Kwave::FixedPool< SIZE, T > Class Template Reference

#include <FixedPool.h>

Collaboration diagram for Kwave::FixedPool< SIZE, T >:

Public Member Functions
	FixedPool ()
virtual	~FixedPool ()
T *	allocate ()
void	release (T *element)

Private Attributes
T	m_storage [SIZE]
QQueue< T * >	m_free_queue
QSemaphore	m_sem_free
QMutex	m_lock

Detailed Description

template<unsigned int SIZE, class T>
class Kwave::FixedPool< SIZE, T >

Definition at line 30 of file FixedPool.h.

Constructor & Destructor Documentation

FixedPool()

template<unsigned int SIZE, class T>

Kwave::FixedPool< SIZE, T >::FixedPool ( )

inline

Constructor

Definition at line 34 of file FixedPool.h.

            :m_storage(), m_free_queue(), m_sem_free(0), m_lock()
        {
            for (unsigned int i = 0; i < SIZE; ++i)
                release(&(m_storage[i]));
        }

~FixedPool()

template<unsigned int SIZE, class T>

virtual Kwave::FixedPool< SIZE, T >::~FixedPool ( )

inlinevirtual

Destructor

Definition at line 42 of file FixedPool.h.

{ }

Member Function Documentation

allocate()

template<unsigned int SIZE, class T>

T* Kwave::FixedPool< SIZE, T >::allocate ( )

inline

Allocate an element from the pool

Returns

pointer to an element

Definition at line 48 of file FixedPool.h.

                      {
            m_sem_free.acquire();
            {
                QMutexLocker _lock(&m_lock);
                return m_free_queue.dequeue();
            }
        }

release()

template<unsigned int SIZE, class T>

void Kwave::FixedPool< SIZE, T >::release ( T *  element )

inline

Release an element and put it back into the pool

Parameters

element

pointer to an element

Definition at line 60 of file FixedPool.h.

Referenced by Kwave::FixedPool< MAX_FFT_JOBS, Kwave::SonagramPlugin::Slice >::FixedPool().

                                 {
            QMutexLocker _lock(&m_lock);
            m_free_queue.enqueue(element);
            m_sem_free.release();
        }

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Member Data Documentation

m_free_queue

template<unsigned int SIZE, class T>

QQueue<T *> Kwave::FixedPool< SIZE, T >::m_free_queue

private

queue with free elements

Definition at line 71 of file FixedPool.h.

Referenced by Kwave::FixedPool< MAX_FFT_JOBS, Kwave::SonagramPlugin::Slice >::allocate(), and Kwave::FixedPool< MAX_FFT_JOBS, Kwave::SonagramPlugin::Slice >::release().

m_lock

template<unsigned int SIZE, class T>

QMutex Kwave::FixedPool< SIZE, T >::m_lock

private

lock for protecting the m_free_queue

Definition at line 77 of file FixedPool.h.

Referenced by Kwave::FixedPool< MAX_FFT_JOBS, Kwave::SonagramPlugin::Slice >::allocate(), and Kwave::FixedPool< MAX_FFT_JOBS, Kwave::SonagramPlugin::Slice >::release().

m_sem_free

template<unsigned int SIZE, class T>

QSemaphore Kwave::FixedPool< SIZE, T >::m_sem_free

private

semaphore for counting available elements

Definition at line 74 of file FixedPool.h.

Referenced by Kwave::FixedPool< MAX_FFT_JOBS, Kwave::SonagramPlugin::Slice >::allocate(), and Kwave::FixedPool< MAX_FFT_JOBS, Kwave::SonagramPlugin::Slice >::release().

m_storage

template<unsigned int SIZE, class T>

T Kwave::FixedPool< SIZE, T >::m_storage[SIZE]

private

array used as storage for the pool elements

Definition at line 68 of file FixedPool.h.

Referenced by Kwave::FixedPool< MAX_FFT_JOBS, Kwave::SonagramPlugin::Slice >::FixedPool().

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

• libkwave/FixedPool.h