php-src/Zend
Dmitry Stogov b5bab0fce8 Merge branch 'PHP-7.0' into PHP-7.1
* PHP-7.0:
  Fixed bug #72944 (Null pointer deref in zval_delref_p).
2016-08-29 12:07:54 +03:00
..
RFCs
tests Merge branch 'PHP-7.0' into PHP-7.1 2016-08-29 12:07:54 +03:00
acinclude.m4
bench.php
build.mk
buildconf
configure.in Prefer isfinite to finite 2015-05-18 10:44:42 +08:00
header
LICENSE
Makefile.am Changed zend_smart_str allocation granularity to do the better job together with Zend MM and avoid useless calls to erealloc(). 2015-04-16 14:45:08 +03:00
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 Merge branch 'PHP-7.0' into PHP-7.1 2016-08-17 17:14:30 +08:00
zend_alloc.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_API.c Merge branch 'PHP-7.0' 2016-07-14 21:41:49 +02:00
zend_API.h Merge branch 'master' into iterable 2016-07-03 22:42:10 -05:00
zend_arena.h Fixed bug (Low probability segfault in zend_arena) 2016-02-09 12:20:11 +08:00
zend_ast.c Allow for [] = $array; (alias for list()) 2016-05-20 01:51:05 +02:00
zend_ast.h Improve the signature 2016-06-14 08:05:17 -07:00
zend_bitset.h Fix correctness issues with type narrowing 2016-06-06 14:56:17 +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 use after free 2016-08-16 11:44:22 +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 Closure::fromCallable(): Getting non-static method statically 2016-07-05 15:52:03 +02:00
zend_closures.h Merge branch 'PHP-7.0' 2016-01-02 17:56:54 +08:00
zend_compile.c Merge branch 'PHP-7.0' into PHP-7.1 2016-08-29 12:07:54 +03:00
zend_compile.h Merge branch 'PHP-7.0' into PHP-7.1 2016-08-29 12:07:54 +03:00
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 on self-referencing constants 2016-08-03 23:10:09 +02:00
zend_constants.h Merge branch 'PHP-7.0' 2016-01-02 17:56:54 +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 Fixed phpdbg build broken when dtrace enabled 2015-04-07 23:04:34 +08:00
zend_errors.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_exceptions.c Merge branch 'PHP-7.0' 2016-07-14 18:39:48 +02:00
zend_exceptions.h Added ZEND_ATTRIBUTE_FORMAT to some middind functions. 2016-06-21 16:00:37 +03:00
zend_execute_API.c call_user_func(_array): Don't abort on reference warning 2016-08-23 10:29:15 +03:00
zend_execute.c Merge branch 'PHP-7.0' into PHP-7.1 2016-08-26 18:32:54 +08:00
zend_execute.h Implemented RFC: Replace "Missing argument" warning with "Too few arguments" exception 2016-06-16 02:32:02 +03:00
zend_extensions.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_extensions.h change fcall and statement handlers to accept frame 2016-05-04 09:28:13 +01:00
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 Merge remote-tracking branch 'origin/PHP-7.0' into PHP-7.1 2016-07-27 18:18:47 +02:00
zend_gc.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_generators.c Fixed C89 build 2016-08-17 13:43:50 +02:00
zend_generators.h Eliminated checks for (func->op_array.fn_flags & ZEND_ACC_GENERATOR) in fast path of DO_FCALL* handlers. 2016-05-13 01:40:15 +03:00
zend_globals_macros.h Remove some dead defines 2016-03-26 22:45:23 +01:00
zend_globals.h Make sure TOKEN_PARSE mode is thread safe 2016-07-23 00:00:13 +02:00
zend_hash.c Merge branch 'PHP-7.0' into PHP-7.1 2016-08-29 00:10:57 +08:00
zend_hash.h Fixed compilation warnings 2016-06-21 16:55:17 +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 Merge branch 'PHP-7.0' 2016-07-05 14:34:20 +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 Use non-deprecated %pure-parser 2016-08-11 18:29:55 +02:00
zend_ini_scanner_defs.h Fixed bug #70748 (Segfault in ini_lex () at Zend/zend_ini_scanner.l) 2015-10-20 13:20:56 +08:00
zend_ini_scanner.c bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_ini_scanner.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_ini_scanner.l bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
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 Removed "zend_fcall_info.function_table". It was assigned in many places, but is never used. 2016-04-27 13:46:38 +03:00
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 Replaced wrong check with proper ZEND_ASSERT() 2016-06-08 12:11:47 +03:00
zend_iterators.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_language_parser.y Use non-deprecated %pure-parser 2016-08-11 18:29:55 +02:00
