php-src/Zend
Nikita Popov 607be654fd Fixed bug #81342
Allow arbitrary whitespace, not just horizontal spaces.
2021-08-10 17:11:40 +02:00
..
asm Implement Fibers 2021-04-26 11:07:06 -05:00
Optimizer Use zend_string_equals_literal_ci() 2021-08-10 15:52:28 +02:00
tests Fix ASSIGN_DIM to NEXT with rc=1 reference value 2021-08-03 10:25:24 +02:00
bench.php
LICENSE
Makefile.frag Fix race condition in automatic zend_vm_gen.php invocation 2021-07-16 10:03:00 +02:00
micro_bench.php
README.md
zend_alloc_sizes.h
zend_alloc.c Fix typo 2021-07-13 14:00:18 +02:00
zend_alloc.h Fix output buffer discard on memory limit 2021-05-31 16:30:36 +02:00
zend_API.c Increment refcounts in mutable data copies 2021-07-27 12:29:46 +02:00
zend_API.h Add support for internal enums 2021-07-27 09:19:14 +02:00
zend_arena.h Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_ast.c Add additional double to string APIs 2021-08-02 16:14:53 +02:00
zend_ast.h Add support for internal enums 2021-07-27 09:19:14 +02:00
zend_attributes_arginfo.h Add support for tentative return types of internal methods 2021-05-14 15:55:25 +02:00
zend_attributes.c Merge branch 'PHP-8.0' 2021-05-21 11:42:11 +02:00
zend_attributes.h Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_attributes.stub.php Add support for tentative return types of internal methods 2021-05-14 15:55:25 +02:00
zend_bitset.h Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_build.h
zend_builtin_functions_arginfo.h Declare the $value param of define() as mixed 2021-07-14 22:02:59 +02:00
zend_builtin_functions.c Add RETURN/RETVAL_COPY_DEREF() macros 2021-07-22 09:44:19 +02:00
zend_builtin_functions.h Improve type declarations for Zend APIs 2020-08-28 15:41:27 +02:00
zend_builtin_functions.stub.php Declare the $value param of define() as mixed 2021-07-14 22:02:59 +02:00
zend_closures_arginfo.h Add ZEND_ACC_NOT_SERIALIZABLE flag 2021-07-19 15:59:11 +02:00
zend_closures.c Set called_scope in __callStatic closure trampoline 2021-07-23 10:58:05 +02:00
zend_closures.h Add first-class callables 2021-07-14 14:37:25 +02:00
zend_closures.stub.php Add ZEND_ACC_NOT_SERIALIZABLE flag 2021-07-19 15:59:11 +02:00
zend_compile.c Preload unlinked classes, remove preload autoload (#7311) 2021-07-28 14:27:58 +02:00
zend_compile.h Drop HAS_UNLINKED_USES flag 2021-07-29 16:10:50 +02:00
zend_config.w32.h Remove "inline" defines on Windows (#7071) 2021-05-31 10:05:18 +02:00
zend_constants.c Add ZEND_CLASS_CONST_FLAGS() macro 2021-04-28 14:51:54 +02:00
zend_constants.h Fix spelling and grammar mistakes 2021-04-13 12:09:37 +02:00
zend_cpuinfo.c Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_cpuinfo.h Mark various functions with void arguments. 2021-05-12 14:55:53 +01:00
zend_default_classes.c Implement Fibers 2021-04-26 11:07:06 -05:00
zend_dtrace.c fix dtrace observer callback prototype 2021-06-04 16:03:09 +02:00
zend_dtrace.d
zend_dtrace.h fix dtrace observer callback prototype 2021-06-04 16:03:09 +02:00
zend_enum_arginfo.h Implement enums 2021-03-17 19:08:03 +01:00
zend_enum.c Fix enum cast AST allocation, again 2021-07-27 11:05:45 +02:00
zend_enum.h Add support for internal enums 2021-07-27 09:19:14 +02:00
zend_enum.stub.php Implement enums 2021-03-17 19:08:03 +01:00
zend_errors.h
zend_exceptions_arginfo.h Declare tentative return types for Zend (#7251) 2021-07-19 13:44:20 +02:00
zend_exceptions.c Fix bug #81303 improve match errors 2021-08-02 17:31:26 +02:00
zend_exceptions.h Allow creating Graceful/UnwindExit and use when destroying a fiber (#7174) 2021-06-28 15:23:34 -05:00
zend_exceptions.stub.php Declare tentative return types for Zend (#7251) 2021-07-19 13:44:20 +02:00
zend_execute_API.c Drop HAS_UNLINKED_USES flag 2021-07-29 16:10:50 +02:00
zend_execute.c Fix bug #81303 improve match errors 2021-08-02 17:31:26 +02:00
zend_execute.h Fix bug #81303 improve match errors 2021-08-02 17:31:26 +02:00
zend_extensions.c Check linker compatibility directly from HMODULE 2020-09-21 16:25:31 +02:00
zend_extensions.h Add const to zend_extension_version_info.build_id 2021-03-02 18:42:58 -07:00
zend_fibers_arginfo.h Add ZEND_ACC_NOT_SERIALIZABLE flag 2021-07-19 15:59:11 +02:00
