php-src/Zend
2010-11-03 15:40:24 +00:00
..
RFCs this one is declined 2004-01-09 18:55:49 +00:00
tests Fixed covariance of return-by-ref constraints 2010-11-03 15:40:24 +00:00
acconfig.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
acinclude.m4 - Added bison 2.4.3 version to the bison version list 2010-10-07 21:44:41 +00:00
bench.php MFH: Fix date warning by setting the default timezone to UTC 2009-07-13 23:56:38 +00:00
build.mk
buildconf
ChangeLog ChangeLog update 2005-08-06 05:37:51 +00:00
configure.in - Rewrite scanner to be based on re2c instead of flex 2008-03-16 21:06:55 +00:00
header Year++ 2010-01-11 03:01:19 +00:00
LICENSE - More -> 2006 changes 2006-01-05 02:34:02 +00:00
Makefile.am Fixed floating point mathematic speed degradation (Christian) 2009-03-18 10:18:10 +00:00
Makefile.frag - Fix dependency 2005-01-25 10:39:49 +00:00
OBJECTS2_HOWTO - modifyable -> modifiable 2004-04-12 12:22:26 +00:00
README.ZEND_MM MFH 2007-07-19 13:57:16 +00:00
README.ZEND_VM Nuked DOS EOLs 2005-08-03 13:29:00 +00:00
zend_alloc.c Fixed incorrect reinitialization 2010-07-14 10:27:08 +00:00
zend_alloc.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_API.c separate properties of internal classes in ZTS mode fully, 2010-08-12 07:58:14 +00:00
zend_API.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_build.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_builtin_functions.c - Fixed bug #52060 (Memory leak when passing a closure to method_exists()) 2010-06-11 23:20:13 +00:00
zend_builtin_functions.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
ZEND_CHANGES Add some information about array overloading 2004-08-30 18:48:52 +00:00
zend_closures.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_closures.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_compile.c Fixed covariance of return-by-ref constraints 2010-11-03 15:40:24 +00:00
zend_compile.h Fixed bug #52001 (Memory allocation problems after using variable variables) 2010-06-10 09:13:22 +00:00
zend_config.nw.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_config.w32.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_constants.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_constants.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_default_classes.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_dynamic_array.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_dynamic_array.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_errors.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_exceptions.c Fixed memory leaks (related to bug #52361) 2010-08-16 08:11:08 +00:00
zend_exceptions.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_execute_API.c Fixed bug #52939 (zend_call_function does not respect ZEND_SEND_PREFER_REF) 2010-10-13 08:51:39 +00:00
zend_execute.c Prevented crash in GC because of incorrect reference counting 2010-09-30 14:11:51 +00:00
zend_execute.h - Fixed bug #51905 (ReflectionParameter fails if default value is an array with an access to self::) 2010-05-26 00:00:58 +00:00
zend_extensions.c - Ensure that stderr output are not buffered, portability for tests 2010-01-25 14:47:19 +00:00
zend_extensions.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_fast_cache.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_float.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_float.h - fix vc6 build 2010-07-15 00:13:20 +00:00
zend_gc.c Fixed GC bug 2010-09-03 09:27:47 +00:00
zend_gc.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_globals_macros.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_globals.h - Reverted fix for bug #48930 (due binary compatibility breakage) 2010-06-29 11:37:13 +00:00
zend_hash.c - Don't be silent on bailout 2010-09-14 14:26:37 +00:00
zend_hash.h Fixed bug #51008 (Zend/tests/bug45877.phpt fails) 2010-10-05 11:28:56 +00:00
zend_highlight.c - Reverted r296062 and r296065 2010-03-12 10:28:59 +00:00
zend_highlight.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_indent.c - Reverted r296062 and r296065 2010-03-12 10:28:59 +00:00
zend_indent.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_ini_parser.y - Fixed bug #52138 (Constants are parsed into the ini file for section names) 2010-06-24 22:32:42 +00:00
zend_ini_scanner_defs.h - Fixed bug #52508 (newline problem with parse_ini_file+INI_SCANNER_RAW) 2010-08-01 15:26:54 +00:00
zend_ini_scanner.c - Fixed bug #52508 (newline problem with parse_ini_file+INI_SCANNER_RAW) 2010-08-01 15:26:54 +00:00
zend_ini_scanner.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_ini_scanner.l - Fixed bug #52508 (newline problem with parse_ini_file+INI_SCANNER_RAW) 2010-08-01 15:26:54 +00:00
