Use the following steps to attach to a process and generate a stack:
1. Run ps-elf | grep <process>
2. Mark down the pid for the process to attach to
3. Copy the full path to the process
4. Run the following command which reads the symbols from the executable and attaches to the process ID in memory:
gdb <full path to process> <pid # of process>
example:
gdb /dlc/bin/_sqlsrv2 18227
5. type the following at the gdb command prompt:
where
(this will display the stack)
6. type the following at the gdb command prompt:
detach
(this will detach from process without causing the process to terminate)
7. type the following at the gdb command prompt:
q
(this will quit the debugger)
Note: Other ways to run gdb in batch mode are:
For a non multi-threaded process
gdb --pid=<PID> -ex "where" -ex "detach" -ex "quit" > PID_stack.txt
For multi-threaded processes
gdb --pid=<PID> -ex "thread apply all bt" -ex "detach" -ex "quit" > PID_stack.txt
