function::ucallers - Linux
Overview
function::ucallers locates and prints all locations in the source code where a particular function is called. It is useful for analyzing code dependencies, tracing function calls, and identifying potential performance bottlenecks.
Syntax
function::ucallers [options] <function>
Options/Flags
| Option | Description | Default |
|—|—|—|
| -f
| Parse function name from its full path | |
| -i
| Ignore case when matching function names | |
| -n
| Print only line numbers | |
| -r
| Print relative paths to source files | |
| -s
| Suppress unnecessary output | |
| -w
| Print only file names | |
Examples
- Print call locations for the
main
function:
function::ucallers main
- Ignore case and print only line numbers:
function::ucallers -i -n strcmp
Common Issues
- Ensure that the specified function name is accurate and exists in the source code.
- If no matches are found, verify that the source code is included in the search path.
- To exclude specific files or directories from the search, use
grep
orawk
to filter the output.
Integration
function::ucallers can be integrated with other tools for advanced analysis:
- ctags: Generate a tags file of the source code and use
ctags -x
to find call locations. - callgrind: Profile a program to identify frequently called functions and then use function::ucallers to trace their calls.
Related Commands
- ctags
- grep
- awk
- callgrind