On Wednesday, 19 August 2015 at 19:05:09 UTC, Lewis wrote:
I was wondering if there was a way to dump the contents of the
heap to a file.
If the heap is guaranteed to be in one contiguous chunk, then
all I would need is:
- The start address of the heap
- The current size of the heap
If it is not in one contiguous chunk, then it might be a little
more complicated.
I'm okay with writing out way more data than needed, I don't
need to compress anything or remove unused but allocated space.
This is for a debugging tool, and so can be a little hacky.
Is this feasible? Does the request make sense?
You could enable core dumping (ulimit -c unlimited), crash the
program, and let Linux do it for you.
If you want to program continue to run, then it becomes
interesting. Are there more threads? You probably want to stop
them, so nobody modifies the heap while you dump it. Apart from
that, just look at how to do it in C.
https://stackoverflow.com/questions/3565232/how-to-programmatically-get-the-address-of-the-heap-on-linux
