<ParallelTask variable>.Wait (Function)

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WLanguage functions

Standard functions

Process management functions

Parallel tasks

Prefix syntax

Wait

Presentation

Example

See also

<ParallelTask variable>.Wait (Function)

In french: <Variable TâcheParallèle>.Attend

Waits for the end of execution of a parallel task.

Example

// Triggers the execution of a task and waits for the task to be ended
t is ParallelTask = ParallelTaskExecute(Proc)
t.Wait()

Syntax

<Result> = <Task>.Wait([<Maximum duration>])

<Result>: Boolean

True if the task is ended properly.
False if the task is not ended properly. For example:
the maximum task duration has been reached,
the task was canceled.

<Task>: ParallelTask variable

Name of the variable of type ParallelTask to be used.

<Maximum duration>: Optional integer or optional Duration

Maximum duration for running the task, expressed in hundredths of a second.
If this parameter is specified, <ParallelTask variable>.Wait locks the application until the task execution is ended or until the maximum duration is reached.
If this parameter is not specified, <ParallelTask variable>.Wait locks the application until the task execution is ended.
This parameter can correspond to:
an integer corresponding to the number of hundredths of a second,
a Duration variable,
the indication of duration in clear ('1 s' or '10 ms' for example).

Remarks

If function <ParallelTask variable>.Wait is called from main the thread, the task to be waited for must not run in main the thread. Otherwise, a lock will occur. Indeed, the main thread cannot wait for the end of the task and run it at the same time.

A WLanguage error signals the problem before the lock occurs.

Component: wd270vm.dll