ReturnToMaster (Daemon subroutine)
Return control to the master thread (Daemon class)
[Introduced in Sirius Mods 8.1]
This method returns control from a daemon thread to its master thread inside a User Language request.
Syntax
%(Daemon):ReturnToMaster
Syntax terms
| %(Daemon) | The class name in parentheses denotes a shared method. ReturnToMaster can also be invoked via a Daemon object variable, which may be Null. |
|---|
Usage notes
- If not issued on a daemon thread, ReturnToMaster results in a request cancellation.
- A daemon can return objects to the master thread before invoking ReturnToMaster with the ReturnObject and ReturnInfoObject methods.
- The master thread would return control with the Continue, ContinueAsynchronously, or ContinueIndependently method. These methods can be used to pass an object to the daemon thread.
- As with the Run methods, a daemon thread can retrieve the object passed to it by a Continue method with the GetInputObject method.
Examples
In the following silly example, a daemon thread adds numbers passed to it in an XmlDoc by the master thread and returns the result in another XmlDoc:
b %doc is object xmlDoc %i is float %nodes is object xmlNodelist %result is float repeat forever %doc = new %doc:addElement('result', %result) %(daemon):returnToMaster %(daemon):getInputObject(%doc) %nodes = %doc:selectNodes('/sum/number') if %nodes:count eq 0 then loop end; end if %result = 0 for %i from 1 to %nodes:count %result = %nodes(%i):value end for end repeat end
See also