[core] allocate pcre output vector on demand

allocate pcre output vector on demand for saved config captures
(similar to what is done in lighttpd for pcre2 support)

[core] pcre2 support (--with-pcre2)

x-ref:
"lighttpd: depends on obsolete pcre3 library"
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1000063

[core] use stack w/ pcre_exec unless save captures

use stack w/ pcre_exec unless saving captures from config conditions

reduce memory allocations per request where lighttpd.conf does not
contain ur

[core] use stack w/ pcre_exec unless save captures

use stack w/ pcre_exec unless saving captures from config conditions

reduce memory allocations per request where lighttpd.conf does not
contain url.redirect or url.rewrite rules where replacements reference
a match of the enclosing lighttpd.conf condition (e.g. %0, %1, %2 ...)

move cond_cache_t 'patterncount' to cond_match_t 'captures'
While cond_match_t is no longer sized power-2, it is generally expected
to be used much less frequently than before (which was all the time),
since it is now used only with url.redirect or url.rewrite with
references %0, %1, %2, ...

show more ...

[tests] combine tests into test_common.c

combine common components tests into test_common.c

combine into a single executable to reduce compilation/link redundancy

[multiple] de-dup file and piped loggers (fixes #3101)

de-dup file and piped loggers for error logs and access logs

x-ref:
"RFE: de-dup file and piped loggers"
https://redmine.lighttpd.net/issu

[multiple] de-dup file and piped loggers (fixes #3101)

de-dup file and piped loggers for error logs and access logs

x-ref:
"RFE: de-dup file and piped loggers"
https://redmine.lighttpd.net/issues/3101

show more ...

[multiple] PCRE w/ PCRE_STUDY_JIT_COMPILE (fixes #2361)

enabled by default
disable using server.feature-flags += ("server.pcre_jit" => "disable")

Available since pcre-8.20 (2011), and improved in p

[multiple] PCRE w/ PCRE_STUDY_JIT_COMPILE (fixes #2361)

enabled by default
disable using server.feature-flags += ("server.pcre_jit" => "disable")

Available since pcre-8.20 (2011), and improved in pcre-8.32 (2012),
PCRE_STUDY_JIT_COMPILE can greatly speed up repeated execution of PCRE
patterns. (https://zherczeg.github.io/sljit/pcre.html)

lighttpd continues to use pcre_exec() instead of pcre_jit_exec(),
even though doing so does not realize all of the performance increase
potentially available with PCRE_STUDY_JIT_COMPILE and pcre_jit_exec().

pcre_jit_exec() is available with PCRE 8.32 and later, if PCRE is
compiled with --enable-jit, but lighttpd does not currently use
pcre_jit_exec() since the PCRE library might not have been compiled
with --enable-jit (though this could be solved with a weak symbol).
Similarly, lighttpd does not currently configure the pcre_jit_stack.

(Using pcre_jit_exec() may be revisited in the future.)

x-ref:
"add support for pcre JIT"
https://redmine.lighttpd.net/issues/2361

show more ...

[tests] use buffer_eq_slen() for str comparison

(substitute buffer_eq_slen() for buffer_is_equal_string())

[multiple] extern log_epoch_secs

replace srv->cur_ts

[multiple] reduce direct use of srv->cur_ts

[core] split cond cache from cond matches

[core] store addtl data in pcre_keyvalue_buffer

reduce pointer chasing in keyvalue.c

mark keyvalue.h config routines as cold

[core] (const buffer *) in (struct burl_parts_t)

[core] struct log_error_st for error logging

[tests] t/test_keyvalue

create t/test_keyvalue to replace sparse tests in
tests/mod-redirect.t and tests/mod-rewrite.t
remove tests/mod-redirect.t and tests/mod-rewrite.t