[ruby-core:85554] [Ruby trunk Feature#8158][Closed] lightweight structure for loaded features index

Issue #8158 has been updated by tenderlovemaking (Aaron Patterson).

Status changed from Assigned to Closed

Committed in r62404.  Thanks Yura!!

----------------------------------------
Feature #8158: lightweight structure for loaded features index
https://bugs.ruby-lang.org/issues/8158#change-70347

* Author: funny_falcon (Yura Sokolov)
* Status: Closed
* Priority: Normal
* Assignee: nobu (Nobuyoshi Nakada)
* Target version: 
----------------------------------------
Use lightweight structure for loaded_features index:

- use hand made simple hash structure, which uses only one memory chunk,
- do not store feature name string, only hash of it, since loaded_feature_path
  will recheck feature name on hash collision
- use single linked lists instead of arrays for storing features indices.
- store this lists inside one array, using array's indices as a reference.

While startup speedup improvement is relatively small compared current implementation,
this one does not need any Ruby Objects at all, so that there is no presure on GC.

https://github.com/ruby/ruby/pull/264.patch
https://github.com/ruby/ruby/pull/264.diff
https://github.com/ruby/ruby/pull/264

---Files--------------------------------
0001-load.c-reduce-memory-usage-of-loaded_features_index.patch (5.99 KB)
load.c-loaded_features_numindex.patch (4.99 KB)


-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:[e-mail]?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>