From owner-svn-src-head@freebsd.org Tue Sep 3 14:07:29 2019 Return-Path: Delivered-To: svn-src-head@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id DD880DD4D4; Tue, 3 Sep 2019 14:07:06 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2610:1c1:1:6074::16:84]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46N80B3Z0Tz4QFH; Tue, 3 Sep 2019 14:07:06 +0000 (UTC) (envelope-from yuripv@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 1452) id 487231B0BC; Tue, 3 Sep 2019 14:06:28 +0000 (UTC) X-Original-To: yuripv@localmail.freebsd.org Delivered-To: yuripv@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id 0343A10D32; Fri, 19 Apr 2019 02:54:19 +0000 (UTC) (envelope-from owner-src-committers@freebsd.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2610:1c1:1:6074::16:84]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "freefall.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 5A8398A29A; Fri, 19 Apr 2019 02:54:19 +0000 (UTC) (envelope-from owner-src-committers@freebsd.org) Received: by freefall.freebsd.org (Postfix, from userid 538) id 1BF9910D12; Fri, 19 Apr 2019 02:54:19 +0000 (UTC) Delivered-To: src-committers@localmail.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) (Client CN "mx1.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by freefall.freebsd.org (Postfix) with ESMTPS id 8273710D10 for ; Fri, 19 Apr 2019 02:54:16 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 57EF78A294; Fri, 19 Apr 2019 02:54:16 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 304732835E; Fri, 19 Apr 2019 02:54:16 +0000 (UTC) (envelope-from cem@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x3J2sFem065810; Fri, 19 Apr 2019 02:54:15 GMT (envelope-from cem@FreeBSD.org) Received: (from cem@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x3J2sDUh065797; Fri, 19 Apr 2019 02:54:13 GMT (envelope-from cem@FreeBSD.org) Message-Id: <201904190254.x3J2sDUh065797@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: cem set sender to cem@FreeBSD.org using -f From: Conrad Meyer To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r346364 - in head: sys/contrib/zstd sys/contrib/zstd/contrib/docker sys/contrib/zstd/contrib/experimental_dict_builders sys/contrib/zstd/contrib/largeNbDicts sys/contrib/zstd/contrib/pr... 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X-SVN-Commit-Revision: 346364 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk X-Loop: FreeBSD.org Sender: owner-src-committers@freebsd.org X-Rspamd-Queue-Id: 5A8398A29A X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.95)[-0.952,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] Status: O X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Date: Tue, 03 Sep 2019 14:07:29 -0000 X-Original-Date: Fri, 19 Apr 2019 02:54:13 +0000 (UTC) X-List-Received-Date: Tue, 03 Sep 2019 14:07:29 -0000 Author: cem Date: Fri Apr 19 02:54:13 2019 New Revision: 346364 URL: https://svnweb.freebsd.org/changeset/base/346364 Log: Update to Zstandard 1.4.0 The full release notes can be found on Github: https://github.com/facebook/zstd/releases/tag/v1.4.0 Relnotes: yes Added: head/sys/contrib/zstd/CHANGELOG - copied unchanged from r346362, vendor/zstd/dist/CHANGELOG head/sys/contrib/zstd/contrib/docker/ - copied from r346362, vendor/zstd/dist/contrib/docker/ head/sys/contrib/zstd/contrib/experimental_dict_builders/ - copied from r346362, vendor/zstd/dist/contrib/experimental_dict_builders/ head/sys/contrib/zstd/contrib/largeNbDicts/ - copied from r346362, vendor/zstd/dist/contrib/largeNbDicts/ head/sys/contrib/zstd/contrib/premake/ - copied from r346362, vendor/zstd/dist/contrib/premake/ head/sys/contrib/zstd/contrib/snap/ - copied from r346362, vendor/zstd/dist/contrib/snap/ head/sys/contrib/zstd/examples/ - copied from r346362, vendor/zstd/dist/examples/ head/sys/contrib/zstd/programs/timefn.c - copied unchanged from r346362, vendor/zstd/dist/programs/timefn.c head/sys/contrib/zstd/programs/timefn.h - copied unchanged from r346362, vendor/zstd/dist/programs/timefn.h head/sys/contrib/zstd/tests/fuzz/dictionary_decompress.c - copied unchanged from r346362, vendor/zstd/dist/tests/fuzz/dictionary_decompress.c head/sys/contrib/zstd/tests/fuzz/dictionary_round_trip.c - copied unchanged from r346362, vendor/zstd/dist/tests/fuzz/dictionary_round_trip.c Modified: head/sys/contrib/zstd/Makefile head/sys/contrib/zstd/README.md head/sys/contrib/zstd/contrib/pzstd/Makefile head/sys/contrib/zstd/contrib/pzstd/Pzstd.cpp head/sys/contrib/zstd/contrib/pzstd/utils/Range.h head/sys/contrib/zstd/contrib/pzstd/utils/ResourcePool.h head/sys/contrib/zstd/doc/README.md head/sys/contrib/zstd/doc/educational_decoder/Makefile head/sys/contrib/zstd/doc/educational_decoder/zstd_decompress.c head/sys/contrib/zstd/doc/zstd_manual.html head/sys/contrib/zstd/lib/Makefile head/sys/contrib/zstd/lib/README.md head/sys/contrib/zstd/lib/common/compiler.h head/sys/contrib/zstd/lib/common/fse.h head/sys/contrib/zstd/lib/common/threading.c head/sys/contrib/zstd/lib/common/xxhash.c head/sys/contrib/zstd/lib/common/zstd_internal.h head/sys/contrib/zstd/lib/compress/fse_compress.c head/sys/contrib/zstd/lib/compress/zstd_compress.c head/sys/contrib/zstd/lib/compress/zstd_compress_internal.h head/sys/contrib/zstd/lib/compress/zstd_fast.c head/sys/contrib/zstd/lib/compress/zstd_lazy.h head/sys/contrib/zstd/lib/compress/zstd_ldm.c head/sys/contrib/zstd/lib/compress/zstd_opt.c head/sys/contrib/zstd/lib/compress/zstdmt_compress.c head/sys/contrib/zstd/lib/compress/zstdmt_compress.h head/sys/contrib/zstd/lib/decompress/zstd_ddict.c head/sys/contrib/zstd/lib/decompress/zstd_decompress.c head/sys/contrib/zstd/lib/decompress/zstd_decompress_block.c head/sys/contrib/zstd/lib/decompress/zstd_decompress_internal.h head/sys/contrib/zstd/lib/dictBuilder/cover.c head/sys/contrib/zstd/lib/dictBuilder/cover.h head/sys/contrib/zstd/lib/dictBuilder/fastcover.c head/sys/contrib/zstd/lib/dictBuilder/zdict.h head/sys/contrib/zstd/lib/legacy/zstd_legacy.h head/sys/contrib/zstd/lib/legacy/zstd_v01.c head/sys/contrib/zstd/lib/legacy/zstd_v01.h head/sys/contrib/zstd/lib/legacy/zstd_v02.c head/sys/contrib/zstd/lib/legacy/zstd_v02.h head/sys/contrib/zstd/lib/legacy/zstd_v03.c head/sys/contrib/zstd/lib/legacy/zstd_v03.h head/sys/contrib/zstd/lib/legacy/zstd_v04.c head/sys/contrib/zstd/lib/legacy/zstd_v04.h head/sys/contrib/zstd/lib/legacy/zstd_v05.c head/sys/contrib/zstd/lib/legacy/zstd_v05.h head/sys/contrib/zstd/lib/legacy/zstd_v06.c head/sys/contrib/zstd/lib/legacy/zstd_v06.h head/sys/contrib/zstd/lib/legacy/zstd_v07.c head/sys/contrib/zstd/lib/legacy/zstd_v07.h head/sys/contrib/zstd/lib/zstd.h head/sys/contrib/zstd/programs/Makefile head/sys/contrib/zstd/programs/benchfn.c head/sys/contrib/zstd/programs/benchfn.h head/sys/contrib/zstd/programs/benchzstd.c head/sys/contrib/zstd/programs/benchzstd.h head/sys/contrib/zstd/programs/dibio.c head/sys/contrib/zstd/programs/fileio.c head/sys/contrib/zstd/programs/fileio.h head/sys/contrib/zstd/programs/platform.h head/sys/contrib/zstd/programs/util.c head/sys/contrib/zstd/programs/util.h head/sys/contrib/zstd/programs/zstd.1 head/sys/contrib/zstd/programs/zstd.1.md head/sys/contrib/zstd/programs/zstdcli.c head/sys/contrib/zstd/programs/zstdgrep head/sys/contrib/zstd/tests/Makefile head/sys/contrib/zstd/tests/README.md head/sys/contrib/zstd/tests/decodecorpus.c head/sys/contrib/zstd/tests/fullbench.c head/sys/contrib/zstd/tests/fuzz/Makefile head/sys/contrib/zstd/tests/fuzz/README.md head/sys/contrib/zstd/tests/fuzz/fuzz.py head/sys/contrib/zstd/tests/fuzz/fuzz_helpers.h head/sys/contrib/zstd/tests/fuzz/regression_driver.c head/sys/contrib/zstd/tests/fuzz/simple_round_trip.c head/sys/contrib/zstd/tests/fuzz/stream_decompress.c head/sys/contrib/zstd/tests/fuzz/stream_round_trip.c head/sys/contrib/zstd/tests/fuzz/zstd_helpers.c head/sys/contrib/zstd/tests/fuzz/zstd_helpers.h head/sys/contrib/zstd/tests/fuzzer.c head/sys/contrib/zstd/tests/legacy.c head/sys/contrib/zstd/tests/paramgrill.c head/sys/contrib/zstd/tests/playTests.sh head/sys/contrib/zstd/tests/poolTests.c head/sys/contrib/zstd/tests/regression/config.c head/sys/contrib/zstd/tests/regression/method.c head/sys/contrib/zstd/tests/regression/results.csv head/sys/contrib/zstd/tests/regression/test.c head/sys/contrib/zstd/tests/roundTripCrash.c head/sys/contrib/zstd/tests/symbols.c head/sys/contrib/zstd/tests/zbufftest.c head/sys/contrib/zstd/tests/zstreamtest.c