SharedMem Class Reference

Detailed Description

Provides shared memory among processes.

A SharedMemory object must be created with a name and a size. Then other processes can use the same memory by creating an object with the same name and size. The function ptr() returns a pointer to the base of the shared memory block or NULL y there was a problem creating the mapping.

SharedMem memo("mymemory", 16000);
char buffer[100]; // and fill it with data
if(memo.ptr())
    memcpy( memo.ptr(), buffer, 100 );

Then another process can do:

SharedMem memo("mymemory", 16000);
 
char buffer[100];
if(memo.ptr())
    memcpy( buffer, memo.ptr(), 100 );

To read from the memory written by the first process.

Deprecated:

This class was an experiment and might be removed sometime.

#include <asl/SharedMem.h>

Public Member Functions
	SharedMem (const String &name, int size)
	Creates a shared memory object with the given name and size in bytes.
byte *	ptr ()
	Returns the base address of the mapping of this block in the current process or NULL on error.

Constructor & Destructor Documentation

SharedMem()

SharedMem	(	const String &	name,
		int	size
	)

Creates a shared memory object with the given name and size in bytes.

If a segment with that name does not exist it will be created, otherwise a reference to it will be made.

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

• SharedMem.h