com.cosylab.acs.maci.manager.ManagerImpl.ReferenceCountingLock Class Reference

List of all members.

Public Member Functions
	ReferenceCountingLock ()
boolean	acquire (long msecs)
void	release ()
int	referenceCount ()
int	increment ()
int	decrement ()

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Detailed Description

Synchronization helper class used for activation/deactivation synchronization. This class enforces attempt method of acquiring the locks to prevent deadlocks. Class also offers reference counting. (NOTE: automatic lock counting was not implemented due to imperfect usage.)

Example of usage: ReferenceCountingLock lock; if (lock.acquire(3*Sync.ONE_MINUTE)) { try { // critical section here } finally { lock.release(); } } else { throw new TimoutException("Deadlock detected..."); }

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Constructor & Destructor Documentation

com.cosylab.acs.maci.manager.ManagerImpl.ReferenceCountingLock.ReferenceCountingLock

(

)

Constructor of ReferenceCountingLock. After construction lock is free and reference count equals 1.

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Member Function Documentation

boolean com.cosylab.acs.maci.manager.ManagerImpl.ReferenceCountingLock.acquire

(

long

msecs

)

Attempt to acquire lock.

Parameters:

msecs

the number of milliseconds to wait. An argument less than or equal to zero means not to wait at all.

Returns:

true if acquired, false othwerwise.

int com.cosylab.acs.maci.manager.ManagerImpl.ReferenceCountingLock.decrement

(

)

Decrement number of references.

Returns:

number of references.

int com.cosylab.acs.maci.manager.ManagerImpl.ReferenceCountingLock.increment

(

)

Increment number of references.

Returns:

number of references.

int com.cosylab.acs.maci.manager.ManagerImpl.ReferenceCountingLock.referenceCount

(

)

Get number of references.

Returns:

number of references.

void com.cosylab.acs.maci.manager.ManagerImpl.ReferenceCountingLock.release

(

)

Release previously acquired lock.

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The documentation for this class was generated from the following file:

• ManagerImpl.java