mirror of https://github.com/docker/cli.git
vendor: github.com/klauspost/compress v1.15.12
full diff: https://github.com/klauspost/compress/compare/v1.15.9...v1.15.12 Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn
parent
d7869beade
commit
cd2098c461
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@ -56,7 +56,7 @@ require (
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github.com/golang/protobuf v1.5.2 // indirect
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github.com/gorilla/mux v1.8.0 // indirect
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github.com/inconshreveable/mousetrap v1.0.1 // indirect
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github.com/klauspost/compress v1.15.9 // indirect
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github.com/klauspost/compress v1.15.12 // indirect
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github.com/matttproud/golang_protobuf_extensions v1.0.4 // indirect
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github.com/miekg/pkcs11 v1.1.1 // indirect
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github.com/moby/sys/symlink v0.2.0 // indirect
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@ -251,8 +251,8 @@ github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8
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github.com/kisielk/errcheck v1.2.0/go.mod h1:/BMXB+zMLi60iA8Vv6Ksmxu/1UDYcXs4uQLJ+jE2L00=
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github.com/kisielk/errcheck v1.5.0/go.mod h1:pFxgyoBC7bSaBwPgfKdkLd5X25qrDl4LWUI2bnpBCr8=
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github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
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github.com/klauspost/compress v1.15.9 h1:wKRjX6JRtDdrE9qwa4b/Cip7ACOshUI4smpCQanqjSY=
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github.com/klauspost/compress v1.15.9/go.mod h1:PhcZ0MbTNciWF3rruxRgKxI5NkcHHrHUDtV4Yw2GlzU=
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github.com/klauspost/compress v1.15.12 h1:YClS/PImqYbn+UILDnqxQCZ3RehC9N318SU3kElDUEM=
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github.com/klauspost/compress v1.15.12/go.mod h1:QPwzmACJjUTFsnSHH934V6woptycfrDDJnH7hvFVbGM=
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github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
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github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
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github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
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@ -17,6 +17,30 @@ This package provides various compression algorithms.
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# changelog
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* Sept 26, 2022 (v1.15.11)
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* flate: Improve level 1-3 compression https://github.com/klauspost/compress/pull/678
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* zstd: Improve "best" compression by @nightwolfz in https://github.com/klauspost/compress/pull/677
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* zstd: Fix+reduce decompression allocations https://github.com/klauspost/compress/pull/668
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* zstd: Fix non-effective noescape tag https://github.com/klauspost/compress/pull/667
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* Sept 16, 2022 (v1.15.10)
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* zstd: Add [WithDecodeAllCapLimit](https://pkg.go.dev/github.com/klauspost/compress@v1.15.10/zstd#WithDecodeAllCapLimit) https://github.com/klauspost/compress/pull/649
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* Add Go 1.19 - deprecate Go 1.16 https://github.com/klauspost/compress/pull/651
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* flate: Improve level 5+6 compression https://github.com/klauspost/compress/pull/656
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* zstd: Improve "better" compresssion https://github.com/klauspost/compress/pull/657
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* s2: Improve "best" compression https://github.com/klauspost/compress/pull/658
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* s2: Improve "better" compression. https://github.com/klauspost/compress/pull/635
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* s2: Slightly faster non-assembly decompression https://github.com/klauspost/compress/pull/646
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* Use arrays for constant size copies https://github.com/klauspost/compress/pull/659
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* July 21, 2022 (v1.15.9)
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* zstd: Fix decoder crash on amd64 (no BMI) on invalid input https://github.com/klauspost/compress/pull/645
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* zstd: Disable decoder extended memory copies (amd64) due to possible crashes https://github.com/klauspost/compress/pull/644
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* zstd: Allow single segments up to "max decoded size" by @klauspost in https://github.com/klauspost/compress/pull/643
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* July 13, 2022 (v1.15.8)
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* gzip: fix stack exhaustion bug in Reader.Read https://github.com/klauspost/compress/pull/641
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@ -91,14 +115,14 @@ This package provides various compression algorithms.
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* gzhttp: Add zstd to transport by @klauspost in [#400](https://github.com/klauspost/compress/pull/400)
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* gzhttp: Make content-type optional by @klauspost in [#510](https://github.com/klauspost/compress/pull/510)
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<details>
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<summary>See Details</summary>
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Both compression and decompression now supports "synchronous" stream operations. This means that whenever "concurrency" is set to 1, they will operate without spawning goroutines.
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Stream decompression is now faster on asynchronous, since the goroutine allocation much more effectively splits the workload. On typical streams this will typically use 2 cores fully for decompression. When a stream has finished decoding no goroutines will be left over, so decoders can now safely be pooled and still be garbage collected.
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While the release has been extensively tested, it is recommended to testing when upgrading.
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</details>
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<details>
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<summary>See changes to v1.14.x</summary>
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* Feb 22, 2022 (v1.14.4)
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* flate: Fix rare huffman only (-2) corruption. [#503](https://github.com/klauspost/compress/pull/503)
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@ -125,6 +149,7 @@ While the release has been extensively tested, it is recommended to testing when
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* zstd: Performance improvement in [#420]( https://github.com/klauspost/compress/pull/420) [#456](https://github.com/klauspost/compress/pull/456) [#437](https://github.com/klauspost/compress/pull/437) [#467](https://github.com/klauspost/compress/pull/467) [#468](https://github.com/klauspost/compress/pull/468)
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* zstd: add arm64 xxhash assembly in [#464](https://github.com/klauspost/compress/pull/464)
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* Add garbled for binaries for s2 in [#445](https://github.com/klauspost/compress/pull/445)
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</details>
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<details>
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<summary>See changes to v1.13.x</summary>
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@ -763,17 +763,20 @@ func (d *Decoder) decompress4X8bit(dst, src []byte) ([]byte, error) {
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d.bufs.Put(buf)
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return nil, errors.New("corruption detected: stream overrun 1")
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}
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copy(out, buf[0][:])
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copy(out[dstEvery:], buf[1][:])
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copy(out[dstEvery*2:], buf[2][:])
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copy(out[dstEvery*3:], buf[3][:])
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out = out[bufoff:]
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decoded += bufoff * 4
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// There must at least be 3 buffers left.
