[
https://issues.apache.org/jira/browse/PDFBOX-3432?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Tilman Hausherr resolved PDFBOX-3432.
-------------------------------------
Resolution: Fixed
Assignee: Tilman Hausherr
Nothing has happened for 5 months here, and we're satisfied with the changes
that were made, so I'll set this one to resolved. Please create a new issue for
any further work.
I've been very positive on all the changes done even if they have an impact
only for niche users (embedded systems), only the last proposed change seemed
to be a bit too complex.
> Optimize CID to GlyphId mapping (TTF)
> -------------------------------------
>
> Key: PDFBOX-3432
> URL: https://issues.apache.org/jira/browse/PDFBOX-3432
> Project: PDFBox
> Issue Type: Improvement
> Components: FontBox
> Affects Versions: 2.0.1, 2.0.2, 2.0.3
> Environment: Ubuntu 14.04.4 LTS
> Reporter: Michael Doswald
> Assignee: Tilman Hausherr
> Priority: Trivial
> Labels: optimization, performance
> Fix For: 2.0.4, 2.1.0
>
> Attachments: PDFBOX-3432_Optimize_CID_to_GlyphId_mapping_rev1.patch,
> fontbox-benchmark-CustomMap-VS-GSCollections.zip,
> patch_for_CustomMap_VS_GSCollections_benchmark.patch,
> pdfbox-performance-PDFBOX-3432.zip
>
>
> TTF fonts map code-points (Code IDs) to glyphs. These are mappings from int
> to int. Because the JDK lacks map classes for primitive types, the code (e.g.
> in CmapSubtable) currently uses Map<Integer,Integer> for those mappings. This
> is inefficient in different ways:
> * Autoboxing/unboxing introduces a performance penalty
> * Boxing to Integer objects has a memory overhead
> * The JDK Map implementation has a big memory overhead for such simple objects
> For efficiency (execution time and memory consumption) I would propose to
> introduce a simple IntIntMap implementation which works with primitive
> integers.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscr...@pdfbox.apache.org
For additional commands, e-mail: dev-h...@pdfbox.apache.org
