DataBlockLockPool Class Reference

Holds and distributes locks to be used for locking ACE_Data_Blocks. Currently it does not require returning the locks. More...

#include <DataBlockLockPool.h>

Inheritance diagram for DataBlockLockPool:

Collaboration diagram for DataBlockLockPool:

Public Types
typedef ACE_Lock_Adapter< ACE_Thread_Mutex >	DataBlockLock

Public Member Functions
	DataBlockLockPool (unsigned long size)
	~DataBlockLockPool ()
DataBlockLock *	get_lock ()

Private Types
typedef ACE_Array< DataBlockLock >	Pool

Private Attributes
Pool	pool_
const unsigned long	size_
OpenDDS::DCPS::Atomic< unsigned long >	iterator_
	Counter used to track which lock to give out next (modulus size_) More...

Detailed Description

Holds and distributes locks to be used for locking ACE_Data_Blocks. Currently it does not require returning the locks.

: The lock returned is not guaranteed to be unique.

: This class is thread safe.

Definition at line 30 of file DataBlockLockPool.h.

Member Typedef Documentation

DataBlockLock

typedef ACE_Lock_Adapter<ACE_Thread_Mutex> DataBlockLockPool::DataBlockLock

Definition at line 32 of file DataBlockLockPool.h.

Pool

typedef ACE_Array<DataBlockLock> DataBlockLockPool::Pool

private

Definition at line 49 of file DataBlockLockPool.h.

Constructor & Destructor Documentation

DataBlockLockPool()

DataBlockLockPool::DataBlockLockPool ( unsigned long  size )

inline

Definition at line 34 of file DataBlockLockPool.h.

    : pool_(size),
      size_(size),
      iterator_(0)
  {
  }

~DataBlockLockPool()

DataBlockLockPool::~DataBlockLockPool ( )

inline

Definition at line 41 of file DataBlockLockPool.h.

{ }

Member Function Documentation

get_lock()

DataBlockLock* DataBlockLockPool::get_lock ( )

inline

Definition at line 43 of file DataBlockLockPool.h.

References size_.

Referenced by OpenDDS::DCPS::RtpsUdpDataLink::alloc_msgblock(), and OpenDDS::DCPS::TransportSendStrategy::prepare_packet().

                             {
    const unsigned long index = iterator_++ % size_;
    return &(pool_[index]);
  }

Member Data Documentation

iterator_

OpenDDS::DCPS::Atomic<unsigned long> DataBlockLockPool::iterator_

private

Counter used to track which lock to give out next (modulus size_)

Definition at line 54 of file DataBlockLockPool.h.

pool_

Pool DataBlockLockPool::pool_

private

Definition at line 51 of file DataBlockLockPool.h.

size_

const unsigned long DataBlockLockPool::size_

private

Definition at line 52 of file DataBlockLockPool.h.

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

• DataBlockLockPool.h