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Merge pull request #25528 from giuseppe/fix-mount-leak

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update c/storage
This commit is contained in:
openshift-merge-bot[bot]
2025-03-11 13:05:35 +00:00
committed by GitHub
parent d39806258a 2ffb3a19b3
commit 47003f76db
42 changed files with 420 additions and 452 deletions
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4
go.mod
View File

@ -21,7 +21,7 @@ require (
github.com/containers/libhvee v0.10.0
github.com/containers/ocicrypt v1.2.1
github.com/containers/psgo v1.9.0
github.com/containers/storage v1.57.2-0.20250228100055-700b765b2111
github.com/containers/storage v1.57.3-0.20250310120440-ab85543c3c6a
github.com/containers/winquit v1.1.0
github.com/coreos/go-systemd/v22 v22.5.1-0.20231103132048-7d375ecc2b09
github.com/crc-org/crc/v2 v2.45.0
@ -156,7 +156,7 @@ require (
github.com/inconshreveable/mousetrap v1.1.0 // indirect
github.com/jinzhu/copier v0.4.0 // indirect
github.com/josharian/intern v1.0.0 // indirect
github.com/klauspost/compress v1.17.11 // indirect
github.com/klauspost/compress v1.18.0 // indirect
github.com/klauspost/cpuid/v2 v2.2.9 // indirect
github.com/kr/fs v0.1.0 // indirect
github.com/leodido/go-urn v1.4.0 // indirect

8
go.sum
View File

@ -96,8 +96,8 @@ github.com/containers/ocicrypt v1.2.1 h1:0qIOTT9DoYwcKmxSt8QJt+VzMY18onl9jUXsxpV
github.com/containers/ocicrypt v1.2.1/go.mod h1:aD0AAqfMp0MtwqWgHM1bUwe1anx0VazI108CRrSKINQ=
github.com/containers/psgo v1.9.0 h1:eJ74jzSaCHnWt26OlKZROSyUyRcGDf+gYBdXnxrMW4g=
github.com/containers/psgo v1.9.0/go.mod h1:0YoluUm43Mz2UnBIh1P+6V6NWcbpTL5uRtXyOcH0B5A=
github.com/containers/storage v1.57.2-0.20250228100055-700b765b2111 h1:NMmaECeWzq2cWAXfPnsl7oFc2jyb/YRcPbzYT8jpQUA=
github.com/containers/storage v1.57.2-0.20250228100055-700b765b2111/go.mod h1:egC90qMy0fTpGjkaHj667syy1Cbr3XPZEVX/qkUPrdM=
github.com/containers/storage v1.57.3-0.20250310120440-ab85543c3c6a h1:mg4hUluPeujWDzJ+UYYCkp+vI6tQp1NtNGY1lXzpVX4=
github.com/containers/storage v1.57.3-0.20250310120440-ab85543c3c6a/go.mod h1:+TX1GlBD/Aj65Yr4duNoeBIk7Ka3k+nf3HjQ4qLJaLQ=
github.com/containers/winquit v1.1.0 h1:jArun04BNDQvt2W0Y78kh9TazN2EIEMG5Im6/JY7+pE=
github.com/containers/winquit v1.1.0/go.mod h1:PsPeZlnbkmGGIToMPHF1zhWjBUkd8aHjMOr/vFcPxw8=
github.com/coreos/go-oidc/v3 v3.12.0 h1:sJk+8G2qq94rDI6ehZ71Bol3oUHy63qNYmkiSjrc/Jo=
@ -308,8 +308,8 @@ github.com/kevinburke/ssh_config v1.2.0 h1:x584FjTGwHzMwvHx18PXxbBVzfnxogHaAReU4
github.com/kevinburke/ssh_config v1.2.0/go.mod h1:CT57kijsi8u/K/BOFA39wgDQJ9CxiF4nAY/ojJ6r6mM=
github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
github.com/klauspost/compress v1.17.11 h1:In6xLpyWOi1+C7tXUUWv2ot1QvBjxevKAaI6IXrJmUc=
github.com/klauspost/compress v1.17.11/go.mod h1:pMDklpSncoRMuLFrf1W9Ss9KT+0rH90U12bZKk7uwG0=
github.com/klauspost/compress v1.18.0 h1:c/Cqfb0r+Yi+JtIEq73FWXVkRonBlf0CRNYc8Zttxdo=
github.com/klauspost/compress v1.18.0/go.mod h1:2Pp+KzxcywXVXMr50+X0Q/Lsb43OQHYWRCY2AiWywWQ=
github.com/klauspost/cpuid/v2 v2.0.9/go.mod h1:FInQzS24/EEf25PyTYn52gqo7WaD8xa0213Md/qVLRg=
github.com/klauspost/cpuid/v2 v2.2.9 h1:66ze0taIn2H33fBvCkXuv9BmCwDfafmiIVpKV9kKGuY=
github.com/klauspost/cpuid/v2 v2.2.9/go.mod h1:rqkxqrZ1EhYM9G+hXH7YdowN5R5RGN6NK4QwQ3WMXF8=

16
libpod/oci_conmon_linux.go
View File

@ -89,14 +89,16 @@ func (r *ConmonOCIRuntime) createRootlessContainer(ctr *Container, restoreOption
}
}
// do not propagate the bind mount on the parent mount namespace
if err := unix.Mount("", parentMount, "", unix.MS_SLAVE, ""); err != nil {
return 0, fmt.Errorf("failed to make %s slave: %w", parentMount, err)
}
// bind mount the containers' mount path to the path where the OCI runtime expects it to be
if err := unix.Mount(ctr.state.Mountpoint, rootPath, "", unix.MS_BIND, ""); err != nil {
return 0, fmt.Errorf("failed to bind mount %s to %s: %w", ctr.state.Mountpoint, rootPath, err)
// if the container is already mounted at the expected path, do not cover the mountpoint.
if filepath.Clean(ctr.state.Mountpoint) != filepath.Clean(rootPath) {
// do not propagate the bind mount on the parent mount namespace
if err := unix.Mount("", parentMount, "", unix.MS_SLAVE, ""); err != nil {
return 0, fmt.Errorf("failed to make %s slave: %w", parentMount, err)
}
if err := unix.Mount(ctr.state.Mountpoint, rootPath, "", unix.MS_BIND, ""); err != nil {
return 0, fmt.Errorf("failed to bind mount %s to %s: %w", ctr.state.Mountpoint, rootPath, err)
}
}
if isShared {

9
test/system/030-run.bats
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@ -1419,17 +1419,23 @@ EOF
# Any other error is fatal
die "Cannot create idmap mount: $output"
fi
ensure_no_mountpoint "$romount"
run_podman run --security-opt label=disable --rm --uidmap=0:1000:10000 --rootfs $romount:idmap stat -c %u:%g /bin
mkdir -p $PODMAN_TMPDIR/shared-volume
# test that there are no mount leaks also when a shared volume is used (with a shared volume the rootfs propagation is set to shared).
run_podman run --security-opt label=disable --rm --uidmap=0:1000:10000 -v $PODMAN_TMPDIR/shared-volume:/a-shared-volume:shared --rootfs $romount:idmap stat -c %u:%g /bin
is "$output" "0:0"
ensure_no_mountpoint "$romount"
run_podman run --security-opt label=disable --uidmap=0:1000:10000 --rm --rootfs "$romount:idmap=uids=0-1001-10000;gids=0-1002-10000" stat -c %u:%g /bin
is "$output" "1:2"
ensure_no_mountpoint "$romount"
touch $romount/testfile
chown 2000:2000 $romount/testfile
run_podman run --security-opt label=disable --uidmap=0:1000:200 --rm --rootfs "$romount:idmap=uids=@2000-1-1;gids=@2000-1-1" stat -c %u:%g /testfile
is "$output" "1:1"
ensure_no_mountpoint "$romount"
# verify that copyup with an empty idmap volume maintains the original ownership with different mappings and --rootfs
myvolume=my-volume-$(safename)
@ -1439,6 +1445,7 @@ EOF
for FROM in 1000 2000; do
run_podman run --security-opt label=disable --rm --uidmap=0:$FROM:10000 -v $myvolume:/volume:idmap --rootfs $romount stat -c %u:%g /volume
is "$output" "0:0"
ensure_no_mountpoint "$romount"
done
run_podman volume rm $myvolume

4
test/system/060-mount.bats
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@ -309,9 +309,7 @@ EOF
# umount, and make sure mountpoint no longer exists
run_podman umount $external_cname
if findmnt "$mount_path" >/dev/null ; then
die "'podman umount' did not umount $mount_path"
fi
ensure_no_mountpoint "$mount_path"
buildah rm $external_cname
}

11
test/system/helpers.bash
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@ -1361,5 +1361,16 @@ function make_random_file() {
dd if=/dev/urandom of="$1" bs=1 count=${2:-$((${RANDOM} % 8192 + 1024))} status=none
}
###########################
# ensure there is no mount point at the specified path
###########################
function ensure_no_mountpoint() {
local path="$1"
if findmnt "$path"; then
die "there is a mountpoint at $path"
fi
}
# END miscellaneous tools
###############################################################################

2
vendor/github.com/containers/storage/Makefile generated vendored
View File

@ -35,7 +35,7 @@ TESTFLAGS := $(shell $(GO) test -race $(BUILDFLAGS) ./pkg/stringutils 2>&1 > /de
# N/B: This value is managed by Renovate, manual changes are
# possible, as long as they don't disturb the formatting
# (i.e. DO NOT ADD A 'v' prefix!)
GOLANGCI_LINT_VERSION := 1.64.5
GOLANGCI_LINT_VERSION := 1.64.6
default all: local-binary docs local-validate local-cross ## validate all checks, build and cross-build\nbinaries and docs

2
vendor/github.com/containers/storage/pkg/chunked/storage_linux.go generated vendored
View File

@ -162,6 +162,8 @@ func (c *chunkedDiffer) convertTarToZstdChunked(destDirectory string, payload *o
return 0, nil, "", nil, err
}
defer diff.Close()
fd, err := unix.Open(destDirectory, unix.O_TMPFILE|unix.O_RDWR|unix.O_CLOEXEC, 0o600)
if err != nil {
return 0, nil, "", nil, &fs.PathError{Op: "open", Path: destDirectory, Err: err}

5
vendor/github.com/containers/storage/pkg/idmap/idmapped_utils.go generated vendored
View File

