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ruby/internal/variable.h

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add #include guard hack According to MSVC manual (*1), cl.exe can skip including a header file when that: - contains #pragma once, or - starts with #ifndef, or - starts with #if ! defined. GCC has a similar trick (*2), but it acts more stricter (e. g. there must be _no tokens_ outside of #ifndef...#endif). Sun C lacked #pragma once for a looong time. Oracle Developer Studio 12.5 finally implemented it, but we cannot assume such recent version. This changeset modifies header files so that each of them include strictly one #ifndef...#endif. I believe this is the most portable way to trigger compiler optimizations. [Bug #16770] *1: https://docs.microsoft.com/en-us/cpp/preprocessor/once *2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
2020-04-10 08:11:40 +03:00
#ifndef INTERNAL_VARIABLE_H /*-*-C-*-vi:se ft=c:*/
#define INTERNAL_VARIABLE_H
/**
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 07:28:13 +03:00
* @author Ruby developers <ruby-core@ruby-lang.org>
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 07:28:13 +03:00
* @brief Internal header for variables.
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
*/
sed -i 's|ruby/impl|ruby/internal|' To fix build failures.
2020-05-08 12:31:09 +03:00
#include "ruby/internal/config.h"
internal/variable.h rework Eliminated macros. Also marked MJIT_FUNC_EXPORTED functions as such. Some of them are declared in constant.h so edited that file also.
2019-12-03 09:11:09 +03:00
#include <stddef.h> /* for size_t */
#include "constant.h" /* for rb_const_entry_t */
sed -i 's|ruby/impl|ruby/internal|' To fix build failures.
2020-05-08 12:31:09 +03:00
#include "ruby/internal/stdbool.h" /* for bool */
internal/variable.h rework Eliminated macros. Also marked MJIT_FUNC_EXPORTED functions as such. Some of them are declared in constant.h so edited that file also.
2019-12-03 09:11:09 +03:00
#include "ruby/ruby.h" /* for VALUE */
Transition shape when object's capacity changes This commit adds a `capacity` field to shapes, and adds shape transitions whenever an object's capacity changes. Objects which are allocated out of a bigger size pool will also make a transition from the root shape to the shape with the correct capacity for their size pool when they are allocated. This commit will allow us to remove numiv from objects completely, and will also mean we can guarantee that if two objects share shapes, their IVs are in the same positions (an embedded and extended object cannot share shapes). This will enable us to implement ivar sets in YJIT using object shapes. Co-Authored-By: Aaron Patterson <tenderlove@ruby-lang.org>
2022-11-08 23:35:31 +03:00
#include "shape.h" /* for rb_shape_t */
internal/variable.h rework Eliminated macros. Also marked MJIT_FUNC_EXPORTED functions as such. Some of them are declared in constant.h so edited that file also.
2019-12-03 09:11:09 +03:00
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
/* variable.c */
void rb_gc_mark_global_tbl(void);
Allow global variables to move This patch allows global variables that have been assigned in Ruby to move. I added a new function for the GC to call that will update global references and introduced a new callback in the global variable struct for updating references. Only pure Ruby global variables are supported right now, other references will be pinned.
2020-05-07 20:07:57 +03:00
void rb_gc_update_global_tbl(void);
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
size_t rb_generic_ivar_memsize(VALUE);
VALUE rb_search_class_path(VALUE);
VALUE rb_attr_delete(VALUE, ID);
void rb_autoload_str(VALUE mod, ID id, VALUE file);
VALUE rb_autoload_at_p(VALUE, ID, int);
NORETURN(VALUE rb_mod_const_missing(VALUE,VALUE));
Use ID instead of GENTRY for gvars. (#3278) Use ID instead of GENTRY for gvars. Global variables are compiled into GENTRY (a pointer to struct rb_global_entry). This patch replace this GENTRY to ID and make the code simple. We need to search GENTRY from ID every time (st_lookup), so additional overhead will be introduced. However, the performance of accessing global variables is not important now a day and this simplicity helps Ractor development.
