ACE  6.1.0
Public Member Functions | Public Attributes | Protected Attributes
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 >:
Inheritance graph
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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.

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  )

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)

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 > &  )

Copy constructor.

template<class CONCRETE>
ACE_Based_Pointer_Basic< CONCRETE >::ACE_Based_Pointer_Basic ( const void *  base_addr,
int  o 
)

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


Member Function Documentation

template<class CONCRETE >
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

Dump the state of the object.

template<class CONCRETE >
ACE_Based_Pointer_Basic< CONCRETE >::operator CONCRETE * ( ) const [inline]

Returns the underlying memory address of the smart pointer.

template<class CONCRETE>
bool ACE_Based_Pointer_Basic< CONCRETE >::operator!= ( const ACE_Based_Pointer_Basic< CONCRETE > &  rhs) const [inline]

Inequality operator.

template<class CONCRETE >
CONCRETE ACE_Based_Pointer_Basic< CONCRETE >::operator* ( void  ) const [inline]

Dereference operator.

template<class CONCRETE >
void ACE_Based_Pointer_Basic< CONCRETE >::operator+= ( int  index) [inline]

Increment operator.

template<class CONCRETE>
bool ACE_Based_Pointer_Basic< CONCRETE >::operator< ( const ACE_Based_Pointer_Basic< CONCRETE > &  rhs) const [inline]

Less than operator.

template<class CONCRETE>
bool ACE_Based_Pointer_Basic< CONCRETE >::operator<= ( const ACE_Based_Pointer_Basic< CONCRETE > &  rhs) const [inline]

Less than or equal operator.

template<class CONCRETE>
void ACE_Based_Pointer_Basic< CONCRETE >::operator= ( CONCRETE *  from) [inline]
template<class CONCRETE>
void ACE_Based_Pointer_Basic< CONCRETE >::operator= ( const ACE_Based_Pointer_Basic< CONCRETE > &  rhs) [inline]

Pseudo-assignment operator.

template<class CONCRETE>
bool ACE_Based_Pointer_Basic< CONCRETE >::operator== ( const ACE_Based_Pointer_Basic< CONCRETE > &  rhs) const [inline]

Equality operator.

template<class CONCRETE>
bool ACE_Based_Pointer_Basic< CONCRETE >::operator> ( const ACE_Based_Pointer_Basic< CONCRETE > &  rhs) const [inline]

Greater than operator.

template<class CONCRETE>
bool ACE_Based_Pointer_Basic< CONCRETE >::operator>= ( const ACE_Based_Pointer_Basic< CONCRETE > &  rhs) const [inline]

Greater than or equal operator.

template<class CONCRETE >
CONCRETE ACE_Based_Pointer_Basic< CONCRETE >::operator[] ( int  index) const [inline]

Subscript operator.


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 >::base_offset_ [protected]

Keep track of our offset from the base pointer.

template<class CONCRETE>
ptrdiff_t ACE_Based_Pointer_Basic< CONCRETE >::target_ [protected]

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