head/sys/contrib/zstd/zlibWrapper/Makefile head/sys/contrib/zstd/zlibWrapper/README.md head/sys/contrib/zstd/zlibWrapper/examples/fitblk.c head/sys/contrib/zstd/zlibWrapper/examples/fitblk_original.c head/sys/contrib/zstd/zlibWrapper/examples/zwrapbench.c head/sys/contrib/zstd/zlibWrapper/gzguts.h head/usr.bin/zstd/Makefile Directory Properties: head/sys/contrib/zstd/ (props changed) Copied: head/sys/contrib/zstd/CHANGELOG (from r346362, vendor/zstd/dist/CHANGELOG) ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/sys/contrib/zstd/CHANGELOG Fri Apr 19 02:54:13 2019 (r346364, copy of r346362, vendor/zstd/dist/CHANGELOG) @@ -0,0 +1,461 @@ +v1.4.0 +perf: Improve level 1 compression speed in most scenarios by 6% by @gbtucker and @terrelln +api: Move the advanced API, including all functions in the staging section, to the stable section +api: Make ZSTD_e_flush and ZSTD_e_end block for maximum forward progress +api: Rename ZSTD_CCtxParam_getParameter to ZSTD_CCtxParams_getParameter +api: Rename ZSTD_CCtxParam_setParameter to ZSTD_CCtxParams_setParameter +api: Don't export ZSTDMT functions from the shared library by default +api: Require ZSTD_MULTITHREAD to be defined to use ZSTDMT +api: Add ZSTD_decompressBound() to provide an upper bound on decompressed size by @shakeelrao +api: Fix ZSTD_decompressDCtx() corner cases with a dictionary +api: Move ZSTD_getDictID_*() functions to the stable section +api: Add ZSTD_c_literalCompressionMode flag to enable or disable literal compression by @terrelln +api: Allow compression parameters to be set when a dictionary is used +api: Allow setting parameters before or after ZSTD_CCtx_loadDictionary() is called +api: Fix ZSTD_estimateCStreamSize_usingCCtxParams() +api: Setting ZSTD_d_maxWindowLog to 0 means use the default +cli: Ensure that a dictionary is not used to compress itself by @shakeelrao +cli: Add --[no-]compress-literals flag to enable or disable literal compression +doc: Update the examples to use the advanced API +doc: Explain how to transition from old streaming functions to the advanced API in the header +build: Improve the Windows release packages +build: Improve CMake build by @hjmjohnson +build: Build fixes for FreeBSD by @lwhsu +build: Remove redundant warnings by @thatsafunnyname +build: Fix tests on OpenBSD by @bket +build: Extend fuzzer build system to work with the new clang engine +build: CMake now creates the libzstd.so.1 symlink +build: Improve Menson build by @lzutao +misc: Fix symbolic link detection on FreeBSD +misc: Use physical core count for -T0 on FreeBSD by @cemeyer +misc: Fix zstd --list on truncated files by @kostmo +misc: Improve logging in debug mode by @felixhandte +misc: Add CirrusCI tests by @lwhsu +misc: Optimize dictionary memory usage in corner cases +misc: Improve the dictionary builder on small or homogeneous data +misc: Fix spelling across the repo by @jsoref + +v1.3.8 +perf: better decompression speed on large files (+7%) and cold dictionaries (+15%) +perf: slightly better compression ratio at high compression modes +api : finalized advanced API, last stage before "stable" status +api : new --rsyncable mode, by @terrelln +api : support decompression of empty frames into NULL (used to be an error) (#1385) +build: new set of macros to build a minimal size decoder, by @felixhandte +build: fix compilation on MIPS32, reported by @clbr (#1441) +build: fix compilation with multiple -arch flags, by @ryandesign +build: highly upgraded meson build, by @lzutao +build: improved buck support, by @obelisk +build: fix cmake script : can create debug build, by @pitrou +build: Makefile : grep works on both colored consoles and systems without color support +build: fixed zstd-pgo, by @bmwiedemann +cli : support ZSTD_CLEVEL environment variable, by @yijinfb (#1423) +cli : --no-progress flag, preserving final summary (#1371), by @terrelln +cli : ensure destination file is not source file (#1422) +cli : clearer error messages, especially when input file not present +doc : clarified zstd_compression_format.md, by @ulikunitz +misc: fixed zstdgrep, returns 1 on failure, by @lzutao +misc: NEWS renamed as CHANGELOG, in accordance with fboss + +v1.3.7 +perf: slightly better decompression speed on clang (depending on hardware target) +fix : performance of dictionary compression for small input < 4 KB at levels 9 and 10 +build: no longer build backtrace by default in release mode; restrict further automatic mode +build: control backtrace support through build macro BACKTRACE +misc: added man pages for zstdless and zstdgrep, by @samrussell + +v1.3.6 +perf: much faster dictionary builder, by @jenniferliu +perf: faster dictionary compression on small data when using multiple contexts, by @felixhandte +perf: faster dictionary decompression when using a very large number of dictionaries simultaneously +cli : fix : does no longer overwrite destination when source does not exist (#1082) +cli : new command --adapt, for automatic compression level adaptation +api : fix : block api can be streamed with > 4 GB, reported by @catid +api : reduced ZSTD_DDict size by 2 KB +api : minimum negative compression level is defined, and can be queried using ZSTD_minCLevel(). +build: support Haiku target, by @korli +build: Read Legacy format is limited to v0.5+ by default. Can be changed at compile time with macro ZSTD_LEGACY_SUPPORT. +doc : zstd_compression_format.md updated to match wording in IETF RFC 8478 +misc: tests/paramgrill, a parameter optimizer, by @GeorgeLu97 + +v1.3.5 +perf: much faster dictionary compression, by @felixhandte +perf: small quality improvement for dictionary generation, by @terrelln +perf: slightly improved high compression levels (notably level 19) +mem : automatic memory release for long duration contexts +cli : fix : overlapLog can be manually set +cli : fix : decoding invalid lz4 frames +api : fix : performance degradation for dictionary compression when using advanced API, by @terrelln +api : change : clarify ZSTD_CCtx_reset() vs ZSTD_CCtx_resetParameters(), by @terrelln +build: select custom libzstd scope through control macros, by @GeorgeLu97 +build: OpenBSD patch, by @bket +build: make and make all are compatible with -j +doc : clarify zstd_compression_format.md, updated for IETF RFC process +misc: pzstd compatible with reproducible compilation, by @lamby + +v1.3.4 +perf: faster speed (especially decoding speed) on recent cpus (haswell+) +perf: much better performance associating --long with multi-threading, by @terrelln +perf: better compression at levels 13-15 +cli : asynchronous compression by default, for faster experience (use --single-thread for former behavior) +cli : smoother status report in multi-threading mode +cli : added command --fast=#, for faster compression modes +cli : fix crash when not overwriting existing files, by Pádraig Brady (@pixelb) +api : `nbThreads` becomes `nbWorkers` : 1 triggers asynchronous mode +api : compression levels can be negative, for even more speed +api : ZSTD_getFrameProgression() : get precise progress status of ZSTDMT anytime +api : ZSTDMT can accept new compression parameters during compression +api : implemented all advanced dictionary decompression prototypes +build: improved meson recipe, by Shawn Landden (@shawnl) +build: VS2017 scripts, by @HaydnTrigg +misc: all /contrib projects fixed +misc: added /contrib/docker script by @gyscos + +v1.3.3 +perf: faster zstd_opt strategy (levels 16-19) +fix : bug #944 : multithreading with shared ditionary and large data, reported by @gsliepen +cli : fix : content size written in header by default +cli : fix : improved LZ4 format support, by @felixhandte +cli : new : hidden command `-S`, to benchmark multiple files while generating one result per file +api : fix : support large skippable frames, by @terrelln +api : fix : streaming interface was adding a useless 3-bytes null block to small frames +api : change : when setting `pledgedSrcSize`, use `ZSTD_CONTENTSIZE_UNKNOWN` macro value to mean "unknown" +build: fix : compilation under rhel6 and centos6, reported by @pixelb +build: added `check` target + +v1.3.2 +new : long range mode, using --long command, by Stella Lau (@stellamplau) +new : ability to generate and decode magicless frames (#591) +changed : maximum nb of threads reduced to 200, to avoid address space exhaustion in 32-bits mode +fix : multi-threading compression works with custom allocators +fix : ZSTD_sizeof_CStream() was over-evaluating memory usage +fix : a rare compression bug when compression generates very large distances and bunch of other conditions (only possible at --ultra -22) +fix : 32-bits build can now decode large offsets (levels 21+) +cli : added LZ4 frame support by default, by Felix Handte (@felixhandte) +cli : improved --list output +cli : new : can split input file for dictionary training, using command -B# +cli : new : clean operation artefact on Ctrl-C interruption +cli : fix : do not change /dev/null permissions when using command -t with root access, reported by @mike155 (#851) +cli : fix : write file size in header in multiple-files mode +api : added macro ZSTD_COMPRESSBOUND() for static allocation +api : experimental : new advanced decompression API +api : fix : sizeof_CCtx() used to over-estimate +build: fix : no-multithread variant compiles without pool.c dependency, reported by Mitchell Blank Jr (@mitchblank) (#819) +build: better compatibility with reproducible builds, by Bernhard M. Wiedemann (@bmwiedemann) (#818) +example : added streaming_memory_usage +license : changed /examples license to BSD + GPLv2 +license : fix a few header files to reflect new license (#825) + +v1.3.1 +New license : BSD + GPLv2 +perf: substantially decreased memory usage in Multi-threading mode, thanks to reports by Tino Reichardt (@mcmilk) +perf: Multi-threading supports up to 256 threads. Cap at 256 when more are requested (#760) +cli : improved and fixed --list command, by @ib (#772) +cli : command -vV to list supported formats, by @ib (#771) +build : fixed binary variants, reported by @svenha (#788) +build : fix Visual compilation for non x86/x64 targets, reported by Greg Slazinski (@GregSlazinski) (#718) +API exp : breaking change : ZSTD_getframeHeader() provides more information +API exp : breaking change : pinned down values of error codes +doc : fixed huffman example, by Ulrich Kunitz (@ulikunitz) +new : contrib/adaptive-compression, I/O driven compression strength, by Paul Cruz (@paulcruz74) +new : contrib/long_distance_matching, statistics by Stella Lau (@stellamplau) +updated : contrib/linux-kernel, by Nick Terrell (@terrelln) + +v1.3.0 +cli : new : `--list` command, by Paul Cruz +cli : changed : xz/lzma support enabled by default +cli : changed : `-t *` continue processing list after a decompression error +API : added : ZSTD_versionString() +API : promoted to stable status : ZSTD_getFrameContentSize(), by Sean Purcell +API exp : new advanced API : ZSTD_compress_generic(), ZSTD_CCtx_setParameter() +API exp : new : API for static or external allocation : ZSTD_initStatic?Ctx() +API exp : added : ZSTD_decompressBegin_usingDDict(), requested by Guy Riddle (#700) +API exp : clarified memory estimation / measurement functions. +API exp : changed : strongest strategy renamed ZSTD_btultra, fastest strategy ZSTD_fast set to 1 +tools : decodecorpus can generate random dictionary-compressed samples, by Paul Cruz +new : contrib/seekable_format, demo and API, by Sean Purcell +changed : contrib/linux-kernel, updated version and license, by Nick Terrell + +v1.2.0 +cli : changed : Multithreading enabled by default (use target zstd-nomt or HAVE_THREAD=0 to disable) +cli : new : command -T0 means "detect and use nb of cores", by Sean Purcell +cli : new : zstdmt symlink hardwired to `zstd -T0` +cli : new : command --threads=# (#671) +cli : changed : cover dictionary builder by default, for improved quality, by Nick Terrell +cli : new : commands --train-cover and --train-legacy, to select dictionary algorithm and parameters +cli : experimental targets `zstd4` and `xzstd4`, with support for lz4 format, by Sean Purcell +cli : fix : does not output compressed data on console +cli : fix : ignore symbolic links unless --force specified, +API : breaking change : ZSTD_createCDict_advanced(), only use compressionParameters as argument +API : added : prototypes ZSTD_*_usingCDict_advanced(), for direct control over frameParameters. +API : improved: ZSTDMT_compressCCtx() reduced memory usage +API : fix : ZSTDMT_compressCCtx() now provides srcSize in header (#634) +API : fix : src size stored in frame header is controlled at end of frame +API : fix : enforced consistent rules for pledgedSrcSize==0 (#641) +API : fix : error code "GENERIC" replaced by "dstSizeTooSmall" when appropriate +build: improved cmake script, by @Majlen +build: enabled Multi-threading support for *BSD, by Baptiste Daroussin +tools: updated Paramgrill. Command -O# provides best parameters for sample and speed target. +new : contrib/linux-kernel version, by Nick Terrell + +v1.1.4 +cli : new : can compress in *.gz format, using --format=gzip command, by Przemyslaw Skibinski +cli : new : advanced benchmark command --priority=rt +cli : fix : write on sparse-enabled file systems in 32-bits mode, by @ds77 +cli : fix : --rm remains silent when input is stdin +cli : experimental : xzstd, with support for xz/lzma decoding, by Przemyslaw Skibinski +speed : improved decompression speed in streaming mode for single shot scenarios (+5%) +memory: DDict (decompression dictionary) memory usage down from 150 KB to 20 KB +arch: 32-bits variant able to generate and decode very long matches (>32 MB), by Sean Purcell +API : new : ZSTD_findFrameCompressedSize(), ZSTD_getFrameContentSize(), ZSTD_findDecompressedSize() +API : changed : dropped support of legacy versions <= v0.3 (can be changed by modifying ZSTD_LEGACY_SUPPORT value) +build : new: meson build system in contrib/meson, by Dima Krasner +build : improved cmake script, by @Majlen +build : added -Wformat-security flag, as recommended by Padraig Brady +doc : new : educational decoder, by Sean Purcell + +v1.1.3 +cli : zstd can decompress .gz files (can be disabled with `make zstd-nogz` or `make HAVE_ZLIB=0`) +cli : new : experimental target `make zstdmt`, with multi-threading support +cli : new : improved dictionary builder "cover" (experimental), by Nick Terrell, based on prior work by Giuseppe Ottaviano. +cli : new : advanced commands for detailed parameters, by Przemyslaw Skibinski +cli : fix zstdless on Mac OS-X, by Andrew Janke +cli : fix #232 "compress non-files" +dictBuilder : improved dictionary generation quality, thanks to Nick Terrell +API : new : lib/compress/ZSTDMT_compress.h multithreading API (experimental) +API : new : ZSTD_create?Dict_byReference(), requested by Bartosz Taudul +API : new : ZDICT_finalizeDictionary() +API : fix : ZSTD_initCStream_usingCDict() properly writes dictID into frame header, by Gregory Szorc (#511) +API : fix : all symbols properly exposed in libzstd, by Nick Terrell +build : support for Solaris target, by Przemyslaw Skibinski +doc : clarified specification, by Sean Purcell + +v1.1.2 +API : streaming : decompression : changed : automatic implicit reset when chain-decoding new frames without init +API : experimental : added : dictID retrieval functions, and ZSTD_initCStream_srcSize() +API : zbuff : changed : prototypes now generate deprecation warnings +lib : improved : faster decompression speed at ultra compression settings and 32-bits mode +lib : changed : only public ZSTD_ symbols are now exposed +lib : changed : reduced usage of stack memory +lib : fixed : several corner case bugs, by Nick Terrell +cli : new : gzstd, experimental version able to decode .gz files, by Przemyslaw Skibinski +cli : new : preserve file attributes +cli : new : added zstdless and zstdgrep tools +cli : fixed : status displays total amount decoded, even for file consisting of multiple frames (like pzstd) +cli : fixed : zstdcat +zlib_wrapper : added support for gz* functions, by Przemyslaw Skibinski +install : better compatibility with FreeBSD, by Dimitry Andric +source tree : changed : zbuff source files moved to lib/deprecated + +v1.1.1 +New : command -M#, --memory=, --memlimit=, --memlimit-decompress= to limit allowed memory consumption +New : doc/zstd_manual.html, by Przemyslaw Skibinski +Improved : slightly better compression ratio at --ultra levels (>= 20) +Improved : better memory usage when using streaming compression API, thanks to @Rogier-5 report +Added : API : ZSTD_initCStream_usingCDict(), ZSTD_initDStream_usingDDict() (experimental section) +Added : example/multiple_streaming_compression.c +Changed : zstd_errors.h is now installed within /include (and replaces errors_public.h) +Updated man page +Fixed : zstd-small, zstd-compress and zstd-decompress