ThreadMode (Function)

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Managing the multi-processors

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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.

ThreadMode has no effect: the management mode is always multi-processor, with manual management of critical sections.

Versions 15 and later

This function is now available for Android applications.

New in version 15

This function is now available for Android applications.

Versions 18 and later

This function is now available in Windows Store apps mode.

This function is now available in Android Widget mode.

New in version 18

This function is now available in Windows Store apps mode.

This function is now available in Android Widget mode.

This function is now available in Windows Store apps mode.

This function is now available in Android Widget mode.

Versions 19 and later

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

This function is now available for iPhone/iPad applications.

New in version 19

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

This function is now available for iPhone/iPad applications.

This function is now available for WINDEV applications in Linux.

This function is now available for WEBDEV sites in Linux.

This function is now available for iPhone/iPad applications.

Versions 21 and later

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

New in version 21

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

This function is now available in Apple Watch mode.

This function is now available in Universal Windows 10 App mode.

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:
threadMultiProcessor
(Default value) The threads are automatically distributed among the different processors or among the different cores.
threadMonoProcessor All the threads of the application are run on a single processor or on a single core.
The constants corresponding to the repartition of the threads on the processors or on the cores are not available.

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:
threadMultiProcessor
(Default value) The threads are automatically distributed among the different processors or among the different cores.
threadMonoProcessor All the threads of the application are run on a single processor or on a single core.
The constants corresponding to the repartition of the threads on the processors or on the cores are not available.

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.

Component: wd270vm.dll