From: funny.falcon@...
Date: 2015-06-24T09:08:33+00:00
Subject: [ruby-core:69729] [Ruby trunk - Feature #10585] struct: speedup struct.attr = v for first 10 attributes and struct[:attr] for big structs

Issue #10585 has been updated by Yura Sokolov.


imho, 0001 is very important, cause it gives most of performance improvement for usual case.

For now, I think twice: use struct or object, despite that struct is looking better and provides smaller and cleaner code.
If setter's will be faster, than struct will be much more usable.

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Feature #10585: struct: speedup struct.attr = v for first 10 attributes and struct[:attr] for big structs
https://bugs.ruby-lang.org/issues/10585#change-53110

* Author: Yura Sokolov
* Status: Open
* Priority: Normal
* Assignee: 
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0001 - Define optimized setters for first 10 attributes.

0002 - Cache members definition in an subclasses - it is safe cause it could be modified/overloaded.
And use `rb_attr_get` to lookup definition - it is safe cause result is checked later and `Qnil` is treated as error.

0003,0004 - Use custom hash structure (on top of Array) to lookup members index in a big structure.
Well, I doubt that big structures are useful, so I will not grieve if 0004 is not accepted.

---Files--------------------------------
0001-struct.c-speedup-struct.name-v-for-small-structs.patch (2.33 KB)
0002-struct.c-cache-member-definition-in-a-subclass.patch (1.09 KB)
0003-benchmark-struct-name.patch (2.42 KB)
0004-struct.c-speedup-for-big-structs.patch (5.47 KB)
0002-struct.c-cache-member-definition-in-a-subclass.patch (1.09 KB)


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