Methods of Class Semaphore

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Methods of Class Semaphore

Semaphore

Semaphore(

sal_uInt32

initialCount );

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

Creates a semaphore.<BR>

Parameters

InitialCount

denotes the starting value the semaphore. If you set it to
zero, the first acquire() blocks. Otherwise InitialCount acquire()s  are
immedeatly  successfull.

Return

0 if the semaphore could not be created, otherwise a handle to the sem.

~Semaphore

~Semaphore();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

Release the OS-structures and free semaphore data-structure

Return

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acquire

sal_Bool acquire();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

acquire()decreases the count. It will block if it tries to
decrease below zero.

Return

False if the system-call failed.

tryToAcquire

sal_Bool tryToAcquire();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Description

tryToAcquire()tries to decreases the count. It will 
return with False if it would decrease the count below zero.
(When acquire() would block.) If it could successfully 
decrease the count, it will return True.

release

sal_Bool release();

virtual	abstract	const	volatile	template	static	inline	C-linkage
NO	NO	NO	NO	NO	NO	YES	NO

Summary

release()increases the count.

Return

False if the system-call failed.

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