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Bug 7488 – Short array optimization for std.bitmanip.BitArray

Status: NEW
Severity: enhancement
Priority: P4
Component: phobos
Product: D
Version: D2
Platform: All
OS: All
Creation time: 2012-02-12T11:59:28Z
Last change time: 2024-12-01T16:14:53Z
Keywords: bootcamp
Assigned to: No Owner
Creator: bearophile_hugs
See also: http://d.puremagic.com/issues/show_bug.cgi?id=7487

Comments

Comment #0 by bearophile_hugs — 2012-02-12T11:59:28Z

An optimization for std.bitmanip.BitArray: when BitArray.length <= (size_t.sizeof * 8), then BitArray.ptr stores the bit themselves (so ptr is in a union with a size_t). If the array of bits is short, this saves a GC allocation, increasing performance and reducing the amount of memory used and garbage produced.

Comment #1 by lovelydear — 2012-04-19T08:54:38Z

See related 7487 and 7490

Comment #2 by robert.schadek — 2024-12-01T16:14:53Z

THIS ISSUE HAS BEEN MOVED TO GITHUB https://github.com/dlang/phobos/issues/9588 DO NOT COMMENT HERE ANYMORE, NOBODY WILL SEE IT, THIS ISSUE HAS BEEN MOVED TO GITHUB