diff options
| author | Johannes Stoelp <johannes.stoelp@gmail.com> | 2024-11-09 11:41:49 +0100 |
|---|---|---|
| committer | Johannes Stoelp <johannes.stoelp@gmail.com> | 2024-11-09 11:41:49 +0100 |
| commit | 3d599bcbf6771def1076c3e9561bc748956dfc94 (patch) | |
| tree | 2fee901361f650a3ff65f0a8401909da60153b5f /src/trace_profile | |
| parent | cec6cc310a499c8f5659052b70eb0211bccb109f (diff) | |
| download | notes-3d599bcbf6771def1076c3e9561bc748956dfc94.tar.gz notes-3d599bcbf6771def1076c3e9561bc748956dfc94.zip | |
ltrace: example to trace dlopen-ed libraries
Diffstat (limited to 'src/trace_profile')
| -rw-r--r-- | src/trace_profile/ltrace.md | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/src/trace_profile/ltrace.md b/src/trace_profile/ltrace.md index cfa3fae..12bd4b3 100644 --- a/src/trace_profile/ltrace.md +++ b/src/trace_profile/ltrace.md @@ -7,6 +7,8 @@ ltrace [opts] [prg] -o <file> ... log output into <file> -l <filter> . show who calls into lib matched by <filter> -C .......... demangle + -x <filter> . which symbol table entry points to trace + (can be of form sym_pattern@lib_pattern) ``` # Example @@ -15,3 +17,17 @@ List which program/libs call into `libstdc++`: ```bash ltrace -l '*libstdc++*' -C -o ltrace.log ./main ``` + +Trace symbols from `dlopen(3)`ed libraries. +```bash +# Assume libfoo.so would be dynamically loaded via dlopen. +ltrace -x '@libfoo.so' + +# Trace all dlopened symbols. +ltrace -x '*' +# Trace all symbols from dlopened libraries which name match the +# pattern "liby*". +ltrace -x '@liby*' +# Trace symbol "foo" from all dlopened libraries matching the pattern. +ltrace -x 'foo@liby*' +```
\ No newline at end of file |