2020-07-03 10:56:44 +03:00
rb_gvar_getter_t *rb_gvar_getter_function_of(ID);
rb_gvar_setter_t *rb_gvar_setter_function_of(ID);
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
void rb_gvar_readonly_setter(VALUE v, ID id, VALUE *_);
Introduce Ractor mechanism for parallel execution This commit introduces Ractor mechanism to run Ruby program in parallel. See doc/ractor.md for more details about Ractor. See ticket [Feature #17100] to see the implementation details and discussions. [Feature #17100] This commit does not complete the implementation. You can find many bugs on using Ractor. Also the specification will be changed so that this feature is experimental. You will see a warning when you make the first Ractor with `Ractor.new`. I hope this feature can help programmers from thread-safety issues.
2020-03-09 20:22:11 +03:00
void rb_gvar_ractor_local(const char *name);
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
Allow setting the name of a class or module. (#7483) Introduce `Module#set_temporary_name` for setting identifiers for otherwise anonymous modules/classes.
2023-06-21 10:49:51 +03:00
/**
* Sets the name of a module.
*
* Non-permanently named classes can have a temporary name assigned (or
* cleared). In that case the name will be used for `#inspect` and `#to_s`, and
* nested classes/modules will be named with the temporary name as a prefix.
*
* After the module is assigned to a constant, the temporary name will be
* discarded, and the name will be computed based on the nesting.
*
* @param[in] mod An instance of ::rb_cModule.
* @param[in] name An instance of ::rb_cString.
* @retval mod
*/
VALUE rb_mod_set_temporary_name(VALUE, VALUE);
Revert "Revert "This commit implements the Object Shapes technique in CRuby."" This reverts commit 9a6803c90b817f70389cae10d60b50ad752da48f.
2022-10-03 18:14:32 +03:00
struct gen_ivtbl;
int rb_gen_ivtbl_get(VALUE obj, ID id, struct gen_ivtbl **ivtbl);
Transition complex objects to "too complex" shape When an object becomes "too complex" (in other words it has too many variations in the shape tree), we transition it to use a "too complex" shape and use a hash for storing instance variables. Without this patch, there were rare cases where shape tree growth could "explode" and cause performance degradation on what would otherwise have been cached fast paths. This patch puts a limit on shape tree growth, and gracefully degrades in the rare case where there could be a factorial growth in the shape tree. For example: ```ruby class NG; end HUGE_NUMBER.times do NG.new.instance_variable_set(:"@unique_ivar_#{_1}", 1) end ``` We consider objects to be "too complex" when the object's class has more than SHAPE_MAX_VARIATIONS (currently 8) leaf nodes in the shape tree and the object introduces a new variation (a new leaf node) associated with that class. For example, new variations on instances of the following class would be considered "too complex" because those instances create more than 8 leaves in the shape tree: ```ruby class Foo; end 9.times { Foo.new.instance_variable_set(":@uniq_#{_1}", 1) } ``` However, the following class is *not* too complex because it only has one leaf in the shape tree: ```ruby class Foo def initialize @a = @b = @c = @d = @e = @f = @g = @h = @i = nil end end 9.times { Foo.new } `` This case is rare, so we don't expect this change to impact performance of most applications, but it needs to be handled. Co-Authored-By: Aaron Patterson <tenderlove@ruby-lang.org>
2022-12-09 01:16:52 +03:00
int rb_obj_evacuate_ivs_to_hash_table(ID key, VALUE val, st_data_t arg);
Revert "Revert "This commit implements the Object Shapes technique in CRuby."" This reverts commit 9a6803c90b817f70389cae10d60b50ad752da48f.
2022-10-03 18:14:32 +03:00
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
RUBY_SYMBOL_EXPORT_BEGIN
/* variable.c (export) */
Copying GC support for EXIVAR Instance variables held in gen_ivtbl are marked with rb_gc_mark. It prevents the referenced objects from moving, which is bad for copying garbage collectors. This commit allows those instance variables to be updated during gc_update_object_references.