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if len(out) < dstEvery*3 {
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if len(out)-bufoff < dstEvery*3 {
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d.bufs.Put(buf)
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return nil, errors.New("corruption detected: stream overrun 2")
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}
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//copy(out, buf[0][:])
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//copy(out[dstEvery:], buf[1][:])
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//copy(out[dstEvery*2:], buf[2][:])
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*(*[bufoff]byte)(out) = buf[0]
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*(*[bufoff]byte)(out[dstEvery:]) = buf[1]
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*(*[bufoff]byte)(out[dstEvery*2:]) = buf[2]
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*(*[bufoff]byte)(out[dstEvery*3:]) = buf[3]
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out = out[bufoff:]
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decoded += bufoff * 4
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}
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}
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if off > 0 {
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@ -997,17 +1000,22 @@ func (d *Decoder) decompress4X8bitExactly(dst, src []byte) ([]byte, error) {
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d.bufs.Put(buf)
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return nil, errors.New("corruption detected: stream overrun 1")
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}
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copy(out, buf[0][:])
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copy(out[dstEvery:], buf[1][:])
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copy(out[dstEvery*2:], buf[2][:])
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copy(out[dstEvery*3:], buf[3][:])
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out = out[bufoff:]
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decoded += bufoff * 4
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// There must at least be 3 buffers left.
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if len(out) < dstEvery*3 {
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if len(out)-bufoff < dstEvery*3 {
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d.bufs.Put(buf)
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return nil, errors.New("corruption detected: stream overrun 2")
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}
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//copy(out, buf[0][:])
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//copy(out[dstEvery:], buf[1][:])
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//copy(out[dstEvery*2:], buf[2][:])
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// copy(out[dstEvery*3:], buf[3][:])
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*(*[bufoff]byte)(out) = buf[0]
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*(*[bufoff]byte)(out[dstEvery:]) = buf[1]
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*(*[bufoff]byte)(out[dstEvery*2:]) = buf[2]
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*(*[bufoff]byte)(out[dstEvery*3:]) = buf[3]
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out = out[bufoff:]
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decoded += bufoff * 4
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}
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}
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if off > 0 {
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@ -14,12 +14,14 @@ import (
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// decompress4x_main_loop_x86 is an x86 assembler implementation
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// of Decompress4X when tablelog > 8.
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//
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//go:noescape
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func decompress4x_main_loop_amd64(ctx *decompress4xContext)
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// decompress4x_8b_loop_x86 is an x86 assembler implementation
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// of Decompress4X when tablelog <= 8 which decodes 4 entries
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// per loop.
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//
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//go:noescape
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func decompress4x_8b_main_loop_amd64(ctx *decompress4xContext)
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@ -145,11 +147,13 @@ func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
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// decompress4x_main_loop_x86 is an x86 assembler implementation
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// of Decompress1X when tablelog > 8.
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//
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//go:noescape
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func decompress1x_main_loop_amd64(ctx *decompress1xContext)
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// decompress4x_main_loop_x86 is an x86 with BMI2 assembler implementation
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// of Decompress1X when tablelog > 8.
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//
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//go:noescape
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func decompress1x_main_loop_bmi2(ctx *decompress1xContext)
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@ -1,7 +1,6 @@
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// Code generated by command: go run gen.go -out ../decompress_amd64.s -pkg=huff0. DO NOT EDIT.
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//go:build amd64 && !appengine && !noasm && gc
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// +build amd64,!appengine,!noasm,gc
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// func decompress4x_main_loop_amd64(ctx *decompress4xContext)
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TEXT ·decompress4x_main_loop_amd64(SB), $0-8
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@ -122,17 +122,21 @@ func (d *Decoder) Decompress4X(dst, src []byte) ([]byte, error) {
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d.bufs.Put(buf)
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return nil, errors.New("corruption detected: stream overrun 1")
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}
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copy(out, buf[0][:])
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copy(out[dstEvery:], buf[1][:])
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copy(out[dstEvery*2:], buf[2][:])
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copy(out[dstEvery*3:], buf[3][:])
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out = out[bufoff:]
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decoded += bufoff * 4
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// There must at least be 3 buffers left.
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if len(out) < dstEvery*3 {
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if len(out)-bufoff < dstEvery*3 {
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d.bufs.Put(buf)
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return nil, errors.New("corruption detected: stream overrun 2")
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}
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//copy(out, buf[0][:])
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//copy(out[dstEvery:], buf[1][:])
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//copy(out[dstEvery*2:], buf[2][:])
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//copy(out[dstEvery*3:], buf[3][:])
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*(*[bufoff]byte)(out) = buf[0]
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*(*[bufoff]byte)(out[dstEvery:]) = buf[1]
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*(*[bufoff]byte)(out[dstEvery*2:]) = buf[2]
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*(*[bufoff]byte)(out[dstEvery*3:]) = buf[3]
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out = out[bufoff:]
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decoded += bufoff * 4
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}
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}
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if off > 0 {
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@ -18,6 +18,7 @@ func load64(b []byte, i int) uint64 {
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// emitLiteral writes a literal chunk and returns the number of bytes written.
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//
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// It assumes that:
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//
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// dst is long enough to hold the encoded bytes
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// 1 <= len(lit) && len(lit) <= 65536
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func emitLiteral(dst, lit []byte) int {
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@ -42,6 +43,7 @@ func emitLiteral(dst, lit []byte) int {
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// emitCopy writes a copy chunk and returns the number of bytes written.
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//
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// It assumes that:
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//
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// dst is long enough to hold the encoded bytes
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// 1 <= offset && offset <= 65535
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// 4 <= length && length <= 65535
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@ -89,6 +91,7 @@ func emitCopy(dst []byte, offset, length int) int {
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// src[i:i+k-j] and src[j:k] have the same contents.
