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* remove false call-seq (output from Ruby parsing is cleaner)
* explain output: argument in plain words
* change parameter name in docs of #dump_shapes (typo)
Notes:
Merged: https://github.com/ruby/ruby/pull/7316
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I see several arguments in doing so.
First they use a non trivial amount of memory, so for various memory
profiling/mapping tools it is relevant to have visibility of the space
occupied by shapes.
Then, some pathological code can create a tons of shape, so it is
valuable to have a way to have a way to observe shapes without having
to compile Ruby with `SHAPE_DEBUG=1`.
And additionally it's likely much faster to dump then this way than
to use `RubyVM::Shape`.
There are however a few open questions:
- Shapes can't respect the `since:` argument. Not sure what to do when
it is provided. Would probably make sense to not dump them.
- Maybe it would make more sense to have a separate `ObjectSpace.dump_shapes`?
- Maybe instead `dump_all` should take a `shapes: false` argument?
Additionally, `ObjectSpace.dump_shapes` is added for the use case of
debugging the evolution of the shape tree.
Notes:
Merged: https://github.com/ruby/ruby/pull/6868
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RDoc says `ObjectSpace.dump(obj, output: :stdout) # => nil`,
but it returns STDOUT since fbba6bd4e3dff7a61965208fecae908f10c4edbe.
I think it is unintentional change.
Notes:
Merged: https://github.com/ruby/ruby/pull/3620
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[Feature #17045] ObjectSpace.dump_all should allocate as little as possible in the GC heap
Up until this commit ObjectSpace.dump_all allocates two Hash because of `rb_scan_args`.
It also can allocate a `File` because of `rb_io_get_write_io`.
These allocations are problematic because `dump_all` dumps the Ruby
heap, so it should try modify as little as possible what it is
observing.
Notes:
Merged: https://github.com/ruby/ruby/pull/3530
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