php-src/Zend
Antony Dovgal b0f688006d fix test
2006-11-30 13:09:24 +00:00
..
RFCs this one is declined 2004-01-09 18:55:49 +00:00
tests fix test 2006-11-30 13:09:24 +00:00
acconfig.h - Update copyright notices to 2006 2006-01-04 23:54:12 +00:00
acinclude.m4 - MFB: Bison 2.3 is working as well. 2006-08-04 06:49:28 +00:00
bench.php fixed compatibility with ext/hash 2006-03-06 09:58:27 +00:00
build.mk
buildconf
ChangeLog ChangeLog update 2006-11-29 01:31:10 +00:00
configure.in - Compile fix for systems without uint32_t typedef 2005-01-22 20:28:17 +00:00
flex.skl Unicode support 2005-08-11 23:35:03 +00:00
FlexLexer.h
header - Update copyright notices to 2006 2006-01-04 23:54:12 +00:00
LICENSE - More -> 2006 changes 2006-01-05 02:35:02 +00:00
Makefile.am - Move Reflection into its own extension 2005-11-17 22:59:39 +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 - Capture Dmitry's Zend MM email for later reference 2006-07-18 16:54:37 +00:00
README.ZEND_VM Nuked DOS EOLs 2005-08-03 13:29:00 +00:00
zend_alloc.c Fixed bug #39534 (Error in maths to calculate of ZEND_MM_ALIGNED_MIN_HEADER_SIZE). (wharmby at uk dot ibm dot com) 2006-11-23 09:33:01 +00:00
zend_alloc.h Make zend_memory_peak_usage() to be avalable even without --enable-memory-limit 2006-10-12 06:47:04 +00:00
zend_API.c fix leak in zend_register_functions() 2006-11-20 22:08:27 +00:00
zend_API.h Unicode support. 2006-11-17 10:48:53 +00:00
zend_arg_defs.c MFB 2006-04-06 21:16:28 +00:00
zend_builtin_functions.c resolve coverity issue #224 2006-11-28 21:19:58 +00:00
zend_builtin_functions.h - Update copyright notices to 2006 2006-01-04 23:54:12 +00:00
ZEND_CHANGES Add some information about array overloading 2004-08-30 18:48:52 +00:00
zend_compile.c Unicode support. 2006-11-17 10:48:53 +00:00
zend_compile.h Unicode support. 2006-11-17 10:48:53 +00:00
zend_config.nw.h WS 2006-02-21 08:00:39 +00:00
zend_config.w32.h New memory manager 2006-07-18 09:08:06 +00:00
zend_constants.c Unicode support. 2006-11-17 10:48:53 +00:00
zend_constants.h - Fix #38465 (ReflectionParameter fails if default value is an access to self:: 2006-10-18 16:34:25 +00:00
zend_default_classes.c Support warning/exceptions flag for conversion errors. 2006-03-24 07:38:07 +00:00
zend_dynamic_array.c WS 2006-02-21 08:00:39 +00:00
zend_dynamic_array.h WS 2006-02-21 08:00:39 +00:00
zend_errors.h Added E_STRICT to E_ALL 2006-03-16 12:12:31 +00:00
zend_exceptions.c Disabled autoconversion of hash keys (from string to unicode) for PHP arrays 2006-09-19 10:38:31 +00:00
zend_exceptions.h - zend_spprintf() is actually used elsewhere in the engine 2006-05-09 22:09:49 +00:00
zend_execute_API.c Start timiout thread on Windows only if necessary 2006-11-10 11:51:55 +00:00
zend_execute.c MFB: Fixed bug #33282 (Re-assignment by reference does not clear the is_ref 2006-11-07 20:28:40 +00:00
zend_execute.h Put zend_lookup_class_ex back into the API for BC. 2006-11-08 10:09:17 +00:00
zend_extensions.c WS 2006-02-21 08:00:39 +00:00
zend_extensions.h Optimized zend_try/zend_catch macroses (eliminated memcpy()) 2006-05-19 06:11:02 +00:00
zend_fast_cache.h New memory manager 2006-07-18 09:08:06 +00:00
zend_globals_macros.h New memory manager 2006-07-18 09:08:06 +00:00
zend_globals.h Turn doc comments into zstr strings with corresponding adjustments. 2006-10-27 21:22:05 +00:00
zend_hash.c HashTable copying optimization (Matt Wilmas) 2006-11-08 16:02:29 +00:00
zend_hash.h rename REAL_KEY_SIZE() to USTR_BYTES() and move to zend_unicode.h 2006-10-20 10:33:31 +00:00
zend_highlight.c Portable unicode string API: 2006-02-21 20:12:43 +00:00
zend_highlight.h WS 2006-02-21 08:00:39 +00:00
zend_indent.c WS 2006-02-21 08:00:39 +00:00
zend_indent.h WS 2006-02-21 08:00:39 +00:00
zend_ini_parser.y Fixed bug #37002 (Have to quote literals in INI when concatenating with vars) 2006-04-12 09:52:06 +00:00
zend_ini_scanner.h Made server wide switch for unicode on/off (according to PDM). 2006-02-13 10:23:59 +00:00
zend_ini_scanner.l Preparation for portable string API (use macroses to access zval). 2006-02-20 19:03:43 +00:00
zend_ini.c Fixed bug #39344 (Unnecessary calls to OnModify callback routine for an extension INI directive). (wharmby at uk dot ibm dot com, Dmitry) 2006-11-08 11:04:42 +00:00
zend_ini.h WS 2006-02-21 08:00:39 +00:00
zend_interfaces.c fix #38624 (Strange warning when incrementing an object property and exception is thrown from __get method) 2006-08-28 10:25:49 +00:00
zend_interfaces.h Portable unicode string API: 2006-02-21 20:12:43 +00:00
zend_istdiostream.h WS 2006-02-21 08:00:39 +00:00
zend_iterators.c - MFB: WS 2006-05-09 21:26:39 +00:00
zend_iterators.h Portable unicode string API: 2006-02-21 20:12:43 +00:00
zend_language_parser.y Add (binary) cast operator. 2006-03-23 21:54:00 +00:00
zend_language_scanner.h WS 2006-02-21 08:00:39 +00:00
zend_language_scanner.l nullify opened_path and filename (when required) 2006-11-23 22:04:32 +00:00
zend_list.c Unicode support 2006-02-26 07:23:33 +00:00
zend_list.h WS 2006-02-21 08:00:39 +00:00
zend_llist.c WS 2006-02-21 08:00:39 +00:00
zend_llist.h WS 2006-02-21 08:00:39 +00:00
zend_mm.c New memory manager 2006-07-18 09:08:06 +00:00
zend_mm.h New memory manager 2006-07-18 09:08:06 +00:00
zend_modules.h fix typo 2006-06-22 21:24:12 +00:00
zend_multiply.h - Update copyright notices to 2006 2006-01-04 23:54:12 +00:00
zend_object_handlers.c Unicode support 2006-11-10 14:21:13 +00:00
zend_object_handlers.h - Add an extra parameter to the cast_object handler that can be used by 2006-10-13 14:52:19 +00:00
zend_objects_API.c Fixed bug #39602 (Invalid session.save_handler crashes PHP) 2006-11-23 08:07:16 +00:00
zend_objects_API.h Fixed bug #38287 (static variables mess up global vars) 2006-08-07 15:15:36 +00:00
zend_objects.c Fixed bug #38220 (Crash on some object operations) 2006-07-26 15:29:39 +00:00
zend_objects.h MF51: fix bug #36898 (__set() leaks in classes extending internal ones) 2006-03-29 15:08:52 +00:00
zend_opcode.c Unicode support. 2006-11-17 10:48:53 +00:00
zend_operators.c fix leak appearing when converting object to NULL 2006-11-15 17:28:56 +00:00
zend_operators.h convert_to_string_with_converter_ex() 2006-09-08 17:19:42 +00:00
zend_ptr_stack.c WS 2006-02-21 08:00:39 +00:00
zend_ptr_stack.h WS 2006-02-21 08:00:39 +00:00
zend_qsort.c WS 2006-02-21 08:00:39 +00:00
zend_qsort.h WS 2006-02-21 08:00:39 +00:00
zend_sprintf.c WS 2006-02-21 08:00:39 +00:00
zend_stack.c WS 2006-02-21 08:00:39 +00:00
zend_stack.h WS 2006-02-21 08:00:39 +00:00
zend_static_allocator.c - Update copyright notices to 2006 2006-01-04 23:54:12 +00:00
zend_static_allocator.h - Update copyright notices to 2006 2006-01-04 23:54:12 +00:00
zend_stream.c WS 2006-02-21 08:00:39 +00:00
zend_stream.h WS 2006-02-21 08:00:39 +00:00
zend_strtod.c MF51: fix #37062 (compile failure on ARM architecture) 2006-04-15 12:54:26 +00:00
zend_strtod.h WS 2006-02-21 08:00:39 +00:00
zend_strtol.c Patch from Matt W to fix the case of hitting ERANGE too early. 2006-10-06 17:23:05 +00:00
zend_ts_hash.c WS 2006-02-21 08:00:39 +00:00
zend_ts_hash.h WS 2006-02-21 08:00:39 +00:00
zend_types.h - Update copyright notices to 2006 2006-01-04 23:54:12 +00:00
zend_unicode.c Fix off-by-one error. 2006-09-29 20:59:26 +00:00
zend_unicode.h add two more unicode related macros 2006-11-09 23:50:47 +00:00
zend_variables.c Speedup array/HashTable copying. (Matt W) 2006-10-03 11:10:54 +00:00
zend_variables.h WS 2006-02-21 08:00:39 +00:00
zend_vm_def.h Fixed bug #39304 (Segmentation fault with list unpacking of string offset) 2006-10-30 11:04:47 +00:00
zend_vm_execute.h Fixed bug #39304 (Segmentation fault with list unpacking of string offset) 2006-10-30 11:04:47 +00:00
zend_vm_execute.skl Disabled autoconversion of hash keys (from string to unicode) for PHP arrays 2006-09-19 10:38:31 +00:00
zend_vm_gen.php Fixed non-specialized executor 2006-09-18 12:03:21 +00:00
zend_vm_opcodes.h Implemented "jump label" operator (limited "goto") 2006-03-10 08:29:43 +00:00
zend_vm.h - Update copyright notices to 2006 2006-01-04 23:54:12 +00:00
zend.c initialize CG(literal_type) using ZEND_STR_TYPE macro 2006-11-24 11:36:40 +00:00
Zend.dsp Added zend_strtod.* to the build 2004-11-04 02:05:36 +00:00
zend.h Turn doc comments into zstr strings with corresponding adjustments. 2006-10-27 21:22:05 +00:00
zend.ico
Zend.m4 *** empty log message *** 2006-09-14 09:59:23 +00:00
ZendCore.dep
ZendTS.dsp Added zend_strtod.* to the build 2004-11-04 02:05:36 +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().