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//
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// It assumes that:
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//
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// 0 <= i && i < j && j <= len(src)
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func extendMatch(src []byte, i, j int) int {
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for ; j < len(src) && src[i] == src[j]; i, j = i+1, j+1 {
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|
@ -105,8 +108,9 @@ func hash(u, shift uint32) uint32 {
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// been written.
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//
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// It also assumes that:
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//
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// len(dst) >= MaxEncodedLen(len(src)) &&
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// minNonLiteralBlockSize <= len(src) && len(src) <= maxBlockSize
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// minNonLiteralBlockSize <= len(src) && len(src) <= maxBlockSize
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func encodeBlock(dst, src []byte) (d int) {
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// Initialize the hash table. Its size ranges from 1<<8 to 1<<14 inclusive.
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// The table element type is uint16, as s < sLimit and sLimit < len(src)
|
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|
|
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|
|
@ -12,6 +12,8 @@ The `zstd` package is provided as open source software using a Go standard licen
|
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|
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Currently the package is heavily optimized for 64 bit processors and will be significantly slower on 32 bit processors.
|
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|
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For seekable zstd streams, see [this excellent package](https://github.com/SaveTheRbtz/zstd-seekable-format-go).
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|
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## Installation
|
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|
||||
Install using `go get -u github.com/klauspost/compress`. The package is located in `github.com/klauspost/compress/zstd`.
|
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|
|
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|
|
@ -10,7 +10,6 @@ import (
|
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"errors"
|
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"fmt"
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"io"
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"io/ioutil"
|
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"os"
|
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"path/filepath"
|
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"sync"
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|
|
@ -233,7 +232,7 @@ func (b *blockDec) decodeBuf(hist *history) error {
|
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if b.lowMem {
|
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b.dst = make([]byte, b.RLESize)
|
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} else {
|
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b.dst = make([]byte, maxBlockSize)
|
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b.dst = make([]byte, maxCompressedBlockSize)
|
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}
|
||||
}
|
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b.dst = b.dst[:b.RLESize]
|
||||
|
|
@ -651,7 +650,7 @@ func (b *blockDec) prepareSequences(in []byte, hist *history) (err error) {
|
|||
fatalErr(binary.Write(&buf, binary.LittleEndian, hist.decoders.matchLengths.fse))
|
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fatalErr(binary.Write(&buf, binary.LittleEndian, hist.decoders.offsets.fse))
|
||||
buf.Write(in)
|
||||
ioutil.WriteFile(filepath.Join("testdata", "seqs", fn), buf.Bytes(), os.ModePerm)
|
||||
os.WriteFile(filepath.Join("testdata", "seqs", fn), buf.Bytes(), os.ModePerm)
|
||||
}
|
||||
|
||||
return nil
|
||||
|
|
|
|||
|
|
@ -7,7 +7,6 @@ package zstd
|
|||
import (
|
||||
"fmt"
|
||||
"io"
|
||||
"io/ioutil"
|
||||
)
|
||||
|
||||
type byteBuffer interface {
|
||||
|
|
@ -124,7 +123,7 @@ func (r *readerWrapper) readByte() (byte, error) {
|
|||
}
|
||||
|
||||
func (r *readerWrapper) skipN(n int64) error {
|
||||
n2, err := io.CopyN(ioutil.Discard, r.r, n)
|
||||
n2, err := io.CopyN(io.Discard, r.r, n)
|
||||
if n2 != n {
|
||||
err = io.ErrUnexpectedEOF
|
||||
}
|
||||
|
|
|
|||
|
|
@ -35,6 +35,7 @@ type Decoder struct {
|
|||
br readerWrapper
|
||||
enabled bool
|
||||
inFrame bool
|
||||
dstBuf []byte
|
||||
}
|
||||
|
||||
frame *frameDec
|
||||
|
|
@ -187,21 +188,23 @@ func (d *Decoder) Reset(r io.Reader) error {
|
|||
}
|
||||
|
||||
// If bytes buffer and < 5MB, do sync decoding anyway.
|
||||
if bb, ok := r.(byter); ok && bb.Len() < 5<<20 {
|
||||
if bb, ok := r.(byter); ok && bb.Len() < d.o.decodeBufsBelow && !d.o.limitToCap {
|
||||
bb2 := bb
|
||||
if debugDecoder {
|
||||
println("*bytes.Buffer detected, doing sync decode, len:", bb.Len())
|
||||
}
|
||||
b := bb2.Bytes()
|
||||
var dst []byte
|
||||
if cap(d.current.b) > 0 {
|
||||
dst = d.current.b
|
||||
if cap(d.syncStream.dstBuf) > 0 {
|
||||
dst = d.syncStream.dstBuf[:0]
|
||||
}
|
||||
|
||||
dst, err := d.DecodeAll(b, dst[:0])
|
||||
dst, err := d.DecodeAll(b, dst)
|
||||
if err == nil {
|
||||
err = io.EOF
|
||||
}
|
||||
// Save output buffer
|
||||
d.syncStream.dstBuf = dst
|
||||
d.current.b = dst
|
||||
d.current.err = err
|
||||
d.current.flushed = true
|
||||
|
|
@ -216,6 +219,7 @@ func (d *Decoder) Reset(r io.Reader) error {
|
|||
d.current.err = nil
|
||||
d.current.flushed = false
|
||||
d.current.d = nil
|
||||
d.syncStream.dstBuf = nil
|
||||
|
||||
// Ensure no-one else is still running...
|
||||
d.streamWg.Wait()
|
||||
|
|
@ -312,6 +316,7 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
|
|||
// Grab a block decoder and frame decoder.
