php-src/Zend
2008-08-07 13:35:51 +00:00
..
RFCs this one is declined 2004-01-09 18:55:49 +00:00
tests Fixed bug #45744 (Case sensitive callback behaviour) 2008-08-07 12:04:14 +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 - There is a 2.3 now as well. 2006-08-04 06:48:20 +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 remove unneeded define 2008-08-01 22:43:16 +00:00
zend_alloc.h MFH: Add pestrndup() 2008-06-13 04:16:58 +00:00
zend_API.c Fixed bug #45744 (Case sensitive callback behaviour) 2008-08-07 12:04:14 +00:00
zend_API.h - MFH: Added parameter TSRMLS_DC in zend_is_callable() 2008-08-02 04:46:07 +00:00
zend_builtin_functions.c - MFH: Added parameter TSRMLS_DC in zend_is_callable() 2008-08-02 04:46:07 +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 Disable closures serialization/unserialization 2008-08-07 13:35:51 +00:00
zend_closures.h Added support for lambda functions and closures 2008-07-14 09:49:03 +00:00
zend_compile.c - No C++ comments in C files! 2008-08-03 11:48:20 +00:00
zend_compile.h - Fix __halt_compiler() weirdness with zend-mulibyte enabled 2008-07-28 05:59:17 +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 Fixed constant substitution (Matt) 2008-07-28 14:12:19 +00:00
zend_constants.h Added API to use namesapces in internal extensions 2008-05-12 07:11:55 +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 Fixed memory leak 2008-07-29 14:28:11 +00:00
zend_exceptions.h - MFH Exception handling 2008-07-13 21:42:49 +00:00
zend_execute_API.c Fixed bug #44100 (Inconsistent handling of static array declarations with duplicate keys). 2008-08-01 14:22:03 +00:00
zend_execute.c Fixed bug #44660 (Indexed and reference assignment to propery of non-object don't trigger warning) 2008-07-26 17:59:54 +00:00
zend_execute.h - Removed direct executor recursion. 2008-06-11 13:18:41 +00:00
zend_extensions.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_extensions.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_fast_cache.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_gc.c Fixed bug #45434 (circular reference causes segfault in gc_collect_cycles()) 2008-07-08 08:16:09 +00:00
zend_gc.h Speedup GC initialization 2008-04-11 17:31:53 +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 - Revived zend multibyte 2008-07-24 22:21:41 +00:00
zend_hash.c fix WS 2008-08-07 11:51:54 +00:00
zend_hash.h Fixed bug #44100 (Inconsistent handling of static array declarations with duplicate keys). 2008-08-01 14:22:03 +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 regenerate 2008-08-07 12:23:03 +00:00
zend_ini_scanner.c regenerate 2008-08-07 12:23:03 +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 fix crash: yytext can't be modified because it is mmaped(). strndup() will take care of last zero char 2008-08-07 12:22:00 +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 LSB parent/self forwarding 2008-07-24 09:42:18 +00:00
zend_interfaces.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +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 . 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_language_scanner_defs.h - Touch. 2008-07-28 07:02:05 +00:00
zend_language_scanner.c - MFH: Fixed BC break: The magic constants must be case-insensitive. 2008-07-30 01:25:49 +00:00
zend_language_scanner.h - Revived zend multibyte 2008-07-24 22:21:41 +00:00
zend_language_scanner.l - MFH: Fixed BC break: The magic constants must be case-insensitive. 2008-07-30 01:25:49 +00:00
zend_list.c MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_list.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +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 - Removed zend_arg_defs.c 2008-07-07 14:22:02 +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 is_callable/call_user_func mess that had done different things for very similar arguments e.g. array("A","B") and "A::B" 2008-07-26 13:14:04 +00:00
zend_object_handlers.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_objects_API.c everted (this part was committed by mistake) 2008-02-19 17:05:41 +00:00
zend_objects_API.h Added garbage collector 2008-01-22 09:27:48 +00:00
zend_objects.c - MFH Exception handling 2008-07-13 21:42:49 +00:00
zend_objects.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +00:00
zend_opcode.c Use IS_CV for dirrent access to $this variable 2008-05-07 12:04:39 +00:00
zend_operators.c MFH: fix bug #45712 ($something == NaN returns true with 5.3, false with 5.2.*) 2008-08-07 08:36:24 +00:00
zend_operators.h fix memnstr bug, by Laurent Gaffie 2008-08-05 20:14:27 +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 - Rewrite scanner to be based on re2c instead of flex 2008-03-16 21:06:55 +00:00
zend_stack.h MFH: Bump copyright year, 2 of 2. 2007-12-31 07:17:19 +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 2008-04-29 08:08:21 +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 Fix for bug #43487 (Wrong conversion of float to string) 2008-07-27 11:29:10 +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 . 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_vm_execute.h . 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_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: Add E_USER_DEPRECATED (patch by Lars Strojny) 2008-07-21 09:41:00 +00:00
Zend.dsp Added support for lambda functions and closures 2008-07-14 09:49:03 +00:00
zend.h Added support for lambda functions and closures 2008-07-14 09:49:03 +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().