Using gdb stop the program when it is using any function from file X

Question

and I would like to know if there is any way to stop a program when is using a function from a certain file. Ideally what I am looking for is something like:

Answer 1

Step 1: construct a list of all functions defined in foo.cpp
The simplest way I can think of (assuming you have binutils and GNU grep):

nm a.out | grep ' T ' | addr2line  -fe a.out |
  grep -B1 'foo\.cpp' | grep -v 'foo\.cpp' > funclist

Step 2: construct a GDB script which will set a break point on each of the above functions:

sed 's/^/break /' funclist > stop-in-foo.gdb

[Obviously, steps 1 and 2 could be combined ;-]

Step 3: actually set the breakpoints:

gdb a.out
(gdb) source stop-in-foo.gdb

Looking at this answer, an even simpler (if you are on Fedora Linux) way to find out which foo.cpp functions are called:

ftrace -sym='foo.cpp#*' ./a.out

Too bad ftrace man page says this isn't implemented yet.