php-src/Zend
2009-04-22 21:27:19 +00:00
..
RFCs this one is declined 2004-01-09 18:55:49 +00:00
tests Fixed bug #48004 (Error handler prevents creation of default object) 2009-04-21 08:12:07 +00:00
acconfig.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
acinclude.m4 2.4.1 is safe 2009-02-14 21:08:02 +00:00
bench.php Make it backward compatibility 2008-05-16 14:33:52 +00:00
build.mk
buildconf
ChangeLog ChangeLog update 2005-08-06 05:37:51 +00:00
configure.in - Rewrite scanner to be based on re2c instead of flex 2008-03-16 21:06:55 +00:00
header - MFH: Year++ 2009-01-02 20:45:43 +00:00
LICENSE - More -> 2006 changes 2006-01-05 02:34:02 +00:00
Makefile.am Fixed floating point mathematic speed degradation (Christian) 2009-03-18 10:18:10 +00:00
Makefile.frag - Fix dependency 2005-01-25 10:39:49 +00:00
OBJECTS2_HOWTO - modifyable -> modifiable 2004-04-12 12:22:26 +00:00
README.ZEND_MM MFH 2007-07-19 13:57:16 +00:00
README.ZEND_VM Nuked DOS EOLs 2005-08-03 13:29:00 +00:00
zend_alloc.c - MFH: Fixed bug #47852 (Compilation failure in zend_alloc.c) (Matteo) 2009-04-01 16:55:47 +00:00
zend_alloc.h Fix WS 2009-01-25 13:41:50 +00:00
zend_API.c Bug #47880 (crashes in call_user_func_array()) 2009-04-06 11:10:32 +00:00
zend_API.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_build.h MFH: 2009-01-17 17:18:00 +00:00
zend_builtin_functions.c Fixed bug #47664 (get_class returns NULL instead of FALSE) 2009-03-16 09:51:32 +00:00
zend_builtin_functions.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
ZEND_CHANGES Add some information about array overloading 2004-08-30 18:48:52 +00:00
zend_closures.c [DOC] Remove $this support in closures for PHP 5.3 beta 1 2009-01-26 22:54:34 +00:00
zend_closures.h [DOC] Remove $this support in closures for PHP 5.3 beta 1 2009-01-26 22:54:34 +00:00
zend_compile.c MFH: fix DVAL_TO_LVAL conversion for static array indexes, related to bug #46701 2009-04-22 21:27:19 +00:00
zend_compile.h [DOC] Remove $this support in closures for PHP 5.3 beta 1 2009-01-26 22:54:34 +00:00
zend_config.nw.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_config.w32.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_constants.c fix #46304: Defining namespaced constant using define() uses case sensitive match for namespace 2009-01-12 21:54:37 +00:00
zend_constants.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_default_classes.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_dynamic_array.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_dynamic_array.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_errors.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_exceptions.c - MFH Catch exceptions in cli -a 2009-01-02 13:14:49 +00:00
zend_exceptions.h - MFH Catch exceptions in cli -a 2009-01-02 13:14:49 +00:00
zend_execute_API.c Calculate hash value once 2009-04-08 13:17:58 +00:00
zend_execute.c Fixed bug #48004 (Error handler prevents creation of default object) 2009-04-21 09:40:13 +00:00
zend_execute.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_extensions.c MFH: Changed spelling from "build" to "built" 2009-04-08 13:26:35 +00:00
zend_extensions.h add utility macro 2009-04-08 23:06:16 +00:00
zend_fast_cache.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_float.c Forgotten file (sorry) 2009-03-18 11:53:10 +00:00
zend_float.h Fixed floating point mathematic speed degradation (Christian) 2009-03-18 10:18:10 +00:00
zend_gc.c Improved GC speed and reduced stack usage 2009-04-03 18:52:21 +00:00
zend_gc.h - MFH: Year++ 2009-01-02 20:45:43 +00:00
zend_globals_macros.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_globals.h Fixed bug #47038 (Memory leak in include) 2009-03-25 15:23:58 +00:00
zend_hash.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_hash.h Fixed "-0" parsing and optimized overflow check (Matt) 2009-03-24 16:02:50 +00:00
zend_highlight.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_highlight.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_indent.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_indent.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_ini_parser.y MFH: Bump copyright year, 1 of 3. 2008-12-31 11:13:47 +00:00
zend_ini_scanner_defs.h Unmangle 2009-02-14 21:20:16 +00:00
zend_ini_scanner.c Unmangle 2009-02-14 21:20:16 +00:00
zend_ini_scanner.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_ini_scanner.l fix bug #46347: allow * in ini keys 2009-02-02 19:23:13 +00:00
