Hi Frank, Thanks for the point! Regards. On 2020-07-16 06:19, Frank Ch. Eigler wrote:
Hi -If you can afford a more invasive tool, that requires a lot of memory and stops your application for quite some time, you can look at approaches like dyninst that decompile the binary, insert instrumentation code and reassemble the code.https://dyninst.org/For the record, systemtap includes a backend that uses dyninst as a pure userspace backend. % cat foo.c #include <stdio.h> int foo() { printf("foo\n"); return 1; } int main() { foo(); } % gcc -g foo.c % stap --runtime=dyninst -e ' probe process.function("*").{call,return} { println(pp()) } ' -c a.out foo process("/home/fche/a.out").function("main@/home/fche/foo.c:8").call process("/home/fche/a.out").function("foo@/home/fche/foo.c:3").call process("/home/fche/a.out").function("foo@/home/fche/foo.c:3").return process("/home/fche/a.out").function("main@/home/fche/foo.c:8").return - FChE
|