@ -33,8 +33,9 @@ func CreateIDMappedMount(source, target string, pid int) error {
if err := unix.MountSetattr(targetDirFd, "", unix.AT_EMPTY_PATH|unix.AT_RECURSIVE,
&unix.MountAttr{
Attr_set: unix.MOUNT_ATTR_IDMAP,
Userns_fd: uint64(userNsFile.Fd()),
Attr_set: unix.MOUNT_ATTR_IDMAP,
Userns_fd: uint64(userNsFile.Fd()),
Propagation: unix.MS_PRIVATE,
}); err != nil {
return &os.PathError{Op: "mount_setattr", Path: source, Err: err}
}

26
vendor/github.com/containers/storage/pkg/loopback/loop_wrapper.go generated vendored
View File

@ -2,6 +2,10 @@
package loopback
import (
"golang.org/x/sys/unix"
)
type loopInfo64 struct {
loDevice uint64 /* ioctl r/o */
loInode uint64 /* ioctl r/o */
@ -20,19 +24,19 @@ type loopInfo64 struct {
// IOCTL consts
const (
LoopSetFd = 0x4C00
LoopCtlGetFree = 0x4C82
LoopGetStatus64 = 0x4C05
LoopSetStatus64 = 0x4C04
LoopClrFd = 0x4C01
LoopSetCapacity = 0x4C07
LoopSetFd = unix.LOOP_SET_FD
LoopCtlGetFree = unix.LOOP_CTL_GET_FREE
LoopGetStatus64 = unix.LOOP_GET_STATUS64
LoopSetStatus64 = unix.LOOP_SET_STATUS64
LoopClrFd = unix.LOOP_CLR_FD
LoopSetCapacity = unix.LOOP_SET_CAPACITY
)
// LOOP consts.
const (
LoFlagsAutoClear = 0x4C07
LoFlagsReadOnly = 1
LoFlagsPartScan = 8
LoKeySize = 32
LoNameSize = 64
LoFlagsAutoClear = unix.LO_FLAGS_AUTOCLEAR
LoFlagsReadOnly = unix.LO_FLAGS_READ_ONLY
LoFlagsPartScan = unix.LO_FLAGS_PARTSCAN
LoKeySize = unix.LO_KEY_SIZE
LoNameSize = unix.LO_NAME_SIZE
)

140
vendor/github.com/klauspost/compress/README.md generated vendored
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@ -14,8 +14,34 @@ This package provides various compression algorithms.
[![Go](https://github.com/klauspost/compress/actions/workflows/go.yml/badge.svg)](https://github.com/klauspost/compress/actions/workflows/go.yml)
[![Sourcegraph Badge](https://sourcegraph.com/github.com/klauspost/compress/-/badge.svg)](https://sourcegraph.com/github.com/klauspost/compress?badge)
# package usage
Use `go get github.com/klauspost/compress@latest` to add it to your project.
This package will support the current Go version and 2 versions back.
* Use the `nounsafe` tag to disable all use of the "unsafe" package.
* Use the `noasm` tag to disable all assembly across packages.
Use the links above for more information on each.
# changelog
* Feb 19th, 2025 - [1.18.0](https://github.com/klauspost/compress/releases/tag/v1.18.0)
* Add unsafe little endian loaders https://github.com/klauspost/compress/pull/1036
* fix: check `r.err != nil` but return a nil value error `err` by @alingse in https://github.com/klauspost/compress/pull/1028
* flate: Simplify L4-6 loading https://github.com/klauspost/compress/pull/1043
* flate: Simplify matchlen (remove asm) https://github.com/klauspost/compress/pull/1045
* s2: Improve small block compression speed w/o asm https://github.com/klauspost/compress/pull/1048
* flate: Fix matchlen L5+L6 https://github.com/klauspost/compress/pull/1049
* flate: Cleanup & reduce casts https://github.com/klauspost/compress/pull/1050
* Oct 11th, 2024 - [1.17.11](https://github.com/klauspost/compress/releases/tag/v1.17.11)
* zstd: Fix extra CRC written with multiple Close calls https://github.com/klauspost/compress/pull/1017
* s2: Don't use stack for index tables https://github.com/klauspost/compress/pull/1014
* gzhttp: No content-type on no body response code by @juliens in https://github.com/klauspost/compress/pull/1011
* gzhttp: Do not set the content-type when response has no body by @kevinpollet in https://github.com/klauspost/compress/pull/1013
* Sep 23rd, 2024 - [1.17.10](https://github.com/klauspost/compress/releases/tag/v1.17.10)
* gzhttp: Add TransportAlwaysDecompress option. https://github.com/klauspost/compress/pull/978
* gzhttp: Add supported decompress request body by @mirecl in https://github.com/klauspost/compress/pull/1002
@ -65,9 +91,9 @@ https://github.com/klauspost/compress/pull/919 https://github.com/klauspost/comp
* zstd: Fix rare *CORRUPTION* output in "best" mode. See https://github.com/klauspost/compress/pull/876
* Oct 14th, 2023 - [v1.17.1](https://github.com/klauspost/compress/releases/tag/v1.17.1)
* s2: Fix S2 "best" dictionary wrong encoding by @klauspost in https://github.com/klauspost/compress/pull/871
* s2: Fix S2 "best" dictionary wrong encoding https://github.com/klauspost/compress/pull/871
* flate: Reduce allocations in decompressor and minor code improvements by @fakefloordiv in https://github.com/klauspost/compress/pull/869
* s2: Fix EstimateBlockSize on 6&7 length input by @klauspost in https://github.com/klauspost/compress/pull/867
* s2: Fix EstimateBlockSize on 6&7 length input https://github.com/klauspost/compress/pull/867
* Sept 19th, 2023 - [v1.17.0](https://github.com/klauspost/compress/releases/tag/v1.17.0)
* Add experimental dictionary builder https://github.com/klauspost/compress/pull/853
@ -124,7 +150,7 @@ https://github.com/klauspost/compress/pull/919 https://github.com/klauspost/comp
<summary>See changes to v1.15.x</summary>
* Jan 21st, 2023 (v1.15.15)
* deflate: Improve level 7-9 by @klauspost in https://github.com/klauspost/compress/pull/739
* deflate: Improve level 7-9 https://github.com/klauspost/compress/pull/739
* zstd: Add delta encoding support by @greatroar in https://github.com/klauspost/compress/pull/728
* zstd: Various speed improvements by @greatroar https://github.com/klauspost/compress/pull/741 https://github.com/klauspost/compress/pull/734 https://github.com/klauspost/compress/pull/736 https://github.com/klauspost/compress/pull/744 https://github.com/klauspost/compress/pull/743 https://github.com/klauspost/compress/pull/745
* gzhttp: Add SuffixETag() and DropETag() options to prevent ETag collisions on compressed responses by @willbicks in https://github.com/klauspost/compress/pull/740
@ -167,7 +193,7 @@ https://github.com/klauspost/compress/pull/919 https://github.com/klauspost/comp
* zstd: Fix decoder crash on amd64 (no BMI) on invalid input https://github.com/klauspost/compress/pull/645
* zstd: Disable decoder extended memory copies (amd64) due to possible crashes https://github.com/klauspost/compress/pull/644
* zstd: Allow single segments up to "max decoded size" by @klauspost in https://github.com/klauspost/compress/pull/643
* zstd: Allow single segments up to "max decoded size" https://github.com/klauspost/compress/pull/643
* July 13, 2022 (v1.15.8)
@ -209,7 +235,7 @@ https://github.com/klauspost/compress/pull/919 https://github.com/klauspost/comp
* zstd: Speed up when WithDecoderLowmem(false) https://github.com/klauspost/compress/pull/599
* zstd: faster next state update in BMI2 version of decode by @WojciechMula in https://github.com/klauspost/compress/pull/593
* huff0: Do not check max size when reading table. https://github.com/klauspost/compress/pull/586
* flate: Inplace hashing for level 7-9 by @klauspost in https://github.com/klauspost/compress/pull/590
* flate: Inplace hashing for level 7-9 https://github.com/klauspost/compress/pull/590
* May 11, 2022 (v1.15.4)
@ -236,12 +262,12 @@ https://github.com/klauspost/compress/pull/919 https://github.com/klauspost/comp
* zstd: Add stricter block size checks in [#523](https://github.com/klauspost/compress/pull/523)
* Mar 3, 2022 (v1.15.0)
* zstd: Refactor decoder by @klauspost in [#498](https://github.com/klauspost/compress/pull/498)
* zstd: Add stream encoding without goroutines by @klauspost in [#505](https://github.com/klauspost/compress/pull/505)
* zstd: Refactor decoder [#498](https://github.com/klauspost/compress/pull/498)
* zstd: Add stream encoding without goroutines [#505](https://github.com/klauspost/compress/pull/505)
* huff0: Prevent single blocks exceeding 16 bits by @klauspost in[#507](https://github.com/klauspost/compress/pull/507)
* flate: Inline literal emission by @klauspost in [#509](https://github.com/klauspost/compress/pull/509)
* gzhttp: Add zstd to transport by @klauspost in [#400](https://github.com/klauspost/compress/pull/400)
* gzhttp: Make content-type optional by @klauspost in [#510](https://github.com/klauspost/compress/pull/510)
* flate: Inline literal emission [#509](https://github.com/klauspost/compress/pull/509)
* gzhttp: Add zstd to transport [#400](https://github.com/klauspost/compress/pull/400)
* gzhttp: Make content-type optional [#510](https://github.com/klauspost/compress/pull/510)
Both compression and decompression now supports "synchronous" stream operations. This means that whenever "concurrency" is set to 1, they will operate without spawning goroutines.
@ -258,7 +284,7 @@ While the release has been extensively tested, it is recommended to testing when
* flate: Fix rare huffman only (-2) corruption. [#503](https://github.com/klauspost/compress/pull/503)
* zip: Update deprecated CreateHeaderRaw to correctly call CreateRaw by @saracen in [#502](https://github.com/klauspost/compress/pull/502)
* zip: don't read data descriptor early by @saracen in [#501](https://github.com/klauspost/compress/pull/501) #501
* huff0: Use static decompression buffer up to 30% faster by @klauspost in [#499](https://github.com/klauspost/compress/pull/499) [#500](https://github.com/klauspost/compress/pull/500)
* huff0: Use static decompression buffer up to 30% faster [#499](https://github.com/klauspost/compress/pull/499) [#500](https://github.com/klauspost/compress/pull/500)
* Feb 17, 2022 (v1.14.3)
* flate: Improve fastest levels compression speed ~10% more throughput. [#482](https://github.com/klauspost/compress/pull/482) [#489](https://github.com/klauspost/compress/pull/489) [#490](https://github.com/klauspost/compress/pull/490) [#491](https://github.com/klauspost/compress/pull/491) [#494](https://github.com/klauspost/compress/pull/494) [#478](https://github.com/klauspost/compress/pull/478)
@ -565,12 +591,14 @@ While the release has been extensively tested, it is recommended to testing when
The packages are drop-in replacements for standard libraries. Simply replace the import path to use them:
| old import | new import | Documentation
|--------------------|-----------------------------------------|--------------------|
| `compress/gzip` | `github.com/klauspost/compress/gzip` | [gzip](https://pkg.go.dev/github.com/klauspost/compress/gzip?tab=doc)
| `compress/zlib` | `github.com/klauspost/compress/zlib` | [zlib](https://pkg.go.dev/github.com/klauspost/compress/zlib?tab=doc)
| `archive/zip` | `github.com/klauspost/compress/zip` | [zip](https://pkg.go.dev/github.com/klauspost/compress/zip?tab=doc)
| `compress/flate` | `github.com/klauspost/compress/flate` | [flate](https://pkg.go.dev/github.com/klauspost/compress/flate?tab=doc)
Typical speed is about 2x of the standard library packages.
| old import | new import | Documentation |
|------------------|---------------------------------------|-------------------------------------------------------------------------|
| `compress/gzip` | `github.com/klauspost/compress/gzip` | [gzip](https://pkg.go.dev/github.com/klauspost/compress/gzip?tab=doc) |
| `compress/zlib` | `github.com/klauspost/compress/zlib` | [zlib](https://pkg.go.dev/github.com/klauspost/compress/zlib?tab=doc) |
| `archive/zip` | `github.com/klauspost/compress/zip` | [zip](https://pkg.go.dev/github.com/klauspost/compress/zip?tab=doc) |
| `compress/flate` | `github.com/klauspost/compress/flate` | [flate](https://pkg.go.dev/github.com/klauspost/compress/flate?tab=doc) |
* Optimized [deflate](https://godoc.org/github.com/klauspost/compress/flate) packages which can be used as a dropin replacement for [gzip](https://godoc.org/github.com/klauspost/compress/gzip), [zip](https://godoc.org/github.com/klauspost/compress/zip) and [zlib](https://godoc.org/github.com/klauspost/compress/zlib).
@ -625,84 +653,6 @@ This will only use up to 4KB in memory when the writer is idle.
Compression is almost always worse than the fastest compression level
and each write will allocate (a little) memory.
# Performance Update 2018
It has been a while since we have been looking at the speed of this package compared to the standard library, so I thought I would re-do my tests and give some overall recommendations based on the current state. All benchmarks have been performed with Go 1.10 on my Desktop Intel(R) Core(TM) i7-2600 CPU @3.40GHz. Since I last ran the tests, I have gotten more RAM, which means tests with big files are no longer limited by my SSD.
The raw results are in my [updated spreadsheet](https://docs.google.com/spreadsheets/d/1nuNE2nPfuINCZJRMt6wFWhKpToF95I47XjSsc-1rbPQ/edit?usp=sharing). Due to cgo changes and upstream updates i could not get the cgo version of gzip to compile. Instead I included the [zstd](https://github.com/datadog/zstd) cgo implementation. If I get cgo gzip to work again, I might replace the results in the sheet.
The columns to take note of are: *MB/s* - the throughput. *Reduction* - the data size reduction in percent of the original. *Rel Speed* relative speed compared to the standard library at the same level. *Smaller* - how many percent smaller is the compressed output compared to stdlib. Negative means the output was bigger. *Loss* means the loss (or gain) in compression as a percentage difference of the input.
The `gzstd` (standard library gzip) and `gzkp` (this package gzip) only uses one CPU core. [`pgzip`](https://github.com/klauspost/pgzip), [`bgzf`](https://github.com/biogo/hts/tree/master/bgzf) uses all 4 cores. [`zstd`](https://github.com/DataDog/zstd) uses one core, and is a beast (but not Go, yet).
## Overall differences.
There appears to be a roughly 5-10% speed advantage over the standard library when comparing at similar compression levels.
The biggest difference you will see is the result of [re-balancing](https://blog.klauspost.com/rebalancing-deflate-compression-levels/) the compression levels. I wanted by library to give a smoother transition between the compression levels than the standard library.
This package attempts to provide a more smooth transition, where "1" is taking a lot of shortcuts, "5" is the reasonable trade-off and "9" is the "give me the best compression", and the values in between gives something reasonable in between. The standard library has big differences in levels 1-4, but levels 5-9 having no significant gains - often spending a lot more time than can be justified by the achieved compression.
There are links to all the test data in the [spreadsheet](https://docs.google.com/spreadsheets/d/1nuNE2nPfuINCZJRMt6wFWhKpToF95I47XjSsc-1rbPQ/edit?usp=sharing) in the top left field on each tab.
## Web Content
This test set aims to emulate typical use in a web server. The test-set is 4GB data in 53k files, and is a mixture of (mostly) HTML, JS, CSS.
Since level 1 and 9 are close to being the same code, they are quite close. But looking at the levels in-between the differences are quite big.
Looking at level 6, this package is 88% faster, but will output about 6% more data. For a web server, this means you can serve 88% more data, but have to pay for 6% more bandwidth. You can draw your own conclusions on what would be the most expensive for your case.
## Object files
This test is for typical data files stored on a server. In this case it is a collection of Go precompiled objects. They are very compressible.
The picture is similar to the web content, but with small differences since this is very compressible. Levels 2-3 offer good speed, but is sacrificing quite a bit of compression.
The standard library seems suboptimal on level 3 and 4 - offering both worse compression and speed than level 6 & 7 of this package respectively.
## Highly Compressible File
This is a JSON file with very high redundancy. The reduction starts at 95% on level 1, so in real life terms we are dealing with something like a highly redundant stream of data, etc.
It is definitely visible that we are dealing with specialized content here, so the results are very scattered. This package does not do very well at levels 1-4, but picks up significantly at level 5 and levels 7 and 8 offering great speed for the achieved compression.
So if you know you content is extremely compressible you might want to go slightly higher than the defaults. The standard library has a huge gap between levels 3 and 4 in terms of speed (2.75x slowdown), so it offers little "middle ground".
## Medium-High Compressible
This is a pretty common test corpus: [enwik9](http://mattmahoney.net/dc/textdata.html). It contains the first 10^9 bytes of the English Wikipedia dump on Mar. 3, 2006. This is a very good test of typical text based compression and more data heavy streams.
We see a similar picture here as in "Web Content". On equal levels some compression is sacrificed for more speed. Level 5 seems to be the best trade-off between speed and size, beating stdlib level 3 in both.
## Medium Compressible
I will combine two test sets, one [10GB file set](http://mattmahoney.net/dc/10gb.html) and a VM disk image (~8GB). Both contain different data types and represent a typical backup scenario.
The most notable thing is how quickly the standard library drops to very low compression speeds around level 5-6 without any big gains in compression. Since this type of data is fairly common, this does not seem like good behavior.
## Un-compressible Content
This is mainly a test of how good the algorithms are at detecting un-compressible input. The standard library only offers this feature with very conservative settings at level 1. Obviously there is no reason for the algorithms to try to compress input that cannot be compressed. The only downside is that it might skip some compressible data on false detections.
## Huffman only compression
This compression library adds a special compression level, named `HuffmanOnly`, which allows near linear time compression. This is done by completely disabling matching of previous data, and only reduce the number of bits to represent each character.
This means that often used characters, like 'e' and ' ' (space) in text use the fewest bits to represent, and rare characters like '¤' takes more bits to represent. For more information see [wikipedia](https://en.wikipedia.org/wiki/Huffman_coding) or this nice [video](https://youtu.be/ZdooBTdW5bM).
Since this type of compression has much less variance, the compression speed is mostly unaffected by the input data, and is usually more than *180MB/s* for a single core.
The downside is that the compression ratio is usually considerably worse than even the fastest conventional compression. The compression ratio can never be better than 8:1 (12.5%).
The linear time compression can be used as a "better than nothing" mode, where you cannot risk the encoder to slow down on some content. For comparison, the size of the "Twain" text is *233460 bytes* (+29% vs. level 1) and encode speed is 144MB/s (4.5x level 1). So in this case you trade a 30% size increase for a 4 times speedup.
For more information see my blog post on [Fast Linear Time Compression](http://blog.klauspost.com/constant-time-gzipzip-compression/).
This is implemented on Go 1.7 as "Huffman Only" mode, though not exposed for gzip.
# Other packages