|
||||
block := <-d.decoders
|
||||
frame := block.localFrame
|
||||
initialSize := len(dst)
|
||||
defer func() {
|
||||
if debugDecoder {
|
||||
printf("re-adding decoder: %p", block)
|
||||
|
|
@ -354,7 +359,16 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
|
|||
return dst, ErrWindowSizeExceeded
|
||||
}
|
||||
if frame.FrameContentSize != fcsUnknown {
|
||||
if frame.FrameContentSize > d.o.maxDecodedSize-uint64(len(dst)) {
|
||||
if frame.FrameContentSize > d.o.maxDecodedSize-uint64(len(dst)-initialSize) {
|
||||
if debugDecoder {
|
||||
println("decoder size exceeded; fcs:", frame.FrameContentSize, "> mcs:", d.o.maxDecodedSize-uint64(len(dst)-initialSize), "len:", len(dst))
|
||||
}
|
||||
return dst, ErrDecoderSizeExceeded
|
||||
}
|
||||
if d.o.limitToCap && frame.FrameContentSize > uint64(cap(dst)-len(dst)) {
|
||||
if debugDecoder {
|
||||
println("decoder size exceeded; fcs:", frame.FrameContentSize, "> (cap-len)", cap(dst)-len(dst))
|
||||
}
|
||||
return dst, ErrDecoderSizeExceeded
|
||||
}
|
||||
if cap(dst)-len(dst) < int(frame.FrameContentSize) {
|
||||
|
|
@ -364,7 +378,7 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
|
|||
}
|
||||
}
|
||||
|
||||
if cap(dst) == 0 {
|
||||
if cap(dst) == 0 && !d.o.limitToCap {
|
||||
// Allocate len(input) * 2 by default if nothing is provided
|
||||
// and we didn't get frame content size.
|
||||
size := len(input) * 2
|
||||
|
|
@ -382,6 +396,9 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
|
|||
if err != nil {
|
||||
return dst, err
|
||||
}
|
||||
if uint64(len(dst)-initialSize) > d.o.maxDecodedSize {
|
||||
return dst, ErrDecoderSizeExceeded
|
||||
}
|
||||
if len(frame.bBuf) == 0 {
|
||||
if debugDecoder {
|
||||
println("frame dbuf empty")
|
||||
|
|
@ -667,6 +684,7 @@ func (d *Decoder) startStreamDecoder(ctx context.Context, r io.Reader, output ch
|
|||
if debugDecoder {
|
||||
println("Async 1: new history, recent:", block.async.newHist.recentOffsets)
|
||||
}
|
||||
hist.reset()
|
||||
hist.decoders = block.async.newHist.decoders
|
||||
hist.recentOffsets = block.async.newHist.recentOffsets
|
||||
hist.windowSize = block.async.newHist.windowSize
|
||||
|
|
@ -698,6 +716,7 @@ func (d *Decoder) startStreamDecoder(ctx context.Context, r io.Reader, output ch
|
|||
seqExecute <- block
|
||||
}
|
||||
close(seqExecute)
|
||||
hist.reset()
|
||||
}()
|
||||
|
||||
var wg sync.WaitGroup
|
||||
|
|
@ -721,6 +740,7 @@ func (d *Decoder) startStreamDecoder(ctx context.Context, r io.Reader, output ch
|
|||
if debugDecoder {
|
||||
println("Async 2: new history")
|
||||
}
|
||||
hist.reset()
|
||||
hist.windowSize = block.async.newHist.windowSize
|
||||
hist.allocFrameBuffer = block.async.newHist.allocFrameBuffer
|
||||
if block.async.newHist.dict != nil {
|
||||
|
|
@ -750,7 +770,7 @@ func (d *Decoder) startStreamDecoder(ctx context.Context, r io.Reader, output ch
|
|||
if block.lowMem {
|
||||
block.dst = make([]byte, block.RLESize)
|
||||
} else {
|
||||
block.dst = make([]byte, maxBlockSize)
|
||||
block.dst = make([]byte, maxCompressedBlockSize)
|
||||
}
|
||||
}
|
||||
block.dst = block.dst[:block.RLESize]
|
||||
|
|
@ -802,13 +822,14 @@ func (d *Decoder) startStreamDecoder(ctx context.Context, r io.Reader, output ch
|
|||
if debugDecoder {
|
||||
println("decoder goroutines finished")
|
||||
}
|
||||
hist.reset()
|
||||
}()
|
||||
|
||||
var hist history
|
||||
decodeStream:
|
||||
for {
|
||||
var hist history
|
||||
var hasErr bool
|
||||
|
||||
hist.reset()
|
||||
decodeBlock := func(block *blockDec) {
|
||||
if hasErr {
|
||||
if block != nil {
|
||||
|
|
@ -852,6 +873,10 @@ decodeStream:
|
|||
}
|
||||
}
|
||||
if err == nil && d.frame.WindowSize > d.o.maxWindowSize {
|
||||
if debugDecoder {
|
||||
println("decoder size exceeded, fws:", d.frame.WindowSize, "> mws:", d.o.maxWindowSize)
|
||||
}
|
||||
|
||||
err = ErrDecoderSizeExceeded
|
||||
}
|
||||
if err != nil {
|
||||
|
|
@ -920,5 +945,6 @@ decodeStream:
|
|||
}
|
||||
close(seqDecode)
|
||||
wg.Wait()
|
||||
hist.reset()
|
||||
d.frame.history.b = frameHistCache
|
||||
}
|
||||
|
|
|
|||
|
|
@ -14,20 +14,23 @@ type DOption func(*decoderOptions) error
|
|||
|
||||
// options retains accumulated state of multiple options.
|
||||
type decoderOptions struct {
|
||||
lowMem bool
|
||||
concurrent int
|
||||
maxDecodedSize uint64
|
||||
maxWindowSize uint64
|
||||
dicts []dict
|
||||
ignoreChecksum bool
|
||||
lowMem bool
|
||||
concurrent int
|
||||
maxDecodedSize uint64
|
||||
maxWindowSize uint64
|
||||
dicts []dict
|
||||
ignoreChecksum bool
|
||||
limitToCap bool
|
||||
decodeBufsBelow int
|
||||
}
|
||||
|
||||
func (o *decoderOptions) setDefault() {
|
||||
*o = decoderOptions{
|
||||
// use less ram: true for now, but may change.