zend_language_scanner_defs.h Eliminated checks for (func->op_array.fn_flags & ZEND_ACC_GENERATOR) in fast path of DO_FCALL* handlers. 2016-05-13 01:40:15 +03:00
zend_language_scanner.c Make sure TOKEN_PARSE mode is thread safe 2016-07-23 00:00:13 +02:00
zend_language_scanner.h Make sure TOKEN_PARSE mode is thread safe 2016-07-23 00:00:13 +02:00
zend_language_scanner.l Make sure TOKEN_PARSE mode is thread safe 2016-07-23 00:00:13 +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 Added ZEND_ATTRIBUTE_FORMAT to some middind functions. 2016-06-21 16:00:37 +03:00
zend_modules.h Bump API numbers 2016-03-03 17:02:51 +01:00
zend_multibyte.c Fixed the UTF-8 and long path support in the streams on Windows. 2016-06-20 12:45:39 +02:00
zend_multibyte.h Fixed the UTF-8 and long path support in the streams on Windows. 2016-06-20 12:45:39 +02:00
zend_multiply.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_object_handlers.c Merge branch 'PHP-7.0' into PHP-7.1 2016-08-12 16:35:41 +08:00
zend_object_handlers.h This function needs to be exported for extensions that implement complex zend objects 2016-04-30 06:48:47 +01:00
zend_objects_API.c Fixed Bug #71859 (zend_objects_store_call_destructors operates on realloced memory, crashing) 2016-03-20 04:52:57 -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 EG(fake_scope) was always set to NULL wrongly 2016-06-12 15:32:04 +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 compilation warnings 2016-06-21 16:55:17 +03:00
zend_operators.c Use "fast" assembler functions in "slow" ones. 2016-06-01 20:52:14 +03:00
zend_operators.h Use "fast" assembler functions in "slow" ones. 2016-06-01 20:52:14 +03:00
zend_portability.h add proper noinline specifier for VC 2016-01-18 18:32:12 +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 Fallback to kill() if raise() doesn't work 2016-06-24 19:32:24 +03:00
zend_signal.h Remove bogus zend_signal_shutdown symbol from header 2016-07-13 01:05:32 +02:00
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 Merge branch 'PHP-7.0' 2016-01-02 17:56:54 +08:00
zend_smart_str.h Merge branch 'PHP-7.0' 2016-01-02 17:56:54 +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 Save one strlen here 2016-02-16 14:00:07 +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 HANDLE_BLOCK/UNBLOCK_INTERRUPTIONS() protection on inter-process data is completely useless now. 2016-06-20 15:50:41 +03:00
zend_string.h fix known interned strings init with TS per request 2016-06-02 17:55:48 +02:00
zend_strtod_int.h bump year which is missed in rev 49493a2 2016-01-02 17:56:11 +08:00
zend_strtod.c Fixed compilation warnings 2016-06-21 16:55:17 +03:00
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_type_info.h Squashed commit of the following: 2016-03-17 22:00:27 +03:00
zend_types.h Fixed bug #72543 (Different references behavior comparing to PHP 5) 2016-07-06 20:46:43 +03:00
zend_variables.c Reimplemented Bob's commit bac6fdb0c5 without insignificant renaming and white-space changes 2016-05-06 10:47:58 +03:00
zend_variables.h Reimplemented Bob's commit bac6fdb0c5 without insignificant renaming and white-space changes 2016-05-06 10:47:58 +03:00
zend_virtual_cwd.c fix leak 2016-08-27 22:24:24 +02:00
zend_virtual_cwd.h Fixed the UTF-8 and long path support in the streams on Windows. 2016-06-20 12:45:39 +02:00
zend_vm_def.h call_user_func(_array): Don't abort on reference warning 2016-08-23 10:29:15 +03:00
zend_vm_execute.h Remove redundant \t 2016-08-25 13:29:22 +08:00
zend_vm_execute.skl Fixed executor without global register variales (gcc warnings or clang errors) 2016-06-27 10:36:41 +03:00
zend_vm_gen.php Remove redundant \t 2016-08-25 13:29:22 +08:00
zend_vm_opcodes.c Fixed bug #71539 (Memory error on $arr[$a] =& $arr[$b] if RHS rehashes) 2016-07-07 00:59:44 +03:00
zend_vm_opcodes.h Fixed bug #71539 (Memory error on $arr[$a] =& $arr[$b] if RHS rehashes) 2016-07-07 00:59:44 +03:00
zend_vm.h Squashed commit of the following: 2016-03-17 22:00:27 +03:00
zend.c Rewrite watchpoints to be much more stable 2016-07-11 23:58:20 +02:00
zend.h Turn safe timeout handling into general interrupt handling ability. 2016-06-23 15:01:23 +03:00
zend.ico
Zend.m4 Enable Zend signals by default 2016-06-20 17:15:04 +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().