`perl` Provider

The perl provider provides probes for tracing perl scripts.

This provider is in development and is not currently available

The following probes are available in BleadPerl, Leopard OSX and various patches for 5.8.8 and 5.10

Probe	(arguments) Description
sub-entry	(function, filename, line number) perl code function call entry
sub-return	(function, filename, line number) perl code function call exit

The following probes are being worked on by SvenDowideit, and are available for 5.8.8 and bleadperl

Probe	arguments	Description
load-module-entry	moduleName	instruments use, require, do and load
load-module-return	moduleName
main-enter	none	instruments the internal perl processing stages - construct, parse, run, destruct
main-exit	none
new-sv	void*	instruments all perl allocations
del-sv	void*	instruments all perl deallocations

Other expected or hoped for probes:

Probe	arguments	Description
sub-stack	(function, filename, line number, stacktext, stackdepth)	hoped to be able to show a text stack dump on sub-entry

The changes still only work for dynamically linked Perl, statically links execuatbles core dump if you have probes enabled (which causes issues when the build process uses miniperl)
There are intermittent linker issuse for miniperl - caused when you build a second or third time

perl Provider