php-src/Zend
2015-03-10 17:24:29 +08:00
..
RFCs
tests Merge branch 'master' of https://git.php.net/repository/php-src 2015-03-10 17:09:41 +08:00
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 Temorary fix for phpdbg segfault while use zend_mm_set_custom_handlers 2015-03-09 11:19:05 +08:00
zend_alloc.h Minimize copying of HashTable realocation 2015-03-05 17:22:10 +03:00
zend_API.c Merge branch 'pull-request/1049' 2015-03-08 17:57:47 -07:00
zend_API.h Add ZEND_ARG_CALLABLE_INFO to allow internal function to type hint against callable 2015-03-08 23:00:13 +08:00
zend_arena.h bump year 2015-01-15 23:27:30 +08:00
zend_ast.c Unused var 2015-02-21 10:58:23 +08:00
zend_ast.h fix compilation warnings, rename batch_use to group_use 2015-03-08 12:50:57 -03:00
zend_build.h bump year 2015-01-15 23:27:30 +08:00
zend_builtin_functions.c Added specialized versions of DO_FCALL handler: 2015-02-25 10:37:21 +03:00
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 Errors converted to exceptions are not "recoverable" anymore. 2015-03-10 10:31:55 +03:00
zend_closures.h bump year 2015-01-15 23:27:30 +08:00
zend_compile.c Declares in top 2015-03-09 00:01:55 +08:00
zend_compile.h Added specialized versions of DO_FCALL handler: 2015-02-25 10:37:21 +03:00
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 Implement engine exceptions 2015-03-09 14:01:32 +01:00
zend_exceptions.c Implement engine exceptions 2015-03-09 14:01:32 +01:00
zend_exceptions.h Implement engine exceptions 2015-03-09 14:01:32 +01:00
zend_execute_API.c Fixed zend_hash_append result duplicated key 2015-03-08 00:21:02 +08:00
zend_execute.c Errors converted to exceptions are not "recoverable" anymore. 2015-03-10 10:31:55 +03:00
zend_execute.h Avoid repeatable strlen() calls 2015-03-05 18:18:39 +03:00
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 Merged zend_array and HashTable into the single data structure. 2015-02-13 22:20:39 +03:00
zend_gc.h Make gc_collect_cycles hookable. 2015-01-23 19:23:58 +00:00
zend_generators.c Errors converted to exceptions are not "recoverable" anymore. 2015-03-10 10:31:55 +03:00
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 Improved assert() according to expectations RFC. 2015-03-02 12:25:40 +03:00
zend_hash.c Unused var 2015-03-05 23:09:58 +08:00
zend_hash.h Fixed zend_hash_append result duplicated key 2015-03-08 00:21:02 +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 Fixed zend_hash_append result duplicated key 2015-03-08 00:21:02 +08:00
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
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 fix compilation warnings, rename batch_use to group_use 2015-03-08 12:50:57 -03:00
zend_language_scanner_defs.h Use zend_string* instead of char* for opened_patch handling. Avoid reallocations and improve string reuse. 2015-03-04 02:05:28 +03:00
zend_language_scanner.c Use zend_string* instead of char* for opened_patch handling. Avoid reallocations and improve string reuse. 2015-03-04 02:05:28 +03:00
zend_language_scanner.h Fixed compiler reenterability 2015-01-22 20:39:34 +03:00
zend_language_scanner.l Use zend_string* instead of char* for opened_patch handling. Avoid reallocations and improve string reuse. 2015-03-04 02:05:28 +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 merge ZEND_SIGNED_MULTIPLY_LONG for i386 and x86_64 2015-02-28 01:43:53 +02:00
zend_object_handlers.c Fixed zend_hash_append result duplicated key 2015-03-08 00:21:02 +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 Move zend_object->guards into additional slot of zend_object->properties_table[]. As result size of objects without __get/__set/__unset/__isset magic methods is reduced. 2015-02-04 15:24:13 +03:00
zend_objects.c Make zend_array_destroy() to free the corresponding zend_array 2015-02-24 18:34:37 +03:00
zend_objects.h bump year 2015-01-15 23:27:30 +08:00
zend_opcode.c Merge branch 'PHP-5.6' 2015-03-05 18:44:13 +08:00
zend_operators.c Don't inline slow path 2015-02-26 01:28:47 +03:00
zend_operators.h Fixed C++ support 2015-02-27 13:45:11 +03:00
zend_portability.h This should fix compilation on OSX (bug #68987 Failed to compile zend.c with gcc-4.9.2) 2015-02-06 13:42:22 +03:00
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 Revert commit to zend signal by mistake 2015-03-05 19:04:43 +08:00
zend_signal.h Revive Zend Signals handler (and fixed bug #61083) 2015-03-05 18:11:22 +08:00
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 Use zend_string* instead of char* for opened_patch handling. Avoid reallocations and improve string reuse. 2015-03-04 02:05:28 +03:00
zend_stream.h Use zend_string* instead of char* for opened_patch handling. Avoid reallocations and improve string reuse. 2015-03-04 02:05:28 +03:00
zend_string.c Limit HashTable size to avoid integer overflow checks 2015-02-13 02:12:42 +03:00
zend_string.h Forget this change 2015-02-11 16:06:47 +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 Lazy duplication of op_array->static_variables 2015-02-20 13:28:26 +03:00
zend_variables.c Removed deprecated paths. Changed "switch" into series of "if". 2015-03-03 16:49:45 +03:00
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 Merge branch 'PHP-5.6' 2015-03-10 17:24:29 +08:00
zend_vm_execute.h Merge branch 'PHP-5.6' 2015-03-10 17:24:29 +08:00
zend_vm_execute.skl first shot remove TSRMLS_* things 2014-12-13 23:06:14 +01:00
zend_vm_gen.php Implement engine exceptions 2015-03-09 14:01:32 +01:00
zend_vm_opcodes.c Improved assert() according to expectations RFC. 2015-03-02 12:25:40 +03:00
zend_vm_opcodes.h Improved assert() according to expectations RFC. 2015-03-02 12:25:40 +03:00
zend_vm.h bump year 2015-01-15 23:27:30 +08:00
zend.c Implement engine exceptions 2015-03-09 14:01:32 +01:00
zend.h Fixed zend_hash_append result duplicated key 2015-03-08 00:21:02 +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().