|
||||
lowMem: true,
|
||||
concurrent: runtime.GOMAXPROCS(0),
|
||||
maxWindowSize: MaxWindowSize,
|
||||
lowMem: true,
|
||||
concurrent: runtime.GOMAXPROCS(0),
|
||||
maxWindowSize: MaxWindowSize,
|
||||
decodeBufsBelow: 128 << 10,
|
||||
}
|
||||
if o.concurrent > 4 {
|
||||
o.concurrent = 4
|
||||
|
|
@ -114,6 +117,29 @@ func WithDecoderMaxWindow(size uint64) DOption {
|
|||
}
|
||||
}
|
||||
|
||||
// WithDecodeAllCapLimit will limit DecodeAll to decoding cap(dst)-len(dst) bytes,
|
||||
// or any size set in WithDecoderMaxMemory.
|
||||
// This can be used to limit decoding to a specific maximum output size.
|
||||
// Disabled by default.
|
||||
func WithDecodeAllCapLimit(b bool) DOption {
|
||||
return func(o *decoderOptions) error {
|
||||
o.limitToCap = b
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// WithDecodeBuffersBelow will fully decode readers that have a
|
||||
// `Bytes() []byte` and `Len() int` interface similar to bytes.Buffer.
|
||||
// This typically uses less allocations but will have the full decompressed object in memory.
|
||||
// Note that DecodeAllCapLimit will disable this, as well as giving a size of 0 or less.
|
||||
// Default is 128KiB.
|
||||
func WithDecodeBuffersBelow(size int) DOption {
|
||||
return func(o *decoderOptions) error {
|
||||
o.decodeBufsBelow = size
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// IgnoreChecksum allows to forcibly ignore checksum checking.
|
||||
func IgnoreChecksum(b bool) DOption {
|
||||
return func(o *decoderOptions) error {
|
||||
|
|
|
|||
|
|
@ -32,6 +32,7 @@ type match struct {
|
|||
length int32
|
||||
rep int32
|
||||
est int32
|
||||
_ [12]byte // Aligned size to cache line: 4+4+4+4+4 bytes + 12 bytes padding = 32 bytes
|
||||
}
|
||||
|
||||
const highScore = 25000
|
||||
|
|
|
|||
|
|
@ -416,15 +416,23 @@ encodeLoop:
|
|||
|
||||
// Try to find a better match by searching for a long match at the end of the current best match
|
||||
if s+matched < sLimit {
|
||||
// Allow some bytes at the beginning to mismatch.
|
||||
// Sweet spot is around 3 bytes, but depends on input.
|
||||
// The skipped bytes are tested in Extend backwards,
|
||||
// and still picked up as part of the match if they do.
|
||||
const skipBeginning = 3
|
||||
|
||||
nextHashL := hashLen(load6432(src, s+matched), betterLongTableBits, betterLongLen)
|
||||
cv := load3232(src, s)
|
||||
s2 := s + skipBeginning
|
||||
cv := load3232(src, s2)
|
||||
candidateL := e.longTable[nextHashL]
|
||||
coffsetL := candidateL.offset - e.cur - matched
|
||||
if coffsetL >= 0 && coffsetL < s && s-coffsetL < e.maxMatchOff && cv == load3232(src, coffsetL) {
|
||||
coffsetL := candidateL.offset - e.cur - matched + skipBeginning
|
||||
if coffsetL >= 0 && coffsetL < s2 && s2-coffsetL < e.maxMatchOff && cv == load3232(src, coffsetL) {
|
||||
// Found a long match, at least 4 bytes.
|
||||
matchedNext := e.matchlen(s+4, coffsetL+4, src) + 4
|
||||
matchedNext := e.matchlen(s2+4, coffsetL+4, src) + 4
|
||||
if matchedNext > matched {
|
||||
t = coffsetL
|
||||
s = s2
|
||||
matched = matchedNext
|
||||
if debugMatches {
|
||||
println("long match at end-of-match")
|
||||
|
|
@ -434,12 +442,13 @@ encodeLoop:
|
|||
|
||||
// Check prev long...
|
||||
if true {
|
||||
coffsetL = candidateL.prev - e.cur - matched
|
||||
if coffsetL >= 0 && coffsetL < s && s-coffsetL < e.maxMatchOff && cv == load3232(src, coffsetL) {
|
||||
coffsetL = candidateL.prev - e.cur - matched + skipBeginning
|
||||
if coffsetL >= 0 && coffsetL < s2 && s2-coffsetL < e.maxMatchOff && cv == load3232(src, coffsetL) {
|
||||
// Found a long match, at least 4 bytes.
