Databases
StackOverflow2013
Postsdbo
POResourceClient hanging on LockSupport.park() on SunOS when connecting to Restlet Server
 

Note that there are some explanatory texts on larger screens.

plurals
  1. POResourceClient hanging on LockSupport.park() on SunOS when connecting to Restlet Server
    primarykey
    data
    text
    <p>I have a very simple Restlet server that I'm testing with a very simple Restlet client, all using Restlet-2.1.0 with the following extensions: xstream-1.4, jettison-1.3.</p> <p>Everything works well on my Mac, but when trying to run this on SunOS 5.10, the client hangs when connecting to the server. I can get a response when hitting the server from a browser, or from telnet, and also this same client works fine when connecting to any <em>other</em> resource other than the Restlet server.</p> <p>Looking at the thread dump I see this:</p> <pre><code>"main" prio=3 tid=0x08070800 nid=0x2 waiting on condition [0xfe0eb000] java.lang.Thread.State: WAITING (parking) at sun.misc.Unsafe.park(Native Method) - parking to wait for &lt;0xbbe827e8&gt; (a java.util.concurrent.CountDownLatch$Sync) at java.util.concurrent.locks.LockSupport.park(LockSupport.java:156) at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:811) at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:969) at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1281) at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:207) at org.restlet.engine.connector.ClientConnectionHelper.handle(ClientConnectionHelper.java:517) at org.restlet.Client.handle(Client.java:180) at org.restlet.Restlet.handle(Restlet.java:284) at com.redprairie.task.common.TempClient.main(TempClient.java:17) </code></pre> <p>I tried using both ClientResource.get() and Client.handle(Request) and both hang.</p> <p>Server code:</p> <pre><code>server = new Server(Protocol.HTTP, SERVER_PORT, TestServerResource.class); Context ctx = new Context(); server.setContext(ctx); server.start(); </code></pre> <p>Client code:</p> <pre><code>Request request = new Request(Method.GET, "http://localhost:8188/retrieve"); Client client = new Client(Protocol.HTTP); Response response = client.handle(request); response.getEntity().write(System.out); </code></pre> <p>Resource:</p> <pre><code>public class TestServerResource extends ServerResource { private static volatile Customer bernard = Customer.createSample(); @Get("json") public Customer retrieve() { System.out.println("GET request received"); return bernard; } } </code></pre> <p>The xstream and jettison extensions work perfectly to convert java objects to JSON and vice versa, and again, this works fine on my Mac OS X, but hangs on Sun...</p> <p>I am new to Restlet so perhaps I'm doing something wrong, but these are simple examples taken from available documentation.</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. This table or related slice is empty.
    1. USuser1735826
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
      singulars
      1. PTAnswer
    1. VO
      singulars
      1. POResourceClient hanging on LockSupport.park() on SunOS when connecting to Restlet Server
      1. This table or related slice is empty.
      1. VTUpMod
    1. This table or related slice is empty.
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload