php-src/Zend
Antony Dovgal d7c1980a21 typofix
2005-12-26 23:58:42 +00:00
..
RFCs this one is declined 2004-01-09 18:55:49 +00:00
tests typofix 2005-12-26 23:58:42 +00:00
acconfig.h Bump up the year 2005-08-03 13:30:58 +00:00
acinclude.m4 MFH: Allow bison 2.1. 2005-11-01 10:31:56 +00:00
bench.php Removed warnings 2005-08-02 12:11:55 +00:00
build.mk Add clean target which removes standard targets 1999-10-10 02:02:13 +00:00
buildconf Use libtool to build. 1999-10-04 15:20:12 +00:00
ChangeLog ChangeLog update 2005-08-06 05:37:51 +00:00
configure.in - Compile fix for systems without uint32_t typedef 2005-01-22 20:28:17 +00:00
flex.skl - added script encoding support to Zend Engine 2. 2003-08-11 05:24:42 +00:00
FlexLexer.h Replace macros which begin with an underscore through an appropiately 2000-07-03 00:55:36 +00:00
header - Added missing header sections. 2005-01-10 14:57:36 +00:00
LICENSE - Bumber up year 2005-08-03 14:08:58 +00:00
Makefile.am - MFH Move reflection to its own extension 2005-11-30 21:46:26 +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_VM Nuked DOS EOLs 2005-08-03 13:29:00 +00:00
zend_alloc.c MFH:- Include timestamp for the leaks. (to make possible matching leaks with access_log entries) 2005-12-12 11:00:57 +00:00
zend_alloc.h fix compile warning with Apache2 and Zend VM disabled 2005-12-16 22:29:34 +00:00
zend_API.c - Simplify and synch is_callable_ex() with actual execution code 2005-12-16 22:15:41 +00:00
zend_API.h - Simplify and synch is_callable_ex() with actual execution code 2005-12-16 22:15:41 +00:00
zend_arg_defs.c - Added missing header sections. 2005-01-10 14:57:36 +00:00
zend_builtin_functions.c Fixed bug #34729 (Crash in ZTS mode under Apache) 2005-12-01 11:48:17 +00:00
zend_builtin_functions.h MFH: Add an additional field $frame['object'] to the result array of debug_backtrace() that contains a reference to the respective object when the frame was called from an object. 2005-11-24 05:07:28 +00:00
ZEND_CHANGES Add some information about array overloading 2004-08-30 18:48:52 +00:00
zend_compile.c - MFH Fix Bug #35720 A final constructor can be overwritten 2005-12-17 15:51:52 +00:00
zend_compile.h Fixed bug #31177 (menory leaks and corruption because of incorrect refcounting). 2005-10-20 07:30:42 +00:00
zend_config.nw.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_config.w32.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_constants.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_constants.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_default_classes.c - MFH Move reflection to its own extension 2005-11-30 21:46:26 +00:00
zend_dynamic_array.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_dynamic_array.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_errors.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_exceptions.c improve error messages 2005-12-05 13:39:52 +00:00
zend_exceptions.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_execute_API.c Fixed bug #35612 (iis6 Access Violation crash). (alacn dot uhahaa at gmail dot com) 2005-12-22 16:46:15 +00:00
zend_execute.c Reverted invalid fix for bug #35785 2005-12-26 08:18:38 +00:00
zend_execute.h MFH (removed unnecesary call to zval_ptr_dtor) 2005-09-19 17:50:24 +00:00
zend_extensions.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_extensions.h - MFH zend_is_callable_ex() returns zend_class_entry* if available 2005-10-25 23:19:59 +00:00
zend_fast_cache.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_globals_macros.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_globals.h Fixed bug #34729 (Crash in ZTS mode under Apache) 2005-12-01 11:48:17 +00:00
zend_hash.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_hash.h Fixed bug #35509 (string constant as array key has different behavior inside object) 2005-12-05 08:56:09 +00:00
zend_highlight.c Fixed bug #35655 (whitespace following end of heredoc is lost). 2005-12-13 20:55:42 +00:00
zend_highlight.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_indent.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_indent.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_ini_parser.y Bump up the year 2005-08-03 13:30:58 +00:00
zend_ini_scanner.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_ini_scanner.l Bump up the year 2005-08-03 13:30:58 +00:00
zend_ini.c Fix bug #34307. We were not calling on_modify handler to set the default 2005-09-02 20:51:15 +00:00
zend_ini.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_interfaces.c - MFH Allow uncached global functions 2005-10-03 12:36:36 +00:00
