On Sun, Aug 19, 2012 at 6:28 AM, Stas Malyshev <smalys...@sugarcrm.com> wrote: > Hi! > >> For PHP we would need to have some similar behavior. PHP's current >> exception model is incompatible with GeneratorExitException (because >> PHP does not have BaseExceptions). So what I'd probably do instead is >> monkeypatch a ZEND_RETURN opcode at the current execution position and > > Patching opcodes is not a good idea, since opcodes could be cached, and > the cache can be shared between different processes.
Patching a single opcode should be okay, because it does not require modification of the op_array. Only execute_data->opline has to be changed (and the execute data is not shared). The exception handling mechanism currently uses the same technique. It patches an ZEND_HANDLE_EXCEPTION opcode into the current position. Nikita -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php
