Now that we have mmemory mapped jar files(see bug 504864), it is possible to do zero-copy for uncompressed jars.
See also: bug 510844: Remove memcpy's for compressed jar reading bug 510247: Buffer under run on JAR files
per taras: not a big win here. low priority.
Priority: -- → P3
Whiteboard: [ts][meta] → [ts][meta][necko-would-take]
Bulk change to priority: https://bugzilla.mozilla.org/show_bug.cgi?id=1399258
Priority: P3 → P5
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