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Hi, I'm fairly new to linux but I am a long time programmer.
I'm trying to understand how linux handles stacks. (Assume 2.6.x).
First, I'd like to know how to determine how large a particular process/thread's stack is. I found that I can 'cat /proc/####/status | grep -i vmstk" and get 'a number', but after several tests, I don't trust that this is the stack size. (I've found it hard to get good documentation on what VmStk is...)
Another method I tried to figure out approx how large a default stack is, was this program (reproduced from memory, so might have a few mistakes...) :
static int total_kb = 0;
For anyone reviewing this thread, note also, that the stack size in this case was for a single threaded program. Stack size allocated to additional threads would likely be much smaller, and would be bounded by its stack address and the previous stacks address. The first threads stack is, if I understand correctly, only bounded when it starts to run into stuff in the application space that sits underneath it.