Optimization #1046
closedreplace pcre_get_substring with pcre_copy_substring
Description
The get variant returns newly alloc'd memory, which is unnecessary most of the time.
We should replace the get usage in all rule parsing code.
Updated by Victor Julien almost 11 years ago
- Priority changed from Normal to Low
- Target version changed from 2.0beta2 to 2.0rc1
- % Done changed from 10 to 20
There are still quite a few places where this is used, the hot spots have been addressed.
Updated by Victor Julien almost 11 years ago
- Target version changed from 2.0rc1 to 3.0RC2
Updated by Victor Julien over 9 years ago
- Target version changed from 3.0RC2 to 70
Updated by Victor Julien almost 9 years ago
- Assignee changed from Victor Julien to Andreas Herz
- Priority changed from Low to Normal
Fixes part of the leaks listed here: #1659#note-1
Updated by Andreas Herz over 8 years ago
You changed several spots but you left "SC_ERR_PCRE_GET_SUBSTRING" for SCLogError, is this intended?
I also saw the discussion at https://github.com/inliniac/suricata/pull/900 so is there any usecase where we have some sort of advantage when we still use pcre_get_substring?
Updated by Victor Julien over 8 years ago
Andreas Herz wrote:
You changed several spots but you left "SC_ERR_PCRE_GET_SUBSTRING" for SCLogError, is this intended?
I didn't really care about being that specific, but feel free to add one for copy as well (append to enum to keep existing values the contant)
I also saw the discussion at https://github.com/inliniac/suricata/pull/900 so is there any usecase where we have some sort of advantage when we still use pcre_get_substring?
Yeah if you need a new allocation of what the regex captures then _get_substring would be OK.
Updated by Andreas Herz about 6 years ago
- Assignee changed from Andreas Herz to Anonymous
Updated by Victor Julien over 5 years ago
These files are left:
detect-base64-decode.c
detect-bytetest.c
detect-dce-opnum.c
detect-detection-filter.c
detect-fast-pattern.c
detect-filesize.c
detect-filestore.c
detect-flags.c
detect-flowint.c
detect-flowvar.c
detect-fragbits.c
detect-fragoffset.c
detect-icmp-id.c
detect-icmp-seq.c
detect-icode.c
detect-ipproto.c
detect-iprep.c
detect-isdataat.c
detect-itype.c
detect-mark.c
detect-modbus.c
detect-pcre.c
detect-pktvar.c
detect-reference.c
detect-rpc.c
detect-ssh-proto-version.c
detect-ssh-software-version.c
detect-ssl-state.c
detect-ssl-version.c
detect-stream_size.c
detect-tag.c
detect-target.c
detect-template2.c
detect-threshold.c
detect-tls.c
detect-tls-version.c
detect-urilen.c
util-host-info.c
util-threshold-config.c
Of these, threshold, tag, urilen, reference, isdataat, bytetest and flags are the most commonly used.
Updated by Victor Julien over 4 years ago
- Related to Bug #3566: rules: minor memory leak involving pcre_get_substring added
Updated by Victor Julien about 4 years ago
- Target version changed from 70 to TBD