php-src/Zend
Felipe Pena 34742e3f13 MFH:
- Changed 'strlen' to use ZEND_FUNCTION(strlen)
- Removed duplicated arginfo structs
2008-11-17 22:21:55 +00:00
..
RFCs this one is declined 2004-01-09 18:55:49 +00:00
tests Improve use syntax 2008-11-17 18:00:44 +00:00
acconfig.h Improved PHP binary size and startup speed with GCC4 visibility control (Nuno) 2008-01-30 09:41:12 +00:00
acinclude.m4 - Make it work with bison 2.4. 2008-11-10 12:05:28 +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 - Update copyright notices to 2006 2006-01-04 23:53:05 +00:00
LICENSE - More -> 2006 changes 2006-01-05 02:34:02 +00:00
Makefile.am Added support for lambda functions and closures 2008-07-14 09:49:03 +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 Fixed ability to use "internal" heaps in extensions. 2008-10-30 08:55:20 +00:00
zend_alloc.h MFH: Fix compile error 2008-10-27 14:59:03 +00:00
zend_API.c - Next step in namespaces, using / as namespace separator. 2008-11-04 15:58:55 +00:00
zend_API.h - MFH: Added 'static' into ZEND_BEGIN_ARG_INFO_EX macro 2008-11-17 11:28:01 +00:00
zend_builtin_functions.c MFH: 2008-11-17 22:21:55 +00:00
zend_builtin_functions.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
ZEND_CHANGES Add some information about array overloading 2004-08-30 18:48:52 +00:00
zend_closures.c Fixed possible crash because of overriden error handler 2008-09-17 13:08:54 +00:00
zend_closures.h - Made closures implementation reflection friendly (Christian) 2008-08-11 08:49:00 +00:00
zend_compile.c fix potential crash in zend_do_assign due to opcodes realloc 2008-11-12 00:44:56 +00:00
zend_compile.h Namespace resolution streamlining patch 2008-11-11 19:45:29 +00:00
zend_config.nw.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_config.w32.h vc9 build fix 2008-07-17 17:48:50 +00:00
zend_constants.c Namespace resolution streamlining patch 2008-11-11 19:45:29 +00:00
zend_constants.h - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_default_classes.c Added support for lambda functions and closures 2008-07-14 09:49:03 +00:00
zend_dynamic_array.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_dynamic_array.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_errors.h MFH: Add E_USER_DEPRECATED (patch by Lars Strojny) 2008-07-21 09:41:00 +00:00
zend_exceptions.c - MFH: Added 'static' into ZEND_BEGIN_ARG_INFO_EX macro 2008-11-17 11:28:01 +00:00
zend_exceptions.h - MFH Improve exception linking 2008-08-14 10:24:52 +00:00
zend_execute_API.c make sure the slash is actually thre before reading past it 2008-11-12 09:05:48 +00:00
zend_execute.c - MFH: Removed some TSRMLS_FETCH()s 2008-08-15 19:47:33 +00:00
zend_execute.h - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_extensions.c - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_extensions.h - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_fast_cache.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_gc.c - MFH Fix issue with destruction of overloaded objects 2008-08-24 16:49:19 +00:00
zend_gc.h - MFH: Removed some TSRMLS_FETCH()s 2008-08-15 19:47:33 +00:00
zend_globals_macros.h - Rewrite scanner to be based on re2c instead of flex 2008-03-16 21:06:55 +00:00
zend_globals.h - MFH Improve exception linking 2008-08-14 10:24:52 +00:00
zend_hash.c - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_hash.h - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_highlight.c . Added support for using static HEREDOCs to initialize static variables and class members or constants. (Matt) 2008-07-26 15:30:28 +00:00
zend_highlight.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_indent.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_indent.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_ini_parser.y - Rewrite scanner to be based on re2c instead of flex 2008-03-16 21:06:55 +00:00
zend_ini_scanner_defs.h sync zend_ini_scanner.c 2008-11-05 21:36:11 +00:00
zend_ini_scanner.c sync zend_ini_scanner.c 2008-11-05 21:36:11 +00:00
zend_ini_scanner.h - Rewrite scanner to be based on re2c instead of flex 2008-03-16 21:06:55 +00:00
zend_ini_scanner.l MFH: Added parse_ini_string() function (grange at lemonde dot fr, Arnaud) 2008-11-05 21:35:02 +00:00
zend_ini.c Tweak last commit, should always return NULL when an entry doesn't exist. 2008-07-07 21:50:56 +00:00
zend_ini.h Add zend_ini_string_ex so that the you can differentiate between NULL as a value and its absence, this is important for ini_get. Related to bug #42657 and #43348 2008-07-07 21:37:46 +00:00