zend_ini.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_ini.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_interfaces.c Fixed bug #47699 (autoload and late static binding) 2009-03-25 10:39:26 +00:00
zend_interfaces.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_istdiostream.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_iterators.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_iterators.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_language_parser.y Fixed bug #47516 (nowdoc can not be embed in heredoc but can be embed in double quote) 2009-03-26 12:37:54 +00:00
zend_language_scanner_defs.h Fixed bug #47516 (nowdoc can not be embed in heredoc but can be embed in double quote) 2009-03-26 12:37:54 +00:00
zend_language_scanner.c Fixed bug #47516 (nowdoc can not be embed in heredoc but can be embed in double quote) 2009-03-26 12:37:54 +00:00
zend_language_scanner.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_language_scanner.l Fixed bug #47516 (nowdoc can not be embed in heredoc but can be embed in double quote) 2009-03-26 12:37:54 +00:00
zend_list.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_list.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_llist.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_llist.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_modules.h Build IDs 2009-01-17 02:05:13 +00:00
zend_multibyte.c - Add support for CP850 encoding (patch by Denis Giffeler) 2009-03-18 17:44:25 +00:00
zend_multibyte.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_multiply.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_object_handlers.c Reverted "Rebind closure when binding to property" 2009-01-14 10:28:22 +00:00
zend_object_handlers.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_objects_API.c MFH: fix bug #47353 (crash when creating a lot of objects in object destructor) 2009-02-11 09:58:23 +00:00
zend_objects_API.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_objects.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_objects.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_opcode.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_operators.c optimization 2009-03-18 11:25:37 +00:00
zend_operators.h MFH: Fixed bug #45877 (Array key '2147483647' left as string) 2009-03-18 01:08:12 +00:00
zend_ptr_stack.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_ptr_stack.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_qsort.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_qsort.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_sprintf.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_stack.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_stack.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_static_allocator.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_static_allocator.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_stream.c Fixed bug #47596 (Bus error on parsing file) 2009-03-26 17:28:49 +00:00
zend_stream.h MFH: Add proper EOF handling for language scanner. Fixes bug #46817. 2009-03-11 22:11:53 +00:00
zend_strtod.c Fixed floating point mathematic speed degradation (Christian) 2009-03-18 10:18:10 +00:00
zend_strtod.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_ts_hash.c MFH: add zend_ts_hash_copy_to_hash() 2009-01-09 19:16:55 +00:00
zend_ts_hash.h MFH: add zend_ts_hash_copy_to_hash() 2009-01-09 19:16:55 +00:00
zend_types.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_variables.c MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_variables.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_vm_def.h Improved specialization (IS_CONST can't be IS_OBJECT) 2009-04-08 13:19:34 +00:00
zend_vm_execute.h Improved specialization (IS_CONST can't be IS_OBJECT) 2009-04-08 13:19:34 +00:00
zend_vm_execute.skl - Removed direct executor recursion. 2008-06-11 13:18:41 +00:00
zend_vm_gen.php MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_vm_opcodes.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend_vm.h MFH: Bump copyright year, 3 of 3. 2008-12-31 11:15:49 +00:00
zend.c Fixed bug #47714 (autoloading classes inside exception_handler leads to crashes) 2009-03-26 10:56:45 +00:00
Zend.dsp Fixed floating point mathematic speed degradation (Christian) 2009-03-18 10:18:10 +00:00
zend.h MFH: Fixed bug #45877 (Array key '2147483647' left as string) 2009-03-18 01:08:12 +00:00
zend.ico
Zend.m4 - MFH: Changed floating point behaviour to consistently use double precision 2008-12-02 16:19:10 +00:00
ZendCore.dep
ZendTS.dsp Added support for lambda functions and closures 2008-07-14 09:49:03 +00:00