zend_interfaces.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_istdiostream.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_iterators.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_iterators.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_language_parser.y Fixed bug #34873 (Segmentation Fault on foreach in object) 2005-10-17 07:57:00 +00:00
zend_language_scanner.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_language_scanner.l Fixed bug #35655 (whitespace following end of heredoc is lost). 2005-12-13 20:55:42 +00:00
zend_list.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_list.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_llist.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_llist.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_mm.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_mm.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_modules.h bump API number 2005-09-22 19:13:32 +00:00
zend_multibyte.c Fixed bug #35147 (__HALT_COMPILER() breaks with --enable-zend-multibyte) 2005-11-15 13:29:39 +00:00
zend_multibyte.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_multiply.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_object_handlers.c Fixed bug #34729 (Crash in ZTS mode under Apache) 2005-12-01 11:48:17 +00:00
zend_object_handlers.h - MFH move zend_object_Value definition to zend_types.h 2005-12-20 21:37:52 +00:00
zend_objects_API.c Fixed call to __destruct() for objects of classes delivered from internal ones those use zend_objects_store_put(obj, NULL, ... 2005-11-15 12:41:31 +00:00
zend_objects_API.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_objects.c Allow recursive calls to __get/__set for different properties 2005-11-15 13:35:23 +00:00
zend_objects.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_opcode.c Fixed bug #34729 (Crash in ZTS mode under Apache) 2005-12-01 11:48:17 +00:00
zend_operators.c - Enforce termination to prevent possible SEGVs 2005-12-12 19:10:12 +00:00
zend_operators.h - MFH add Z_OBJVAL*() macros 2005-12-20 21:37:19 +00:00
zend_ptr_stack.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_ptr_stack.h Fixed bug #31177 (menory leaks and corruption because of incorrect refcounting) 2005-10-20 07:23:26 +00:00
zend_qsort.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_qsort.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_sprintf.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_stack.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_stack.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_static_allocator.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_static_allocator.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_stream.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_stream.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_strtod.c - Compile fix for systems without int32_t typedef 2005-02-17 04:44:52 +00:00
zend_strtod.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_ts_hash.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_ts_hash.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_types.h - MFH move zend_object_Value definition to zend_types.h 2005-12-20 21:37:52 +00:00
zend_variables.c Bump up the year 2005-08-03 13:30:58 +00:00
zend_variables.h Bump up the year 2005-08-03 13:30:58 +00:00
zend_vm_def.h Fixed bug #35470 (Assigning global using variable name from array doesn't function) 2005-11-30 10:09:37 +00:00
zend_vm_execute.h Fixed bug #35437 (Segfault or Invalid Opcode 137/1/4) 2005-12-01 12:50:58 +00:00
zend_vm_execute.skl Fixed bug #35437 (Segfault or Invalid Opcode 137/1/4) 2005-12-01 12:50:58 +00:00
zend_vm_gen.php more typos fixed (thanks to Mike Naberezny for noticing these) 2005-12-05 20:06:33 +00:00
zend_vm_opcodes.h $id:$ tatgs are removed from generated files to avoid committing of Zend/zend_vm_opcodes.h without real changes. 2005-10-28 06:05:57 +00:00
zend_vm.h Bump up the year 2005-08-03 13:30:58 +00:00
zend.c Fixed bug #34729 (Crash in ZTS mode under Apache) 2005-12-01 11:48:17 +00:00
Zend.dsp - MFH Move reflection to its own extension 2005-11-30 21:46:26 +00:00
zend.h - MFH move zend_object_Value definition to zend_types.h 2005-12-20 21:37:52 +00:00
zend.ico Zend Library 1999-04-07 18:10:10 +00:00
Zend.m4 reordered + added msg to configure output for PHP_ZEND_VM 2005-06-14 12:23:26 +00:00
ZendCore.dep - Rename modules.h to zend_modules.h 2001-02-26 18:18:34 +00:00
ZendTS.dsp - MFH Move reflection to its own extension 2005-11-30 21:46:26 +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().