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Commit Graph

6 Commits

Author SHA1 Message Date
Nick Craig-Wood
451f4c2a8f onedrive: fix quickxorhash on 32 bit architectures
Before this fix quickxorhash would sometimes crash with an error like
this:

    panic: runtime error: slice bounds out of range [-1248:]

This was caused by an incorrect cast of a 64 bit number to a 32 bit
one on 32 bit platforms.

See: https://forum.rclone.org/t/panic-runtime-error-slice-bounds-out-of-range/37548
2023-04-13 15:14:46 +01:00
LXY
dc5d5de35c
onedrive: improve speed of quickxorhash
This commits ports a fast C-implementation from https://github.com/namazso/QuickXorHash

It uses new crypto/subtle code from go1.20 to avoid the use of unsafe.

Typical speedups are about 25x  when using go1.20

    goos: linux
    goarch: amd64
    cpu: Intel(R) Celeron(R) N5105 @ 2.00GHz
    QuickXorHash-Before  2.49ms   422MB/s ±11%   100.00%
    QuickXorHash-Subtle  87.9µs 11932MB/s ± 5% +2730.83% + 42.17%

Co-Author: @namazso
2023-01-26 11:50:12 +00:00
Isaac Levy
be1a668e95
onedrive: minor optimization of quickxorhash
This patch avoids creating a new slice header in favour of a for loop.

This saves a few instructions!
2022-01-14 17:30:56 +00:00
Oleg Kovalov
06c9f76cd2 all: fix go-critic linter suggestions 2018-08-06 21:14:03 +01:00
Nick Craig-Wood
1320e84bc2 build: remove unused code spotted by the deadcode linter 2018-05-05 17:32:41 +01:00
Nick Craig-Wood
57a5b72d60 onedrive: implement quickXorHash algorithm #2262 2018-04-20 21:02:37 +01:00