|
||||
matchedNext := e.matchlen(s+4, coffsetL+4, src) + 4
|
||||
matchedNext := e.matchlen(s2+4, coffsetL+4, src) + 4
|
||||
if matchedNext > matched {
|
||||
t = coffsetL
|
||||
s = s2
|
||||
matched = matchedNext
|
||||
if debugMatches {
|
||||
println("prev long match at end-of-match")
|
||||
|
|
|
|||
|
|
@ -1103,7 +1103,8 @@ func (e *doubleFastEncoderDict) Reset(d *dict, singleBlock bool) {
|
|||
}
|
||||
|
||||
if allDirty || dirtyShardCnt > dLongTableShardCnt/2 {
|
||||
copy(e.longTable[:], e.dictLongTable)
|
||||
//copy(e.longTable[:], e.dictLongTable)
|
||||
e.longTable = *(*[dFastLongTableSize]tableEntry)(e.dictLongTable)
|
||||
for i := range e.longTableShardDirty {
|
||||
e.longTableShardDirty[i] = false
|
||||
}
|
||||
|
|
@ -1114,7 +1115,9 @@ func (e *doubleFastEncoderDict) Reset(d *dict, singleBlock bool) {
|
|||
continue
|
||||
}
|
||||
|
||||
copy(e.longTable[i*dLongTableShardSize:(i+1)*dLongTableShardSize], e.dictLongTable[i*dLongTableShardSize:(i+1)*dLongTableShardSize])
|
||||
// copy(e.longTable[i*dLongTableShardSize:(i+1)*dLongTableShardSize], e.dictLongTable[i*dLongTableShardSize:(i+1)*dLongTableShardSize])
|
||||
*(*[dLongTableShardSize]tableEntry)(e.longTable[i*dLongTableShardSize:]) = *(*[dLongTableShardSize]tableEntry)(e.dictLongTable[i*dLongTableShardSize:])
|
||||
|
||||
e.longTableShardDirty[i] = false
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -304,7 +304,7 @@ func (e *fastEncoder) EncodeNoHist(blk *blockEnc, src []byte) {
|
|||
minNonLiteralBlockSize = 1 + 1 + inputMargin
|
||||
)
|
||||
if debugEncoder {
|
||||
if len(src) > maxBlockSize {
|
||||
if len(src) > maxCompressedBlockSize {
|
||||
panic("src too big")
|
||||
}
|
||||
}
|
||||
|
|
@ -871,7 +871,8 @@ func (e *fastEncoderDict) Reset(d *dict, singleBlock bool) {
|
|||
const shardCnt = tableShardCnt
|
||||
const shardSize = tableShardSize
|
||||
if e.allDirty || dirtyShardCnt > shardCnt*4/6 {
|
||||
copy(e.table[:], e.dictTable)
|
||||
//copy(e.table[:], e.dictTable)
|
||||
e.table = *(*[tableSize]tableEntry)(e.dictTable)
|
||||
for i := range e.tableShardDirty {
|
||||
e.tableShardDirty[i] = false
|
||||
}
|
||||
|
|
@ -883,7 +884,8 @@ func (e *fastEncoderDict) Reset(d *dict, singleBlock bool) {
|
|||
continue
|
||||
}
|
||||
|
||||
copy(e.table[i*shardSize:(i+1)*shardSize], e.dictTable[i*shardSize:(i+1)*shardSize])
|
||||
//copy(e.table[i*shardSize:(i+1)*shardSize], e.dictTable[i*shardSize:(i+1)*shardSize])
|
||||
*(*[shardSize]tableEntry)(e.table[i*shardSize:]) = *(*[shardSize]tableEntry)(e.dictTable[i*shardSize:])
|
||||
e.tableShardDirty[i] = false
|
||||
}
|
||||
e.allDirty = false
|
||||
|
|
|
|||
|
|
@ -261,11 +261,16 @@ func (d *frameDec) reset(br byteBuffer) error {
|
|||
}
|
||||
d.history.windowSize = int(d.WindowSize)
|
||||
if !d.o.lowMem || d.history.windowSize < maxBlockSize {
|
||||
// Alloc 2x window size if not low-mem, or very small window size.
|
||||
// Alloc 2x window size if not low-mem, or window size below 2MB.
|
||||
d.history.allocFrameBuffer = d.history.windowSize * 2
|
||||
} else {
|
||||
// Alloc with one additional block
|
||||
d.history.allocFrameBuffer = d.history.windowSize + maxBlockSize
|
||||
if d.o.lowMem {
|
||||
// Alloc with 1MB extra.
|
||||
d.history.allocFrameBuffer = d.history.windowSize + maxBlockSize/2
|
||||
} else {
|
||||
// Alloc with 2MB extra.
|
||||
d.history.allocFrameBuffer = d.history.windowSize + maxBlockSize
|
||||
}
|
||||
}
|
||||
|
||||
if debugDecoder {
|
||||
|
|
@ -343,7 +348,7 @@ func (d *frameDec) consumeCRC() error {
|
|||
return nil
|
||||
}
|
||||
|
||||
// runDecoder will create a sync decoder that will decode a block of data.
|
||||
// runDecoder will run the decoder for the remainder of the frame.
|
||||
func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) {
|
||||
saved := d.history.b
|
||||
|
||||
|
|
@ -353,12 +358,23 @@ func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) {
|
|||
// Store input length, so we only check new data.
|
||||
crcStart := len(dst)
|
||||
d.history.decoders.maxSyncLen = 0
|
||||
if d.o.limitToCap {
|
||||
d.history.decoders.maxSyncLen = uint64(cap(dst) - len(dst))
|
||||
}
|
||||
if d.FrameContentSize != fcsUnknown {
|
||||
d.history.decoders.maxSyncLen = d.FrameContentSize + uint64(len(dst))
|
||||
if !d.o.limitToCap || d.FrameContentSize+uint64(len(dst)) < d.history.decoders.maxSyncLen {
|
||||
d.history.decoders.maxSyncLen = d.FrameContentSize + uint64(len(dst))
|
||||
}
|
||||
if d.history.decoders.maxSyncLen > d.o.maxDecodedSize {
|
||||
if debugDecoder {
|
||||
println("maxSyncLen:", d.history.decoders.maxSyncLen, "> maxDecodedSize:", d.o.maxDecodedSize)
|
||||
}
|
||||
return dst, ErrDecoderSizeExceeded
|
||||
}
|
||||
if uint64(cap(dst)) < d.history.decoders.maxSyncLen {
|
||||
if debugDecoder {
|
||||
println("maxSyncLen:", d.history.decoders.maxSyncLen)
|
||||
}
|
||||
if !d.o.limitToCap && uint64(cap(dst)) < d.history.decoders.maxSyncLen {
|
||||
// Alloc for output
|
||||
dst2 := make([]byte, len(dst), d.history.decoders.maxSyncLen+compressedBlockOverAlloc)
|
||||
copy(dst2, dst)
|
||||
|
|
@ -378,7 +394,13 @@ func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) {
|
|||
if err != nil {
|
||||
break
|
||||
}
|
||||
if uint64(len(d.history.b)) > d.o.maxDecodedSize {
|
||||
if uint64(len(d.history.b)-crcStart) > d.o.maxDecodedSize {
|
||||
println("runDecoder: maxDecodedSize exceeded", uint64(len(d.history.b)-crcStart), ">", d.o.maxDecodedSize)
|
||||
err = ErrDecoderSizeExceeded
|
||||
break
|
||||
}
|
||||
if d.o.limitToCap && len(d.history.b) > cap(dst) {
|
||||
println("runDecoder: cap exceeded", uint64(len(d.history.b)), ">", cap(dst))
|
||||
err = ErrDecoderSizeExceeded
|
||||
break
|
||||
}
|
||||
|
|
|
|||
|
|
@ -21,7 +21,8 @@ type buildDtableAsmContext struct {
|
|||
|
||||
// buildDtable_asm is an x86 assembly implementation of fseDecoder.buildDtable.
