function::get_cycles - Linux
Overview
The function::get_cycles
command calculates the number of function calls made during the execution of a given function. This information can be useful for performance analysis, profiling, and optimization.
Syntax
function::get_cycles [options] <function_name>
Parameters:
<function_name>
: The name of the function whose call count is to be computed.
Options/Flags
-r, --reset
: Reset the call count of the specified function to zero.
Examples
Counting function calls:
function::get_cycles my_function
Resetting function call count:
function::get_cycles -r my_function
Common Issues
- Function not found: The specified function may not exist or may not be visible in the current context. Ensure that the function is defined and accessible.
- Permission denied: The user may not have sufficient permissions to access the function call count information.
Integration
The function::get_cycles
command can be used with other Linux commands and tools for advanced profiling and performance analysis. For example:
Combine with strace
:
strace -e trace=function::get_cycles my_program
Use with profiling tools:
perf record --call-graph dwarf function::get_cycles my_function
Related Commands
perf
: Performance analysis and profiling toolgetrusage
: Get resource usage informationstrace
: Trace system calls and signals