zend_interfaces.c - MFH: Added 'static' into ZEND_BEGIN_ARG_INFO_EX macro 2008-11-17 11:28:01 +00:00
zend_interfaces.h MFH: 2008-08-24 18:22:33 +00:00
zend_istdiostream.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_iterators.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_iterators.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_language_parser.y Improve use syntax 2008-11-17 18:00:44 +00:00
zend_language_scanner_defs.h - Next step in namespaces, using / as namespace separator. 2008-11-04 15:58:55 +00:00
zend_language_scanner.c - Next step in namespaces, using / as namespace separator. 2008-11-04 15:58:55 +00:00
zend_language_scanner.h - Revived zend multibyte 2008-07-24 22:21:41 +00:00
zend_language_scanner.l - Next step in namespaces, using / as namespace separator. 2008-11-04 15:58:55 +00:00
zend_list.c Removed redundant code 2008-08-22 15:28:29 +00:00
zend_list.h MFH: 2008-11-11 13:28:22 +00:00
zend_llist.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_llist.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_modules.h - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_multibyte.c - Revived zend multibyte 2008-07-24 22:21:41 +00:00
zend_multibyte.h - Revived zend multibyte 2008-07-24 22:21:41 +00:00
zend_multiply.h Optimized ZEND_SIGNED_MULTIPLY_LONG() (Matt) 2008-07-24 13:46:28 +00:00
zend_object_handlers.c Fixed bug #46308 (Invalid write when changing property from inside getter) 2008-10-17 10:26:07 +00:00
zend_object_handlers.h MFH: Handlerify get_closure 2008-08-14 21:36:56 +00:00
zend_objects_API.c - MFH Fix issue with destruction of overloaded objects 2008-08-24 16:49:19 +00:00
zend_objects_API.h - MFH Fix issue with destruction of overloaded objects 2008-08-24 16:49:19 +00:00
zend_objects.c - MFH Fix issue with destruction of overloaded objects 2008-08-24 16:49:19 +00:00
zend_objects.h - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_opcode.c MFH: - Updated unary_op_type typedef with TSRMLS_DC 2008-08-29 18:12:47 +00:00
zend_operators.c - MFH: Removed some TSRMLS_FETCH()s 2008-08-15 19:47:33 +00:00
zend_operators.h - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_ptr_stack.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_ptr_stack.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_qsort.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_qsort.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_sprintf.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_stack.c - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_stack.h - MFH: Constness (Added const qualifier to several function parameters) 2008-08-12 17:20:25 +00:00
zend_static_allocator.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_static_allocator.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_stream.c MFH: Fixed #45928 (large scripts from stdin are stripped at 16K border) 2008-09-10 10:28:39 +00:00
zend_stream.h add sanity checks for ZEND_MMAP_AHEAD and reduce the value from 32 to 16 (lowest safe value) 2008-04-04 15:01:23 +00:00
zend_strtod.c Fixed bug #43053 (Regression: some numbers shown in scientific notation). (int-e at gmx dot de) 2008-09-15 11:47:16 +00:00
zend_strtod.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_ts_hash.c - MFH: Added TSRMLS_DC to apply_func_args_t and zend_hash_apply_with_arguments. 2008-07-24 19:52:24 +00:00
zend_ts_hash.h - MFH: Added TSRMLS_DC to apply_func_args_t and zend_hash_apply_with_arguments. 2008-07-24 19:52:24 +00:00
zend_types.h Optimized ZEND_SIGNED_MULTIPLY_LONG() (Matt) 2008-07-24 13:46:28 +00:00
zend_variables.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_variables.h - Fix the header (thanks Johannes) 2008-07-20 15:10:24 +00:00
zend_vm_def.h fix memleak 2008-11-11 21:11:24 +00:00
zend_vm_execute.h fix memleak 2008-11-11 21:11:24 +00:00
zend_vm_execute.skl - Removed direct executor recursion. 2008-06-11 13:18:41 +00:00
zend_vm_gen.php - MFH Little debug hack to allow printing vm function 2008-07-21 08:14:24 +00:00
zend_vm_opcodes.h Added support for lambda functions and closures 2008-07-14 09:49:03 +00:00
zend_vm.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend.c - MFH: Removed some TSRMLS_FETCH()s 2008-08-15 19:47:33 +00:00
Zend.dsp Added support for lambda functions and closures 2008-07-14 09:49:03 +00:00
zend.h Namespace resolution streamlining patch 2008-11-11 19:45:29 +00:00
zend.ico
Zend.m4 implemented again zend-multibyte for PHP 5.3 2008-06-29 08:21:35 +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().