ACE_Based_Pointer_Basic< CONCRETE > Class Template Reference

A proxy that keeps track of the relative offset of a "pointer" from its base address. This class makes it possible to transparently use "pointers" in shared memory as easily as programming with pointers to local memory. In particular, we don't need to ensure that the base addresses of all the pointers are mapped into separate processes at the same absolute memory base address. More...

#include <Based_Pointer_T.h>

Inheritance diagram for ACE_Based_Pointer_Basic< CONCRETE >:

[legend]

List of all members.

Public Member Functions
	ACE_Based_Pointer_Basic (void)
	ACE_Based_Pointer_Basic (CONCRETE *initial)
	ACE_Based_Pointer_Basic (const ACE_Based_Pointer_Basic< CONCRETE > &)
	Copy constructor.
	ACE_Based_Pointer_Basic (const void *base_addr, int o)
void	operator= (CONCRETE *from)
	Pseudo-assignment operator.
void	operator= (const ACE_Based_Pointer_Basic< CONCRETE > &)
	Pseudo-assignment operator.
CONCRETE	operator * (void) const
	Dereference operator.
bool	operator< (const ACE_Based_Pointer_Basic< CONCRETE > &) const
	Less than operator.
bool	operator<= (const ACE_Based_Pointer_Basic< CONCRETE > &) const
	Less than or equal operator.
bool	operator> (const ACE_Based_Pointer_Basic< CONCRETE > &) const
	Greater than operator.
bool	operator>= (const ACE_Based_Pointer_Basic< CONCRETE > &) const
	Greater than or equal operator.
bool	operator== (const ACE_Based_Pointer_Basic< CONCRETE > &) const
	Equality operator.
bool	operator!= (const ACE_Based_Pointer_Basic< CONCRETE > &) const
	Inequality operator.
CONCRETE	operator[] (int index) const
	Subscript operator.
void	operator+= (int index)
	Increment operator.
	operator CONCRETE * () const
	Returns the underlying memory address of the smart pointer.
CONCRETE *	addr (void) const
	Returns the underlying memory address of the smart pointer.
void	dump (void) const
	Dump the state of the object.
Public Attributes
	ACE_ALLOC_HOOK_DECLARE
	Declare the dynamic allocation hooks.
Protected Attributes
ptrdiff_t	target_
ptrdiff_t	base_offset_
	Keep track of our offset from the base pointer.

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Detailed Description

template<class CONCRETE>
class ACE_Based_Pointer_Basic< CONCRETE >

A proxy that keeps track of the relative offset of a "pointer" from its base address. This class makes it possible to transparently use "pointers" in shared memory as easily as programming with pointers to local memory. In particular, we don't need to ensure that the base addresses of all the pointers are mapped into separate processes at the same absolute memory base address.

---

Constructor & Destructor Documentation

template<class CONCRETE>

ACE_Based_Pointer_Basic< CONCRETE >::ACE_Based_Pointer_Basic

(

void

)

[inline]

This constructor initializes the <base_offset_> by asking the <ACE_BASED_POINTER_REPOSITORY> Singleton for the base address of the memory region within which it is instantiated. Two results are possible:

1. An <ACE_*_Memory_Pool> has stored a base address/size pair and the new based-pointer instance is located between the base address and the base address + size - 1. In this case, the repository returns the base address.

2. No suitable address/size pair was found. The repository assumes an address in the regular (not mapped) virtual address space of the process and returns 0. In this case, the based-pointer uses its address as an offset to it's base address 0.

template<class CONCRETE>

ACE_Based_Pointer_Basic< CONCRETE >::ACE_Based_Pointer_Basic

(

CONCRETE *

initial

)

[inline]

Initialize this object using the <initial> pointer. This constructor initializes the <base_offset_> by asking the <ACE_BASED_POINTER_REPOSITORY> Singleton for the base address of the memory region within which it is instantiated. Three results are possible:

1. An <ACE_*_Memory_Pool> has stored a base address/size pair and the new based-pointer instance is located between the base address and the base address + size - 1. In this case, the repository returns the base address.

2. No suitable address/size pair was found. The repository assumes an address in the regular (not mapped) virtual address space of the process and returns 0. In this case, the based-pointer uses its address as an offset to its base address 0.

