php-src/Zend
2014-07-15 15:51:40 +04:00
..
RFCs fixed typo and few grammar mistakes 2013-10-17 22:00:40 -04:00
tests Implement call_user_func() and call_user_func_array() using special opcodes. 2014-07-11 00:32:18 +04:00
acinclude.m4 Merge branch 'PHP-5.4' into PHP-5.5 2013-10-19 13:27:36 +08:00
bench.php
build.mk
buildconf
configure.in
header
LICENSE
Makefile.am Merge branch 'PHP-5.5' into PHP-5.6 2013-12-22 13:11:20 +00:00
Makefile.frag
micro_bench.php
OBJECTS2_HOWTO
README.ZEND_MM
README.ZEND_VM typo fixes 2013-07-15 00:23:03 -07:00
zend_alloc.c Simplify call-frame handling 2014-07-07 15:50:44 +04:00
zend_alloc.h Cleanup (1-st round) 2014-04-15 15:40:40 +04:00
zend_API.c Fixed ZTS build 2014-07-14 14:25:04 +04:00
zend_API.h Fixed ZTS build 2014-07-14 14:25:04 +04:00
zend_arena.h Fixed compilation warnings 2014-07-15 15:51:40 +04:00
zend_ast.c Merge branch 'master' into test 2014-07-01 00:19:41 +04:00
zend_ast.h Re-applyed Bob's patch with minor fixes 2014-05-07 15:03:56 +04:00
zend_build.h Bump year 2014-01-03 11:08:10 +08:00
zend_builtin_functions.c Fast parameter parsing API 2014-07-11 16:32:20 +04:00
zend_builtin_functions.h Bump year 2014-01-03 11:08:10 +08:00
ZEND_CHANGES less serious compatAbility fixes 2013-07-15 00:21:39 -07:00
zend_closures.c Refactored run_time_cache usage in object handlers 2014-07-07 20:54:31 +04:00
zend_closures.h Refactored data structures to keep zend_object* instead of a whole zval in some places 2014-03-28 02:11:22 +04:00
zend_compile.c Fixed ZTS build 2014-07-14 15:46:09 +04:00
zend_compile.h Implemented builtin instruction for strlen() 2014-07-11 18:52:27 +04:00
zend_config.nw.h Bump year 2014-01-03 11:08:10 +08:00
zend_config.w32.h Fixed bug #66009 Failed compilation of PHP extension with C++ std library using VS 2012 2014-01-04 01:41:49 +01:00
zend_constants.c Removed EG(called_scope) and use corresponding value from EG(current_execute_data) 2014-07-03 02:34:43 +04:00
zend_constants.h Optimized constant lookup 2014-04-25 00:56:15 +04:00
zend_default_classes.c Bump year 2014-01-03 11:08:10 +08:00
zend_dtrace.c Simplify call-frame handling 2014-07-07 15:50:44 +04:00
zend_dtrace.d
zend_dtrace.h Simplify call-frame handling 2014-07-07 15:50:44 +04:00
zend_dynamic_array.c Bump year 2014-01-03 11:08:10 +08:00
zend_dynamic_array.h Bump year 2014-01-03 11:08:10 +08:00
zend_errors.h Bump year 2014-01-03 11:08:10 +08:00
zend_exceptions.c Simplify call-frame handling 2014-07-07 15:50:44 +04:00
zend_exceptions.h Added vstrpprintf strpprintf to avoid duplicate string 2014-05-10 00:21:49 +08:00
zend_execute_API.c Implement call_user_func() and call_user_func_array() using special opcodes. 2014-07-11 00:32:18 +04:00
zend_execute.c Implement call_user_func() and call_user_func_array() using special opcodes. 2014-07-11 00:32:18 +04:00
zend_execute.h Fixed compilation warnings 2014-07-15 15:51:40 +04:00
zend_extensions.c Merge branch 'PHP-5.6' 2014-01-03 11:09:07 +08:00
zend_extensions.h Merge branch 'PHP-5.6' 2014-01-03 11:09:07 +08:00
zend_float.c Bump year 2014-01-03 11:08:10 +08:00
zend_float.h Bump year 2014-01-03 11:08:10 +08:00
zend_gc.c C89 compat 2014-05-13 14:04:53 +02:00
zend_gc.h Various VM optimizations 2014-04-04 02:52:53 +04:00
