Dad method: Semophore

 <dadobj> "Semaphore" valtime [flags]

• <dadobj> is the name of a PinK Dad object,
• Semaphore is the name of the applied method,
• the semaphore will stay valid for valtime seconds. A value of 0 releases the semaphore. After the validity period has passed without the client releasing the semaphore again, any other client's call to dadSemaphore with the same type will succeed and the clients write permission will vanish.
• The only yet valid flags argument is -w defining the semaphore to be of the "exclusive write access" type. This allows only this client to modify the attached database. The -w flag is also the default.

• Return value: -

See also:

• Dad manual entry,
• RepUpdate, Write, WriteTab, WUpdate.

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