CODEWITHSUNDEEP
windowsmemory-management
Mike
Mike

Reputation: 1780

Locking sharable memory

Is there away to page into memory another process’s entire image? In a couple of weeks, our IT staff will be replacing all of the "core" network switches. This will bring down the network. This will be done after normal business hours. During this time, several users will still be using a program that I have written. It will be a nightmare to install local copies of my program on each user's machine. The program normally runs from a network share. The only time the program will access the network is when the program executes its executable (image) code. How can I get the Windows Memory Manager to load the entire image into memory and hold it "lock" there until the network is back online?

Upvotes: 0

Views: 188

Answers (3)

Pavel Lebedinsky
Pavel Lebedinsky

Reputation: 456

You can relink your program with the /swaprun:net option:

http://msdn.microsoft.com/en-us/library/w0628bwh.aspx

Upvotes: 3

egrunin
egrunin

Reputation: 25063

This isn't going to work.

Windows doesn't necessarily load a 'static' copy of the executable into memory, it's free to shuffle chunks around and page parts in and out. Often it loads resources (images, strings, etc.) from the executable after the program has started running. It often loads external libraries dynamically as well.

Edited to add:

There is no such thing as "a process's entire image". Every thread, for example, gets its own allocation.

Maybe you should explain why running from a different location (i.e., a local copy of the binary) won't work for you.

Upvotes: 1

AaronLS
AaronLS

Reputation: 38365

You could write it so that it copies itself locally to temp directory and then have it run that copy as a separate process, and then kill itself(the first copy). I've done this little juggling act before, but it depends on how your program works whether or not it will like being run from the temp directory.

Upvotes: 1

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