php-src/Zend
2015-02-03 23:01:48 +08:00
..
RFCs fixed typo and few grammar mistakes 2013-10-17 22:00:40 -04:00
tests Fixed "delayed" compilation 2015-02-02 20:44:16 +03:00
acinclude.m4 remove 3.0 from excluded versions because limitation lifted by native-tls 2014-12-22 21:32:14 +00:00
bench.php
build.mk
buildconf
configure.in
header
LICENSE
Makefile.am Faster sorting algo 2015-01-14 18:02:41 +08:00
Makefile.frag
micro_bench.php
OBJECTS2_HOWTO
README.ZEND_MM
README.ZEND_VM
zend_alloc_sizes.h Replaced Zend Memory Manager 2014-08-26 16:21:58 +04:00
zend_alloc.c old_size is already known 2015-01-19 15:26:04 +03:00
zend_alloc.h bump year 2015-01-15 23:27:30 +08:00
zend_API.c Implement return types 2015-01-27 11:49:56 -07:00
zend_API.h zend_read_property() has to provide a holder for return value. 2015-01-22 11:50:42 +03:00
zend_arena.h bump year 2015-01-15 23:27:30 +08:00
zend_ast.c Implement return types 2015-01-27 11:49:56 -07:00
zend_ast.h Implement return types 2015-01-27 11:49:56 -07:00
zend_build.h bump year 2015-01-15 23:27:30 +08:00
zend_builtin_functions.c Fixed refcount handling in get_class_vars() 2015-01-23 13:32:07 +08:00
zend_builtin_functions.h bump year 2015-01-15 23:27:30 +08:00
ZEND_CHANGES typo fixes - https://github.com/vlajos/misspell_fixer 2014-11-19 20:23:00 +00:00
zend_closures.c Merge branch 'pull-request/994' 2015-01-31 23:12:00 -08:00
zend_closures.h bump year 2015-01-15 23:27:30 +08:00
zend_compile.c Optimize class lookup 2015-02-03 17:39:05 +03:00
zend_compile.h Implement return types 2015-01-27 11:49:56 -07:00
zend_config.nw.h bump year 2015-01-15 23:27:30 +08:00
zend_config.w32.h bump year 2015-01-15 23:27:30 +08:00
zend_constants.c bump year 2015-01-15 23:27:30 +08:00
zend_constants.h bump year 2015-01-15 23:27:30 +08:00
zend_default_classes.c bump year 2015-01-15 23:27:30 +08:00
zend_dtrace.c first shot remove TSRMLS_* things 2014-12-13 23:06:14 +01:00
zend_dtrace.d
zend_dtrace.h first shot remove TSRMLS_* things 2014-12-13 23:06:14 +01:00
zend_errors.h bump year 2015-01-15 23:27:30 +08:00
zend_exceptions.c zend_read_property() has to provide a holder for return value. 2015-01-22 11:50:42 +03:00
zend_exceptions.h bump year 2015-01-15 23:27:30 +08:00
zend_execute_API.c bump year 2015-01-15 23:27:30 +08:00
zend_execute.c Implement return types 2015-01-27 11:49:56 -07:00
zend_execute.h Implement return types 2015-01-27 11:49:56 -07:00
zend_extensions.c bump year 2015-01-15 23:27:30 +08:00
zend_extensions.h bump year 2015-01-15 23:27:30 +08:00
zend_float.c bump year 2015-01-15 23:27:30 +08:00
zend_float.h bump year 2015-01-15 23:27:30 +08:00
zend_gc.c Make gc_collect_cycles hookable. 2015-01-23 19:23:58 +00:00
zend_gc.h Make gc_collect_cycles hookable. 2015-01-23 19:23:58 +00:00
zend_generators.c bump year 2015-01-15 23:27:30 +08:00
zend_generators.h bump year 2015-01-15 23:27:30 +08:00
zend_globals_macros.h Add missing ZEND_API tag to declaration of int zendparse(); 2015-01-22 14:04:49 -08:00
zend_globals.h bump year 2015-01-15 23:27:30 +08:00
zend_hash.c bump year 2015-01-15 23:27:30 +08:00
zend_hash.h bump year 2015-01-15 23:27:30 +08:00
zend_highlight.c bump year 2015-01-15 23:27:30 +08:00
zend_highlight.h bump year 2015-01-15 23:27:30 +08:00
zend_indent.c bump year 2015-01-15 23:27:30 +08:00
zend_indent.h bump year 2015-01-15 23:27:30 +08:00
zend_inheritance.c Add check for null pointer, as done in case 5 lines above. 2015-01-30 13:30:17 +11:00
zend_inheritance.h bump year 2015-01-15 23:27:30 +08:00
zend_ini_parser.y bump year 2015-01-15 23:27:30 +08:00
zend_ini_scanner_defs.h Merge branch 'PHP-5.5' into PHP-5.6 2014-03-10 12:18:57 +01:00
zend_ini_scanner.c Fixed bug #68805 (Double define) 2015-01-17 23:06:37 -05:00
zend_ini_scanner.h bump year 2015-01-15 23:27:30 +08:00
zend_ini_scanner.l Fixed bug #68805 (Double define) 2015-01-17 23:06:37 -05:00
zend_ini.c bump year 2015-01-15 23:27:30 +08:00
zend_ini.h bump year 2015-01-15 23:27:30 +08:00
zend_interfaces.c bump year 2015-01-15 23:27:30 +08:00
