Re: Question

Hi, On Sun, 2013-03-24 at 19:33 -0300, Cesar D. Rodas wrote: > Hi there, > > I'm writing an extension (it'll be opensource), something inspired in > Python's ctypes (similar to > http://pecl.php.net/package/ffi) > > In order to make things a bit interesting, I allow to register > resources types from the userland (I don't know if this ok), and its > destructor is a function callback from the userland. > > More or less like this, > > <?php > use Ctypes\Resource; > use Ctypes\Library; > use CTypes\Type; > > // Create new Resource Type > $memory = new Resource("memory"); > > // load library > $lib = new Library("/lib64/libc.so.6"); > > // create function proxies > $malloc = $lib->getFunction("malloc", /* return */ $memory, /* > prototype */ array(Type::tInteger)); > $free = $lib->getFunction("free", NULL, array($memory)); > > // tell how to destroy the $memory resouces > $memory->setDestructor($free); > > $memory = $malloc(250); /* do the malloc */ > > unset($memory); // This will call the $free. > ?> > > Anyways, I'm having issues while I'm destroying the objects. It > usually works, unless the program ends with an exception, then for > some reason, my callback is released before the resources (according > to valgrind, zend_hash_graceful_reverse_destroy is destroying > my > resources). That's what I think is the issue but it could be another > thing also, I'm just a C wannabe developer :-) > I think there is a term "resource" which is misunderstood, as what you mean by that is the Resource class. PHP resource type is something else. Do you define the create/destroy handlers for the Resource class? If you save your props into the internal object struct, you can free them in the destroy handler. See http://lxr.php.net/xref/PHP_5_5/ext/com_dotnet/com_handlers.c#665 or find more on lxr.php.net. Generally create_object handler should have a destroy handler. > My question is if there is there a way to release (zval *) a RSHUTDOWN > if it wasn't released yet? I could also call to Z_ADDREF_P to the > resources when I create them, but that would mean that all resources > will be destroyed at RSHUTDOWN, that won't be good for cli apps. > Do you mean long running CLI apps? Almost hard to imagine the situation without looking at the code. Using create/destroy handlers would work with GC or if explicit unset() was invoked. Regards Anatol