NEWTHREAD operator

The NEWTHREAD operator creates an action that executes another action in a new thread.

Syntax

NEWTHREAD action [CONNECTION connectionExpr]
NEWTHREAD action SCHEDULE [PERIOD periodExpr] [DELAY delayExpr]

Description

The NEWTHREAD operator creates an action that executes another action in a new thread. When the CONNECTION keyword is used, you can specify the connection which will be used during the action execution. There is also a second form of the NEWTHREAD operator for triggering an action using the scheduler. This form usage is determined by the presence of the SCHEDULE keyword.

Parameters

• action

  A context dependent operator that defines an action to be executed in the new thread.

• connectionExpr

  An expression which value is a property that returns an object of the SystemEvents.Connection class. Defines the connection for which this action will be performed.

• periodExpr

  An expression which value is a property that returns the length of the action repetition period in milliseconds. If not specified, the action will be executed once.

• delayExpr

  An expression which value is a property that returns the delay before the first execution of the action in milliseconds. If not specified, the action will be executed without delay.

Examples

testNewThread ()  {
    //Showing messages 'Message' to all
    FOR user(Connection conn) AND connectionStatus(conn) == ConnectionStatus.connectedConnection AND conn != currentConnection() DO {
        NEWTHREAD MESSAGE 'Message'; CONNECTION conn;
    }

    //Execution of the 'action' action with a frequency of 10 seconds and a delay of 5 seconds
    NEWTHREAD MESSAGE 'Hello World'; SCHEDULE PERIOD 10000 DELAY 5000;
}