osg::PThreadBarrierBase Class Reference
[Multithreading]

#include <OSGBarrier.h>

Inheritance diagram for osg::PThreadBarrierBase:

List of all members.

Class Specific
Char8 *	_szName
static MPType	_type
Public Member Functions
Get
virtual MPType &	getType (void)
virtual const MPType &	getType (void) const
UInt32	getTypeId (void)
const Char8 *	getCName (void) const
Reference Counting
void	addRef (void)
void	subRef (void)
Int32	getRefCount (void)
Static Public Member Functions
Class Get
static const MPType &	getStaticType (void)
static UInt32	getStaticTypeId (void)
Protected Types
typedef BarrierCommonBase	Inherited
Protected Member Functions
Constructors
	PThreadBarrierBase (const Char8 *szName, UInt32 uiId)
Destructor
virtual	~PThreadBarrierBase (void)
Construction
bool	init (void)
Destruction
void	shutdown (void)
Enter
void	enter (void)
void	enter (UInt32 uiNumWaitFor)
Set
void	setNumWaitFor (UInt32 uiNumWaitFor)
Protected Attributes
UInt32	_uiBarrierId
volatile UInt32	_uiNumWaitFor
Private Member Functions
	PThreadBarrierBase (const PThreadBarrierBase &source)
	prohibit default function (move to 'public' if needed)
void	operator= (const PThreadBarrierBase &source)
	prohibit default function (move to 'public' if needed)
Private Attributes
pthread_mutex_t	_pLockOne
pthread_cond_t	_pWakeupCondition [2]
UInt32	_uiCount
UInt32	_uiCurrentCond

---

Detailed Description

Definition at line 131 of file OSGBarrier.h.

---

Member Typedef Documentation

typedef BarrierCommonBase osg::PThreadBarrierBase::Inherited [protected]

Reimplemented from osg::BarrierCommonBase.

Reimplemented in osg::Barrier.

Definition at line 141 of file OSGBarrier.h.

---

Constructor & Destructor Documentation

PThreadBarrierBase::PThreadBarrierBase	(	const Char8 *	szName,
		UInt32	uiId
	)			[protected]

Definition at line 86 of file OSGBarrier.cpp.

                                                             :
     Inherited        (szName, 
                       uiId  ),

    _pLockOne         (      ),
    _uiCount          (0     ),
    _uiCurrentCond    (0     )
{
}

PThreadBarrierBase::~PThreadBarrierBase

(

void

)

[protected, virtual]

Definition at line 99 of file OSGBarrier.cpp.

{
}

osg::PThreadBarrierBase::PThreadBarrierBase

(

const PThreadBarrierBase &

source

)

[private]

---

Member Function Documentation

bool PThreadBarrierBase::init

(

void

)

[protected]

Definition at line 105 of file OSGBarrier.cpp.

References _pLockOne, _pWakeupCondition, _uiCount, and _uiCurrentCond.

Referenced by osg::Barrier::create().

{
    pthread_cond_init (&(_pWakeupCondition[0]), NULL);
    pthread_cond_init (&(_pWakeupCondition[1]), NULL);
    pthread_mutex_init(&(_pLockOne),            NULL);

    _uiCount       = 0;
    _uiCurrentCond = 0;

    return true;
}

void PThreadBarrierBase::shutdown

(

void

)

[protected]

Definition at line 119 of file OSGBarrier.cpp.

References _pLockOne, and _pWakeupCondition.

Referenced by osg::Barrier::~Barrier().

{
    pthread_cond_destroy (&(_pWakeupCondition[0]));
    pthread_cond_destroy (&(_pWakeupCondition[1]));
    pthread_mutex_destroy(&(_pLockOne));
}

void osg::PThreadBarrierBase::enter

(

void

)

[inline, protected]

Reimplemented in osg::Barrier.

Definition at line 105 of file OSGBarrier.inl.

References _pLockOne, _pWakeupCondition, _uiCount, _uiCurrentCond, and osg::BarrierCommonBase::_uiNumWaitFor.

Referenced by osg::Barrier::enter(), and enter().

{

    if(_uiNumWaitFor <= 1)

        return;



    pthread_mutex_lock(&(_pLockOne));



    _uiCount++;



    if(_uiCount < _uiNumWaitFor)

    {

        /* not enough threads are waiting => wait */



        pthread_cond_wait(&(_pWakeupCondition[_uiCurrentCond]), &(_pLockOne));

    }

    else

    {

        /* ok, enough threads are waiting

           => wake up all waiting threads

        */



        pthread_cond_broadcast(&(_pWakeupCondition[_uiCurrentCond]));



        _uiCount       = 0;

        _uiCurrentCond = 1 - _uiCurrentCond;

    }



    pthread_mutex_unlock(&(_pLockOne));

}

void osg::PThreadBarrierBase::enter

(

UInt32

uiNumWaitFor

)

[inline, protected]

Reimplemented in osg::Barrier.

