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ROOT » CORE » THREAD » TAtomicCount

class TAtomicCount


TAtomicCountGcc

Class providing atomic operations on a long. Setting, getting,
incrementing and decrementing are atomic, thread safe, operations.

This implementation uses GNU libstdc++ v3 atomic primitives, see
http://gcc.gnu.org/onlinedocs/porting/Thread-safety.html.

ATTENTION: Don't use this file directly, it is included by
TAtomicCount.h.

Function Members (Methods)

public:

	~TAtomicCount()
Long_t	Get() const
long	operator long() const
void	operator++()
Long_t	operator--()
void	Set(Long_t v)
	TAtomicCount(Long_t v)

private:

TAtomicCount&	operator=(const TAtomicCount&)
	TAtomicCount(const TAtomicCount&)

Data Members

private:

_Atomic_word	fCnt	counter

Class Charts

Inheritance Inherited Members Includes Libraries

Class Charts

Function documentation

TAtomicCount(const TAtomicCount& )

TAtomicCount & operator=(const TAtomicCount& )

explicit TAtomicCount(Long_t v)

{ }

void operator++()

{ __atomic_add(&fCnt, 1); }

Long_t operator--()

{ return __exchange_and_add(&fCnt, -1) - 1; }

operator long() const

{ return __exchange_and_add(&fCnt, 0); }

void Set(Long_t v)

Long_t Get() const

{ return __exchange_and_add(&fCnt, 0); }