Accessing Physical Memory - Important needed for project

delivi

Jan 26 2006, 09:37 PM

Is there a way to access the contents of the physical memory from an application .

please give details about the corresponding functions and libraries or apis to be used.

I need this for my personal project.

switch

Jan 29 2006, 05:55 AM

yep, you use a wonderful thing called pointers. Pretty much 'pointers' point to a memory location. So if you set a pointer as '0' it will point to memory location 0. if you set it to '14' it will point to location 14. this way, you can simply scan through memory by incrementing the pointer. I assume you're using C++, so, to declare a pointer:

CODE

int *myPointer;

This makes a new pointer titled myPointer that can only point to ints.

then, to change the address that a pointer pointers to:

CODE

myPointer = myPointer + whatever;

This adds whatever to the address number of myPointer.

then, to access the data in the pointer:

CODE

data = *myPointer;

This extracts the information from the memory location that myPointer is pointing to.

If you're still confused, sorry I didn't explain it better. Also, there's heaps of information around on the web. Just search for "C++ pointers" or something and you'll find loads of simpler tutorials.
Cheers.

delivi

Jan 29 2006, 10:45 AM

Thanks switch,

Actually I want to access the entire physical memory and store it as a file, i am want to create a program like the hibernate functionality in windows XP. So please kindly help me.

kvkv

Jan 30 2006, 12:54 AM

QUOTE(delivi @ Jan 29 2006, 06:45 AM)

Thanks switch,

Actually I want to access the entire physical memory and store it as a file, i am want to create a program like the hibernate functionality in windows XP. So please kindly help me.

I don't think it is possible unless it is built into operating system. Any good OS (I don't even consider DOS a OS) will protect the memory access by bounding it within the allocated logical block. If you try to access memory which is not allocated to your program, it will be terminated by your os.

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