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 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.