|
|
|
|
|
|
|
|
|
|
ParallelTaskExecuteAfter (Function) In french: TâcheParallèleExécuteAprès Indicates a continuation parallel task that will be run when the specified parallel task is completed.
t1 is ParallelTask = ParallelTaskExecute(Proc1)
ParallelTaskExecuteAfter(t1, ProcContinuation)
Syntax
Indicating a procedure that will be run after a previous task Hide the details
<Result> = ParallelTaskExecuteAfter(<Previous task> , <Continuation procedure> [, <Parameters> [, <Options>]])
<Result>: ParallelTask variable ParallelTask variable corresponding to the continuation task. <Previous task>: ParallelTask variable Name of the ParallelTask variable corresponding to the previous task. <Continuation procedure>: Character string or Procedure variable Procedure to run after the specified previous task. This parameter can correspond to: - the name of the WLanguage procedure to run.
- the name of the Procedure variable corresponding to the continuation procedure to run.
<Parameters>: List of values enclosed in brackets, separated by commas Parameters of the procedure to be executed. This list of parameters has the following format: (<Parameter 1>, ..., <Parameter N>) where: - <Parameter 1> is the first parameter of the procedure.
- ...
- <Parameter N> is the nth parameter of the procedure.
Note: The ReturnValuePreviousTask keyword is used to pass the return value(s) of the previous task as a parameter to the continuation procedure. <Options>: Optional Integer constant (or combination of constants) Options of task to run:
| | ptoDelayedCopyHFSQLContext
(Default value) | Triggers a light copy of HFSQL context during the first access to the HFSQL data. | | ptoFullCopyHFSQLContext | Triggers the immediate copy of the current HFSQL context.
Recommended, for example, if the parallel task must take into account the current positions in the files and queries of the context of the caller. | | ptoLightCopyHFSQLContext | Triggers the immediate copy of a part of the current HFSQL context.
Only the directories containing the data files in HFSQL Classic mode and/or the connections in HFSQL Client/Server mode are stored. | | ptoMainThread | Runs the task in the main thread.
This constant can be combined with one of the other constants. |
Indicating a described task that will be run after a previous task Hide the details
<Result> = ParallelTaskExecuteAfter(<Previous task> , <Continuation task>)
<Result>: ParallelTask variable ParallelTask variable corresponding to the continuation task. <Previous task>: ParallelTask variable Name of the ParallelTask variable corresponding to the previous task. <Continuation task>: ParallelTask variable Name of the ParallelTask variable corresponding to the task that will be run after.
Describing a task that will be run after a previous task Hide the details
<Result> = ParallelTaskExecuteAfter(<Previous task> , <Description of continuation task>)
<Result>: ParallelTask variable ParallelTask variable corresponding to the continuation task. <Previous task>: ParallelTask variable Name of the ParallelTask variable corresponding to the previous task. <Description of continuation task>: Description of ParallelTask variable Name of the Description of ParallelTask variable describing the task that will be run after. Remarks - ParallelTaskExecuteAfter is a non-blocking function.
- If the function is called while the task is already ended, the continuation will be run as soon as possible.
- If the function is called while the task is already canceled, the continuation will not be run.
- If the previous task is canceled while a continuation was created, the continuation will not be run.
- In the code of the continuation task, the MyPreviousParallelTask keyword is used to handle the previous ended task.
Related Examples:
|
Unit examples (WINDEV): Using parallel tasks
[ + ] The parallel tasks are used to speed up the process times and to improve the reactivity of an application. This example presents the functions and types of variables required to use the parallel tasks: - running parallel tasks, - interaction with the controls, - continuation tasks.
|
Business / UI classification: Neutral code
This page is also available for…
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|