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The type isn't opaque because Ruby isn't often compiled with LTO,
so for optimization purpose it's better to allow as much inlining
as possible.
However ideally only `shape.c` and `shape.h` should deal with
the actual struct, and everything else should just deal with opaque
`shape_id_t`.
Notes:
Merged: https://github.com/ruby/ruby/pull/13586
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Make Kernel#inspect ask which instance variables should be dumped by
the result of `#instance_variables_to_inspect`.
Co-Authored-By: Jean Boussier <[email protected]>
Notes:
Merged: https://github.com/ruby/ruby/pull/13555
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Now that we have the `heap_index` in shape flags we no longer
need `T_OBJECT` shapes.
Notes:
Merged: https://github.com/ruby/ruby/pull/13556
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This is preparation to getting rid of `T_OBJECT` transitions.
By first only replicating the information it's easier to ensure
consistency.
Notes:
Merged: https://github.com/ruby/ruby/pull/13556
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Notes:
Merged: https://github.com/ruby/ruby/pull/13524
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Instead `shape_id_t` higher bits contain flags, and the first one
tells whether the shape is frozen.
This has multiple benefits:
- Can check if a shape is frozen with a single bit check instead of
dereferencing a pointer.
- Guarantees it is always possible to transition to frozen.
- This allow reclaiming `FL_FREEZE` (not done yet).
The downside is you have to be careful to preserve these flags
when transitioning.
Notes:
Merged: https://github.com/ruby/ruby/pull/13289
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Previously we used a flag to set whether a module was uninitialized.
When checked whether a class was initialized, we first had to check that
it had a non-zero superclass, as well as that it wasn't BasicObject.
With the advent of namespaces, RCLASS_SUPER is now an expensive
operation, and though we could just check for the prime superclass, we
might as well take this opportunity to use a flag so that we can perform
the initialized check with as few instructions as possible.
It's possible in the future that we could prevent uninitialized classes
from being available to the user, but currently there are a few ways to
do that.
Notes:
Merged: https://github.com/ruby/ruby/pull/13443
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Notes:
Merged: https://github.com/ruby/ruby/pull/13450
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Notes:
Merged: https://github.com/ruby/ruby/pull/13450
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Notes:
Merged: https://github.com/ruby/ruby/pull/13450
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It still exists but only in `shape.c`.
Notes:
Merged: https://github.com/ruby/ruby/pull/13450
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Notes:
Merged: https://github.com/ruby/ruby/pull/13448
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This makes `RBobject` `4B` larger on 32 bit systems
but simplifies the implementation a lot.
[Feature #21353]
Co-authored-by: Jean Boussier <[email protected]>
Notes:
Merged: https://github.com/ruby/ruby/pull/13341
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Notes:
Merged: https://github.com/ruby/ruby/pull/13420
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Notes:
Merged: https://github.com/ruby/ruby/pull/13350
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Fix a regression introduced by: https://github.com/ruby/ruby/pull/13155
Notes:
Merged: https://github.com/ruby/ruby/pull/13350
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Notes:
Merged: https://github.com/ruby/ruby/pull/13116
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Notes:
Merged: https://github.com/ruby/ruby/pull/13291
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As well as `RB_OBJ_SHAPE_ID` -> `rb_obj_shape_id`
and `RSHAPE` is now a simple alias for `rb_shape_lookup`.
I tried to turn all these into `static inline` but I'm having
trouble with `RUBY_EXTERN rb_shape_tree_t *rb_shape_tree_ptr;`
not being exposed as I'd expect.
Notes:
Merged: https://github.com/ruby/ruby/pull/13283
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And `rb_shape_get_shape` -> `RB_OBJ_SHAPE`.
Notes:
Merged: https://github.com/ruby/ruby/pull/13283
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Notes:
Merged: https://github.com/ruby/ruby/pull/13283
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Notes:
Merged: https://github.com/ruby/ruby/pull/13283
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Notes:
Merged: https://github.com/ruby/ruby/pull/13283
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And get rid of the `obj_to_id_tbl`
It's no longer needed, the `object_id` is now stored inline
in the object alongside instance variables.
We still need the inverse table in case `_id2ref` is invoked, but
we lazily build it by walking the heap if that happens.
The `object_id` concern is also no longer a GC implementation
concern, but a generic implementation.
Co-Authored-By: Matt Valentine-House <[email protected]>
Notes:
Merged: https://github.com/ruby/ruby/pull/13159
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This opens the door to store more informations in shapes, such
as the `object_id` or object address in case it has been observed
and the object has to be moved.
Notes:
Merged: https://github.com/ruby/ruby/pull/13159
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Also refactor checks for `->type == SHAPE_OBJ_TOO_COMPLEX`.
Notes:
Merged: https://github.com/ruby/ruby/pull/13159
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Ivars will longer be the only thing stored inline
via shapes, so keeping the `iv_index` and `ivptr` names
would be confusing.
Instance variables won't be the only thing stored inline
via shapes, so keeping the `ivptr` name would be confusing.
`field` encompass anything that can be stored in a VALUE array.
Similarly, `gen_ivtbl` becomes `gen_fields_tbl`.
Notes:
Merged: https://github.com/ruby/ruby/pull/13159
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Most of this code use the `type * name` style, while the
overwhemling majority of the rest of ruby use the `type *name`
style.