3. If <initial> is 0 then set the value of <target_> to -1, which indicates a "NULL" pointer.

template<class CONCRETE>

ACE_Based_Pointer_Basic< CONCRETE >::ACE_Based_Pointer_Basic

(

const ACE_Based_Pointer_Basic< CONCRETE > &

)

[inline]

Copy constructor.

template<class CONCRETE>

ACE_Based_Pointer_Basic< CONCRETE >::ACE_Based_Pointer_Basic	(	const void *	base_addr,
		int	o
	)			[inline]

Constructor for know base address. <o> is only used to resolve overload ambiguity.

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Member Function Documentation

template<class CONCRETE>

ACE_INLINE void ACE_Based_Pointer_Basic< CONCRETE >::operator=

(

CONCRETE *

from

)

[inline]

Pseudo-assignment operator.

Reimplemented in ACE_Based_Pointer< CONCRETE >.

template<class CONCRETE>

ACE_INLINE void ACE_Based_Pointer_Basic< CONCRETE >::operator=

(

const ACE_Based_Pointer_Basic< CONCRETE > &

rhs

)

[inline]

Pseudo-assignment operator.

template<class CONCRETE>

ACE_INLINE CONCRETE ACE_Based_Pointer_Basic< CONCRETE >::operator *

(

void

)

const [inline]

Dereference operator.

template<class CONCRETE>

ACE_INLINE bool ACE_Based_Pointer_Basic< CONCRETE >::operator<

(

const ACE_Based_Pointer_Basic< CONCRETE > &

rhs

)

const [inline]

Less than operator.

template<class CONCRETE>

ACE_INLINE bool ACE_Based_Pointer_Basic< CONCRETE >::operator<=

(

const ACE_Based_Pointer_Basic< CONCRETE > &

rhs

)

const [inline]

Less than or equal operator.

template<class CONCRETE>

ACE_INLINE bool ACE_Based_Pointer_Basic< CONCRETE >::operator>

(

const ACE_Based_Pointer_Basic< CONCRETE > &

rhs

)

const [inline]

Greater than operator.

template<class CONCRETE>

ACE_INLINE bool ACE_Based_Pointer_Basic< CONCRETE >::operator>=

(

const ACE_Based_Pointer_Basic< CONCRETE > &

rhs

)

const [inline]

Greater than or equal operator.

template<class CONCRETE>

ACE_INLINE bool ACE_Based_Pointer_Basic< CONCRETE >::operator==

(

const ACE_Based_Pointer_Basic< CONCRETE > &

rhs

)

const [inline]

Equality operator.

template<class CONCRETE>

ACE_INLINE bool ACE_Based_Pointer_Basic< CONCRETE >::operator!=

(

const ACE_Based_Pointer_Basic< CONCRETE > &

rhs

)

const [inline]

Inequality operator.

template<class CONCRETE>

ACE_INLINE CONCRETE ACE_Based_Pointer_Basic< CONCRETE >::operator[]

(

int

index

)

const [inline]

Subscript operator.

template<class CONCRETE>

ACE_INLINE void ACE_Based_Pointer_Basic< CONCRETE >::operator+=

(

int

index

)

[inline]

Increment operator.

template<class CONCRETE>

ACE_INLINE ACE_Based_Pointer_Basic< CONCRETE >::operator CONCRETE *

(

)

const [inline]

Returns the underlying memory address of the smart pointer.

template<class CONCRETE>

ACE_INLINE CONCRETE * ACE_Based_Pointer_Basic< CONCRETE >::addr

(

void

)

const [inline]

Returns the underlying memory address of the smart pointer.

template<class CONCRETE>

void ACE_Based_Pointer_Basic< CONCRETE >::dump

(

void

)

const [inline]

Dump the state of the object.

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Member Data Documentation

template<class CONCRETE>

ACE_Based_Pointer_Basic< CONCRETE >::ACE_ALLOC_HOOK_DECLARE

Declare the dynamic allocation hooks.

template<class CONCRETE>

ptrdiff_t ACE_Based_Pointer_Basic< CONCRETE >::target_ [protected]

template<class CONCRETE>

ptrdiff_t ACE_Based_Pointer_Basic< CONCRETE >::base_offset_ [protected]

Keep track of our offset from the base pointer.

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

• Based_Pointer_T.h
• Based_Pointer_T.cpp
• Based_Pointer_T.inl

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