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- Managing the multi-processors
ThreadMode (Function) In french: ThreadMode Modifies the management modes of threads. The available management modes are as follows: - the automatic or manual management of the critical sections on the procedures and on the methods.
- the distribution of the execution of the threads on the different processors or on the different cores of the computer.
The automatic critical sections prevent the execution of a procedure or method by several threads simultaneously. The automatic critical sections are enabled by default.
Syntax
Modifying the management modes of threads Hide the details
<Result> = ThreadMode(<New management modes>)
<Result>: Integer Management modes of threads before the modification, combination of the constants below. <New management modes>: Constant or combination of constants Mode for managing the critical sections of procedures and methods: | | | threadAuto | Automatic management of critical sections: each procedure or method can be run by a single thread at a time. | threadCriticalSection
(Default value) | Manual management of critical sections: each procedure or method can be run by several threads simultaneously. In this case, you must protect the accesses to the resources shared between the different threads by critical sections. |
Distribution of the threads on the processors or on the cores: | | | threadMonoProcessor | All the threads of the application are run on a single processor or on a single core. | threadMultiProcessor
(Default value) | The threads are automatically distributed among the different processors or among the different cores. |
Retrieving the management modes of threads Hide the details
<Result> = ThreadMode()
<Result>: Integer constant (or combination of constants) Current management modes of threads: Mode for managing the critical sections of procedures and methods: | | | threadAuto | Automatic management of critical sections: each procedure or method can be run by a single thread at a time. | threadCriticalSection
(Default value) | Manual management of critical sections: each procedure or method can be run by several threads simultaneously. In this case, you must protect the accesses to the resources shared between the different threads by critical sections. |
Distribution of the threads on the processors or on the cores: | | | threadMonoProcessor | All the threads of the application are run on a single processor or on a single core. | threadMultiProcessor
(Default value) | The threads are automatically distributed among the different processors or among the different cores. |
Remarks Managing the multi-processors This option should only be used in some advanced cases. On a single-core single-processor computer, the threadMonoProcessor and threadMultiProcessor constants have no influence. On a multi-core or multi-processor computer: - The threadMonoProcessor mode forces the application to use a single processor or a single core.
- The threadMultiProcessor mode is used to restore the standard operating mode: in this case, the system automatically manage the distribution of the threads on the processors or on the cores.
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