HelloWorld (context 1) 2 HelloWorld (context 1) 3 HelloWorld (context 2) 2 HelloWorld (context 1) 4 HelloWorld (context 2) 4 HelloWorld (context 2) 1 HelloWorld (context 2) 5 HelloWorld (context 2) 3 HelloWorld (context 1) 6 HelloWorld (context 1) 5 HelloWorld (context 2) 7 HelloWorld (context 1) 8 HelloWorld (context 1) 1 HelloWorld (context 2) 8 HelloWorld (context 1) 7 HelloWorld (context 2) 6 HelloWorld (context 2) 9 HelloWorld (context 1) 9 ~~~~~ ## Conclusion This demonstrates that a single ThimbleExecutor could be used to handle sequential tasks. In situations where tasks for multiple contexts need to be executed in sequence, rather than having a single-thread per context, a single multi-thread ThimbleExecutor can be used.Ramon ServadeiSun, 09 Dec 2012 16:09:30 -0000https://sourceforge.net7047f11e535501cc64ff4148407b6a11b6a764a5