LockBlock Class Reference

#include <pep_ipc.H>

Inheritance diagram for LockBlock:

Public Member Functions
	LockBlock (int elem_cnt, key_t k_sem)
	LockBlock (int elem_cnt)
virtual	~LockBlock ()
void	lock (int id)
void	unlock (int id)
int	resources ()
void	force_destroy ()
virtual int	attach_cnt ()
Public Member Functions inherited from ObjectIPC
	ObjectIPC (key_t id_k)
virtual key_t	key ()

Additional Inherited Members
Protected Member Functions inherited from ObjectIPC
void	new_key ()

Detailed Description

Used for independent locking of vector elements. Each element is resource representation. Locking of an element means that other concurrent processes that use the same object to be aware of synchronous access will wait during lock() method until unlock() will be called.

Constructor & Destructor Documentation

LockBlock::LockBlock	(	int	elem_cnt,
		key_t	k_sem
	)

Access to existant locking block and check it for min count of elements if elem_cnt = 0

LockBlock::LockBlock

(

int

elem_cnt

)

Create new locking block for pointed count of elements

virtual LockBlock::~LockBlock ( )

virtual

If this object has the last connection with the semaphore it delete sem_id

Member Function Documentation

virtual int LockBlock::attach_cnt ( )

virtual

Returns count of attached processes (users)

Reimplemented from ObjectIPC.

void LockBlock::force_destroy ( )

inline

Disable destruction of a semaphore due to existant attachments

void LockBlock::lock

(

int

id

)

Lock resource with pointed id

int LockBlock::resources

(

)

Return count of handled resources

void LockBlock::unlock

(

int

id

)

Unlock without any checking of validity

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

• /net/opt/univers/ubp-i-15.3-centos7-x64.urij/include/csi/pep_ipc.H