Out of curiosity, what's the slowdown without fastcall?
Despite the potential slowdown, I still think this is the way to go. The
engine isn't supposed to crash!
Nuno
----- Original Message -----
From: "Dmitry Stogov" <[EMAIL PROTECTED]>
To: "PHP Internals List" <internals@lists.php.net>
Cc: "Andi Gutmans" <[EMAIL PROTECTED]>; "Stanislav Malyshev" <[EMAIL PROTECTED]>
Sent: Tuesday, June 10, 2008 12:11 PM
Subject: [PHP-DEV] [PATCH] Executor improvements
Hi,
The proposed patch for PHP improves the executor.
At first it eliminates direct execute() recursion so the following
script won't produce SIGSEGV anymore (It'll produce memory overflow
error instead).
<?php
function foo() {
foo();
}
foo();
?>
Note that in case some extension (e.q. xdebug) override zend_execute(),
VM will use recursive calls.
At second executor now uses "fastcall" calling convention, and as result
it gives ~5% speedup on bench.php (~3.8 sec instead of ~4.0 sec)
Any objections?
Thanks. Dmitry.
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