compilation targets + +v1.1.0 +New : contrib/pzstd, parallel version of zstd, by Nick Terrell +added : NetBSD install target (#338) +Improved : speed for batches of small files +Improved : speed of zlib wrapper, by Przemyslaw Skibinski +Changed : libzstd on Windows supports legacy formats, by Christophe Chevalier +Fixed : CLI -d output to stdout by default when input is stdin (#322) +Fixed : CLI correctly detects console on Mac OS-X +Fixed : CLI supports recursive mode `-r` on Mac OS-X +Fixed : Legacy decoders use unified error codes, reported by benrg (#341), fixed by Przemyslaw Skibinski +Fixed : compatibility with OpenBSD, reported by Juan Francisco Cantero Hurtado (#319) +Fixed : compatibility with Hurd, by Przemyslaw Skibinski (#365) +Fixed : zstd-pgo, reported by octoploid (#329) + +v1.0.0 +Change Licensing, all project is now BSD, Copyright Facebook +Small decompression speed improvement +API : Streaming API supports legacy format +API : ZDICT_getDictID(), ZSTD_sizeof_{CCtx, DCtx, CStream, DStream}(), ZSTD_setDStreamParameter() +CLI supports legacy formats v0.4+ +Fixed : compression fails on certain huge files, reported by Jesse McGrew +Enhanced documentation, by Przemyslaw Skibinski + +v0.8.1 +New streaming API +Changed : --ultra now enables levels beyond 19 +Changed : -i# now selects benchmark time in second +Fixed : ZSTD_compress* can now compress > 4 GB in a single pass, reported by Nick Terrell +Fixed : speed regression on specific patterns (#272) +Fixed : support for Z_SYNC_FLUSH, by Dmitry Krot (#291) +Fixed : ICC compilation, by Przemyslaw Skibinski + +v0.8.0 +Improved : better speed on clang and gcc -O2, thanks to Eric Biggers +New : Build on FreeBSD and DragonFly, thanks to JrMarino +Changed : modified API : ZSTD_compressEnd() +Fixed : legacy mode with ZSTD_HEAPMODE=0, by Christopher Bergqvist +Fixed : premature end of frame when zero-sized raw block, reported by Eric Biggers +Fixed : large dictionaries (> 384 KB), reported by Ilona Papava +Fixed : checksum correctly checked in single-pass mode +Fixed : combined --test amd --rm, reported by Andreas M. Nilsson +Modified : minor compression level adaptations +Updated : compression format specification to v0.2.0 +changed : zstd.h moved to /lib directory + +v0.7.5 +Transition version, supporting decoding of v0.8.x + +v0.7.4 +Added : homebrew for Mac, by Daniel Cade +Added : more examples +Fixed : segfault when using small dictionaries, reported by Felix Handte +Modified : default compression level for CLI is now 3 +Updated : specification, to v0.1.1 + +v0.7.3 +New : compression format specification +New : `--` separator, stating that all following arguments are file names. Suggested by Chip Turner. +New : `ZSTD_getDecompressedSize()` +New : OpenBSD target, by Juan Francisco Cantero Hurtado +New : `examples` directory +fixed : dictBuilder using HC levels, reported by Bartosz Taudul +fixed : legacy support from ZSTD_decompress_usingDDict(), reported by Felix Handte +fixed : multi-blocks decoding with intermediate uncompressed blocks, reported by Greg Slazinski +modified : removed "mem.h" and "error_public.h" dependencies from "zstd.h" (experimental section) +modified : legacy functions no longer need magic number + +v0.7.2 +fixed : ZSTD_decompressBlock() using multiple consecutive blocks. Reported by Greg Slazinski. +fixed : potential segfault on very large files (many gigabytes). Reported by Chip Turner. +fixed : CLI displays system error message when destination file cannot be created (#231). Reported by Chip Turner. + +v0.7.1 +fixed : ZBUFF_compressEnd() called multiple times with too small `dst` buffer, reported by Christophe Chevalier +fixed : dictBuilder fails if first sample is too small, reported by Руслан Ковалёв +fixed : corruption issue, reported by cj +modified : checksum enabled by default in command line mode + +v0.7.0 +New : Support for directory compression, using `-r`, thanks to Przemyslaw Skibinski +New : Command `--rm`, to remove source file after successful de/compression +New : Visual build scripts, by Christophe Chevalier +New : Support for Sparse File-systems (do not use space for zero-filled sectors) +New : Frame checksum support +New : Support pass-through mode (when using `-df`) +API : more efficient Dictionary API : `ZSTD_compress_usingCDict()`, `ZSTD_decompress_usingDDict()` +API : create dictionary files from custom content, by Giuseppe Ottaviano +API : support for custom malloc/free functions +New : controllable Dictionary ID +New : Support for skippable frames + +v0.6.1 +New : zlib wrapper API, thanks to Przemyslaw Skibinski +New : Ability to compile compressor / decompressor separately +Changed : new lib directory structure +Fixed : Legacy codec v0.5 compatible with dictionary decompression +Fixed : Decoder corruption error (#173) +Fixed : null-string roundtrip (#176) +New : benchmark mode can select directory as input +Experimental : midipix support, VMS support + +v0.6.0 +Stronger high compression modes, thanks to Przemyslaw Skibinski +API : ZSTD_getFrameParams() provides size of decompressed content +New : highest compression modes require `--ultra` command to fully unleash their capacity +Fixed : zstd cli return error code > 0 and removes dst file artifact when decompression fails, thanks to Chip Turner + +v0.5.1 +New : Optimal parsing => Very high compression modes, thanks to Przemyslaw Skibinski +Changed : Dictionary builder integrated into libzstd and zstd cli +Changed (!) : zstd cli now uses "multiple input files" as default mode. See `zstd -h`. +Fix : high compression modes for big-endian platforms +New : zstd cli : `-t` | `--test` command + +v0.5.0 +New : dictionary builder utility +Changed : streaming & dictionary API +Improved : better compression of small data + +v0.4.7 +Improved : small compression speed improvement in HC mode +Changed : `zstd_decompress.c` has ZSTD_LEGACY_SUPPORT to 0 by default +fix : bt search bug + +v0.4.6 +fix : fast compression mode on Windows +New : cmake configuration file, thanks to Artyom Dymchenko +Improved : high compression mode on repetitive data +New : block-level API +New : ZSTD_duplicateCCtx() + +v0.4.5 +new : -m/--multiple : compress/decompress multiple files + +v0.4.4 +Fixed : high compression modes for Windows 32 bits +new : external dictionary API extended to buffered mode and accessible through command line +new : windows DLL project, thanks to Christophe Chevalier + +v0.4.3 : +new : external dictionary API +new : zstd-frugal + +v0.4.2 : +Generic minor improvements for small blocks +Fixed : big-endian compatibility, by Peter Harris (#85) + +v0.4.1 +Fixed : ZSTD_LEGACY_SUPPORT=0 build mode (reported by Luben) +removed `zstd.c` + +v0.4.0 +Command line utility compatible with high compression levels +Removed zstdhc => merged into zstd +Added : ZBUFF API (see zstd_buffered.h) +Rolling buffer support + +v0.3.6 +small blocks params + +v0.3.5 +minor generic compression improvements + +v0.3.4 +Faster fast cLevels + +v0.3.3 +Small compression ratio improvement + +v0.3.2 +Fixed Visual Studio + +v0.3.1 : +Small compression ratio improvement + +v0.3 +HC mode : compression levels 2-26 + +v0.2.2 +Fix : Visual Studio 2013 & 2015 release compilation, by Christophe Chevalier + +v0.2.1 +Fix : Read errors, advanced fuzzer tests, by Hanno Böck + +v0.2.0 +**Breaking format change** +Faster decompression speed +Can still decode v0.1 format + +v0.1.3 +fix uninitialization warning, reported by Evan Nemerson + +v0.1.2 +frame concatenation support + +v0.1.1 +fix compression bug +detects write-flush errors + +v0.1.0 +first release Modified: head/sys/contrib/zstd/Makefile ============================================================================== --- head/sys/contrib/zstd/Makefile Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/Makefile Fri Apr 19 02:54:13 2019 (r346364) @@ -156,7 +156,7 @@ list: done \ } | column -t -s $$'\t' -.PHONY: install clangtest armtest usan asan uasan +.PHONY: install armtest usan asan uasan install: @$(MAKE) -C $(ZSTDDIR) $@ @$(MAKE) -C $(PRGDIR) $@ @@ -188,7 +188,7 @@ gcc7build: clean .PHONY: clangbuild clangbuild: clean clang -v - CXX=clang++ CC=clang $(MAKE) all MOREFLAGS="-Werror -Wconversion -Wno-sign-conversion -Wdocumentation" + CXX=clang++ CC=clang CFLAGS="-Werror -Wconversion -Wno-sign-conversion -Wdocumentation" $(MAKE) all m32build: clean gcc -v @@ -231,10 +231,6 @@ gcc5test: clean gcc6test: clean gcc-6 -v $(MAKE) all CC=gcc-6 MOREFLAGS="-Werror" - -clangtest: clean - clang -v - $(MAKE) all CXX=clang++ CC=clang MOREFLAGS="-Werror -Wconversion -Wno-sign-conversion -Wdocumentation" armtest: clean $(MAKE) -C $(TESTDIR) datagen # use native, faster Modified: head/sys/contrib/zstd/README.md ============================================================================== --- head/sys/contrib/zstd/README.md Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/README.md Fri Apr 19 02:54:13 2019 (r346364) @@ -14,6 +14,7 @@ a list of known ports and bindings is provided on [Zst [![Build Status][travisDevBadge]][travisLink] [![Build status][AppveyorDevBadge]][AppveyorLink] [![Build status][CircleDevBadge]][CircleLink] +[![Build status][CirrusDevBadge]][CirrusLink] [travisDevBadge]: https://travis-ci.org/facebook/zstd.svg?branch=dev "Continuous Integration test suite" [travisLink]: https://travis-ci.org/facebook/zstd @@ -21,14 +22,16 @@ a list of known ports and bindings is provided on [Zst [AppveyorLink]: https://ci.appveyor.com/project/YannCollet/zstd-p0yf0 [CircleDevBadge]: https://circleci.com/gh/facebook/zstd/tree/dev.svg?style=shield "Short test suite" [CircleLink]: https://circleci.com/gh/facebook/zstd +[CirrusDevBadge]: https://api.cirrus-ci.com/github/facebook/zstd.svg?branch=dev +[CirrusLink]: https://cirrus-ci.com/github/facebook/zstd ## Benchmarks For reference, several fast compression algorithms were tested and compared -on a server running Linux Debian (`Linux version 4.14.0-3-amd64`), -with a Core i7-6700K CPU @ 4.0GHz, +on a server running Arch Linux (`Linux version 5.0.5-arch1-1`), +with a Core i9-9900K CPU @ 5.0GHz, using [lzbench], an open-source in-memory benchmark by @inikep -compiled with [gcc] 7.3.0, +compiled with [gcc] 8.2.1, on the [Silesia compression corpus]. [lzbench]: https://github.com/inikep/lzbench @@ -37,14 +40,14 @@ on the [Silesia compression corpus]. | Compressor name | Ratio | Compression| Decompress.| | --------------- | ------| -----------| ---------- | -| **zstd 1.3.4 -1** | 2.877 | 470 MB/s | 1380 MB/s | -| zlib 1.2.11 -1 | 2.743 | 110 MB/s | 400 MB/s | -| brotli 1.0.2 -0 | 2.701 | 410 MB/s | 430 MB/s | -| quicklz 1.5.0 -1 | 2.238 | 550 MB/s | 710 MB/s | -| lzo1x 2.09 -1 | 2.108 | 650 MB/s | 830 MB/s | -| lz4 1.8.1 | 2.101 | 750 MB/s | 3700 MB/s | -| snappy 1.1.4 | 2.091 | 530 MB/s | 1800 MB/s | -| lzf 3.6 -1 | 2.077 | 400 MB/s | 860 MB/s | +| **zstd 1.4.0 -1** | 2.884 | 530 MB/s | 1360 MB/s | +| zlib 1.2.11 -1 | 2.743 | 110 MB/s | 440 MB/s | +| brotli 1.0.7 -0 | 2.701 | 430 MB/s | 470 MB/s | +| quicklz 1.5.0 -1 | 2.238 | 600 MB/s | 800 MB/s | +| lzo1x 2.09 -1 | 2.106 | 680 MB/s | 950 MB/s | +| lz4 1.8.3 | 2.101 | 800 MB/s | 4220 MB/s | +| snappy 1.1.4 | 2.073 | 580 MB/s | 2020 MB/s | +| lzf 3.6 -1 | 2.077 | 440 MB/s | 930 MB/s | [zlib]: http://www.zlib.net/ [LZ4]: http://www.lz4.org/ Modified: head/sys/contrib/zstd/contrib/pzstd/Makefile ============================================================================== --- head/sys/contrib/zstd/contrib/pzstd/Makefile Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/contrib/pzstd/Makefile Fri Apr 19 02:54:13 2019 (r346364) @@ -190,13 +190,15 @@ $(ZSTDDIR)/libzstd.a: $(ZSTD_FILES) CFLAGS="$(ALL_CFLAGS)" LDFLAGS="$(ALL_LDFLAGS)" $(MAKE) -C $(ZSTDDIR) libzstd.a # Rules to build the tests -test/RoundTripTest$(EXT): test/RoundTripTest.o $(PROGDIR)/datagen.o Options.o \ +test/RoundTripTest$(EXT): test/RoundTripTest.o $(PROGDIR)/datagen.o \ + $(PROGDIR)/util.o Options.o \ Pzstd.o SkippableFrame.o $(ZSTDDIR)/libzstd.a $(LD_COMMAND) test/%Test$(EXT): PZSTD_LDFLAGS += $(GTEST_LIB) test/%Test$(EXT): LIBS += -lgtest -lgtest_main -test/%Test$(EXT): test/%Test.o $(PROGDIR)/datagen.o Options.o Pzstd.o \ +test/%Test$(EXT): test/%Test.o $(PROGDIR)/datagen.o \ + $(PROGDIR)/util.o Options.o Pzstd.o \ SkippableFrame.o $(ZSTDDIR)/libzstd.a $(LD_COMMAND) Modified: head/sys/contrib/zstd/contrib/pzstd/Pzstd.cpp ============================================================================== --- head/sys/contrib/zstd/contrib/pzstd/Pzstd.cpp Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/contrib/pzstd/Pzstd.cpp Fri Apr 19 02:54:13 2019 (r346364) @@ -55,7 +55,7 @@ static std::uint64_t handleOneInput(const Options &opt SharedState& state) { auto inputSize = fileSizeOrZero(inputFile); // WorkQueue outlives ThreadPool so in the case of error we are certain - // we don't accidently try to call push() on it after it is destroyed + // we don't accidentally try to call push() on it after it is destroyed WorkQueue> outs{options.numThreads + 1}; std::uint64_t bytesRead; std::uint64_t bytesWritten; Modified: head/sys/contrib/zstd/contrib/pzstd/utils/Range.h ============================================================================== --- head/sys/contrib/zstd/contrib/pzstd/utils/Range.h Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/contrib/pzstd/utils/Range.h Fri Apr 19 02:54:13 2019 (r346364) @@ -9,7 +9,7 @@ /** * A subset of `folly/Range.h`. - * All code copied verbatiam modulo formatting + * All code copied verbatim modulo formatting */ #pragma once Modified: head/sys/contrib/zstd/contrib/pzstd/utils/ResourcePool.h ============================================================================== --- head/sys/contrib/zstd/contrib/pzstd/utils/ResourcePool.h Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/contrib/pzstd/utils/ResourcePool.h Fri Apr 19 02:54:13 2019 (r346364) @@ -54,7 +54,7 @@ class ResourcePool { /** * @returns A unique pointer to a resource. The resource is null iff - * there are no avaiable resources and `factory()` returns null. + * there are no available resources and `factory()` returns null. */ UniquePtr get() { std::lock_guard lock(mutex_); Modified: head/sys/contrib/zstd/doc/README.md ============================================================================== --- head/sys/contrib/zstd/doc/README.md Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/doc/README.md Fri Apr 19 02:54:13 2019 (r346364) @@ -12,8 +12,8 @@ __`zstd_compression_format.md`__ : This document defin Compliant decoders must adhere to this document, and compliant encoders must generate data that follows it. -Should you look for ressources to develop your own port of Zstandard algorithm, -you may find the following ressources useful : +Should you look for resources to develop your own port of Zstandard algorithm, +you may find the following resources useful : __`educational_decoder`__ : This directory contains an implementation of a Zstandard decoder, compliant with the Zstandard compression format. Modified: head/sys/contrib/zstd/doc/educational_decoder/Makefile ============================================================================== --- head/sys/contrib/zstd/doc/educational_decoder/Makefile Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/doc/educational_decoder/Makefile Fri Apr 19 02:54:13 2019 (r346364) @@ -7,7 +7,7 @@ CPPFLAGS += -I$(ZSTDDIR) -I$(ZSTDDIR)/common -I$(ZSTDD CFLAGS ?= -O3 CFLAGS += -Wall -Wextra -Wcast-qual -Wcast-align -Wshadow \ -Wstrict-aliasing=1 -Wswitch-enum -Wdeclaration-after-statement \ - -Wstrict-prototypes -Wundef -Wformat-security \ + -Wstrict-prototypes -Wundef \ -Wvla -Wformat=2 -Winit-self -Wfloat-equal -Wwrite-strings \ -Wredundant-decls CFLAGS += $(DEBUGFLAGS) Modified: head/sys/contrib/zstd/doc/educational_decoder/zstd_decompress.c ============================================================================== --- head/sys/contrib/zstd/doc/educational_decoder/zstd_decompress.c Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/doc/educational_decoder/zstd_decompress.c Fri Apr 19 02:54:13 2019 (r346364) @@ -358,7 +358,7 @@ static u32 copy_literals(const size_t seq, istream_t * ostream_t *const out); // Given an offset code from a sequence command (either an actual offset value -// or an index for previous offset), computes the correct offset and udpates +// or an index for previous offset), computes the correct offset and updates // the offset history static size_t compute_offset(sequence_command_t seq, u64 *const offset_hist); Modified: head/sys/contrib/zstd/doc/zstd_manual.html ============================================================================== --- head/sys/contrib/zstd/doc/zstd_manual.html Fri Apr 19 02:28:04 2019 (r346363) +++ head/sys/contrib/zstd/doc/zstd_manual.html Fri Apr 19 02:54:13 2019 (r346364) @@ -1,37 +1,46 @@ -zstd 1.3.8 Manual +zstd 1.4.0 Manual -

