canSuspend: Difference between revisions

Revision as of 14:47, 15 October 2021

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Description:: Returns true if sleep, uiSleep or waitUntil commands can be used in current scope. Usually when suspension is not allowed but used, for example when code is executed in unscheduled environment, the script engine would ignore any suspension command and throw error: "Suspending not allowed in this context". Using canSuspend command allows to detect the correct environment for the code.
Groups:: Program Flow

Example 1:: onEachFrame { systemChat str canSuspend; //false [] spawn {hint str canSuspend}; //true onEachFrame {}; };
Example 2:: Make sure the function code is always spawned even when called:mysleep = { if (!canSuspend) exitWith {_this spawn mysleep}; sleep _this; hint ("slept " + str _this); }; 5 call mysleep;

See also:: sleep uiSleep waitUntil call spawn execVM isRemoteExecuted isRemoteExecutedJIP remoteExecutedOwner isUIContext isGamePaused isGameFocused

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 |descr= Returns [[true]] if [[sleep]], [[uiSleep]] or [[waitUntil]] commands can be used in current scope. Usually when suspension is not allowed but used, for example when code is executed in [[Scheduler#Unscheduled_Environment|unscheduled environment]], the script engine would ignore any suspension command and throw error: "Suspending not allowed in this context". Using [[canSuspend]] command allows to detect the correct environment for the code.
-{{Feature | Informative |The definition of [[Scheduler#Scheduled_Environment|scheduled]] and [[Scheduler#Unscheduled_Environment|unscheduled environment]] is not the same as whether or not the script execution can or cannot be suspended. For example while .''sqs'' and .''fsm'' scripts are [[Scheduler#Scheduled_Environment|scheduled]] (i.e. added to the [[Scheduler|scheduler]]: [[diag_activeSQSScripts]], [[diag_activeMissionFSMs]]), they cannot use [[sleep]] or be suspended like [[execVM]] or [[spawn]] scripts can, therefore [[canSuspend]] for these types of scripts will return [[false]]. }}
 |s1= '''canSuspend'''