madness::AtomicInt Class Reference

An integer with atomic set, get, read+increment, read+decrement, and decrement+test operations. More...

#include <atomicint.h>

Public Member Functions
bool	dec_and_test ()
	Decrements the counter and returns true if the new value is zero,.
	operator int () const volatile
	Returns the value of the counter with fence, ensuring subsequent operations are not moved before the load.
int	operator++ ()
	Increments the counter and returns the incremented value.
int	operator++ (int)
	Increments the counter and returns the original value.
int	operator+= (const int inc)
	Add value and return the new value.
int	operator-- ()
	Decrements the counter and returns the decremented value.
int	operator-- (int)
	Decrements the counter and returns the original value.
int	operator-= (const int dec)
	Subtract dec and return the new value.
AtomicInt &	operator= (const AtomicInt &other)
	Sets the value of the counter, with fences to ensure that operations are not moved to either side of the load+store.
int	operator= (int other)

Private Types
typedef volatile int	atomic_int
	Storage type for the atomic integer.

Private Member Functions
int	exchange_and_add (int i)

Private Attributes
atomic_int	value
	The atomic integer.

Detailed Description

An integer with atomic set, get, read+increment, read+decrement, and decrement+test operations.

Only the default constructor is available and it does \emph not initialize the variable.

Consciously modeled after the TBB API to prepare for switching to it.

Todo:

Should we actually switch to the TBB version?

Member Typedef Documentation

atomic_int

typedef volatile int madness::AtomicInt::atomic_int

private

Storage type for the atomic integer.

Member Function Documentation

dec_and_test()

bool madness::AtomicInt::dec_and_test ( )

inline

Decrements the counter and returns true if the new value is zero,.

Returns

True if the decremented value is 0; false otherwise.

Referenced by madness::Barrier::enter(), and madness::detail::RemoteCounterBase::release().

exchange_and_add()

int madness::AtomicInt::exchange_and_add ( int  i )

inlineprivate

Todo:

Brief description needed.

Todo:

Descriptions needed.

Parameters

[in]

i

Description needed.

Returns

Description needed.

References value.

Referenced by operator++(), operator++(), operator+=(), operator--(), operator--(), and operator-=().

operator int()

madness::AtomicInt::operator int ( ) const volatile

inline

Returns the value of the counter with fence, ensuring subsequent operations are not moved before the load.

References value.

operator++() [1/2]

int madness::AtomicInt::operator++ ( )

inline

Increments the counter and returns the incremented value.

Returns

The incremented value.

References exchange_and_add(), and value.

operator++() [2/2]

int madness::AtomicInt::operator++ ( int  )

inline

Increments the counter and returns the original value.

Returns

The original value.

References exchange_and_add(), and value.

operator+=()

int madness::AtomicInt::operator+= ( const int  inc )

inline

Add value and return the new value.

Parameters

[in]

inc

The value to be added.

Returns

The new value.

References exchange_and_add(), and value.

operator--() [1/2]

int madness::AtomicInt::operator-- ( )

inline

Decrements the counter and returns the decremented value.

Returns

The decremented value.

References exchange_and_add(), and value.

operator--() [2/2]

int madness::AtomicInt::operator-- ( int  )

inline

Decrements the counter and returns the original value.

Returns

The original value.

References exchange_and_add(), and value.

operator-=()

int madness::AtomicInt::operator-= ( const int  dec )

inline

Subtract dec and return the new value.

Parameters

[in]

dec

The value to be subtracted.

Returns

The new value.

References exchange_and_add(), and value.

operator=() [1/2]

AtomicInt & madness::AtomicInt::operator= ( const AtomicInt &  other )

inline

Sets the value of the counter, with fences to ensure that operations are not moved to either side of the load+store.

Parameters

[in]

other

The value to set to.

Returns

This AtomicInt.

operator=() [2/2]

int madness::AtomicInt::operator= ( int  other )

inline

Sets the value of the counter, with a fence ensuring that preceding operations are not moved after the store.

Todo:

Descriptions needed.

Parameters

[in]

other

Description needed.

Returns

Description needed.

References value.

Member Data Documentation

value

atomic_int madness::AtomicInt::value

private

The atomic integer.

Referenced by exchange_and_add(), operator int(), operator++(), operator++(), operator+=(), operator--(), operator--(), operator-=(), and operator=().

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

• atomicint.h