|
||||
// Function returns non-zero exit code on error.
|
||||
// go:noescape
|
||||
//
|
||||
//go:noescape
|
||||
func buildDtable_asm(s *fseDecoder, ctx *buildDtableAsmContext) int
|
||||
|
||||
// please keep in sync with _generate/gen_fse.go
|
||||
|
|
|
|||
|
|
@ -1,7 +1,6 @@
|
|||
// Code generated by command: go run gen_fse.go -out ../fse_decoder_amd64.s -pkg=zstd. DO NOT EDIT.
|
||||
|
||||
//go:build !appengine && !noasm && gc && !noasm
|
||||
// +build !appengine,!noasm,gc,!noasm
|
||||
|
||||
// func buildDtable_asm(s *fseDecoder, ctx *buildDtableAsmContext) int
|
||||
TEXT ·buildDtable_asm(SB), $0-24
|
||||
|
|
|
|||
|
|
@ -37,26 +37,23 @@ func (h *history) reset() {
|
|||
h.ignoreBuffer = 0
|
||||
h.error = false
|
||||
h.recentOffsets = [3]int{1, 4, 8}
|
||||
if f := h.decoders.litLengths.fse; f != nil && !f.preDefined {
|
||||
fseDecoderPool.Put(f)
|
||||
}
|
||||
if f := h.decoders.offsets.fse; f != nil && !f.preDefined {
|
||||
fseDecoderPool.Put(f)
|
||||
}
|
||||
if f := h.decoders.matchLengths.fse; f != nil && !f.preDefined {
|
||||
fseDecoderPool.Put(f)
|
||||
}
|
||||
h.decoders.freeDecoders()
|
||||
h.decoders = sequenceDecs{br: h.decoders.br}
|
||||
if h.huffTree != nil {
|
||||
if h.dict == nil || h.dict.litEnc != h.huffTree {
|
||||
huffDecoderPool.Put(h.huffTree)
|
||||
}
|
||||
}
|
||||
h.freeHuffDecoder()
|
||||
h.huffTree = nil
|
||||
h.dict = nil
|
||||
//printf("history created: %+v (l: %d, c: %d)", *h, len(h.b), cap(h.b))
|
||||
}
|
||||
|
||||
func (h *history) freeHuffDecoder() {
|
||||
if h.huffTree != nil {
|
||||
if h.dict == nil || h.dict.litEnc != h.huffTree {
|
||||
huffDecoderPool.Put(h.huffTree)
|
||||
h.huffTree = nil
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (h *history) setDict(dict *dict) {
|
||||
if dict == nil {
|
||||
return
|
||||
|
|
|
|||
|
|
@ -99,6 +99,21 @@ func (s *sequenceDecs) initialize(br *bitReader, hist *history, out []byte) erro
|
|||
return nil
|
||||
}
|
||||
|
||||
func (s *sequenceDecs) freeDecoders() {
|
||||
if f := s.litLengths.fse; f != nil && !f.preDefined {
|
||||
fseDecoderPool.Put(f)
|
||||
s.litLengths.fse = nil
|
||||
}
|
||||
if f := s.offsets.fse; f != nil && !f.preDefined {
|
||||
fseDecoderPool.Put(f)
|
||||
s.offsets.fse = nil
|
||||
}
|
||||
if f := s.matchLengths.fse; f != nil && !f.preDefined {
|
||||
fseDecoderPool.Put(f)
|
||||
s.matchLengths.fse = nil
|
||||
}
|
||||
}
|
||||
|
||||
// execute will execute the decoded sequence with the provided history.
|
||||
// The sequence must be evaluated before being sent.
|
||||
func (s *sequenceDecs) execute(seqs []seqVals, hist []byte) error {
|
||||
|
|
@ -299,7 +314,10 @@ func (s *sequenceDecs) decodeSync(hist []byte) error {
|
|||
}
|
||||
size := ll + ml + len(out)
|
||||
if size-startSize > maxBlockSize {
|
||||
return fmt.Errorf("output (%d) bigger than max block size (%d)", size-startSize, maxBlockSize)
|
||||
if size-startSize == 424242 {
|
||||
panic("here")
|
||||
}
|
||||
return fmt.Errorf("output bigger than max block size (%d)", maxBlockSize)
|
||||
}
|
||||
if size > cap(out) {
|
||||
// Not enough size, which can happen under high volume block streaming conditions
|
||||
|
|
@ -411,7 +429,7 @@ func (s *sequenceDecs) decodeSync(hist []byte) error {
|
|||
|
||||
// Check if space for literals
|
||||
if size := len(s.literals) + len(s.out) - startSize; size > maxBlockSize {
|
||||
return fmt.Errorf("output (%d) bigger than max block size (%d)", size, maxBlockSize)
|
||||
return fmt.Errorf("output bigger than max block size (%d)", maxBlockSize)
|
||||
}
|
||||
|
||||
// Add final literals
|
||||
|
|
|
|||
|
|
@ -32,18 +32,22 @@ type decodeSyncAsmContext struct {
|
|||
// sequenceDecs_decodeSync_amd64 implements the main loop of sequenceDecs.decodeSync in x86 asm.
