github_mirrors/vectorscan
3
0
Fork 1
mirror of https://github.com/VectorCamp/vectorscan.git synced 2025-06-28 16:41:01 +03:00
Code Issues Packages Projects Releases Wiki Activity

changelog: updates for 4.2 release

Browse Source
This commit is contained in:
Justin Viiret 2016-05-04 17:36:46 +10:00 committed by Matthew Barr
parent d7466ff840
commit 8b0e285f09
1 changed files with 34 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
CHANGELOG.md
View File

@ -2,6 +2,40 @@
This is a list of notable changes to Hyperscan, in reverse chronological order. This is a list of notable changes to Hyperscan, in reverse chronological order.
## [4.2.0] 2016-05-31
- Introduce an interpreter for many complex actions to replace the use of
internal reports within the core of Hyperscan (the "Rose" engine). This
improves scanning performance and reduces database size for many pattern
sets.
- Many enhancements to the acceleration framework used by NFA and DFA engines,
including more flexible multibyte implementations and more AVX2 support. This
improves scanning performance for many pattern sets.
- Improved prefiltering support for complex patterns containing very large
bounded repeats (`R{M,N}` with large `N`).
- Improve scanning performance of pattern sets with a very large number of
EOD-anchored patterns.
- Improve scanning performance of large pattern sets that use the
`HS_FLAG_SINGLEMATCH` flag.
- Improve scanning performance of pattern sets that contain a single literal by
improving the "Noodle" literal matcher.
- Small reductions in total stream state for many pattern sets.
- Improve runtime detection of AVX2 support.
- Disable -Werror for release builds, in order to behave better for packagers
and users with different compiler combinations than those that we test.
- Improve support for building on Windows with MSVC 2015 (github issue #14).
Support for Hyperscan on Windows is still experimental.
- Small updates to fix warnings identified by Coverity.
- Remove Python codegen for the "FDR" and "Teddy" literal matchers. These are
now implemented directly in C code.
- Remove the specialist "Sidecar" engine in favour of using our more general
repeat engines.
- New API function: add the `hs_expression_ext_info()` function. This is a
variant of `hs_expression_info()` that can accept patterns with extended
parameters.
- New API error value: add the `HS_SCRATCH_IN_USE` error, which is returned
when Hyperscan detects that a scratch region is already in use on entry to an
API function.
## [4.1.0] 2015-12-18 ## [4.1.0] 2015-12-18
- Update version of PCRE used by testing tools as a syntax and semantic - Update version of PCRE used by testing tools as a syntax and semantic
reference to PCRE 8.38. reference to PCRE 8.38.