zend_generators.c Merge branch 'master' into test 2014-07-07 19:21:23 +04:00
zend_generators.h Simplify call-frame handling 2014-07-07 15:50:44 +04:00
zend_globals_macros.h Bump year 2014-01-03 11:08:10 +08:00
zend_globals.h Removed EG(active_symbol_table) and use corresponding value from EG(current_execute_data) 2014-07-04 18:03:45 +04:00
zend_hash.c Use reference counting instead of zval duplication 2014-06-05 16:04:11 +04:00
zend_hash.h Simplified and optimized ZEND_HANDLE_NUMERIC() 2014-06-03 13:10:42 +04:00
zend_highlight.c Fix Bug #67468 Segfault in highlight_file()/highlight_string() when pgsql.so module is loaded 2014-06-23 09:51:44 +02:00
zend_highlight.h Bump year 2014-01-03 11:08:10 +08:00
zend_indent.c Merge branch 'PHP-5.6' 2014-06-23 10:14:08 +02:00
zend_indent.h Merge branch 'PHP-5.6' 2014-01-03 11:09:07 +08:00
zend_ini_parser.y Merge mainstream 'master' branch into refactoring 2014-04-26 00:32:51 +04:00
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 zend_stack_top() now returns pointer directly 2014-05-01 09:08:30 +02:00
zend_ini_scanner.h Bump year 2014-01-03 11:08:10 +08:00
zend_ini_scanner.l zend_stack_top() now returns pointer directly 2014-05-01 09:08:30 +02:00
zend_ini.c Don't use cast (compiler friendly) 2014-05-26 11:05:04 +08:00
zend_ini.h Allocate zend_strings with correct size 2014-04-23 19:34:51 +02:00
zend_interfaces.c Removed EG(called_scope) and use corresponding value from EG(current_execute_data) 2014-07-03 02:34:43 +04:00
zend_interfaces.h Refactoring zend_iterator (incompleted) 2014-02-27 19:19:02 +08:00
zend_istdiostream.h Bump year 2014-01-03 11:08:10 +08:00
zend_iterators.c Cleanup (1-st round) 2014-04-15 15:40:40 +04:00
zend_iterators.h Add zend_iterator_dtor 2014-02-28 15:03:43 +08:00
zend_language_parser.y Re-applyed Bob's patch with minor fixes 2014-05-07 15:03:56 +04:00
zend_language_scanner_defs.h Merge branch 'PHP-5.5' into PHP-5.6 2014-03-10 12:18:57 +01:00
zend_language_scanner.c zend_stack_top() now returns pointer directly 2014-05-01 09:08:30 +02:00
zend_language_scanner.h Use better data structures (incomplete) 2014-02-10 10:04:30 +04:00
zend_language_scanner.l zend_stack_top() now returns pointer directly 2014-05-01 09:08:30 +02:00
zend_list.c Use new zend_hash API 2014-05-27 00:38:58 +04:00
zend_list.h Removed support for old-style resource destructors (only ext/soap used it) 2014-05-15 10:57:03 +04:00
zend_llist.c Bump year 2014-01-03 11:08:10 +08:00
zend_llist.h Bump year 2014-01-03 11:08:10 +08:00
zend_modules.h Use better data structures (incomplete) 2014-02-17 17:59:18 +04:00
zend_multibyte.c Refactor mbstring (incompleted) 2014-03-24 12:40:07 +08:00
zend_multibyte.h Bump year 2014-01-03 11:08:10 +08:00
zend_multiply.h Bump year 2014-01-03 11:08:10 +08:00
zend_object_handlers.c Specify HashTable size and optimize inserts that may not conflict 2014-07-08 13:46:03 +04:00
zend_object_handlers.h Refactored run_time_cache usage in object handlers 2014-07-07 20:54:31 +04:00
zend_objects_API.c Refactored run_time_cache usage in object handlers 2014-07-07 20:54:31 +04:00
zend_objects_API.h Fixed destruction of objects and iterators on unclean request shutdown and GC (few cases are still unfixed). 2014-04-09 01:50:15 +04:00
