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SharedMemory Class Reference

Shared memory. More...

#include <sharedMemory.h>

List of all members.

Public Methods
	SharedMemory (const String &name, int size)
	Constructor. More...
	~SharedMemory ()
	Destructor. More...
void *	getAddress ()
	Address of shared memory block. More...
int	getSize ()
	Size of shared memory block. More...
Private Attributes
int	_shmid
	unix shared memory identifier.
void *	_address
	unix shared memory address.
int	_size
	shared memory size.

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Detailed Description

Shared memory.

This class manages IPC shared memory. Implementation of this class is platform/system dependent.

Author:

Marek Przeczek

Definition at line 46 of file sharedMemory.h.

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Constructor & Destructor Documentation

SharedMemory::SharedMemory (  const String &    name, int    size )

Constructor. It attaches shared memory associated with given name. If shared memory doesn't exist yet, new shared block of memory is created and associated with given name. Parameters: name  name of shared block of memory size  size of shared memory (in bytes) Definition at line 38 of file sharedMemory.cpp.

SharedMemory::~SharedMemory (    )

Destructor. It deattaches attached shared memory from the address space of the process. If possible, block of shared memory is destroyed. Definition at line 53 of file sharedMemory.cpp.

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Member Function Documentation

void* SharedMemory::getAddress (    )  [inline]

Address of shared memory block. This method returns a pointer where shared memory begins - is mapped to process' address space. Returns: pointer to shared memory block Definition at line 89 of file sharedMemory.h. Referenced by CommunShMem::initialize(), CommunShMem::operator<<(), CommunShMem::operator>>(), and CommunShMem::~CommunShMem().

int SharedMemory::getSize (    )  [inline]

Size of shared memory block. Returns: size of shared memory block Definition at line 95 of file sharedMemory.h. Referenced by CommunShMem::operator<<(), and CommunShMem::operator>>().

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

• sharedMemory.h
• sharedMemory.cpp

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