ZEND_VM
=======

ZEND_VM architecture allows specializing opcode handlers according to op_type
fields and using different execution methods (call threading, switch threading
and direct threading). As a result ZE2 got more than 20% speedup on raw PHP
code execution (with specialized executor and direct threading execution
method). As in most PHP applications raw execution speed isn't the limiting
factor but system calls and database callls are, your mileage with this patch
will vary.

Most parts of the old zend_execute.c go into zend_vm_def.h. Here you can
find opcode handlers and helpers. The typical opcode handler template looks
like this:

ZEND_VM_HANDLER(<OPCODE-NUMBER>, <OPCODE>, <OP1_TYPES>, <OP2_TYPES>)
{
	<HANDLER'S CODE>
}

<OPCODE-NUMBER> is a opcode number (0, 1, ...)
<OPCODE> is an opcode name (ZEN_NOP, ZEND_ADD, :)
<OP1_TYPES> & <OP2_TYPES> are masks for allowed operand op_types. Specializer
will generate code only for defined combination of types. You can use any 
combination of the following op_types UNUSED, CONST, VAR, TMP and  CV also
you can use ANY mask to disable specialization according operand's op_type.
<HANDLER'S CODE> is a handler's code itself. For most handlers it stills the
same as in old zend_execute.c, but now it uses macros to access opcode operands
and some internal executor data.

You can see the conformity of new macros to old code in the following list:

EXECUTE_DATA
	execute_data
ZEND_VM_DISPATCH_TO_HANDLER(<OP>)
	return <OP>_helper(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU)
ZEND_VM_DISPATCH_TO_HELPER(<NAME>) 
	return <NAME>(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU)
ZEND_VM_DISPATCH_TO_HELPER_EX(<NAME>,<PARAM>,<VAL>) 
	return <NAME>(<VAL>, ZEND_OPCODE_HANDLER_ARGS_PASSTHRU)
ZEND_VM_CONTINUE()
	return 0
ZEND_VM_NEXT_OPCODE()
	NEXT_OPCODE()
ZEND_VM_SET_OPCODE(<TARGET>
	SET_OPCODE(<TARGET>
ZEND_VM_INC_OPCODE()
	INC_OPCOD()
ZEND_VM_RETURN_FROM_EXECUTE_LOOP()
	RETURN_FROM_EXECUTE_LOOP()
ZEND_VM_C_LABEL(<LABEL>):
	<LABEL>:
ZEND_VM_C_GOTO(<LABEL>)
	goto <LABEL>
OP<X>_TYPE
	opline->op<X>.op_type
GET_OP<X>_ZVAL_PTR(<TYPE>)
	get_zval_ptr(&opline->op<X>, EX(Ts), &free_op<X>, <TYPE>)
GET_OP<X>_ZVAL_PTR_PTR(<TYPE>)
	get_zval_ptr_ptr(&opline->op<X>, EX(Ts), &free_op<X>, <TYPE>)
GET_OP<X>_OBJ_ZVAL_PTR(<TYPE>)
	get_obj_zval_ptr(&opline->op<X>, EX(Ts), &free_op<X>, <TYPE>)
GET_OP<X>_OBJ_ZVAL_PTR_PTR(<TYPE>)
	get_obj_zval_ptr_ptr(&opline->op<X>, EX(Ts), &free_op<X>, <TYPE>)
IS_OP<X>_TMP_FREE()
	IS_TMP_FREE(free_op<X>)
FREE_OP<X>()
	FREE_OP(free_op<X>)
FREE_OP<X>_IF_VAR()
	FREE_VAR(free_op<X>)
FREE_OP<X>_VAR_PTR()
	FREE_VAR_PTR(free_op<X>)


Executor's helpers can be defined without parameters or with one parameter. 
This is done with the following constructs:

ZEND_VM_HELPER(<HELPER-NAME>, <OP1_TYPES>, <OP2_TYPES>)
{
	<HELPER'S CODE>
}

ZEND_VM_HELPER_EX(<HELPER-NAME>, <OP1_TYPES>, <OP2_TYPES>, <PARAM_SPEC>)
{
	<HELPER'S CODE>
}

Executor's code is generated by PHP script zend_vm_gen.php it uses zend_vm_def.h
and zend_vm_execute.skl as input and produces zend_vm_opcodes.h and 
zend_vm_execute.h. The first file is a list of opcode definitions. It is 
included from zend_compile.h. The second one is an executor code itself. It is
included from zend_execute.c.

zend_vm_gen.php can produce different kind of executors. You can select 
different opcode threading model using --with-vm-kind=CALL|SWITCH|GOTO. You can 
disable opcode specialization using --without-specializer. You can include or
exclude old executor together with specialized one using --without-old-executor.
At last you can debug executor using original zend_vm_def.h or generated file
zend_vm_execute.h. Debugging with original file requires --with-lines
option. By default ZE2 uses the following command to generate executor:

$ php zend_vm_gen.php --with-vm-kind=CALL

Zend Engine II currently includes two executors during the build process, one
is the specialized version and the other is the old one non-specialized with
function handlers. By default Zend Engine II uses the specialized one but you
can switch to the old executor at runtime by calling zend_vm_use_old_executor().