setTimeout throws 'Multi Threaded Access Requested' exception

[Sascha_L (Sascha)]

• Platform information:
  • Hardware: Intel x86-x64
  • OS: Windows 10 x64 Pro
  • Java Runtime Environment: Zulu JDK 11.54.23
  • openHAB version: openHAB 3.3.0.M1

Hi,

I have the following script:

test("1");
test("2");
test("3");

function test2(id) {
  console.info(id);
}

function test(id) {
  console.info(id);
  setTimeout(test2, 5.0*1000, id);
}

Log output is:

2022-03-01 15:41:08.280 [INFO ] [n.script.ui.SkriptRollladensteuerung] - 1
2022-03-01 15:41:08.343 [INFO ] [n.script.ui.SkriptRollladensteuerung] - 2
2022-03-01 15:41:08.343 [INFO ] [n.script.ui.SkriptRollladensteuerung] - 3
2022-03-01 15:41:13.328 [INFO ] [n.script.ui.SkriptRollladensteuerung] - 1
2022-03-01 15:41:13.359 [INFO ] [n.script.ui.SkriptRollladensteuerung] - 3
2022-03-01 15:41:13.359 [WARN ] [ore.internal.scheduler.SchedulerImpl] - Scheduled job failed and stopped
java.lang.IllegalStateException: Multi threaded access requested by thread Thread[OH-scheduler-213,5,main] but is not allowed for language(s) js.
	at com.oracle.truffle.polyglot.PolyglotEngineException.illegalState(PolyglotEngineException.java:129) ~[bundleFile:?]
	at com.oracle.truffle.polyglot.PolyglotContextImpl.throwDeniedThreadAccess(PolyglotContextImpl.java:940) ~[bundleFile:?]
	at com.oracle.truffle.polyglot.PolyglotContextImpl.checkAllThreadAccesses(PolyglotContextImpl.java:799) ~[bundleFile:?]
	at com.oracle.truffle.polyglot.PolyglotContextImpl.enterThreadChanged(PolyglotContextImpl.java:629) ~[bundleFile:?]
	at com.oracle.truffle.polyglot.PolyglotEngineImpl.enterCached(PolyglotEngineImpl.java:1885) ~[bundleFile:?]
	at com.oracle.truffle.polyglot.HostToGuestRootNode.execute(HostToGuestRootNode.java:112) ~[bundleFile:?]
	at com.oracle.truffle.api.impl.DefaultCallTarget.callDirectOrIndirect(DefaultCallTarget.java:85) ~[bundleFile:?]
	at com.oracle.truffle.api.impl.DefaultCallTarget.call(DefaultCallTarget.java:102) ~[bundleFile:?]
	at com.oracle.truffle.polyglot.PolyglotFunctionProxyHandler.invoke(PolyglotFunctionProxyHandler.java:154) ~[bundleFile:?]
	at com.sun.proxy.$Proxy228.apply(Unknown Source) ~[?:?]
	at org.openhab.core.model.script.actions.ScriptExecution.lambda$1(ScriptExecution.java:100) ~[bundleFile:?]
	at org.openhab.core.internal.scheduler.SchedulerImpl.lambda$12(SchedulerImpl.java:184) ~[?:?]
	at org.openhab.core.internal.scheduler.SchedulerImpl.lambda$1(SchedulerImpl.java:87) ~[?:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) [?:?]
	at java.util.concurrent.FutureTask.run(FutureTask.java:264) [?:?]
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304) [?:?]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) [?:?]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) [?:?]
	at java.lang.Thread.run(Thread.java:829) [?:?]
Caused by: com.oracle.truffle.api.TruffleStackTrace$LazyStackTrace

Why is this happening?

How can I create multiple timers in one script instead?

[rossko57]

See

Multi threaded access exception (rule using JavaScript/ECMAScript-2021, utilising a timer within an npm module)

Hi all, I have created a rule within the openHAB UI that is used by a IKEA Tradfri remote control. It increases/decreases a light’s brightness. The action part of the rule uses ECMAScript-2021 running on the GraalVM. As I would like to use the main part of the code by multiple remote controls, I put that into an npm module. The code does what it should do: It increases and decreases the brightness of a connected light item. But the log shows now and then an error message: 2022-01-09 14:49:02…

[Sascha_L (Sascha)]

Of course I already read that thread, but it doesn’t contain a solution and it seems they are talking about calling a script (with included timer) multiple times. My script runs only 1x at the same time, but should be able to create multiple timers. So I don’t understand why those timer callbacks are not running synchronously each one after another.

So I only allowed to use one timer per script?

Background:

Depending on the time and a lot of other states I want to control up to 8 (and in the future even more) roller shutters. Sometimes it happens, that one of those roller shutters not getting the signal to go up/down, so that I have to resend the signal.

My idea was to get the current roller shutter level, send the new value and after e.g. 5s I want to check if the new current value is different than the old current value, if not I resend the new value, otherwise everything is OK.

So if there is no solution to create multiple timers for each roller shutter, I have to create only one, and have to store all current values in a list and compare them with the new current values to determine which roller shutters needs to get the new value again.

[rossko57]

@Sascha_L

Of course I already read that thread,

Well, of course.

@Sascha_L

it doesn’t contain a solution

No, it doesn’t.

@Sascha_L

So I only allowed to use one timer per script?

That is the current situation, yes.
To overcome the limitation, use another rule scripting language temporarily.