zend_ini.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_ini.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_interfaces.c Remove trailing dots 2010-02-02 04:49:02 +00:00
zend_interfaces.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_istdiostream.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_iterators.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_iterators.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_language_parser.y sed -i "s#1998-2009#1998-2010#g" **/*.re **/*.y **/*.l 2010-01-05 20:40:23 +00:00
zend_language_scanner_defs.h - Reverted fix for bug #48930 (due binary compatibility breakage) 2010-06-29 11:37:13 +00:00
zend_language_scanner.c - Fixed bug #48930 (__COMPILER_HALT_OFFSET__ incorrect in PHP >= 5.3) 2010-06-30 02:45:10 +00:00
zend_language_scanner.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_language_scanner.l - Fixed bug #48930 (__COMPILER_HALT_OFFSET__ incorrect in PHP >= 5.3) 2010-06-30 02:45:10 +00:00
zend_list.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_list.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_llist.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_llist.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_modules.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_multibyte.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_multibyte.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_multiply.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_object_handlers.c - Reverted fix for bug #51176 2010-11-03 01:35:26 +00:00
zend_object_handlers.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_objects_API.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_objects_API.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_objects.c Bug #52361 (Throwing an exception in a destructor causes invalid catching) 2010-08-16 09:20:46 +00:00
zend_objects.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_opcode.c Fixed bug #51822i (Segfault with strange __destruct() for static class variables) 2010-06-10 11:45:51 +00:00
zend_operators.c - Fixed bug #52193 (converting closure to array yields empty array) 2010-06-26 17:14:33 +00:00
zend_operators.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_ptr_stack.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_ptr_stack.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_qsort.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_qsort.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_sprintf.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_stack.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_stack.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_static_allocator.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_static_allocator.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_stream.c - label only used when mmap is available 2010-06-06 12:32:25 +00:00
zend_stream.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_strtod.c Fixed floating point mathematic speed degradation (Christian) 2009-03-18 10:18:10 +00:00
zend_strtod.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_ts_hash.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_ts_hash.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_types.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_variables.c separate properties of internal classes in ZTS mode fully, 2010-08-12 07:58:14 +00:00
zend_variables.h - fix cast 2010-08-12 17:28:08 +00:00
zend_vm_def.h Fixed bug #52237 (Crash when passing the reference of the property of a non-object) 2010-07-05 09:08:35 +00:00
zend_vm_execute.h Fixed bug #52237 (Crash when passing the reference of the property of a non-object) 2010-07-05 09:08:35 +00:00
zend_vm_execute.skl Fixed bug #46074 (Bus error during running PHP CLI under IRIX 6.5.30) 2009-09-03 14:33:11 +00:00
zend_vm_gen.php - Let's generate this #ifdef only on zend_vm_execute.h 2010-06-07 23:04:30 +00:00
zend_vm_opcodes.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend_vm.h sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
zend.c sed -i "s#1998-2009#1998-2010#g" **/*.c **/*.h **/*.php 2010-01-05 20:46:53 +00:00
Zend.dsp Fixed floating point mathematic speed degradation (Christian) 2009-03-18 10:18:10 +00:00
zend.h Fix gcc version check - bug #50771 2010-01-15 18:26:53 +00:00
zend.ico
Zend.m4 Fix bug #48575 - Use dlopen() just like all the other *nixes instead of OSX specific code. 2009-08-06 01:33:54 +00:00
ZendCore.dep
ZendTS.dsp Added support for lambda functions and closures 2008-07-14 09:49:03 +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 callls 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().