ThreadSafeRef< REFERENCE > Class Template Reference

#include <threadsaferef.h>

Inheritance diagram for ThreadSafeRef< REFERENCE >:

Detailed Description

template<typename REFERENCE>
class maxon::ThreadSafeRef< REFERENCE >

Template for safe access to BaseRef from multiple threads. This comes at the cost of extra atomic operations and will cause high contention if used thoughtless.

ThreadSafeRef<SampleClassRef> g_global;
 
// consumer thread
SampleClassRef now = g_global;
 
// producer thread
SampleClassRef newObject = CreateSomething();
g_global = newObject;

Note

If there is high contention a queue will perform much better (no matter if you use a job queue or a MPMC queue to store the objects only).

Template Parameters

REFERENCE

Type of the reference that will be stored thread-safe.

Public Member Functions
	ThreadSafeRef ()
	ThreadSafeRef (const REFERENCE &strongReference)
	ThreadSafeRef (const ThreadSafeRef &src)
	ThreadSafeRef (ThreadSafeRef &&src)
	~ThreadSafeRef ()
ThreadSafeRef &	operator= (const REFERENCE &strongReference)
Bool	TryCompareAndSwap (const REFERENCE &strongReference, const REFERENCE &compare)
ThreadSafeRef &	operator= (const ThreadSafeRef &src)
ThreadSafeRef &	operator= (std::nullptr_t)
ThreadSafeRef &	operator= (ThreadSafeRef &&src)
REFERENCE	Get () const
	operator REFERENCE () const

Private Types
using	DereferencedPtr = typename REFERENCE::ReferencedType *

Additional Inherited Members
Protected Member Functions inherited from ThreadSafePtr< REFERENCE::ReferencedType * >
MAXON_IMPLICIT	ThreadSafePtr (REFERENCE::ReferencedType * src=nullptr)
	~ThreadSafePtr ()
REFERENCE::ReferencedType *	AcquirePtr () const
void	ReleasePtr (REFERENCE::ReferencedType * ptr) const
REFERENCE::ReferencedType *	ChangePtr (REFERENCE::ReferencedType * ptr) const
Bool	TryCompareAndSwapPtr (REFERENCE::ReferencedType * ptr, REFERENCE::ReferencedType * compare) const
REFERENCE::ReferencedType *	AttemptAcquirePtr () const
Protected Attributes inherited from ThreadSafePtr< REFERENCE::ReferencedType * >
AtomicUInt	_ptr

Member Typedef Documentation

DereferencedPtr

using DereferencedPtr = typename REFERENCE::ReferencedType*

private

Constructor & Destructor Documentation

ThreadSafeRef() [1/4]

ThreadSafeRef

(

)

ThreadSafeRef() [2/4]

ThreadSafeRef ( const REFERENCE &  strongReference )

explicit

Parameters

[in]

strongReference

BaseRef with strong reference to an object.

ThreadSafeRef() [3/4]

ThreadSafeRef

(

const ThreadSafeRef< REFERENCE > &

src

)

Copy constructs a thread safe pointer. THREADSAFE.

Parameters

[in]

src

Source thread safe pointer.

ThreadSafeRef() [4/4]

ThreadSafeRef

(

ThreadSafeRef< REFERENCE > &&

src

)

Moves a thread safe pointer. THREADSAFE.

Parameters

[in]

src

Source thread safe pointer.

~ThreadSafeRef()

~ThreadSafeRef

(

)

THREADSAFE.

Member Function Documentation

operator=() [1/4]

ThreadSafeRef& operator=

(

const REFERENCE &

strongReference

)

Adds a strong reference. THREADSAFE.

Parameters

[in]

strongReference

BaseRef with strong reference to an object.

Returns

*this.

TryCompareAndSwap()

Bool TryCompareAndSwap	(	const REFERENCE &	strongReference,
		const REFERENCE &	compare
	)

Atomic compare and swap of the reference. THREADSAFE.

Parameters

[in]	strongReference	BaseRef with strong reference to an object.
[in]	compare	Old BaseRef to compare with current value.

Returns

True if the reference was exchanged.

operator=() [2/4]

ThreadSafeRef& operator=

(

const ThreadSafeRef< REFERENCE > &

src

)

Copies a thread safe pointer.

Parameters

[in]

src

Source thread safe pointer.

Returns

*this.

operator=() [3/4]

ThreadSafeRef& operator=

(

std::nullptr_t

)

Resets the thread safe pointer.

Returns

*this.

operator=() [4/4]

ThreadSafeRef& operator=

(

ThreadSafeRef< REFERENCE > &&

src

)

Moves a thread safe pointer.

Parameters

[in]

src

Source thread safe pointer.

Returns

*this.

Get()

REFERENCE Get

(

)

const

Constructs a new BaseRef with a strong reference. THREADSAFE.

Returns

BaseRef with a strong reference.

operator REFERENCE()

operator REFERENCE

(

)

const

Constructs a new BaseRef with a strong reference. THREADSAFE.

Returns

BaseRef with a strong reference.