Re: Fwd: [ZEND-ENGINE-CVS] cvs: ZendEngine2 / zend_compile.h zend_exceptions.c zend_execute.c zend_execute.h zend_execute_API.c zend_opcode.c
zend_vm.h zend_vm_handlers.h zend_vm_spec.h

Don't quite understand the question. How is this different from PHP 4? This patch improves performance and is not much different from the switch() we have in PHP 4. Andi At 11:26 PM 9/8/2004 -0700, Sterling Hughes wrote:

this is actually a relevant discussion for internals... ---------- Forwarded message ---------- From: Sterling Hughes <sterling.hughes@gmail.com> Date: Wed, 8 Sep 2004 23:26:00 -0700 Subject: Re: [ZEND-ENGINE-CVS] cvs: ZendEngine2 / zend_compile.h zend_exceptions.c zend_execute.c zend_execute.h zend_execute_API.c zend_opcode.c zend_vm.h zend_vm_handlers.h zend_vm_spec.h To: Andi Gutmans <andi@php.net> Cc: zend-engine-cvs@lists.php.net Added files:

    /ZendEngine2        zend_vm.h zend_vm_handlers.h zend_vm_spec.h

Modified files:

    /ZendEngine2        zend_compile.h zend_exceptions.c zend_execute.c
                        zend_execute.h zend_execute_API.c zend_opcode.c

Log: - Some architectural changes: a) We specialize opcodes according to op_type fields. Each opcode has to

      be marked with which op_type's it uses.

b) We support different execution methods. Function handlers, switch()

      and goto dispatching. goto seems to be the fastest but it really
      depends on the compiler and how well it optimizes. I suggest playing
      around with optimization flags.

- Warning: Things might break so keep us posted on how things are going.

    (Dmitry, Andi)

How could someone like the APC optimizer now hook into this system and add a new instruction without modifying the executor? -Sterling -- PHP Internals - PHP Runtime Development Mailing List To unsubscribe, visit: http://www.php.net/unsub.php