63
vendor/github.com/klauspost/compress/flate/fast_encoder.go generated vendored
View File

@ -6,8 +6,10 @@
package flate
import (
"encoding/binary"
"fmt"
"math/bits"
"github.com/klauspost/compress/internal/le"
)
type fastEnc interface {
@ -58,11 +60,11 @@ const (
)
func load3232(b []byte, i int32) uint32 {
return binary.LittleEndian.Uint32(b[i:])
return le.Load32(b, i)
}
func load6432(b []byte, i int32) uint64 {
return binary.LittleEndian.Uint64(b[i:])
return le.Load64(b, i)
}
type tableEntry struct {
@ -134,8 +136,8 @@ func hashLen(u uint64, length, mls uint8) uint32 {
// matchlen will return the match length between offsets and t in src.
// The maximum length returned is maxMatchLength - 4.
// It is assumed that s > t, that t >=0 and s < len(src).
func (e *fastGen) matchlen(s, t int32, src []byte) int32 {
if debugDecode {
func (e *fastGen) matchlen(s, t int, src []byte) int32 {
if debugDeflate {
if t >= s {
panic(fmt.Sprint("t >=s:", t, s))
}
@ -149,18 +151,34 @@ func (e *fastGen) matchlen(s, t int32, src []byte) int32 {
panic(fmt.Sprint(s, "-", t, "(", s-t, ") > maxMatchLength (", maxMatchOffset, ")"))
}
}
s1 := int(s) + maxMatchLength - 4
if s1 > len(src) {
s1 = len(src)
s1 := min(s+maxMatchLength-4, len(src))
left := s1 - s
n := int32(0)
for left >= 8 {
diff := le.Load64(src, s) ^ le.Load64(src, t)
if diff != 0 {
return n + int32(bits.TrailingZeros64(diff)>>3)
}
s += 8
t += 8
n += 8
left -= 8
}
// Extend the match to be as long as possible.
return int32(matchLen(src[s:s1], src[t:]))
a := src[s:s1]
b := src[t:]
for i := range a {
if a[i] != b[i] {
break
}
n++
}
return n
}
// matchlenLong will return the match length between offsets and t in src.
// It is assumed that s > t, that t >=0 and s < len(src).
func (e *fastGen) matchlenLong(s, t int32, src []byte) int32 {
func (e *fastGen) matchlenLong(s, t int, src []byte) int32 {
if debugDeflate {
if t >= s {
panic(fmt.Sprint("t >=s:", t, s))
@ -176,7 +194,28 @@ func (e *fastGen) matchlenLong(s, t int32, src []byte) int32 {
}
}
// Extend the match to be as long as possible.
return int32(matchLen(src[s:], src[t:]))
left := len(src) - s
n := int32(0)
for left >= 8 {
diff := le.Load64(src, s) ^ le.Load64(src, t)
if diff != 0 {
return n + int32(bits.TrailingZeros64(diff)>>3)
}
s += 8
t += 8
n += 8
left -= 8
}
a := src[s:]
b := src[t:]
for i := range a {
if a[i] != b[i] {
break
}
n++
}
return n
}
// Reset the encoding table.