zstd 1.3.8 Manual

+

zstd 1.4.0 Manual

Contents

  1. Introduction
  2. Version
  3. Default constant
    4. -
  4. Simple API
    5. -
  5. Explicit context
    6. -
  6. Simple dictionary API
    7. -
  7. Bulk processing dictionary API
    8. -
  8. Streaming
    9. -
  9. Streaming compression - HowTo
    10. -
  10. Streaming decompression - HowTo
    11. -
  11. ADVANCED AND EXPERIMENTAL FUNCTIONS
    12. -
  12. Candidate API for promotion to stable status
    13. -
  13. Advanced compression API
    14. -
  14. experimental API (static linking only)
    15. -
  15. Frame size functions
    16. -
  16. Memory management
    17. -
  17. Advanced compression functions
    18. -
  18. Advanced decompression functions
    19. -
  19. Advanced streaming functions
    20. -
  20. Buffer-less and synchronous inner streaming functions
    21. -
  21. Buffer-less streaming compression (synchronous mode)
    22. -
  22. Buffer-less streaming decompression (synchronous mode)
    23. -
  23. ZSTD_getFrameHeader() :
    24. -
  24. Block level API
    25. +
  25. Constants
    26. +
  26. Simple API
    27. +
  27. Explicit context
    28. +
  28. Advanced compression API
    29. +
  29. Advanced decompression API
    30. +
  30. Streaming
    31. +
  31. Streaming compression - HowTo
    32. +
  32. This is a legacy streaming API, and can be replaced by ZSTD_CCtx_reset() and
    33. +
  33. Equivalent to:
    34. +
  34. Alternative for ZSTD_compressStream2(zcs, output, input, ZSTD_e_continue).
    35. +
  35. Equivalent to ZSTD_compressStream2(zcs, output, &emptyInput, ZSTD_e_flush).
    36. +
  36. Equivalent to ZSTD_compressStream2(zcs, output, &emptyInput, ZSTD_e_end).
    37. +
  37. Streaming decompression - HowTo
    38. +
  38. Simple dictionary API
    39. +
  39. Bulk processing dictionary API
    40. +
  40. Dictionary helper functions
    41. +
  41. Advanced dictionary and prefix API
    42. +
  42. ADVANCED AND EXPERIMENTAL FUNCTIONS
    43. +
  43. experimental API (static linking only)
    44. +
  44. Frame size functions
    45. +
  45. ZSTD_decompressBound() :
    46. +
  46. Memory management
    47. +
  47. Advanced compression functions
    48. +
  48. Advanced decompression functions
    49. +
  49. Advanced streaming functions
    50. +
  50. Buffer-less and synchronous inner streaming functions
    51. +
  51. Buffer-less streaming compression (synchronous mode)
    52. +
  52. Buffer-less streaming decompression (synchronous mode)
    53. +
  53. ZSTD_getFrameHeader() :
    54. +
  54. Block level API

