4D v13.4

CLEAR SEMAPHORE

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4D v13.4

4D Language Reference

Process (Communications)

CLEAR SEMAPHORE


CLEAR SEMAPHORE ( semaphore )

Parameter	Type	Description
semaphore	String	Semaphore to clear

Description

CLEAR SEMAPHORE erases semaphore previously set by the Semaphore function.

As a rule, all semaphores that have been created should be cleared. If semaphores are not cleared, they remain in memory until the process that creates them ends. A process can only clear semaphores that it has created. If you try to clear a semaphore from within a process that did not create it, nothing happens.

Example

See the example for Semaphore.

PROPERTIES

Product: 4D
Theme: Process (Communications)
Number: 144

INDEX

Alphabetical list of commands

HISTORY

Created: < 4D v6