19
vendor/github.com/klauspost/compress/flate/huffman_bit_writer.go generated vendored
View File

@ -5,10 +5,11 @@
package flate
import (
"encoding/binary"
"fmt"
"io"
"math"
"github.com/klauspost/compress/internal/le"
)
const (
@ -438,7 +439,7 @@ func (w *huffmanBitWriter) writeOutBits() {
n := w.nbytes
// We over-write, but faster...
binary.LittleEndian.PutUint64(w.bytes[n:], bits)
le.Store64(w.bytes[n:], bits)
n += 6
if n >= bufferFlushSize {
@ -854,7 +855,7 @@ func (w *huffmanBitWriter) writeTokens(tokens []token, leCodes, oeCodes []hcode)
bits |= c.code64() << (nbits & 63)
nbits += c.len()
if nbits >= 48 {
binary.LittleEndian.PutUint64(w.bytes[nbytes:], bits)
le.Store64(w.bytes[nbytes:], bits)
//*(*uint64)(unsafe.Pointer(&w.bytes[nbytes])) = bits
bits >>= 48
nbits -= 48
@ -882,7 +883,7 @@ func (w *huffmanBitWriter) writeTokens(tokens []token, leCodes, oeCodes []hcode)
bits |= c.code64() << (nbits & 63)
nbits += c.len()
if nbits >= 48 {
binary.LittleEndian.PutUint64(w.bytes[nbytes:], bits)
le.Store64(w.bytes[nbytes:], bits)
//*(*uint64)(unsafe.Pointer(&w.bytes[nbytes])) = bits
bits >>= 48
nbits -= 48
@ -905,7 +906,7 @@ func (w *huffmanBitWriter) writeTokens(tokens []token, leCodes, oeCodes []hcode)
bits |= uint64(extraLength) << (nbits & 63)
nbits += extraLengthBits
if nbits >= 48 {
binary.LittleEndian.PutUint64(w.bytes[nbytes:], bits)
le.Store64(w.bytes[nbytes:], bits)
//*(*uint64)(unsafe.Pointer(&w.bytes[nbytes])) = bits
bits >>= 48
nbits -= 48
@ -931,7 +932,7 @@ func (w *huffmanBitWriter) writeTokens(tokens []token, leCodes, oeCodes []hcode)
bits |= c.code64() << (nbits & 63)
nbits += c.len()
if nbits >= 48 {
binary.LittleEndian.PutUint64(w.bytes[nbytes:], bits)
le.Store64(w.bytes[nbytes:], bits)
//*(*uint64)(unsafe.Pointer(&w.bytes[nbytes])) = bits
bits >>= 48
nbits -= 48
@ -953,7 +954,7 @@ func (w *huffmanBitWriter) writeTokens(tokens []token, leCodes, oeCodes []hcode)
bits |= uint64((offset-(offsetComb>>8))&matchOffsetOnlyMask) << (nbits & 63)
nbits += uint8(offsetComb)
if nbits >= 48 {
binary.LittleEndian.PutUint64(w.bytes[nbytes:], bits)
le.Store64(w.bytes[nbytes:], bits)
//*(*uint64)(unsafe.Pointer(&w.bytes[nbytes])) = bits
bits >>= 48
nbits -= 48
@ -1107,7 +1108,7 @@ func (w *huffmanBitWriter) writeBlockHuff(eof bool, input []byte, sync bool) {
// We must have at least 48 bits free.
if nbits >= 8 {
n := nbits >> 3
binary.LittleEndian.PutUint64(w.bytes[nbytes:], bits)
le.Store64(w.bytes[nbytes:], bits)
bits >>= (n * 8) & 63
nbits -= n * 8
nbytes += n
@ -1136,7 +1137,7 @@ func (w *huffmanBitWriter) writeBlockHuff(eof bool, input []byte, sync bool) {
// Remaining...
for _, t := range input {
if nbits >= 48 {
binary.LittleEndian.PutUint64(w.bytes[nbytes:], bits)
le.Store64(w.bytes[nbytes:], bits)
//*(*uint64)(unsafe.Pointer(&w.bytes[nbytes])) = bits
bits >>= 48
nbits -= 48

48
vendor/github.com/klauspost/compress/flate/level1.go generated vendored
View File

@ -1,9 +1,9 @@
package flate
import (
"encoding/binary"
"fmt"
"math/bits"
"github.com/klauspost/compress/internal/le"
)
// fastGen maintains the table for matches,
@ -77,6 +77,7 @@ func (e *fastEncL1) Encode(dst *tokens, src []byte) {
nextS := s
var candidate tableEntry
var t int32
for {
nextHash := hashLen(cv, tableBits, hashBytes)
candidate = e.table[nextHash]
@ -88,9 +89,8 @@ func (e *fastEncL1) Encode(dst *tokens, src []byte) {
now := load6432(src, nextS)
e.table[nextHash] = tableEntry{offset: s + e.cur}
nextHash = hashLen(now, tableBits, hashBytes)
offset := s - (candidate.offset - e.cur)
if offset < maxMatchOffset && uint32(cv) == load3232(src, candidate.offset-e.cur) {
t = candidate.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
e.table[nextHash] = tableEntry{offset: nextS + e.cur}
break
}
@ -103,8 +103,8 @@ func (e *fastEncL1) Encode(dst *tokens, src []byte) {
now >>= 8
e.table[nextHash] = tableEntry{offset: s + e.cur}
offset = s - (candidate.offset - e.cur)
if offset < maxMatchOffset && uint32(cv) == load3232(src, candidate.offset-e.cur) {
t = candidate.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
e.table[nextHash] = tableEntry{offset: nextS + e.cur}
break
}
@ -120,36 +120,10 @@ func (e *fastEncL1) Encode(dst *tokens, src []byte) {
// literal bytes prior to s.
// Extend the 4-byte match as long as possible.
t := candidate.offset - e.cur
var l = int32(4)
if false {
l = e.matchlenLong(s+4, t+4, src) + 4
} else {
// inlined:
a := src[s+4:]
b := src[t+4:]
for len(a) >= 8 {
if diff := binary.LittleEndian.Uint64(a) ^ binary.LittleEndian.Uint64(b); diff != 0 {
l += int32(bits.TrailingZeros64(diff) >> 3)
break
}
l += 8
a = a[8:]
b = b[8:]
}
if len(a) < 8 {
b = b[:len(a)]
for i := range a {
if a[i] != b[i] {
break
}
l++
}
}
}
l := e.matchlenLong(int(s+4), int(t+4), src) + 4
// Extend backwards
for t > 0 && s > nextEmit && src[t-1] == src[s-1] {
for t > 0 && s > nextEmit && le.Load8(src, t-1) == le.Load8(src, s-1) {
s--
t--
l++
@ -221,8 +195,8 @@ func (e *fastEncL1) Encode(dst *tokens, src []byte) {
candidate = e.table[currHash]
e.table[currHash] = tableEntry{offset: o + 2}
offset := s - (candidate.offset - e.cur)
if offset > maxMatchOffset || uint32(x) != load3232(src, candidate.offset-e.cur) {
t = candidate.offset - e.cur
if s-t > maxMatchOffset || uint32(x) != load3232(src, t) {
cv = x >> 8
s++
break

2
vendor/github.com/klauspost/compress/flate/level2.go generated vendored
View File

@ -126,7 +126,7 @@ func (e *fastEncL2) Encode(dst *tokens, src []byte) {
// Extend the 4-byte match as long as possible.
t := candidate.offset - e.cur
l := e.matchlenLong(s+4, t+4, src) + 4
l := e.matchlenLong(int(s+4), int(t+4), src) + 4
// Extend backwards
for t > 0 && s > nextEmit && src[t-1] == src[s-1] {

2
vendor/github.com/klauspost/compress/flate/level3.go generated vendored
View File

@ -135,7 +135,7 @@ func (e *fastEncL3) Encode(dst *tokens, src []byte) {
// Extend the 4-byte match as long as possible.
//
t := candidate.offset - e.cur
l := e.matchlenLong(s+4, t+4, src) + 4
l := e.matchlenLong(int(s+4), int(t+4), src) + 4
// Extend backwards
for t > 0 && s > nextEmit && src[t-1] == src[s-1] {

10
vendor/github.com/klauspost/compress/flate/level4.go generated vendored
View File

@ -98,19 +98,19 @@ func (e *fastEncL4) Encode(dst *tokens, src []byte) {
e.bTable[nextHashL] = entry
t = lCandidate.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, lCandidate.offset-e.cur) {
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
// We got a long match. Use that.
break
}
t = sCandidate.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, sCandidate.offset-e.cur) {
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
// Found a 4 match...
lCandidate = e.bTable[hash7(next, tableBits)]
// If the next long is a candidate, check if we should use that instead...
lOff := nextS - (lCandidate.offset - e.cur)
if lOff < maxMatchOffset && load3232(src, lCandidate.offset-e.cur) == uint32(next) {
lOff := lCandidate.offset - e.cur
if nextS-lOff < maxMatchOffset && load3232(src, lOff) == uint32(next) {
l1, l2 := matchLen(src[s+4:], src[t+4:]), matchLen(src[nextS+4:], src[nextS-lOff+4:])
if l2 > l1 {
s = nextS
@ -127,7 +127,7 @@ func (e *fastEncL4) Encode(dst *tokens, src []byte) {
// them as literal bytes.
// Extend the 4-byte match as long as possible.
l := e.matchlenLong(s+4, t+4, src) + 4
l := e.matchlenLong(int(s+4), int(t+4), src) + 4
// Extend backwards
for t > 0 && s > nextEmit && src[t-1] == src[s-1] {

40
vendor/github.com/klauspost/compress/flate/level5.go generated vendored
View File

