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The Lock and Unlock methods are used to create a global critical section when synchronization of scripts started in different streams is required. The Lock method opens a critical section and the Unlock method closes it.

It is recommended to We recommend avoid using the Lock and Unlock methods.

Method call syntaxSyntax for method invocation:

 function Lock()

 function Unlock()

Example. When Macro On macro 1 starts, calculate the total amount of alarmed relays and sensors. Objects of each type are to must be calculated at the same time (in an individual script). The result is to must be stored written to “counter” the counter global variable.

Script 1:

 // Number of alarmed relays is calculated
var i = Number(0);
if (Event.SourceType == "MACRO" && Event.SourceId== "1" && Event.Action == "RUN")
{
var msg = CreateMsg();
msg.StringToMsg(GetObjectIds("GRELE"));
var objCount = msg.GetParam("id.count");
var k;
for(k= 0; k < objCount; k++)
if(GetObjectState("GRELE", msg.GetParam("id." + k))== "ALARM"){
    Lock();
     i = Itv_var("counter");
i++;
Itv_var("counter")=i;
Unlock();
}
}

...

Script 2:

 //Number of alarmed sensors is calculated
var i = Number(0);
 if (Event.SourceType == "MACRO" && Event.SourceId== "1" && Event.Action == "RUN")
{
var msg = CreateMsg();
msg.StringToMsg(GetObjectIds("GRAY"));
var objCount = msg.GetParam("id.count");
var k;
for(k = 0; k < objCount; k++)
if(GetObjectState("GRAY", msg.GetParam("id." + k))== "ALARMED"){
    Lock();
     i = Itv_var("counter");
i++;
Itv_var("counter")=i;
Unlock();
}
}