php-src/Zend
2016-11-28 12:54:47 +03:00
..
RFCs
tests Fixed calling generators through magic __call() 2016-11-28 12:20:19 +03:00
acinclude.m4
bench.php
build.mk
buildconf
configure.in
header
LICENSE
Makefile.am
Makefile.frag
micro_bench.php
OBJECTS2_HOWTO
README.ZEND_MM
README.ZEND_VM
zend_alloc_sizes.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_alloc.c Fixded bug #72736 (Slow performance when fetching large dataset with mysqli / PDO) 2016-10-26 15:17:09 +03:00
zend_alloc.h Fix various int size overflows. 2016-09-12 21:04:23 -07:00
zend_API.c Fix bug #73147: Use After Free in PHP7 unserialize() 2016-10-12 17:51:15 +02:00
zend_API.h Fix bug #73147: Use After Free in PHP7 unserialize() 2016-10-12 17:51:15 +02:00
zend_arena.h Fixed bug (Low probability segfault in zend_arena) 2016-02-09 12:20:11 +08:00
zend_ast.c Merge branch 'PHP-5.6' into PHP-7.0 2016-09-28 23:22:11 +02:00
zend_ast.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_bitset.h Reduce memory usage by using bitsets instead of array of bytes. 2015-08-06 15:41:50 +03:00
zend_build.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_builtin_functions.c Fixed bug #73156 (segfault on undefined function) 2016-09-26 14:14:57 +03:00
zend_builtin_functions.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
ZEND_CHANGES
zend_closures.c Fix __invoke comparison in closure_get_method 2016-03-30 18:32:00 +02:00
zend_closures.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_compile.c Fixed bug #73585 (Logging of "Internal Zend error - Missing class information" missing class name) 2016-11-24 12:02:02 +08:00
zend_compile.h Fix the constant array case as well 2016-09-28 23:05:21 +02:00
zend_config.nw.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_config.w32.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_constants.c Fix leak in zend_get_constant_ex 2016-05-02 19:59:43 +02:00
zend_constants.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_default_classes.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_dtrace.c Superfluous semicolon 2015-12-24 10:41:05 +08:00
zend_dtrace.d
zend_dtrace.h
zend_errors.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_exceptions.c Fixed bug #73350 (Exception::__toString() cause circular references) 2016-10-22 14:50:21 +08:00
zend_exceptions.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_execute_API.c Revert "Remove a few unused write warning (backport from master, oops)s" 2016-11-20 19:09:05 +01:00
zend_execute.c Fixed memory leak (Bob) 2016-11-22 11:22:10 +03:00
zend_execute.h allow null coalescing (??) on constant expressions 2016-04-21 01:22:28 +02:00
zend_extensions.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_extensions.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_float.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_float.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_gc.c Fixed a potential segfault in zend_objects_store_free_object_storage() 2016-07-27 18:08:43 +02:00
zend_gc.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_generators.c Remove zpp fallback code (always use Fast ZPP) 2016-09-11 22:44:46 +01:00
zend_generators.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_globals_macros.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_globals.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_hash.c Fix bug #73181 2016-09-27 19:47:48 +02:00
zend_hash.h Fixed bug #73586 (php_user_filter::$stream is not set to the stream the filter is working on). 2016-11-28 12:54:47 +03:00
zend_highlight.c Fixed bug #71806 2016-03-11 22:45:38 +01:00
zend_highlight.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_inheritance.c Fix bug #69579 2016-09-22 12:38:07 +02:00
zend_inheritance.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_ini_parser.y Fixed use after free 2016-11-22 13:28:27 +03:00
zend_ini_scanner_defs.h Regenerated scanner 2016-11-18 16:19:46 +03:00
zend_ini_scanner.c Regenerated scanner 2016-11-18 16:19:46 +03:00
zend_ini_scanner.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_ini_scanner.l Fixed memory leaks in parse_ini_file() 2016-11-18 16:17:52 +03:00
zend_ini.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_ini.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_interfaces.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_interfaces.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_istdiostream.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_iterators.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_iterators.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_language_parser.y Remove __halt_compiler from semi-reserved tokens 2016-04-07 05:52:32 +02:00
zend_language_scanner_defs.h Fix line number of implicit return in pseudo-main scope 2016-10-12 22:25:41 +02:00
zend_language_scanner.c Fix line number of implicit return in pseudo-main scope 2016-10-12 22:25:41 +02:00
zend_language_scanner.h Drop dup declare with inconsistent linkage 2016-05-02 11:56:28 +02:00
zend_language_scanner.l Fix line number of implicit return in pseudo-main scope 2016-10-12 22:25:41 +02:00
zend_list.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_list.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_llist.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_llist.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_long.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_modules.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_multibyte.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_multibyte.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_multiply.h More int->size_t and string overflow fixes 2016-11-05 14:00:47 -07:00
zend_object_handlers.c Fix memory leak(null coalescing operator with Spl hash) 2016-11-20 15:46:13 -08:00
zend_object_handlers.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_objects_API.c Fix bug #73052 - Memory Corruption in During Deserialized-object Destruction 2016-09-12 21:04:23 -07:00
zend_objects_API.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_objects.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_objects.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_opcode.c Fixed bug #71441 (Typehinted Generator with return in try/finally crashes) 2016-01-24 19:55:16 +01:00
zend_operators.c Fix bug #72221 (segfault, past-the-end access) 2016-05-28 16:10:16 +08:00
zend_operators.h Disable add/sub asm for gcc 4.9 pic/pie builds 2016-09-16 21:06:02 +02:00
zend_portability.h Revert "Revert "Remove a few unused write warning"" 2016-11-20 19:18:50 +01:00
zend_ptr_stack.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_ptr_stack.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_range_check.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_signal.c fix for --enable-zend-signals and ZTS 2015-09-01 16:51:40 +01:00
zend_signal.h fix for --enable-zend-signals and ZTS 2015-09-01 16:51:40 +01:00
zend_smart_str_public.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_smart_str.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_smart_str.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_sort.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_sort.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_sprintf.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_stack.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_stack.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_stream.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_stream.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_string.c Revert "export symbol missing by phpdbg" 2016-10-13 09:50:32 +02:00
zend_string.h Revert "export symbol missing by phpdbg" 2016-10-13 09:50:32 +02:00
zend_strtod_int.h Fixed bug #73329 (Float)"Nano" == NAN 2016-10-18 19:11:18 +02:00
zend_strtod.c More int->size_t and string overflow fixes 2016-11-05 14:00:47 -07:00
zend_strtod.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_ts_hash.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_ts_hash.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_types.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_variables.c Make zval_ptr_dtor / _zval_dtor_func more robust 2016-09-17 22:33:41 +02:00
zend_variables.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_virtual_cwd.c Merge branch 'PHP-5.6' into PHP-7.0 2016-09-06 12:11:24 +02:00
zend_virtual_cwd.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_vm_def.h Fixed calling generators through magic __call() 2016-11-28 12:20:19 +03:00
zend_vm_execute.h Fixed calling generators through magic __call() 2016-11-28 12:20:19 +03:00
zend_vm_execute.skl
zend_vm_gen.php bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_vm_opcodes.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_vm_opcodes.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_vm.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend.c Disabled PHP call tracing by default (it makes significant overhead). 2016-11-18 13:19:30 +03:00
zend.h Move semicolon into TSRMLS_CACHE_EXTERN/DEFINE 2016-03-03 16:50:01 +01:00
zend.ico
Zend.m4 Support for XLC compiler 2015-08-10 19:12:11 +03:00
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().