@ -111,16 +111,16 @@ func (e *fastEncL5) Encode(dst *tokens, src []byte) {
t = lCandidate.Cur.offset - e.cur
if s-t < maxMatchOffset {
if uint32(cv) == load3232(src, lCandidate.Cur.offset-e.cur) {
if uint32(cv) == load3232(src, t) {
// Store the next match
e.table[nextHashS] = tableEntry{offset: nextS + e.cur}
eLong := &e.bTable[nextHashL]
eLong.Cur, eLong.Prev = tableEntry{offset: nextS + e.cur}, eLong.Cur
t2 := lCandidate.Prev.offset - e.cur
if s-t2 < maxMatchOffset && uint32(cv) == load3232(src, lCandidate.Prev.offset-e.cur) {
l = e.matchlen(s+4, t+4, src) + 4
ml1 := e.matchlen(s+4, t2+4, src) + 4
if s-t2 < maxMatchOffset && uint32(cv) == load3232(src, t2) {
l = e.matchlen(int(s+4), int(t+4), src) + 4
ml1 := e.matchlen(int(s+4), int(t2+4), src) + 4
if ml1 > l {
t = t2
l = ml1
@ -130,7 +130,7 @@ func (e *fastEncL5) Encode(dst *tokens, src []byte) {
break
}
t = lCandidate.Prev.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, lCandidate.Prev.offset-e.cur) {
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
// Store the next match
e.table[nextHashS] = tableEntry{offset: nextS + e.cur}
eLong := &e.bTable[nextHashL]
@ -140,9 +140,9 @@ func (e *fastEncL5) Encode(dst *tokens, src []byte) {
}
t = sCandidate.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, sCandidate.offset-e.cur) {
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
// Found a 4 match...
l = e.matchlen(s+4, t+4, src) + 4
l = e.matchlen(int(s+4), int(t+4), src) + 4
lCandidate = e.bTable[nextHashL]
// Store the next match
@ -153,8 +153,8 @@ func (e *fastEncL5) Encode(dst *tokens, src []byte) {
// If the next long is a candidate, use that...
t2 := lCandidate.Cur.offset - e.cur
if nextS-t2 < maxMatchOffset {
if load3232(src, lCandidate.Cur.offset-e.cur) == uint32(next) {
ml := e.matchlen(nextS+4, t2+4, src) + 4
if load3232(src, t2) == uint32(next) {
ml := e.matchlen(int(nextS+4), int(t2+4), src) + 4
if ml > l {
t = t2
s = nextS
@ -164,8 +164,8 @@ func (e *fastEncL5) Encode(dst *tokens, src []byte) {
}
// If the previous long is a candidate, use that...
t2 = lCandidate.Prev.offset - e.cur
if nextS-t2 < maxMatchOffset && load3232(src, lCandidate.Prev.offset-e.cur) == uint32(next) {
ml := e.matchlen(nextS+4, t2+4, src) + 4
if nextS-t2 < maxMatchOffset && load3232(src, t2) == uint32(next) {
ml := e.matchlen(int(nextS+4), int(t2+4), src) + 4
if ml > l {
t = t2
s = nextS
@ -185,9 +185,9 @@ func (e *fastEncL5) Encode(dst *tokens, src []byte) {
if l == 0 {
// Extend the 4-byte match as long as possible.
l = e.matchlenLong(s+4, t+4, src) + 4
l = e.matchlenLong(int(s+4), int(t+4), src) + 4
} else if l == maxMatchLength {
l += e.matchlenLong(s+l, t+l, src)
l += e.matchlenLong(int(s+l), int(t+l), src)
}
// Try to locate a better match by checking the end of best match...
@ -203,7 +203,7 @@ func (e *fastEncL5) Encode(dst *tokens, src []byte) {
s2 := s + skipBeginning
off := s2 - t2
if t2 >= 0 && off < maxMatchOffset && off > 0 {
if l2 := e.matchlenLong(s2, t2, src); l2 > l {
if l2 := e.matchlenLong(int(s2), int(t2), src); l2 > l {
t = t2
l = l2
s = s2
@ -423,14 +423,14 @@ func (e *fastEncL5Window) Encode(dst *tokens, src []byte) {
t = lCandidate.Cur.offset - e.cur
if s-t < maxMatchOffset {
if uint32(cv) == load3232(src, lCandidate.Cur.offset-e.cur) {
if uint32(cv) == load3232(src, t) {
// Store the next match
e.table[nextHashS] = tableEntry{offset: nextS + e.cur}
eLong := &e.bTable[nextHashL]
eLong.Cur, eLong.Prev = tableEntry{offset: nextS + e.cur}, eLong.Cur
t2 := lCandidate.Prev.offset - e.cur
if s-t2 < maxMatchOffset && uint32(cv) == load3232(src, lCandidate.Prev.offset-e.cur) {
if s-t2 < maxMatchOffset && uint32(cv) == load3232(src, t2) {
l = e.matchlen(s+4, t+4, src) + 4
ml1 := e.matchlen(s+4, t2+4, src) + 4
if ml1 > l {
@ -442,7 +442,7 @@ func (e *fastEncL5Window) Encode(dst *tokens, src []byte) {
break
}
t = lCandidate.Prev.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, lCandidate.Prev.offset-e.cur) {
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
// Store the next match
e.table[nextHashS] = tableEntry{offset: nextS + e.cur}
eLong := &e.bTable[nextHashL]
@ -452,7 +452,7 @@ func (e *fastEncL5Window) Encode(dst *tokens, src []byte) {
}
t = sCandidate.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, sCandidate.offset-e.cur) {
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
// Found a 4 match...
l = e.matchlen(s+4, t+4, src) + 4
lCandidate = e.bTable[nextHashL]
@ -465,7 +465,7 @@ func (e *fastEncL5Window) Encode(dst *tokens, src []byte) {
// If the next long is a candidate, use that...
t2 := lCandidate.Cur.offset - e.cur
if nextS-t2 < maxMatchOffset {
if load3232(src, lCandidate.Cur.offset-e.cur) == uint32(next) {
if load3232(src, t2) == uint32(next) {
ml := e.matchlen(nextS+4, t2+4, src) + 4
if ml > l {
t = t2
@ -476,7 +476,7 @@ func (e *fastEncL5Window) Encode(dst *tokens, src []byte) {
}
// If the previous long is a candidate, use that...
t2 = lCandidate.Prev.offset - e.cur
if nextS-t2 < maxMatchOffset && load3232(src, lCandidate.Prev.offset-e.cur) == uint32(next) {
if nextS-t2 < maxMatchOffset && load3232(src, t2) == uint32(next) {
ml := e.matchlen(nextS+4, t2+4, src) + 4
if ml > l {
t = t2

32
vendor/github.com/klauspost/compress/flate/level6.go generated vendored
View File

@ -113,7 +113,7 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
t = lCandidate.Cur.offset - e.cur
if s-t < maxMatchOffset {
if uint32(cv) == load3232(src, lCandidate.Cur.offset-e.cur) {
if uint32(cv) == load3232(src, t) {
// Long candidate matches at least 4 bytes.
// Store the next match
@ -123,9 +123,9 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
// Check the previous long candidate as well.
t2 := lCandidate.Prev.offset - e.cur
if s-t2 < maxMatchOffset && uint32(cv) == load3232(src, lCandidate.Prev.offset-e.cur) {
l = e.matchlen(s+4, t+4, src) + 4
ml1 := e.matchlen(s+4, t2+4, src) + 4
if s-t2 < maxMatchOffset && uint32(cv) == load3232(src, t2) {
l = e.matchlen(int(s+4), int(t+4), src) + 4
ml1 := e.matchlen(int(s+4), int(t2+4), src) + 4
if ml1 > l {
t = t2
l = ml1
@ -136,7 +136,7 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
}
// Current value did not match, but check if previous long value does.
t = lCandidate.Prev.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, lCandidate.Prev.offset-e.cur) {
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
// Store the next match
e.table[nextHashS] = tableEntry{offset: nextS + e.cur}
eLong := &e.bTable[nextHashL]
@ -146,9 +146,9 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
}
t = sCandidate.offset - e.cur
if s-t < maxMatchOffset && uint32(cv) == load3232(src, sCandidate.offset-e.cur) {
if s-t < maxMatchOffset && uint32(cv) == load3232(src, t) {
// Found a 4 match...
l = e.matchlen(s+4, t+4, src) + 4
l = e.matchlen(int(s+4), int(t+4), src) + 4
// Look up next long candidate (at nextS)
lCandidate = e.bTable[nextHashL]
@ -162,7 +162,7 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
const repOff = 1
t2 := s - repeat + repOff
if load3232(src, t2) == uint32(cv>>(8*repOff)) {
ml := e.matchlen(s+4+repOff, t2+4, src) + 4
ml := e.matchlen(int(s+4+repOff), int(t2+4), src) + 4
if ml > l {
t = t2
l = ml
@ -175,8 +175,8 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
// If the next long is a candidate, use that...
t2 = lCandidate.Cur.offset - e.cur
if nextS-t2 < maxMatchOffset {
if load3232(src, lCandidate.Cur.offset-e.cur) == uint32(next) {
ml := e.matchlen(nextS+4, t2+4, src) + 4
if load3232(src, t2) == uint32(next) {
ml := e.matchlen(int(nextS+4), int(t2+4), src) + 4
if ml > l {
t = t2
s = nextS
@ -186,8 +186,8 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
}
// If the previous long is a candidate, use that...
t2 = lCandidate.Prev.offset - e.cur
if nextS-t2 < maxMatchOffset && load3232(src, lCandidate.Prev.offset-e.cur) == uint32(next) {
ml := e.matchlen(nextS+4, t2+4, src) + 4
if nextS-t2 < maxMatchOffset && load3232(src, t2) == uint32(next) {
ml := e.matchlen(int(nextS+4), int(t2+4), src) + 4
if ml > l {
t = t2
s = nextS
@ -207,9 +207,9 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
// Extend the 4-byte match as long as possible.
if l == 0 {
l = e.matchlenLong(s+4, t+4, src) + 4
l = e.matchlenLong(int(s+4), int(t+4), src) + 4
} else if l == maxMatchLength {
l += e.matchlenLong(s+l, t+l, src)
l += e.matchlenLong(int(s+l), int(t+l), src)
}
// Try to locate a better match by checking the end-of-match...
@ -227,7 +227,7 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
off := s2 - t2
if off < maxMatchOffset {
if off > 0 && t2 >= 0 {
if l2 := e.matchlenLong(s2, t2, src); l2 > l {
if l2 := e.matchlenLong(int(s2), int(t2), src); l2 > l {
t = t2
l = l2
s = s2
@ -237,7 +237,7 @@ func (e *fastEncL6) Encode(dst *tokens, src []byte) {
t2 = eLong.Prev.offset - e.cur - l + skipBeginning
off := s2 - t2
if off > 0 && off < maxMatchOffset && t2 >= 0 {
if l2 := e.matchlenLong(s2, t2, src); l2 > l {
if l2 := e.matchlenLong(int(s2), int(t2), src); l2 > l {
t = t2
l = l2
s = s2

