Aspect::Library::Profiler - reusable method call profiling aspect
# profile all subs on SlowObject aspect Profiler => call qr/^SlowObject::/; # will be profiled SlowObject->foo; # will not FastObject->bar;
Aspect::Modular
This class implements a reusable aspect that profiles subroutine calls. It uses Benchmark::Timer to profile elapsed times for your calls to the affected methods. The profiling report will be printed to STDERR at the end of program execution.
Benchmark::Timer
STDERR
The design comes from Attribute::Profiled by Tatsuhiko Miyagawa.
Attribute::Profiled
+-------------+ | A | +-------------+ | X -> Y <- Z | +-^-----------+
Suppose you want to profile some code, call it X, part of a larger program, called A. So you run your program under a profiler, and notice most of the time is spent not in X, but in Y. X uses Y, but so does Z. You only want to profile how X uses Y, not how Z uses Y. This is where this aspect can help- you can install a profiling aspect with a cflow() pointcut, to profile only usage of Y by code in the call flow of X.
X
A
Y
Z
cflow()
See the Aspect pods for a guide to the Aspect module.
You can find an example of using this aspect in the examples/ directory of the distribution.
examples/
To install Aspect, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Aspect
CPAN shell
perl -MCPAN -e shell install Aspect
For more information on module installation, please visit the detailed CPAN module installation guide.