NAME
B::Hooks::OP::PPAddr - Hook into opcode execution
SYNOPSIS
#include "hook_op_check.h"
#include "hook_op_ppaddr.h"
STATIC OP *
execute_entereval (pTHX_ OP *op, void *user_data) {
...
}
STATIC OP *
check_entereval (pTHX_ OP *op, void *user_data) {
hook_op_ppaddr (op, execute_entereval, NULL);
}
hook_op_check (OP_ENTEREVAL, check_entereval, NULL);
DESCRIPTION
This module provides a c api for XS modules to hook into the execution
of perl opcodes.
ExtUtils::Depends is used to export all functions for other XS modules
to use. Include the following in your Makefile.PL:
my $pkg = ExtUtils::Depends->new('Your::XSModule', 'B::Hooks::OP::PPAddr');
WriteMakefile(
... # your normal makefile flags
$pkg->get_makefile_vars,
);
Your XS module can now include "hook_op_ppaddr.h".
TYPES
typedef OP *(*hook_op_ppaddr_cb_t) (pTHX_ OP *, void *user_data)
Type that callbacks need to implement.
FUNCTIONS
void hook_op_ppaddr (OP *op, hook_op_ppaddr_cb_t cb, void *user_data)
Replace the function to execute "op" with the callback "cb". "user_data"
will be passed to the callback as the last argument.
void hook_op_ppaddr_around (OP *op, hook_op_ppaddr_cb_t before, hook_op_ppaddr_cb_t after, void *user_data)
Register the callbacks "before" and "after" to be called before and
after the execution of "op". "user_data" will be passed to the callback
as the last argument.
SEE ALSO
B::Hooks::OP::Check
AUTHOR
Florian Ragwitz <
[email protected]>
COPYRIGHT AND LICENSE
Copyright (c) 2008 Florian Ragwitz
This module is free software.
You may distribute this code under the same terms as Perl itself.