16
vendor/github.com/klauspost/compress/flate/matchlen_amd64.go generated vendored
View File

@ -1,16 +0,0 @@
//go:build amd64 && !appengine && !noasm && gc
// +build amd64,!appengine,!noasm,gc
// Copyright 2019+ Klaus Post. All rights reserved.
// License information can be found in the LICENSE file.
package flate
// matchLen returns how many bytes match in a and b
//
// It assumes that:
//
// len(a) <= len(b) and len(a) > 0
//
//go:noescape
func matchLen(a []byte, b []byte) int

66
vendor/github.com/klauspost/compress/flate/matchlen_amd64.s generated vendored
View File

@ -1,66 +0,0 @@
// Copied from S2 implementation.
//go:build !appengine && !noasm && gc && !noasm
#include "textflag.h"
// func matchLen(a []byte, b []byte) int
TEXT ·matchLen(SB), NOSPLIT, $0-56
MOVQ a_base+0(FP), AX
MOVQ b_base+24(FP), CX
MOVQ a_len+8(FP), DX
// matchLen
XORL SI, SI
CMPL DX, $0x08
JB matchlen_match4_standalone
matchlen_loopback_standalone:
MOVQ (AX)(SI*1), BX
XORQ (CX)(SI*1), BX
JZ matchlen_loop_standalone
#ifdef GOAMD64_v3
TZCNTQ BX, BX
#else
BSFQ BX, BX
#endif
SHRL $0x03, BX
LEAL (SI)(BX*1), SI
JMP gen_match_len_end
matchlen_loop_standalone:
LEAL -8(DX), DX
LEAL 8(SI), SI
CMPL DX, $0x08
JAE matchlen_loopback_standalone
matchlen_match4_standalone:
CMPL DX, $0x04
JB matchlen_match2_standalone
MOVL (AX)(SI*1), BX
CMPL (CX)(SI*1), BX
JNE matchlen_match2_standalone
LEAL -4(DX), DX
LEAL 4(SI), SI
matchlen_match2_standalone:
CMPL DX, $0x02
JB matchlen_match1_standalone
MOVW (AX)(SI*1), BX
CMPW (CX)(SI*1), BX
JNE matchlen_match1_standalone
LEAL -2(DX), DX
LEAL 2(SI), SI
matchlen_match1_standalone:
CMPL DX, $0x01
JB gen_match_len_end
MOVB (AX)(SI*1), BL
CMPB (CX)(SI*1), BL
JNE gen_match_len_end
INCL SI
gen_match_len_end:
MOVQ SI, ret+48(FP)
RET

15
vendor/github.com/klauspost/compress/flate/matchlen_generic.go generated vendored
View File

@ -1,27 +1,29 @@
//go:build !amd64 || appengine || !gc || noasm
// +build !amd64 appengine !gc noasm
// Copyright 2019+ Klaus Post. All rights reserved.
// License information can be found in the LICENSE file.
package flate
import (
"encoding/binary"
"math/bits"
"github.com/klauspost/compress/internal/le"
)
// matchLen returns the maximum common prefix length of a and b.
// a must be the shortest of the two.
func matchLen(a, b []byte) (n int) {
for ; len(a) >= 8 && len(b) >= 8; a, b = a[8:], b[8:] {
diff := binary.LittleEndian.Uint64(a) ^ binary.LittleEndian.Uint64(b)
left := len(a)
for left >= 8 {
diff := le.Load64(a, n) ^ le.Load64(b, n)
if diff != 0 {
return n + bits.TrailingZeros64(diff)>>3
}
n += 8
left -= 8
}
a = a[n:]
b = b[n:]
for i := range a {
if a[i] != b[i] {
break
@ -29,5 +31,4 @@ func matchLen(a, b []byte) (n int) {
n++
}
return n
}

13
vendor/github.com/klauspost/compress/flate/stateless.go generated vendored
View File

@ -4,6 +4,8 @@ import (
"io"
"math"
"sync"
"github.com/klauspost/compress/internal/le"
)
const (
@ -152,18 +154,11 @@ func hashSL(u uint32) uint32 {
}
func load3216(b []byte, i int16) uint32 {
// Help the compiler eliminate bounds checks on the read so it can be done in a single read.
b = b[i:]
b = b[:4]
return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
return le.Load32(b, i)
}
func load6416(b []byte, i int16) uint64 {
// Help the compiler eliminate bounds checks on the read so it can be done in a single read.
b = b[i:]
b = b[:8]
return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
return le.Load64(b, i)
}
func statelessEnc(dst *tokens, src []byte, startAt int16) {

25
vendor/github.com/klauspost/compress/huff0/bitreader.go generated vendored
View File

@ -6,10 +6,11 @@
package huff0
import (
"encoding/binary"
"errors"
"fmt"
"io"
"github.com/klauspost/compress/internal/le"
)
// bitReader reads a bitstream in reverse.
@ -46,7 +47,7 @@ func (b *bitReaderBytes) init(in []byte) error {
return nil
}
// peekBitsFast requires that at least one bit is requested every time.
// peekByteFast requires that at least one byte is requested every time.
// There are no checks if the buffer is filled.
func (b *bitReaderBytes) peekByteFast() uint8 {
got := uint8(b.value >> 56)
@ -66,8 +67,7 @@ func (b *bitReaderBytes) fillFast() {
}
// 2 bounds checks.
v := b.in[b.off-4 : b.off]
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
low := le.Load32(b.in, b.off-4)
b.value |= uint64(low) << (b.bitsRead - 32)
b.bitsRead -= 32
b.off -= 4
@ -76,7 +76,7 @@ func (b *bitReaderBytes) fillFast() {
// fillFastStart() assumes the bitReaderBytes is empty and there is at least 8 bytes to read.
func (b *bitReaderBytes) fillFastStart() {
// Do single re-slice to avoid bounds checks.
b.value = binary.LittleEndian.Uint64(b.in[b.off-8:])
b.value = le.Load64(b.in, b.off-8)
b.bitsRead = 0
b.off -= 8
}
@ -86,9 +86,8 @@ func (b *bitReaderBytes) fill() {
if b.bitsRead < 32 {
return
}
if b.off > 4 {
v := b.in[b.off-4 : b.off]
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
if b.off >= 4 {
low := le.Load32(b.in, b.off-4)
b.value |= uint64(low) << (b.bitsRead - 32)
b.bitsRead -= 32
b.off -= 4
@ -175,9 +174,7 @@ func (b *bitReaderShifted) fillFast() {
return
}
// 2 bounds checks.
v := b.in[b.off-4 : b.off]
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
low := le.Load32(b.in, b.off-4)
b.value |= uint64(low) << ((b.bitsRead - 32) & 63)
b.bitsRead -= 32
b.off -= 4
@ -185,8 +182,7 @@ func (b *bitReaderShifted) fillFast() {
// fillFastStart() assumes the bitReaderShifted is empty and there is at least 8 bytes to read.
func (b *bitReaderShifted) fillFastStart() {
// Do single re-slice to avoid bounds checks.
b.value = binary.LittleEndian.Uint64(b.in[b.off-8:])
b.value = le.Load64(b.in, b.off-8)
b.bitsRead = 0
b.off -= 8
}
@ -197,8 +193,7 @@ func (b *bitReaderShifted) fill() {
return
}
if b.off > 4 {
v := b.in[b.off-4 : b.off]
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
low := le.Load32(b.in, b.off-4)
b.value |= uint64(low) << ((b.bitsRead - 32) & 63)
b.bitsRead -= 32
b.off -= 4

5
vendor/github.com/klauspost/compress/internal/le/le.go generated vendored Normal file
View File

@ -0,0 +1,5 @@
package le
type Indexer interface {
int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64
}

42
vendor/github.com/klauspost/compress/internal/le/unsafe_disabled.go generated vendored Normal file
View File

@ -0,0 +1,42 @@
//go:build !(amd64 || arm64 || ppc64le || riscv64) || nounsafe || purego || appengine
package le
import (
"encoding/binary"
)
// Load8 will load from b at index i.
func Load8[I Indexer](b []byte, i I) byte {
return b[i]
}
// Load16 will load from b at index i.
func Load16[I Indexer](b []byte, i I) uint16 {
return binary.LittleEndian.Uint16(b[i:])
}
// Load32 will load from b at index i.
func Load32[I Indexer](b []byte, i I) uint32 {
return binary.LittleEndian.Uint32(b[i:])
}
// Load64 will load from b at index i.
func Load64[I Indexer](b []byte, i I) uint64 {
return binary.LittleEndian.Uint64(b[i:])
}
// Store16 will store v at b.
func Store16(b []byte, v uint16) {
binary.LittleEndian.PutUint16(b, v)
}
// Store32 will store v at b.
func Store32(b []byte, v uint32) {
binary.LittleEndian.PutUint32(b, v)
}
// Store64 will store v at b.
func Store64(b []byte, v uint64) {
binary.LittleEndian.PutUint64(b, v)
}

55
vendor/github.com/klauspost/compress/internal/le/unsafe_enabled.go generated vendored Normal file
View File

@ -0,0 +1,55 @@
// We enable 64 bit LE platforms:
//go:build (amd64 || arm64 || ppc64le || riscv64) && !nounsafe && !purego && !appengine
package le
import (
"unsafe"
)
// Load8 will load from b at index i.
func Load8[I Indexer](b []byte, i I) byte {
//return binary.LittleEndian.Uint16(b[i:])
//return *(*uint16)(unsafe.Pointer(&b[i]))
return *(*byte)(unsafe.Add(unsafe.Pointer(unsafe.SliceData(b)), i))
}
// Load16 will load from b at index i.
func Load16[I Indexer](b []byte, i I) uint16 {
//return binary.LittleEndian.Uint16(b[i:])
//return *(*uint16)(unsafe.Pointer(&b[i]))
return *(*uint16)(unsafe.Add(unsafe.Pointer(unsafe.SliceData(b)), i))
}
// Load32 will load from b at index i.
func Load32[I Indexer](b []byte, i I) uint32 {
//return binary.LittleEndian.Uint32(b[i:])
//return *(*uint32)(unsafe.Pointer(&b[i]))
return *(*uint32)(unsafe.Add(unsafe.Pointer(unsafe.SliceData(b)), i))
}
// Load64 will load from b at index i.
func Load64[I Indexer](b []byte, i I) uint64 {
//return binary.LittleEndian.Uint64(b[i:])
//return *(*uint64)(unsafe.Pointer(&b[i]))
return *(*uint64)(unsafe.Add(unsafe.Pointer(unsafe.SliceData(b)), i))
}
// Store16 will store v at b.
func Store16(b []byte, v uint16) {
//binary.LittleEndian.PutUint16(b, v)
*(*uint16)(unsafe.Pointer(unsafe.SliceData(b))) = v
}
// Store32 will store v at b.
func Store32(b []byte, v uint32) {
//binary.LittleEndian.PutUint32(b, v)
*(*uint32)(unsafe.Pointer(unsafe.SliceData(b))) = v
}
// Store64 will store v at b.
func Store64(b []byte, v uint64) {
//binary.LittleEndian.PutUint64(b, v)
*(*uint64)(unsafe.Pointer(unsafe.SliceData(b))) = v
}

3
vendor/github.com/klauspost/compress/s2sx.mod generated vendored
View File

@ -1,4 +1,3 @@
module github.com/klauspost/compress
go 1.19
go 1.22

2
vendor/github.com/klauspost/compress/zstd/README.md generated vendored
View File

@ -6,7 +6,7 @@ A high performance compression algorithm is implemented. For now focused on spee
This package provides [compression](#Compressor) to and [decompression](#Decompressor) of Zstandard content.
This package is pure Go and without use of "unsafe".
This package is pure Go. Use `noasm` and `nounsafe` to disable relevant features.
The `zstd` package is provided as open source software using a Go standard license.