zend_objects.c Removed EG(in_execution). If EG(currentent_execute_data) is not NULL we are executing something. 2014-07-03 01:02:25 +04:00
zend_objects.h Fixed destruction of objects and iterators on unclean request shutdown and GC (few cases are still unfixed). 2014-04-09 01:50:15 +04:00
zend_opcode.c Suppress warning "cast from pointer to integer of different size" 2014-07-01 10:36:19 +08:00
zend_operators.c Fast parameter parsing API 2014-07-11 16:32:20 +04:00
zend_operators.h Fast parameter parsing API 2014-07-11 16:32:20 +04:00
zend_ptr_stack.c Bump year 2014-01-03 11:08:10 +08:00
zend_ptr_stack.h Bump year 2014-01-03 11:08:10 +08:00
zend_qsort.c Bump year 2014-01-03 11:08:10 +08:00
zend_qsort.h Bump year 2014-01-03 11:08:10 +08:00
zend_signal.c
zend_signal.h
zend_sprintf.c Bump year 2014-01-03 11:08:10 +08:00
zend_stack.c zend_stack_top() now returns pointer directly 2014-05-01 09:08:30 +02:00
zend_stack.h zend_stack_top() now returns pointer directly 2014-05-01 09:08:30 +02:00
zend_static_allocator.c Bump year 2014-01-03 11:08:10 +08:00
zend_static_allocator.h Bump year 2014-01-03 11:08:10 +08:00
zend_stream.c Bump year 2014-01-03 11:08:10 +08:00
zend_stream.h Bump year 2014-01-03 11:08:10 +08:00
zend_string.c Improved ZTS support 2014-06-09 21:29:20 +04:00
zend_string.h Fixed compilation warnings 2014-07-15 15:51:40 +04:00
zend_strtod.c Replace invalid code with a proper #error 2013-12-08 15:49:22 -08:00
zend_strtod.h Bump year 2014-01-03 11:08:10 +08:00
zend_ts_hash.c Combine HashTable.flags and HashTable.nApplyCount into single 32-bit word 2014-04-21 18:25:34 +04:00
zend_ts_hash.h Combine HashTable.flags and HashTable.nApplyCount into single 32-bit word 2014-04-21 18:25:34 +04:00
zend_types.h Introduced immutable arrays. They don't need to be copyed and may be used directly from SHM. 2014-05-29 18:21:56 +04:00
zend_variables.c Removed EG(active_symbol_table) and use corresponding value from EG(current_execute_data) 2014-07-04 18:03:45 +04:00
zend_variables.h Optimized conditions order 2014-06-03 03:54:03 +04:00
zend_virtual_cwd.c Bump year 2014-01-03 11:08:10 +08:00
zend_virtual_cwd.h Bump year 2014-01-03 11:08:10 +08:00
zend_vm_def.h Implemented builtin instruction for strlen() 2014-07-14 15:43:11 +04:00
zend_vm_execute.h Implemented builtin instruction for strlen() 2014-07-14 15:43:11 +04:00
zend_vm_execute.skl Simplify call-frame handling 2014-07-07 15:50:44 +04:00
zend_vm_gen.php Removed EG(in_execution). If EG(currentent_execute_data) is not NULL we are executing something. 2014-07-03 01:02:25 +04:00
zend_vm_opcodes.c Implemented builtin instruction for strlen() 2014-07-14 15:43:11 +04:00
zend_vm_opcodes.h Implemented builtin instruction for strlen() 2014-07-14 15:43:11 +04:00
zend_vm.h Bump year 2014-01-03 11:08:10 +08:00
zend.c Changed zend_make_printable_zval() to return "use_copy" instead of additional reference argument. 2014-07-09 16:05:55 +04:00
Zend.dsp fix *.dsp files related to bug #50333 2014-01-28 13:09:29 +01:00
zend.h Fast parameter parsing API 2014-07-11 16:32:20 +04:00
zend.ico
Zend.m4
ZendCore.dep
ZendTS.dsp Merge branch 'PHP-5.5' into PHP-5.6 2013-12-22 13:11:20 +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 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().