CriticalSectionEnd (Function)

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Using critical sections
Miscellaneous

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CriticalSectionEnd (Function)

In french: SectionCritiqueFin

Marks the end of critical section: the code will be run by another thread.

To mark the start of critical section, use CriticalSectionStart.

Versions 24 and later

When the calls to CriticalSectionStart and CriticalSectionEnd are in the same section of the code, it is recommended to use the type CriticalSection and the syntax USE ... IN.
Example:

// Using a Critical Section variable
S is CriticalSection

// Use for a code block
//---------------------------
USING S IN
// code protected by the critical section
// only one thread will execute this code at a given moment
END

New in version 24

When the calls to CriticalSectionStart and CriticalSectionEnd are in the same section of the code, it is recommended to use the type CriticalSection and the syntax USE ... IN.
Example:

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 WEBDEV sites in Linux.

This function is now available for WINDEV applications in Linux.

This function is now available for iPhone/iPad applications.

New in version 19

This function is now available for WEBDEV sites in Linux.

This function is now available for WINDEV applications in Linux.

This function is now available for iPhone/iPad applications.

This function is now available for WEBDEV sites in Linux.

This function is now available for WINDEV applications 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.

Example

Versions 21 and later

// Critical section on a variable
t is array <critical section> of int
CriticalSectionStart(t)
// Operations on the array by one only thread at a time
CriticalSectionEnd(t)

New in version 21

// Critical section on a variable
t is array <critical section> of int
CriticalSectionStart(t)
// Operations on the array by one only thread at a time
CriticalSectionEnd(t)

// Use of a named critical section
CriticalSectionStart("MySection")
// Two threads will not be able to run this code at the same time
...
CriticalSectionEnd("MySection")

Syntax

Versions 24 and later

Ending a critical section on a code section: using the CriticalSection type Hide the details

CriticalSectionStart(<Critical section>)

<Critical section>: CriticalSection variable

Name of the CriticalSection variable used to identify the critical section.

New in version 24

Ending a critical section on a code section: using the CriticalSection type Hide the details

CriticalSectionStart(<Critical section>)

<Critical section>: CriticalSection variable

Name of the CriticalSection variable used to identify the critical section.

Ending a critical section on a code section: using the CriticalSection type Hide the details

CriticalSectionStart(<Critical section>)

<Critical section>: CriticalSection variable

Name of the CriticalSection variable used to identify the critical section.

Versions 21 and later

Ending a critical section on a variable Hide the details

CriticalSectionEnd([<Variable name>])

<Variable name>: Any type

Name of WLanguage variable that was protected in a critical section by CriticalSectionStart. This variable must be defined with the attribute <critical section>.

New in version 21

Ending a critical section on a variable Hide the details

CriticalSectionEnd([<Variable name>])

<Variable name>: Any type

Name of WLanguage variable that was protected in a critical section by CriticalSectionStart. This variable must be defined with the attribute <critical section>.

Ending a critical section on a variable Hide the details

CriticalSectionEnd([<Variable name>])

<Variable name>: Any type

Name of WLanguage variable that was protected in a critical section by CriticalSectionStart. This variable must be defined with the attribute <critical section>.

Ending a named critical section on a code section Hide the details

CriticalSectionEnd([<Section name>])

<Section name>: Optional character string

Identifies the critical section.

Remarks

Using critical sections

To handle critical sections, the management mode of threads must be changed by ThreadMode (associated with the ThreadCriticalSection constant).

Miscellaneous

For more details on critical sections, see Managing the critical sections.
If a thread is destroyed while it is found in a critical section, the critical section is automatically freed.
A single thread is allowed in all the sections with the same name.
If sections use a different name, a thread can run the code of one section while another thread runs the code of another section.

Component: wd270vm.dll