|
||||
//
|
||||
// Please refer to seqdec_generic.go for the reference implementation.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_decodeSync_amd64(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
|
||||
|
||||
// sequenceDecs_decodeSync_bmi2 implements the main loop of sequenceDecs.decodeSync in x86 asm with BMI2 extensions.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_decodeSync_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
|
||||
|
||||
// sequenceDecs_decodeSync_safe_amd64 does the same as above, but does not write more than output buffer.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_decodeSync_safe_amd64(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
|
||||
|
||||
// sequenceDecs_decodeSync_safe_bmi2 does the same as above, but does not write more than output buffer.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_decodeSync_safe_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeSyncAsmContext) int
|
||||
|
||||
|
|
@ -135,7 +139,7 @@ func (s *sequenceDecs) decodeSyncSimple(hist []byte) (bool, error) {
|
|||
if debugDecoder {
|
||||
println("msl:", s.maxSyncLen, "cap", cap(s.out), "bef:", startSize, "sz:", size-startSize, "mbs:", maxBlockSize, "outsz:", cap(s.out)-startSize)
|
||||
}
|
||||
return true, fmt.Errorf("output (%d) bigger than max block size (%d)", size-startSize, maxBlockSize)
|
||||
return true, fmt.Errorf("output bigger than max block size (%d)", maxBlockSize)
|
||||
|
||||
default:
|
||||
return true, fmt.Errorf("sequenceDecs_decode returned erronous code %d", errCode)
|
||||
|
|
@ -143,7 +147,8 @@ func (s *sequenceDecs) decodeSyncSimple(hist []byte) (bool, error) {
|
|||
|
||||
s.seqSize += ctx.litRemain
|
||||
if s.seqSize > maxBlockSize {
|
||||
return true, fmt.Errorf("output (%d) bigger than max block size (%d)", s.seqSize, maxBlockSize)
|
||||
return true, fmt.Errorf("output bigger than max block size (%d)", maxBlockSize)
|
||||
|
||||
}
|
||||
err := br.close()
|
||||
if err != nil {
|
||||
|
|
@ -201,20 +206,24 @@ const errorNotEnoughSpace = 5
|
|||
// sequenceDecs_decode implements the main loop of sequenceDecs in x86 asm.
|
||||
//
|
||||
// Please refer to seqdec_generic.go for the reference implementation.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_decode_amd64(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
|
||||
|
||||
// sequenceDecs_decode implements the main loop of sequenceDecs in x86 asm.
|
||||
//
|
||||
// Please refer to seqdec_generic.go for the reference implementation.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_decode_56_amd64(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
|
||||
|
||||
// sequenceDecs_decode implements the main loop of sequenceDecs in x86 asm with BMI2 extensions.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_decode_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
|
||||
|
||||
// sequenceDecs_decode implements the main loop of sequenceDecs in x86 asm with BMI2 extensions.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_decode_56_bmi2(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
|
||||
|
||||
|
|
@ -281,7 +290,7 @@ func (s *sequenceDecs) decode(seqs []seqVals) error {
|
|||
|
||||
s.seqSize += ctx.litRemain
|
||||
if s.seqSize > maxBlockSize {
|
||||
return fmt.Errorf("output (%d) bigger than max block size (%d)", s.seqSize, maxBlockSize)
|
||||
return fmt.Errorf("output bigger than max block size (%d)", maxBlockSize)
|
||||
}
|
||||
err := br.close()
|
||||
if err != nil {
|
||||
|
|
@ -308,10 +317,12 @@ type executeAsmContext struct {
|
|||
// Returns false if a match offset is too big.
|
||||
//
|
||||
// Please refer to seqdec_generic.go for the reference implementation.
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_executeSimple_amd64(ctx *executeAsmContext) bool
|
||||
|
||||
// Same as above, but with safe memcopies
|
||||
//
|
||||
//go:noescape
|
||||
func sequenceDecs_executeSimple_safe_amd64(ctx *executeAsmContext) bool
|
||||
|
||||
|
|
|
|||
|
|
@ -1,7 +1,6 @@
|
|||
// Code generated by command: go run gen.go -out ../seqdec_amd64.s -pkg=zstd. DO NOT EDIT.
|
||||
|
||||
//go:build !appengine && !noasm && gc && !noasm
|
||||
// +build !appengine,!noasm,gc,!noasm
|
||||
|
||||
// func sequenceDecs_decode_amd64(s *sequenceDecs, br *bitReader, ctx *decodeAsmContext) int
|
||||
// Requires: CMOV
|
||||
|
|
|
|||
|
|
@ -111,7 +111,7 @@ func (s *sequenceDecs) decode(seqs []seqVals) error {
|
|||
}
|
||||
s.seqSize += ll + ml
|
||||
if s.seqSize > maxBlockSize {
|
||||
return fmt.Errorf("output (%d) bigger than max block size (%d)", s.seqSize, maxBlockSize)
|
||||
return fmt.Errorf("output bigger than max block size (%d)", maxBlockSize)
|
||||
}
|
||||
litRemain -= ll
|
||||
if litRemain < 0 {
|
||||
|
|
@ -149,7 +149,7 @@ func (s *sequenceDecs) decode(seqs []seqVals) error {
|
|||
}
|
||||
s.seqSize += litRemain
|
||||
if s.seqSize > maxBlockSize {
|
||||
return fmt.Errorf("output (%d) bigger than max block size (%d)", s.seqSize, maxBlockSize)
|
||||
return fmt.Errorf("output bigger than max block size (%d)", maxBlockSize)
|
||||
}
|
||||
err := br.close()
|
||||
if err != nil {
|
||||
|
|
|
|||
|
|
@ -135,8 +135,8 @@ github.com/imdario/mergo
|
|||
# github.com/inconshreveable/mousetrap v1.0.1
|
||||
## explicit; go 1.18
|
||||
github.com/inconshreveable/mousetrap
|
||||
# github.com/klauspost/compress v1.15.9
|
||||
## explicit; go 1.16
|
||||
# github.com/klauspost/compress v1.15.12
|
||||
## explicit; go 1.17
|
||||
github.com/klauspost/compress
|
||||
github.com/klauspost/compress/fse
|
||||
github.com/klauspost/compress/huff0
|
||||
|
|
|
|||
Loading…
Reference in New Issue