zend_fibers.c Don't return reference from Fiber::getReturn() 2021-07-22 09:44:19 +02:00
zend_fibers.h Extend resource reservation to Fibers (#7292) 2021-07-21 20:19:20 +02:00
zend_fibers.stub.php Add ZEND_ACC_NOT_SERIALIZABLE flag 2021-07-19 15:59:11 +02:00
zend_float.c
zend_float.h
zend_gc.c Fix some typos (#7320) 2021-07-31 08:34:57 +02:00
zend_gc.h Don't perform recursive get_gc call 2021-06-09 11:15:59 +02:00
zend_gdb.c Mark various functions with void arguments. 2021-05-12 14:55:53 +01:00
zend_gdb.h Improve type declarations for Zend APIs 2020-08-28 15:41:27 +02:00
zend_generators_arginfo.h Add ZEND_ACC_NOT_SERIALIZABLE flag 2021-07-19 15:59:11 +02:00
zend_generators.c Add RETURN/RETVAL_COPY_DEREF() macros 2021-07-22 09:44:19 +02:00
zend_generators.h Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_generators.stub.php Add ZEND_ACC_NOT_SERIALIZABLE flag 2021-07-19 15:59:11 +02:00
zend_globals_macros.h
zend_globals.h Improve fiber interoperability (#7128) 2021-06-10 23:00:07 -05:00
zend_hash.c Remove leading underscore for _zend_hash_find_known_hash (#7260) 2021-07-20 17:07:17 -06:00
zend_hash.h Remove dynamic defs from methods as well 2021-08-02 10:29:58 +02:00
zend_highlight.c Introduce pseudo-keyword ZEND_FALLTHROUGH 2021-04-07 00:46:29 +01:00
zend_highlight.h Accept zend_string in highlight_string API 2020-10-22 14:35:40 +02:00
zend_inheritance.c Fix mutable data initialization during lazy class loading 2021-08-02 11:06:27 +02:00
zend_inheritance.h Added Inheritance Cache. 2021-02-09 22:53:57 +03:00
zend_ini_parser.y Change Zend Stream API to use zend_string* instead of char*. 2021-03-16 20:31:36 +03:00
zend_ini_scanner.h Improve type declarations for Zend APIs 2020-08-28 15:41:27 +02:00
zend_ini_scanner.l Remove 'register' type qualifier (#6980) 2021-05-14 13:38:01 +01:00
zend_ini.c Fixed some spaces used instead of tabs 2021-06-29 11:30:26 +02:00
zend_ini.h Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_interfaces_arginfo.h Drop serial denier functions 2021-07-20 13:11:11 +02:00
zend_interfaces.c Add RETURN/RETVAL_COPY_DEREF() macros 2021-07-22 09:44:19 +02:00
zend_interfaces.h Drop serial denier functions 2021-07-20 13:11:11 +02:00
zend_interfaces.stub.php Drop serial denier functions 2021-07-20 13:11:11 +02:00
zend_istdiostream.h
zend_iterators.c Add get_gc handle for object iterators 2020-07-01 15:17:22 +02:00
zend_iterators.h Add get_gc handle for object iterators 2020-07-01 15:17:22 +02:00
zend_language_parser.y Implement readonly properties 2021-07-20 12:05:46 +02:00
zend_language_scanner.h Fix parsing of semi-reserved tokens at offset > 4 GB 2021-01-25 14:37:36 +01:00
zend_language_scanner.l Fixed bug #81342 2021-08-10 17:11:40 +02:00
zend_list.c Assert on unknown list entry type 2020-09-21 14:58:23 +02:00
zend_list.h Improve type declarations for Zend APIs 2020-08-28 15:41:27 +02:00
zend_llist.c Change Zend Stream API to use zend_string* instead of char*. 2021-03-16 20:31:36 +03:00
zend_llist.h
zend_long.h Return value from ZEND_ATOL 2021-07-12 16:51:24 +02:00
zend_map_ptr.h Fast Class Cache 2021-04-08 23:37:40 +03:00
zend_modules.h Prepare for PHP 8.1 2020-10-09 11:37:27 +02:00
zend_multibyte.c Improve type declarations for Zend APIs 2020-08-28 15:41:27 +02:00
zend_multibyte.h Improve type declarations for Zend APIs 2020-08-28 15:41:27 +02:00
zend_multiply.h Improve type declarations for Zend APIs 2020-08-28 15:41:27 +02:00
zend_object_handlers.c Always use separate static_members_table 2021-07-23 09:29:32 +02:00
zend_object_handlers.h Optimized object conversion to array without rebulding properties HashTable 2021-03-01 22:37:37 +03:00
zend_objects_API.c Add API to prevent Fiber switch in select contexts 2021-06-14 14:19:00 -05:00
zend_objects_API.h We don't have to clear zend_object structure, it's initialized by zend_object_std_init() anyway. 2021-04-02 16:11:34 +03:00
zend_objects.c Fixed use-after-free introduced by ca49e53670 2021-04-19 18:16:14 +03:00
zend_objects.h
zend_observer.c more fiber notifications (#7293) 2021-07-21 17:18:15 +02:00
zend_observer.h more fiber notifications (#7293) 2021-07-21 17:18:15 +02:00
zend_opcode.c Preload unlinked classes, remove preload autoload (#7311) 2021-07-28 14:27:58 +02:00