This is a cosmetic change, but helps with readability.
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Notes:
Merged: https://github.com/ruby/ruby/pull/12759
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Notes:
Merged: https://github.com/ruby/ruby/pull/12878
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Issue was visible in https://docs.ruby-lang.org/en/3.4/Kernel.html#module-Kernel-label-IO
Notes:
Merged: https://github.com/ruby/ruby/pull/12613
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Notes:
Merged: https://github.com/ruby/ruby/pull/12496
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Notes:
Merged: https://github.com/ruby/ruby/pull/12496
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The inspect format was intentionally changed as an outcome of
[Bug #20433] [ruby-core:118668], but some documentation update
was missing, as [Bug #20962] pointed out. Update some output
examples that clearly use Hash#inspect.
Notes:
Merged: https://github.com/ruby/ruby/pull/12384
Merged-By: XrXr
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[DOC] Rewrite argument unpacking docs and document **nil
Notes:
Merged-By: zverok <[email protected]>
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* Use FL_USER0 for ELTS_SHARED
This makes space in RString for two bits for chilled strings.
* Mark strings returned by `Symbol#to_s` as chilled
[Feature #20350]
`STR_CHILLED` now spans on two user flags. If one bit is set it
marks a chilled string literal, if it's the other it marks a
`Symbol#to_s` chilled string.
Since it's not possible, and doesn't make much sense to include
debug info when `--debug-frozen-string-literal` is set, we can't
include allocation source, but we can safely include the symbol
name in the warning message, making it much easier to find the source
of the issue.
Co-Authored-By: Étienne Barrié <[email protected]>
---------
Co-authored-by: Étienne Barrié <[email protected]>
Co-authored-by: Jean Boussier <[email protected]>
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Now that we've inlined the eden_heap into the size_pool, we should
rename the size_pool to heap. So that Ruby contains multiple heaps, with
different sized objects.
The term heap as a collection of memory pages is more in memory
management nomenclature, whereas size_pool was a name chosen out of
necessity during the development of the Variable Width Allocation
features of Ruby.
The concept of size pools was introduced in order to facilitate
different sized objects (other than the default 40 bytes). They wrapped
the eden heap and the tomb heap, and some related state, and provided a
reasonably simple way of duplicating all related concerns, to provide
multiple pools that all shared the same structure but held different
objects.
Since then various changes have happend in Ruby's memory layout:
* The concept of tomb heaps has been replaced by a global free pages list,
with each page having it's slot size reconfigured at the point when it
is resurrected
* the eden heap has been inlined into the size pool itself, so that now
the size pool directly controls the free_pages list, the sweeping
page, the compaction cursor and the other state that was previously
being managed by the eden heap.
Now that there is no need for a heap wrapper, we should refer to the
collection of pages containing Ruby objects as a heap again rather than
a size pool
Notes:
Merged: https://github.com/ruby/ruby/pull/11771
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Notes:
Merged: https://github.com/ruby/ruby/pull/11564
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Notes:
Merged: https://github.com/ruby/ruby/pull/11564
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Notes:
Merged-By: peterzhu2118 <[email protected]>
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Previously, passing objects that respond to #to_int to `String#setbyte`
resulted in a crash when compiled by YJIT. This was due to the lazily
pushed frame from rb_yjit_lazy_push_frame() lingering and not being
popped by an exception as expected.
The fix is to ensure that `ec->cfp` is restored to before the lazy frame
push in case the method call for conversion succeeds. Right now, this is
only for conversion to integers.
Found running `ruby/spec`.
* clarify comment
We just need to make sure `ec->cfp` is always preserved and this can
convert without rising when `raise` is true.
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This function checks the CL's superclasses containing the class C at
the end of it. That means C is a superclass of CL, not a subclass.
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This PR moves `rb_copy_wb_protected_attribute` and
`rb_gc_copy_finalizer` into a single function called
`rb_gc_copy_attributes` to be called by `init_copy`. This reduces the
surface area of the GC API.
Co-authored-by: Peter Zhu <[email protected]>
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The current implementation raises on the call to super
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[Feature #20205]
As a path toward enabling frozen string literals by default in the future,
this commit introduce "chilled strings". From a user perspective chilled
strings pretend to be frozen, but on the first attempt to mutate them,
they lose their frozen status and emit a warning rather than to raise a
`FrozenError`.
Implementation wise, `rb_compile_option_struct.frozen_string_literal` is
no longer a boolean but a tri-state of `enabled/disabled/unset`.
When code is compiled with frozen string literals neither explictly enabled
or disabled, string literals are compiled with a new `putchilledstring`
instruction. This instruction is identical to `putstring` except it marks
the String with the `STR_CHILLED (FL_USER3)` and `FL_FREEZE` flags.
Chilled strings have the `FL_FREEZE` flag as to minimize the need to check
for chilled strings across the codebase, and to improve compatibility with
C extensions.
Notes:
- `String#freeze`: clears the chilled flag.
- `String#-@`: acts as if the string was mutable.
- `String#+@`: acts as if the string was mutable.
- `String#clone`: copies the chilled flag.
Co-authored-by: Jean Boussier <[email protected]>
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