How to dump thread stacks

Question

I want to dump the stacks of the threads in a file. How can I do that in linux? How can I find the starting address of the stack and its size? Note that I want to do this progammatically from the same process (not using ptrace, gdb or something like that).

Answer 1

if you use the gnu c lib, you can use the backtrace() function

http://www.gnu.org/s/hello/manual/libc/Backtraces.html

Answer 2

Use the pthread_attr_getstack function; this yields the thread's stack address and size.