Introduction

@@ -71,8 +80,10 @@

Default constant


 
-
Simple API

+
Constants

 
+
Simple API

+
 
size_t ZSTD_compress( void* dst, size_t dstCapacity,
                 const void* src, size_t srcSize,
                       int compressionLevel);
@@ -126,13 +137,22 @@ unsigned long long ZSTD_getFrameContentSize(const void
  @return : decompressed size of `src` frame content _if known and not empty_, 0 otherwise. 
 


 
+
size_t ZSTD_findFrameCompressedSize(const void* src, size_t srcSize);
+
 `src` should point to the start of a ZSTD frame or skippable frame.
+ `srcSize` must be >= first frame size
+ @return : the compressed size of the first frame starting at `src`,
+           suitable to pass as `srcSize` to `ZSTD_decompress` or similar,
+        or an error code if input is invalid 
+


+
 
Helper functions
#define ZSTD_COMPRESSBOUND(srcSize)   ((srcSize) + ((srcSize)>>8) + (((srcSize) < (128<<10)) ? (((128<<10) - (srcSize)) >> 11) /* margin, from 64 to 0 */ : 0))  /* this formula ensures that bound(A) + bound(B) <= bound(A+B) as long as A and B >= 128 KB */
 size_t      ZSTD_compressBound(size_t srcSize); /*!< maximum compressed size in worst case single-pass scenario */
 unsigned    ZSTD_isError(size_t code);          /*!< tells if a `size_t` function result is an error code */
 const char* ZSTD_getErrorName(size_t code);     /*!< provides readable string from an error code */
+int         ZSTD_minCLevel(void);               /*!< minimum negative compression level allowed */
 int         ZSTD_maxCLevel(void);               /*!< maximum compression level available */
 


-
Explicit context

+
Explicit context

 
 
Compression context
  When compressing many times,
   it is recommended to allocate a context just once, and re-use it for each successive compression operation.
@@ -169,229 +189,8 @@ size_t     ZSTD_freeDCtx(ZSTD_DCtx* dctx);
  
 


 
-
Simple dictionary API

+
Advanced compression API

 
-
size_t ZSTD_compress_usingDict(ZSTD_CCtx* ctx,
-                               void* dst, size_t dstCapacity,
-                         const void* src, size_t srcSize,
-                         const void* dict,size_t dictSize,
-                               int compressionLevel);
-
  Compression at an explicit compression level using a Dictionary.
-  A dictionary can be any arbitrary data segment (also called a prefix),
-  or a buffer with specified information (see dictBuilder/zdict.h).
-  Note : This function loads the dictionary, resulting in significant startup delay.
-         It's intended for a dictionary used only once.
-  Note 2 : When `dict == NULL || dictSize < 8` no dictionary is used. 
-


-
-
size_t ZSTD_decompress_usingDict(ZSTD_DCtx* dctx,
-                                 void* dst, size_t dstCapacity,
-                           const void* src, size_t srcSize,
-                           const void* dict,size_t dictSize);
-
  Decompression using a known Dictionary.
-  Dictionary must be identical to the one used during compression.
-  Note : This function loads the dictionary, resulting in significant startup delay.
-         It's intended for a dictionary used only once.
-  Note : When `dict == NULL || dictSize < 8` no dictionary is used. 
-


-
-
Bulk processing dictionary API

-
-
ZSTD_CDict* ZSTD_createCDict(const void* dictBuffer, size_t dictSize,
-                             int compressionLevel);
-
  When compressing multiple messages / blocks using the same dictionary, it's recommended to load it only once.
-  ZSTD_createCDict() will create a digested dictionary, ready to start future compression operations without startup cost.
-  ZSTD_CDict can be created once and shared by multiple threads concurrently, since its usage is read-only.
- `dictBuffer` can be released after ZSTD_CDict creation, because its content is copied within CDict.
-  Consider experimental function `ZSTD_createCDict_byReference()` if you prefer to not duplicate `dictBuffer` content.
-  Note : A ZSTD_CDict can be created from an empty dictBuffer, but it is inefficient when used to compress small data. 
-


-
-
size_t      ZSTD_freeCDict(ZSTD_CDict* CDict);
-
  Function frees memory allocated by ZSTD_createCDict(). 
-


-
-
size_t ZSTD_compress_usingCDict(ZSTD_CCtx* cctx,
-                                void* dst, size_t dstCapacity,
-                          const void* src, size_t srcSize,
-                          const ZSTD_CDict* cdict);
-
  Compression using a digested Dictionary.
-  Recommended when same dictionary is used multiple times.
-  Note : compression level is _decided at dictionary creation time_,
-     and frame parameters are hardcoded (dictID=yes, contentSize=yes, checksum=no) 
-


-
-
ZSTD_DDict* ZSTD_createDDict(const void* dictBuffer, size_t dictSize);
-
  Create a digested dictionary, ready to start decompression operation without startup delay.
-  dictBuffer can be released after DDict creation, as its content is copied inside DDict. 
-


-
-
size_t      ZSTD_freeDDict(ZSTD_DDict* ddict);
-
  Function frees memory allocated with ZSTD_createDDict() 
-


-
-
size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx,
-                                  void* dst, size_t dstCapacity,
-                            const void* src, size_t srcSize,
-                            const ZSTD_DDict* ddict);
-
  Decompression using a digested Dictionary.
-  Recommended when same dictionary is used multiple times. 
-


-
-
Streaming

-
-
typedef struct ZSTD_inBuffer_s {
-  const void* src;    /**< start of input buffer */
-  size_t size;        /**< size of input buffer */
-  size_t pos;         /**< position where reading stopped. Will be updated. Necessarily 0 <= pos <= size */
-} ZSTD_inBuffer;
-


-
typedef struct ZSTD_outBuffer_s {
-  void*  dst;         /**< start of output buffer */
-  size_t size;        /**< size of output buffer */
-  size_t pos;         /**< position where writing stopped. Will be updated. Necessarily 0 <= pos <= size */
-} ZSTD_outBuffer;
-