2022-10-27 12:47:47 +03:00
void rb_mark_and_update_generic_ivar(VALUE);
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
void rb_mv_generic_ivar(VALUE src, VALUE dst);
VALUE rb_const_missing(VALUE klass, VALUE name);
int rb_class_ivar_set(VALUE klass, ID vid, VALUE value);
void rb_iv_tbl_copy(VALUE dst, VALUE src);
RUBY_SYMBOL_EXPORT_END
Implement object shapes for T_CLASS and T_MODULE (#6637) * Avoid RCLASS_IV_TBL in marshal.c * Avoid RCLASS_IV_TBL for class names * Avoid RCLASS_IV_TBL for autoload * Avoid RCLASS_IV_TBL for class variables * Avoid copying RCLASS_IV_TBL onto ICLASSes * Use object shapes for Class and Module IVs
2022-11-01 00:05:37 +03:00
VALUE rb_ivar_lookup(VALUE obj, ID id, VALUE undef);
Use ID instead of GENTRY for gvars. (#3278) Use ID instead of GENTRY for gvars. Global variables are compiled into GENTRY (a pointer to struct rb_global_entry). This patch replace this GENTRY to ID and make the code simple. We need to search GENTRY from ID every time (st_lookup), so additional overhead will be introduced. However, the performance of accessing global variables is not important now a day and this simplicity helps Ractor development.
2020-07-03 10:56:44 +03:00
VALUE rb_gvar_get(ID);
VALUE rb_gvar_set(ID, VALUE);
VALUE rb_gvar_defined(ID);
internal/variable.h rework Eliminated macros. Also marked MJIT_FUNC_EXPORTED functions as such. Some of them are declared in constant.h so edited that file also.
2019-12-03 09:11:09 +03:00
void rb_const_warn_if_deprecated(const rb_const_entry_t *, VALUE, ID);
Transition shape when object's capacity changes This commit adds a `capacity` field to shapes, and adds shape transitions whenever an object's capacity changes. Objects which are allocated out of a bigger size pool will also make a transition from the root shape to the shape with the correct capacity for their size pool when they are allocated. This commit will allow us to remove numiv from objects completely, and will also mean we can guarantee that if two objects share shapes, their IVs are in the same positions (an embedded and extended object cannot share shapes). This will enable us to implement ivar sets in YJIT using object shapes. Co-Authored-By: Aaron Patterson <tenderlove@ruby-lang.org>
2022-11-08 23:35:31 +03:00
rb_shape_t * rb_grow_iv_list(VALUE obj);
Revert "Revert "This commit implements the Object Shapes technique in CRuby."" This reverts commit 9a6803c90b817f70389cae10d60b50ad752da48f.
2022-10-03 18:14:32 +03:00
void rb_ensure_iv_list_size(VALUE obj, uint32_t len, uint32_t newsize);
[Bug #19469] Fix crash when resizing generic iv list The following script can sometimes trigger a crash: ```ruby GC.stress = true class Array def foo(bool) if bool @a = 1 @b = 2 @c = 1 else @c = 1 end end end obj = [] obj.foo(true) obj2 = [] obj2.foo(false) obj3 = [] obj3.foo(true) ``` This is because vm_setivar_default calls rb_ensure_generic_iv_list_size to resize the iv list. However, the call to gen_ivtbl_resize reallocs the iv list, and then inserts into the generic iv table. If the st_insert triggers a GC then the old iv list will be read during marking, causing a use-after-free bug. Co-Authored-By: Jemma Issroff <jemmaissroff@gmail.com>
2023-02-28 22:59:33 +03:00
struct gen_ivtbl *rb_ensure_generic_iv_list_size(VALUE obj, rb_shape_t *shape, uint32_t newsize);
Refactor obj_ivar_set and vm_setivar obj_ivar_set and vm_setivar_slowpath is essentially doing the same thing, but the code is duplicated and not quite implemented in the same way, which could cause bugs. This commit refactors vm_setivar_slowpath to use obj_ivar_set.
2022-11-15 18:52:39 +03:00
attr_index_t rb_obj_ivar_set(VALUE obj, ID id, VALUE val);
internal/variable.h rework Eliminated macros. Also marked MJIT_FUNC_EXPORTED functions as such. Some of them are declared in constant.h so edited that file also.
2019-12-03 09:11:09 +03:00
split internal.h into files One day, I could not resist the way it was written. I finally started to make the code clean. This changeset is the beginning of a series of housekeeping commits. It is a simple refactoring; split internal.h into files, so that we can divide and concur in the upcoming commits. No lines of codes are either added or removed, except the obvious file headers/footers. The generated binary is identical to the one before.
2019-11-29 09:18:34 +03:00
#endif /* INTERNAL_VARIABLE_H */