37
vendor/github.com/klauspost/compress/zstd/bitreader.go generated vendored
View File

@ -5,11 +5,12 @@
package zstd
import (
"encoding/binary"
"errors"
"fmt"
"io"
"math/bits"
"github.com/klauspost/compress/internal/le"
)
// bitReader reads a bitstream in reverse.
@ -18,6 +19,7 @@ import (
type bitReader struct {
in []byte
value uint64 // Maybe use [16]byte, but shifting is awkward.
cursor int // offset where next read should end
bitsRead uint8
}
@ -32,6 +34,7 @@ func (b *bitReader) init(in []byte) error {
if v == 0 {
return errors.New("corrupt stream, did not find end of stream")
}
b.cursor = len(in)
b.bitsRead = 64
b.value = 0
if len(in) >= 8 {
@ -67,18 +70,15 @@ func (b *bitReader) fillFast() {
if b.bitsRead < 32 {
return
}
v := b.in[len(b.in)-4:]
b.in = b.in[:len(b.in)-4]
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
b.value = (b.value << 32) | uint64(low)
b.cursor -= 4
b.value = (b.value << 32) | uint64(le.Load32(b.in, b.cursor))
b.bitsRead -= 32
}
// fillFastStart() assumes the bitreader is empty and there is at least 8 bytes to read.
func (b *bitReader) fillFastStart() {
v := b.in[len(b.in)-8:]
b.in = b.in[:len(b.in)-8]
b.value = binary.LittleEndian.Uint64(v)
b.cursor -= 8
b.value = le.Load64(b.in, b.cursor)
b.bitsRead = 0
}
@ -87,25 +87,23 @@ func (b *bitReader) fill() {
if b.bitsRead < 32 {
return
}
if len(b.in) >= 4 {
v := b.in[len(b.in)-4:]
b.in = b.in[:len(b.in)-4]
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
b.value = (b.value << 32) | uint64(low)
if b.cursor >= 4 {
b.cursor -= 4
b.value = (b.value << 32) | uint64(le.Load32(b.in, b.cursor))
b.bitsRead -= 32
return
}
b.bitsRead -= uint8(8 * len(b.in))
for len(b.in) > 0 {
b.value = (b.value << 8) | uint64(b.in[len(b.in)-1])
b.in = b.in[:len(b.in)-1]
b.bitsRead -= uint8(8 * b.cursor)
for b.cursor > 0 {
b.cursor -= 1
b.value = (b.value << 8) | uint64(b.in[b.cursor])
}
}
// finished returns true if all bits have been read from the bit stream.
func (b *bitReader) finished() bool {
return len(b.in) == 0 && b.bitsRead >= 64
return b.cursor == 0 && b.bitsRead >= 64
}
// overread returns true if more bits have been requested than is on the stream.
@ -115,13 +113,14 @@ func (b *bitReader) overread() bool {
// remain returns the number of bits remaining.
func (b *bitReader) remain() uint {
return 8*uint(len(b.in)) + 64 - uint(b.bitsRead)
return 8*uint(b.cursor) + 64 - uint(b.bitsRead)
}
// close the bitstream and returns an error if out-of-buffer reads occurred.
func (b *bitReader) close() error {
// Release reference.
b.in = nil
b.cursor = 0
if !b.finished() {
return fmt.Errorf("%d extra bits on block, should be 0", b.remain())
}

19
vendor/github.com/klauspost/compress/zstd/blockdec.go generated vendored
View File

@ -5,14 +5,10 @@
package zstd
import (
"bytes"
"encoding/binary"
"errors"
"fmt"
"hash/crc32"
"io"
"os"
"path/filepath"
"sync"
"github.com/klauspost/compress/huff0"
@ -648,21 +644,6 @@ func (b *blockDec) prepareSequences(in []byte, hist *history) (err error) {
println("initializing sequences:", err)
return err
}
// Extract blocks...
if false && hist.dict == nil {
fatalErr := func(err error) {
if err != nil {
panic(err)
}
}
fn := fmt.Sprintf("n-%d-lits-%d-prev-%d-%d-%d-win-%d.blk", hist.decoders.nSeqs, len(hist.decoders.literals), hist.recentOffsets[0], hist.recentOffsets[1], hist.recentOffsets[2], hist.windowSize)
var buf bytes.Buffer
fatalErr(binary.Write(&buf, binary.LittleEndian, hist.decoders.litLengths.fse))
fatalErr(binary.Write(&buf, binary.LittleEndian, hist.decoders.matchLengths.fse))
fatalErr(binary.Write(&buf, binary.LittleEndian, hist.decoders.offsets.fse))
buf.Write(in)
os.WriteFile(filepath.Join("testdata", "seqs", fn), buf.Bytes(), os.ModePerm)
}
return nil
}

27
vendor/github.com/klauspost/compress/zstd/blockenc.go generated vendored
View File

@ -9,6 +9,7 @@ import (
"fmt"
"math"
"math/bits"
"slices"
"github.com/klauspost/compress/huff0"
)
@ -457,16 +458,7 @@ func fuzzFseEncoder(data []byte) int {
// All 0
return 0
}
maxCount := func(a []uint32) int {
var max uint32
for _, v := range a {
if v > max {
max = v
}
}
return int(max)
}
cnt := maxCount(hist[:maxSym])
cnt := int(slices.Max(hist[:maxSym]))
if cnt == len(data) {
// RLE
return 0
@ -884,15 +876,6 @@ func (b *blockEnc) genCodes() {
}
}
}
maxCount := func(a []uint32) int {
var max uint32
for _, v := range a {
if v > max {
max = v
}
}
return int(max)
}
if debugAsserts && mlMax > maxMatchLengthSymbol {
panic(fmt.Errorf("mlMax > maxMatchLengthSymbol (%d)", mlMax))
}
@ -903,7 +886,7 @@ func (b *blockEnc) genCodes() {
panic(fmt.Errorf("llMax > maxLiteralLengthSymbol (%d)", llMax))
}
b.coders.mlEnc.HistogramFinished(mlMax, maxCount(mlH[:mlMax+1]))
b.coders.ofEnc.HistogramFinished(ofMax, maxCount(ofH[:ofMax+1]))
b.coders.llEnc.HistogramFinished(llMax, maxCount(llH[:llMax+1]))
b.coders.mlEnc.HistogramFinished(mlMax, int(slices.Max(mlH[:mlMax+1])))
b.coders.ofEnc.HistogramFinished(ofMax, int(slices.Max(ofH[:ofMax+1])))
b.coders.llEnc.HistogramFinished(llMax, int(slices.Max(llH[:llMax+1])))
}

3
vendor/github.com/klauspost/compress/zstd/decoder.go generated vendored
View File

@ -123,7 +123,7 @@ func NewReader(r io.Reader, opts ...DOption) (*Decoder, error) {
}
// Read bytes from the decompressed stream into p.
// Returns the number of bytes written and any error that occurred.
// Returns the number of bytes read and any error that occurred.
// When the stream is done, io.EOF will be returned.
func (d *Decoder) Read(p []byte) (int, error) {
var n int
@ -323,6 +323,7 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
frame.bBuf = nil
if frame.history.decoders.br != nil {
frame.history.decoders.br.in = nil
frame.history.decoders.br.cursor = 0
}
d.decoders <- block
}()

2
vendor/github.com/klauspost/compress/zstd/enc_base.go generated vendored
View File

@ -116,7 +116,7 @@ func (e *fastBase) matchlen(s, t int32, src []byte) int32 {
panic(err)
}
if t < 0 {
err := fmt.Sprintf("s (%d) < 0", s)
err := fmt.Sprintf("t (%d) < 0", t)
panic(err)
}
if s-t > e.maxMatchOff {

11
vendor/github.com/klauspost/compress/zstd/matchlen_generic.go generated vendored
View File

@ -7,20 +7,25 @@
package zstd
import (
"encoding/binary"
"math/bits"
"github.com/klauspost/compress/internal/le"
)
// matchLen returns the maximum common prefix length of a and b.
// a must be the shortest of the two.
func matchLen(a, b []byte) (n int) {
for ; len(a) >= 8 && len(b) >= 8; a, b = a[8:], b[8:] {
diff := binary.LittleEndian.Uint64(a) ^ binary.LittleEndian.Uint64(b)
left := len(a)
for left >= 8 {
diff := le.Load64(a, n) ^ le.Load64(b, n)
if diff != 0 {
return n + bits.TrailingZeros64(diff)>>3
}
n += 8
left -= 8
}
a = a[n:]
b = b[n:]
for i := range a {
if a[i] != b[i] {

2
vendor/github.com/klauspost/compress/zstd/seqdec.go generated vendored
View File

@ -245,7 +245,7 @@ func (s *sequenceDecs) decodeSync(hist []byte) error {
return io.ErrUnexpectedEOF
}
var ll, mo, ml int
if len(br.in) > 4+((maxOffsetBits+16+16)>>3) {
if br.cursor > 4+((maxOffsetBits+16+16)>>3) {
// inlined function:
// ll, mo, ml = s.nextFast(br, llState, mlState, ofState)

64
vendor/github.com/klauspost/compress/zstd/seqdec_amd64.s generated vendored
View File