-
Streaming compression - HowTo
-  A ZSTD_CStream object is required to track streaming operation.
-  Use ZSTD_createCStream() and ZSTD_freeCStream() to create/release resources.
-  ZSTD_CStream objects can be reused multiple times on consecutive compression operations.
-  It is recommended to re-use ZSTD_CStream since it will play nicer with system's memory, by re-using already allocated memory.
-
-  For parallel execution, use one separate ZSTD_CStream per thread.
-
-  note : since v1.3.0, ZSTD_CStream and ZSTD_CCtx are the same thing.
-
-  Parameters are sticky : when starting a new compression on the same context,
-  it will re-use the same sticky parameters as previous compression session.
-  When in doubt, it's recommended to fully initialize the context before usage.
-  Use ZSTD_initCStream() to set the parameter to a selected compression level.
-  Use advanced API (ZSTD_CCtx_setParameter(), etc.) to set more specific parameters.
-
-  Use ZSTD_compressStream() as many times as necessary to consume input stream.
-  The function will automatically update both `pos` fields within `input` and `output`.
-  Note that the function may not consume the entire input,
-  for example, because the output buffer is already full,
-  in which case `input.pos < input.size`.
-  The caller must check if input has been entirely consumed.
-  If not, the caller must make some room to receive more compressed data,
-  and then present again remaining input data.
- @return : a size hint, preferred nb of bytes to use as input for next function call
-           or an error code, which can be tested using ZSTD_isError().
-           Note 1 : it's just a hint, to help latency a little, any value will work fine.
-           Note 2 : size hint is guaranteed to be <= ZSTD_CStreamInSize()
-
-  At any moment, it's possible to flush whatever data might remain stuck within internal buffer,
-  using ZSTD_flushStream(). `output->pos` will be updated.
-  Note that, if `output->size` is too small, a single invocation of ZSTD_flushStream() might not be enough (return code > 0).
-  In which case, make some room to receive more compressed data, and call again ZSTD_flushStream().
-  @return : 0 if internal buffers are entirely flushed,
-            >0 if some data still present within internal buffer (the value is minimal estimation of remaining size),
-            or an error code, which can be tested using ZSTD_isError().
-
-  ZSTD_endStream() instructs to finish a frame.
-  It will perform a flush and write frame epilogue.
-  The epilogue is required for decoders to consider a frame completed.
-  flush() operation is the same, and follows same rules as ZSTD_flushStream().
-  @return : 0 if frame fully completed and fully flushed,
-            >0 if some data still present within internal buffer (the value is minimal estimation of remaining size),
-            or an error code, which can be tested using ZSTD_isError().
-
- 
-

-
-
typedef ZSTD_CCtx ZSTD_CStream;  /**< CCtx and CStream are now effectively same object (>= v1.3.0) */
-


-
ZSTD_CStream management functions
ZSTD_CStream* ZSTD_createCStream(void);
-size_t ZSTD_freeCStream(ZSTD_CStream* zcs);
-


-
Streaming compression functions
size_t ZSTD_initCStream(ZSTD_CStream* zcs, int compressionLevel);
-size_t ZSTD_compressStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output, ZSTD_inBuffer* input);
-size_t ZSTD_flushStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output);
-size_t ZSTD_endStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output);
-


-
size_t ZSTD_CStreamInSize(void);    /**< recommended size for input buffer */
-


-
size_t ZSTD_CStreamOutSize(void);   /**< recommended size for output buffer. Guarantee to successfully flush at least one complete compressed block in all circumstances. */
-


-
Streaming decompression - HowTo
-  A ZSTD_DStream object is required to track streaming operations.
-  Use ZSTD_createDStream() and ZSTD_freeDStream() to create/release resources.
-  ZSTD_DStream objects can be re-used multiple times.
-
-  Use ZSTD_initDStream() to start a new decompression operation.
- @return : recommended first input size
-  Alternatively, use advanced API to set specific properties.
-
-  Use ZSTD_decompressStream() repetitively to consume your input.
-  The function will update both `pos` fields.
-  If `input.pos < input.size`, some input has not been consumed.
-  It's up to the caller to present again remaining data.
-  The function tries to flush all data decoded immediately, respecting output buffer size.
-  If `output.pos < output.size`, decoder has flushed everything it could.
-  But if `output.pos == output.size`, there might be some data left within internal buffers.,
-  In which case, call ZSTD_decompressStream() again to flush whatever remains in the buffer.
-  Note : with no additional input provided, amount of data flushed is necessarily <= ZSTD_BLOCKSIZE_MAX.
- @return : 0 when a frame is completely decoded and fully flushed,
-        or an error code, which can be tested using ZSTD_isError(),
-        or any other value > 0, which means there is still some decoding or flushing to do to complete current frame :
-                                the return value is a suggested next input size (just a hint for better latency)
-                                that will never request more than the remaining frame size.
- 
-

-
-
typedef ZSTD_DCtx ZSTD_DStream;  /**< DCtx and DStream are now effectively same object (>= v1.3.0) */
-


-
ZSTD_DStream management functions
ZSTD_DStream* ZSTD_createDStream(void);
-size_t ZSTD_freeDStream(ZSTD_DStream* zds);
-


-
Streaming decompression functions
size_t ZSTD_initDStream(ZSTD_DStream* zds);
-size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inBuffer* input);
-


-
size_t ZSTD_DStreamInSize(void);    /*!< recommended size for input buffer */
-


-
size_t ZSTD_DStreamOutSize(void);   /*!< recommended size for output buffer. Guarantee to successfully flush at least one complete block in all circumstances. */
-


-
ADVANCED AND EXPERIMENTAL FUNCTIONS
- The definitions in the following section are considered experimental.
- They are provided for advanced scenarios.
- They should never be used with a dynamic library, as prototypes may change in the future.
- Use them only in association with static linking.
- 
-

-
-
Candidate API for promotion to stable status
- The following symbols and constants form the "staging area" :
- they are considered to join "stable API" by v1.4.0.
- The proposal is written so that it can be made stable "as is",
- though it's still possible to suggest improvements.
- Staging is in fact last chance for changes,
- the API is locked once reaching "stable" status.
- 
-

-
-
int ZSTD_minCLevel(void);  /*!< minimum negative compression level allowed */
-


-
size_t ZSTD_findFrameCompressedSize(const void* src, size_t srcSize);
-
 `src` should point to the start of a ZSTD frame or skippable frame.
- `srcSize` must be >= first frame size
- @return : the compressed size of the first frame starting at `src`,
-           suitable to pass as `srcSize` to `ZSTD_decompress` or similar,
-        or an error code if input is invalid 
-


-
-
size_t ZSTD_sizeof_CCtx(const ZSTD_CCtx* cctx);
-size_t ZSTD_sizeof_DCtx(const ZSTD_DCtx* dctx);
-size_t ZSTD_sizeof_CStream(const ZSTD_CStream* zcs);
-size_t ZSTD_sizeof_DStream(const ZSTD_DStream* zds);
-size_t ZSTD_sizeof_CDict(const ZSTD_CDict* cdict);
-size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
-
  These functions give the _current_ memory usage of selected object.
-  Note that object memory usage can evolve (increase or decrease) over time. 
-


-
-
Advanced compression API

-
 
typedef enum { ZSTD_fast=1,
                ZSTD_dfast=2,
                ZSTD_greedy=3,
@@ -407,7 +206,10 @@ size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
 


 
typedef enum {
 
-    /* compression parameters */
+    /* compression parameters
+     * Note: When compressing with a ZSTD_CDict these parameters are superseded
+     * by the parameters used to construct the ZSTD_CDict. See ZSTD_CCtx_refCDict()
+     * for more info (superseded-by-cdict). */
     ZSTD_c_compressionLevel=100, /* Update all compression parameters according to pre-defined cLevel table
                               * Default level is ZSTD_CLEVEL_DEFAULT==3.
                               * Special: value 0 means default, which is controlled by ZSTD_CLEVEL_DEFAULT.
@@ -529,6 +331,7 @@ size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
      * ZSTD_c_format
      * ZSTD_c_forceMaxWindow
      * ZSTD_c_forceAttachDict
+     * ZSTD_c_literalCompressionMode
      * Because they are not stable, it's necessary to define ZSTD_STATIC_LINKING_ONLY to access them.
      * note : never ever use experimentalParam? names directly;
      *        also, the enums values themselves are unstable and can still change.
@@ -536,7 +339,8 @@ size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict);
      ZSTD_c_experimentalParam1=500,
      ZSTD_c_experimentalParam2=10,
      ZSTD_c_experimentalParam3=1000,
-     ZSTD_c_experimentalParam4=1001

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