Definition at line 167 of file OSGBarrier.inl.

References osg::BarrierCommonBase::_uiNumWaitFor, and enter().

{

    _uiNumWaitFor = uiNumWaitFor;



    enter();

}

void osg::PThreadBarrierBase::operator=

(

const PThreadBarrierBase &

source

)

[private]

void osg::BarrierCommonBase::setNumWaitFor

(

UInt32

uiNumWaitFor

)

[inline, protected, inherited]

Definition at line 83 of file OSGBarrier.inl.

References osg::BarrierCommonBase::_uiNumWaitFor.

{

    _uiNumWaitFor = uiNumWaitFor;

}

const MPType & MPBase::getStaticType

(

void

)

[static, inherited]

Definition at line 253 of file OSGMPBase.cpp.

References osg::MPBase::_type.

{
    return _type;
}

UInt32 MPBase::getStaticTypeId

(

void

)

[static, inherited]

Definition at line 259 of file OSGMPBase.cpp.

{
    return 0;
}

MPType & MPBase::getType

(

void

)

[virtual, inherited]

Definition at line 265 of file OSGMPBase.cpp.

References osg::MPBase::_type.

Referenced by osg::MPBase::getTypeId().

{
    return _type;
}

const MPType & MPBase::getType

(

void

)

const [virtual, inherited]

Definition at line 271 of file OSGMPBase.cpp.

References osg::MPBase::_type.

{
    return _type;
}

UInt32 MPBase::getTypeId

(

void

)

[inherited]

Definition at line 277 of file OSGMPBase.cpp.

References osg::TypeBase::getId(), and osg::MPBase::getType().

{
    return getType().getId();
}

const Char8 * MPBase::getCName

(

void

)

const [inherited]

Definition at line 283 of file OSGMPBase.cpp.

References osg::MPBase::_szName.

{
    return _szName;
}

void MemoryObject::addRef

(

void

)

[inherited]

Definition at line 64 of file OSGMemoryObject.cpp.

References osg::MemoryObject::_refCount.

Referenced by osg::SharedObjectHandler::getSharedObject(), and osg::SharedObjectHandler::initialize().

{
    _refCount++;
}

void MemoryObject::subRef

(

void

)

[inherited]

Definition at line 69 of file OSGMemoryObject.cpp.

References osg::MemoryObject::_refCount.

{
    _refCount--;

    if(_refCount <= 0)
        delete this;
}

Int32 MemoryObject::getRefCount

(

void

)

[inherited]

Definition at line 77 of file OSGMemoryObject.cpp.

References osg::MemoryObject::_refCount.

{
    return _refCount;
}

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Member Data Documentation

pthread_mutex_t osg::PThreadBarrierBase::_pLockOne [private]

Definition at line 183 of file OSGBarrier.h.

Referenced by enter(), init(), and shutdown().

pthread_cond_t osg::PThreadBarrierBase::_pWakeupCondition[2] [private]

Definition at line 184 of file OSGBarrier.h.

Referenced by enter(), init(), and shutdown().

UInt32 osg::PThreadBarrierBase::_uiCount [private]

Definition at line 185 of file OSGBarrier.h.

Referenced by enter(), and init().

UInt32 osg::PThreadBarrierBase::_uiCurrentCond [private]

Definition at line 186 of file OSGBarrier.h.

Referenced by enter(), and init().

UInt32 osg::BarrierCommonBase::_uiBarrierId [protected, inherited]

Definition at line 86 of file OSGBarrier.h.

volatile UInt32 osg::BarrierCommonBase::_uiNumWaitFor [protected, inherited]

Definition at line 87 of file OSGBarrier.h.

Referenced by enter(), and osg::BarrierCommonBase::setNumWaitFor().

MPType MPBase::_type [static, protected, inherited]

Reimplemented in osg::Barrier, osg::BaseThread, osg::Lock, osg::LockPool, osg::Thread, and osg::ExternalThread.

Definition at line 405 of file OSGMPBase.h.

Referenced by osg::MPBase::getStaticType(), and osg::MPBase::getType().

Char8* osg::MPBase::_szName [protected, inherited]

Definition at line 406 of file OSGMPBase.h.

Referenced by osg::MPBase::getCName(), osg::LockPool::init(), osg::MPBase::MPBase(), osg::BasePThreadBase::print(), and osg::MPBase::~MPBase().

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

• OSGBarrier.h
• OSGBarrier.cpp
• OSGBarrier.inl