zend_interfaces.h bump year 2015-01-15 23:27:30 +08:00
zend_istdiostream.h bump year 2015-01-15 23:27:30 +08:00
zend_iterators.c bump year 2015-01-15 23:27:30 +08:00
zend_iterators.h bump year 2015-01-15 23:27:30 +08:00
zend_language_parser.y Implement return types 2015-01-27 11:49:56 -07:00
zend_language_scanner_defs.h Fixed annoying incompatible pointer type warning 2015-01-18 07:24:57 -05:00
zend_language_scanner.c Fixed compiler reenterability 2015-01-22 20:39:34 +03:00
zend_language_scanner.h Fixed compiler reenterability 2015-01-22 20:39:34 +03:00
zend_language_scanner.l Fixed compiler reenterability 2015-01-22 20:39:34 +03:00
zend_list.c found type is unnecessary 2015-02-02 14:45:19 +08:00
zend_list.h found type is unnecessary 2015-02-02 14:45:19 +08:00
zend_llist.c bump year 2015-01-15 23:27:30 +08:00
zend_llist.h bump year 2015-01-15 23:27:30 +08:00
zend_long.h rely on macros from stdint for int constants on 64 bit 2015-02-02 09:39:33 +01:00
zend_modules.h bump year 2015-01-15 23:27:30 +08:00
zend_multibyte.c bump year 2015-01-15 23:27:30 +08:00
zend_multibyte.h bump year 2015-01-15 23:27:30 +08:00
zend_multiply.h bump year 2015-01-15 23:27:30 +08:00
zend_object_handlers.c Fixed Magic getter bug tickled by Moodle 2015-01-31 18:12:31 +08:00
zend_object_handlers.h bump year 2015-01-15 23:27:30 +08:00
zend_objects_API.c bump year 2015-01-15 23:27:30 +08:00
zend_objects_API.h bump year 2015-01-15 23:27:30 +08:00
zend_objects.c bump year 2015-01-15 23:27:30 +08:00
zend_objects.h bump year 2015-01-15 23:27:30 +08:00
zend_opcode.c Merge branch 'typed_returns' of github.com:morrisonlevi/php-src into test 2015-01-28 06:56:19 +03:00
zend_operators.c Remove support for hex number from is_numeric_string 2015-01-28 22:54:17 +01:00
zend_operators.h bump year 2015-01-15 23:27:30 +08:00
zend_portability.h bump year 2015-01-15 23:27:30 +08:00
zend_ptr_stack.c bump year 2015-01-15 23:27:30 +08:00
zend_ptr_stack.h bump year 2015-01-15 23:27:30 +08:00
zend_signal.c first shot remove TSRMLS_* things 2014-12-13 23:06:14 +01:00
zend_signal.h first shot remove TSRMLS_* things 2014-12-13 23:06:14 +01:00
zend_smart_str_public.h bump year 2015-01-15 23:27:30 +08:00
zend_smart_str.h bump year 2015-01-15 23:27:30 +08:00
zend_sort.c Only use explicit ">" in sorting algo 2015-01-19 03:32:28 -05:00
zend_sort.h bump year 2015-01-15 23:27:30 +08:00
zend_sprintf.c bump year 2015-01-15 23:27:30 +08:00
zend_stack.c bump year 2015-01-15 23:27:30 +08:00
zend_stack.h bump year 2015-01-15 23:27:30 +08:00
zend_stream.c bump year 2015-01-15 23:27:30 +08:00
zend_stream.h bump year 2015-01-15 23:27:30 +08:00
zend_string.c bump year 2015-01-15 23:27:30 +08:00
zend_string.h bump year 2015-01-15 23:27:30 +08:00
zend_strtod.c trailing whitespace removal 2015-01-10 15:07:38 -08:00
zend_strtod.h bump year 2015-01-15 23:27:30 +08:00
zend_ts_hash.c bump year 2015-01-15 23:27:30 +08:00
zend_ts_hash.h bump year 2015-01-15 23:27:30 +08:00
zend_types.h bump year 2015-01-15 23:27:30 +08:00
zend_variables.c Fix resource leak when casting to string 2015-01-24 23:18:26 +01:00
zend_variables.h bump year 2015-01-15 23:27:30 +08:00
zend_virtual_cwd.c bump year 2015-01-15 23:27:30 +08:00
zend_virtual_cwd.h bump year 2015-01-15 23:27:30 +08:00
zend_vm_def.h Fixed unused opline warning 2015-01-31 16:50:17 +08:00
zend_vm_execute.h Fixed unused opline warning 2015-01-31 16:50:17 +08:00
zend_vm_execute.skl first shot remove TSRMLS_* things 2014-12-13 23:06:14 +01:00
zend_vm_gen.php bump year 2015-01-15 23:27:30 +08:00
zend_vm_opcodes.c Implement return types 2015-01-27 11:49:56 -07:00
zend_vm_opcodes.h Implement return types 2015-01-27 11:49:56 -07:00
zend_vm.h bump year 2015-01-15 23:27:30 +08:00
zend.c Make gc_collect_cycles hookable. 2015-01-23 19:23:58 +00:00
zend.h bump year 2015-01-15 23:27:30 +08:00
zend.ico
Zend.m4 master renames phase 1 2014-08-25 19:24:55 +02:00
ZendCore.dep

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 calls 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().