Extensions.EventHandling.WaitForEvent
Classification
| Name | WaitForEvent |
| Short Description | Wait until an event is triggered and then continues processing |
| Class | Action |
| Extension | OTX EventHandling extension |
| Group | EventHandling related actions |
| Exceptions | - |
| Checker Rules | - |
| Standard Compliant | Yes |
OTL Syntax
EventHandling.WaitForEvent(EventSourceTerm, EventVariable);Description
The OTX WaitForEvent action shall block the thread of execution until it receives an event from one of its event sources. As soon as an event becomes available in one of the sources' event queues, WaitForEvent shall remove that event from the event source's queue and exit; the thread of execution continues to the next node.
If an event variable was specified, the event that caused WaitForEvent to exit is assigned to the variable.
Properties
| Name | Data Type | Class | Default | Cardinality | Description |
| Event | Event | Variable | - | [0..1] | This optional element represents an Event-type variable which shall receive the event that terminates this wait. |
| Source | EventSource | Term | - | [1..*] | This represents one or more event sources that the action shall wait for. The wait shall be terminated by the first source to fire an event. |
OTL Examples
Boolean Bool1 = false;
EventHandling.EventSource EventSource1;
EventSource1 = EventHandling.MonitorChangeEventSource(Bool1);
parallel
{
lane
{
Bool1 = true;
}
lane
{
EventHandling.WaitForEvent({EventSource1}, Event1);
}
}