@ -7,9 +7,9 @@
TEXT ·sequenceDecs_decode_amd64(SB), $8-32
MOVQ br+8(FP), CX
MOVQ 24(CX), DX
MOVBQZX 32(CX), BX
MOVBQZX 40(CX), BX
MOVQ (CX), AX
MOVQ 8(CX), SI
MOVQ 32(CX), SI
ADDQ SI, AX
MOVQ AX, (SP)
MOVQ ctx+16(FP), AX
@ -299,8 +299,8 @@ sequenceDecs_decode_amd64_match_len_ofs_ok:
MOVQ R13, 160(AX)
MOVQ br+8(FP), AX
MOVQ DX, 24(AX)
MOVB BL, 32(AX)
MOVQ SI, 8(AX)
MOVB BL, 40(AX)
MOVQ SI, 32(AX)
// Return success
MOVQ $0x00000000, ret+24(FP)
@ -335,9 +335,9 @@ error_overread:
TEXT ·sequenceDecs_decode_56_amd64(SB), $8-32
MOVQ br+8(FP), CX
MOVQ 24(CX), DX
MOVBQZX 32(CX), BX
MOVBQZX 40(CX), BX
MOVQ (CX), AX
MOVQ 8(CX), SI
MOVQ 32(CX), SI
ADDQ SI, AX
MOVQ AX, (SP)
MOVQ ctx+16(FP), AX
@ -598,8 +598,8 @@ sequenceDecs_decode_56_amd64_match_len_ofs_ok:
MOVQ R13, 160(AX)
MOVQ br+8(FP), AX
MOVQ DX, 24(AX)
MOVB BL, 32(AX)
MOVQ SI, 8(AX)
MOVB BL, 40(AX)
MOVQ SI, 32(AX)
// Return success
MOVQ $0x00000000, ret+24(FP)
@ -634,9 +634,9 @@ error_overread:
TEXT ·sequenceDecs_decode_bmi2(SB), $8-32
MOVQ br+8(FP), BX
MOVQ 24(BX), AX
MOVBQZX 32(BX), DX
MOVBQZX 40(BX), DX
MOVQ (BX), CX
MOVQ 8(BX), BX
MOVQ 32(BX), BX
ADDQ BX, CX
MOVQ CX, (SP)
MOVQ ctx+16(FP), CX
@ -884,8 +884,8 @@ sequenceDecs_decode_bmi2_match_len_ofs_ok:
MOVQ R12, 160(CX)
MOVQ br+8(FP), CX
MOVQ AX, 24(CX)
MOVB DL, 32(CX)
MOVQ BX, 8(CX)
MOVB DL, 40(CX)
MOVQ BX, 32(CX)
// Return success
MOVQ $0x00000000, ret+24(FP)
@ -920,9 +920,9 @@ error_overread:
TEXT ·sequenceDecs_decode_56_bmi2(SB), $8-32
MOVQ br+8(FP), BX
MOVQ 24(BX), AX
MOVBQZX 32(BX), DX
MOVBQZX 40(BX), DX
MOVQ (BX), CX
MOVQ 8(BX), BX
MOVQ 32(BX), BX
ADDQ BX, CX
MOVQ CX, (SP)
MOVQ ctx+16(FP), CX
@ -1141,8 +1141,8 @@ sequenceDecs_decode_56_bmi2_match_len_ofs_ok:
MOVQ R12, 160(CX)
MOVQ br+8(FP), CX
MOVQ AX, 24(CX)
MOVB DL, 32(CX)
MOVQ BX, 8(CX)
MOVB DL, 40(CX)
MOVQ BX, 32(CX)
// Return success
MOVQ $0x00000000, ret+24(FP)
@ -1787,9 +1787,9 @@ empty_seqs:
TEXT ·sequenceDecs_decodeSync_amd64(SB), $64-32
MOVQ br+8(FP), CX
MOVQ 24(CX), DX
MOVBQZX 32(CX), BX
MOVBQZX 40(CX), BX
MOVQ (CX), AX
MOVQ 8(CX), SI
MOVQ 32(CX), SI
ADDQ SI, AX
MOVQ AX, (SP)
MOVQ ctx+16(FP), AX
@ -2281,8 +2281,8 @@ handle_loop:
loop_finished:
MOVQ br+8(FP), AX
MOVQ DX, 24(AX)
MOVB BL, 32(AX)
MOVQ SI, 8(AX)
MOVB BL, 40(AX)
MOVQ SI, 32(AX)
// Update the context
MOVQ ctx+16(FP), AX
@ -2349,9 +2349,9 @@ error_not_enough_space:
TEXT ·sequenceDecs_decodeSync_bmi2(SB), $64-32
MOVQ br+8(FP), BX
MOVQ 24(BX), AX
MOVBQZX 32(BX), DX
MOVBQZX 40(BX), DX
MOVQ (BX), CX
MOVQ 8(BX), BX
MOVQ 32(BX), BX
ADDQ BX, CX
MOVQ CX, (SP)
MOVQ ctx+16(FP), CX
@ -2801,8 +2801,8 @@ handle_loop:
loop_finished:
MOVQ br+8(FP), CX
MOVQ AX, 24(CX)
MOVB DL, 32(CX)
MOVQ BX, 8(CX)
MOVB DL, 40(CX)
MOVQ BX, 32(CX)
// Update the context
MOVQ ctx+16(FP), AX
@ -2869,9 +2869,9 @@ error_not_enough_space:
TEXT ·sequenceDecs_decodeSync_safe_amd64(SB), $64-32
MOVQ br+8(FP), CX
MOVQ 24(CX), DX
MOVBQZX 32(CX), BX
MOVBQZX 40(CX), BX
MOVQ (CX), AX
MOVQ 8(CX), SI
MOVQ 32(CX), SI
ADDQ SI, AX
MOVQ AX, (SP)
MOVQ ctx+16(FP), AX
@ -3465,8 +3465,8 @@ handle_loop:
loop_finished:
MOVQ br+8(FP), AX
MOVQ DX, 24(AX)
MOVB BL, 32(AX)
MOVQ SI, 8(AX)
MOVB BL, 40(AX)
MOVQ SI, 32(AX)
// Update the context
MOVQ ctx+16(FP), AX
@ -3533,9 +3533,9 @@ error_not_enough_space:
TEXT ·sequenceDecs_decodeSync_safe_bmi2(SB), $64-32
MOVQ br+8(FP), BX
MOVQ 24(BX), AX
MOVBQZX 32(BX), DX
MOVBQZX 40(BX), DX
MOVQ (BX), CX
MOVQ 8(BX), BX
MOVQ 32(BX), BX
ADDQ BX, CX
MOVQ CX, (SP)
MOVQ ctx+16(FP), CX
@ -4087,8 +4087,8 @@ handle_loop:
loop_finished:
MOVQ br+8(FP), CX
MOVQ AX, 24(CX)
MOVB DL, 32(CX)
MOVQ BX, 8(CX)
MOVB DL, 40(CX)
MOVQ BX, 32(CX)
// Update the context
MOVQ ctx+16(FP), AX

2
vendor/github.com/klauspost/compress/zstd/seqdec_generic.go generated vendored
View File

@ -29,7 +29,7 @@ func (s *sequenceDecs) decode(seqs []seqVals) error {
}
for i := range seqs {
var ll, mo, ml int
if len(br.in) > 4+((maxOffsetBits+16+16)>>3) {
if br.cursor > 4+((maxOffsetBits+16+16)>>3) {
// inlined function:
// ll, mo, ml = s.nextFast(br, llState, mlState, ofState)

2
vendor/github.com/klauspost/compress/zstd/seqenc.go generated vendored
View File

@ -69,7 +69,6 @@ var llBitsTable = [maxLLCode + 1]byte{
func llCode(litLength uint32) uint8 {
const llDeltaCode = 19
if litLength <= 63 {
// Compiler insists on bounds check (Go 1.12)
return llCodeTable[litLength&63]
}
return uint8(highBit(litLength)) + llDeltaCode
@ -102,7 +101,6 @@ var mlBitsTable = [maxMLCode + 1]byte{
func mlCode(mlBase uint32) uint8 {
const mlDeltaCode = 36
if mlBase <= 127 {
// Compiler insists on bounds check (Go 1.12)
return mlCodeTable[mlBase&127]
}
return uint8(highBit(mlBase)) + mlDeltaCode

4
vendor/github.com/klauspost/compress/zstd/snappy.go generated vendored
View File

@ -197,7 +197,7 @@ func (r *SnappyConverter) Convert(in io.Reader, w io.Writer) (int64, error) {
n, r.err = w.Write(r.block.output)
if r.err != nil {
return written, err
return written, r.err
}
written += int64(n)
continue
@ -239,7 +239,7 @@ func (r *SnappyConverter) Convert(in io.Reader, w io.Writer) (int64, error) {
}
n, r.err = w.Write(r.block.output)
if r.err != nil {
return written, err
return written, r.err
}
written += int64(n)
continue

7
vendor/github.com/klauspost/compress/zstd/zstd.go generated vendored
View File

@ -5,10 +5,11 @@ package zstd
import (
"bytes"
"encoding/binary"
"errors"
"log"
"math"
"github.com/klauspost/compress/internal/le"
)
// enable debug printing
@ -110,11 +111,11 @@ func printf(format string, a ...interface{}) {
}
func load3232(b []byte, i int32) uint32 {
return binary.LittleEndian.Uint32(b[:len(b):len(b)][i:])
return le.Load32(b, i)
}
func load6432(b []byte, i int32) uint64 {
return binary.LittleEndian.Uint64(b[:len(b):len(b)][i:])
return le.Load64(b, i)
}
type byter interface {

7
vendor/modules.txt vendored
View File

@ -364,7 +364,7 @@ github.com/containers/psgo/internal/dev
github.com/containers/psgo/internal/host
github.com/containers/psgo/internal/proc
github.com/containers/psgo/internal/process
# github.com/containers/storage v1.57.2-0.20250228100055-700b765b2111
# github.com/containers/storage v1.57.3-0.20250310120440-ab85543c3c6a
## explicit; go 1.22.0
github.com/containers/storage
github.com/containers/storage/drivers
@ -732,13 +732,14 @@ github.com/json-iterator/go
# github.com/kevinburke/ssh_config v1.2.0
## explicit
github.com/kevinburke/ssh_config
# github.com/klauspost/compress v1.17.11
## explicit; go 1.21
# github.com/klauspost/compress v1.18.0
## explicit; go 1.22
github.com/klauspost/compress
github.com/klauspost/compress/flate
github.com/klauspost/compress/fse
github.com/klauspost/compress/huff0
github.com/klauspost/compress/internal/cpuinfo
github.com/klauspost/compress/internal/le
github.com/klauspost/compress/internal/snapref
github.com/klauspost/compress/zstd
github.com/klauspost/compress/zstd/internal/xxhash