execute code from different threads

[SimonCropp]

Any ideas on this one?

var engine = new MsieJsEngine(JsEngineMode.Auto);

//this works
engine.Execute("var foo = 'ddd';");

//this doesnt
var thread = new Thread(() => engine.Execute("var foobar = 'ddd';"));
thread .Start();
Thread.Sleep(10000);

[Taritsyn]

Hello, Simon!

You can't do this! Everything should be run in the one thread.
I recommend you to read the article «JsRT: Runtimes».

[SimonCropp]

thanks. would u take a PR that throws a more useful exception when people attempt this?

[Taritsyn]

What a error message you get?

[SimonCropp]

System.Runtime.InteropServices.COMException was unhandled
  HResult=-2147418113
  Message=Catastrophic failure (Exception from HRESULT: 0x8000FFFF (E_UNEXPECTED))
  Source=MsieJavaScriptEngine
  ErrorCode=-2147418113
  StackTrace:
       at MsieJavaScriptEngine.ActiveScript.IActiveScriptParse64.ParseScriptText(String code, String itemName, Object context, String delimiter, IntPtr pSourceContextCookie, UInt32 startingLineNumber, ScriptTextFlags flags, Object& result, EXCEPINFO& exceptionInfo)
       at MsieJavaScriptEngine.ActiveScript.ActiveScriptParseWrapper.ParseScriptText(String code, String itemName, Object context, String delimiter, IntPtr sourceContextCookie, UInt32 startingLineNumber, ScriptTextFlags flags)
       at MsieJavaScriptEngine.ActiveScript.ActiveScriptSiteWrapper.ExecuteScriptText(String code, Boolean isExpression)
       at MsieJavaScriptEngine.ActiveScript.ActiveScriptJsEngineBase.Execute(String code)
       at MsieJavaScriptEngine.MsieJsEngine.Execute(String code)

[SimonCropp]

It would be better to have an exception

You cannot execute this method on a different thread from which it was constructed.

[Taritsyn]

Hello, Simon!

In MSIE JavaScript Engine version 1.4.0 fixed this error. Now in the ChakraActiveScript and Classic modes method calls is performed on single thread.