zend_operators.c Add additional double to string APIs 2021-08-02 16:14:53 +02:00
zend_operators.h Add additional double to string APIs 2021-08-02 16:14:53 +02:00
zend_portability.h Implement Fibers 2021-04-26 11:07:06 -05:00
zend_ptr_stack.c Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_ptr_stack.h Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_range_check.h
zend_signal.c Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_signal.h Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_smart_str_public.h Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_smart_str.c Fix bug #81303 improve match errors 2021-08-02 17:31:26 +02:00
zend_smart_str.h Fix bug #81303 improve match errors 2021-08-02 17:31:26 +02:00
zend_smart_string_public.h Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_smart_string.h Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_sort.c
zend_sort.h
zend_stack.c Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_stack.h Replace zend_bool uses with bool 2021-01-15 12:33:06 +01:00
zend_stream.c Change Zend Stream API to use zend_string* instead of char*. 2021-03-16 20:31:36 +03:00
zend_stream.h Change Zend Stream API to use zend_string* instead of char*. 2021-03-16 20:31:36 +03:00
zend_string.c Always define valgrind replacement symbol for zend_string_equal_val 2021-05-21 21:00:34 +02:00
zend_string.h Merge branch 'PHP-8.0' 2021-07-21 15:36:16 +02:00
zend_strtod_int.h
zend_strtod.c Move php_gcvt to zend_gcvt 2021-08-02 14:51:46 +02:00
zend_strtod.h Move php_gcvt to zend_gcvt 2021-08-02 14:51:46 +02:00
zend_system_id.c Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_system_id.h Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_type_info.h Add support for verifying optimizer func info 2021-07-21 12:24:30 +02:00
zend_types.h [skip-ci] Fix comments and UPGRADING.INTERNALS for zend_type changes 2021-07-28 13:31:52 +02:00
zend_variables.c
zend_variables.h Drop various unused macros/APIs 2020-08-26 12:59:43 +02:00
zend_virtual_cwd.c Merge branch 'PHP-8.0' 2021-05-25 11:41:06 +02:00
zend_virtual_cwd.h Update http->https in license (#6945) 2021-05-06 12:16:35 +02:00
zend_vm_def.h Fix ASSIGN_DIM to NEXT with rc=1 reference value 2021-08-03 10:25:24 +02:00
zend_vm_execute.h Fix ASSIGN_DIM to NEXT with rc=1 reference value 2021-08-03 10:25:24 +02:00
zend_vm_execute.skl Cleanup observer API and add JIT support 2020-09-18 12:55:58 +03:00
zend_vm_gen.php Fix a typo in function execute_ex (#7315) 2021-07-29 13:49:31 +02:00
zend_vm_handlers.h Add first-class callables 2021-07-14 14:37:25 +02:00
zend_vm_opcodes.c Add first-class callables 2021-07-14 14:37:25 +02:00
zend_vm_opcodes.h Add first-class callables 2021-07-14 14:37:25 +02:00
zend_vm_trace_handlers.h
zend_vm_trace_lines.h A helper to trace executed source lines 2020-06-10 00:13:39 +03:00
zend_vm_trace_map.h
zend_vm.h
zend_weakrefs_arginfo.h Not serializable flag permeation 2021-07-20 12:28:35 +02:00
zend_weakrefs.c Not serializable flag permeation 2021-07-20 12:28:35 +02:00
zend_weakrefs.h Fix warnings of strict-prototypes 2020-07-23 00:59:00 +08:00
zend_weakrefs.stub.php Not serializable flag permeation 2021-07-20 12:28:35 +02:00
zend.c Preload unlinked classes, remove preload autoload (#7311) 2021-07-28 14:27:58 +02:00
zend.h Preload unlinked classes, remove preload autoload (#7311) 2021-07-28 14:27:58 +02:00
Zend.m4 Remove unnecessary LIBZEND_MM_ALIGN assignment 2021-05-17 18:44:57 +02:00

Zend Engine

Zend memory manager

General

The goal of the new memory manager (available since PHP 5.2) is to reduce memory allocation overhead and speedup memory management.

Debugging

Normal:

sapi/cli/php -r 'leak();'

Zend MM disabled:

USE_ZEND_ALLOC=0 valgrind --leak-check=full sapi/cli/php -r 'leak();'

Shared extensions

Since PHP 5.3.11 it is possible to prevent shared extensions from unloading so that valgrind can correctly track the memory leaks in shared extensions. For this there is the ZEND_DONT_UNLOAD_MODULES environment variable. If set, then DL_UNLOAD() is skipped during the shutdown of shared extensions.

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> and <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