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grep: refactor and simplify PCRE1 support 

The code used both a macro and a variable to keep track if JIT
support was desired and relied on the fact that a non JIT
enabled library will ignore a request for JIT compilation
(as defined by the second parameter of the call to pcre_study)

Cleanup the multiple levels of macros used and call pcre_study
with the right parameter after JIT support has been confirmed
and unless it was requested to be disabled with NO_LIBPCRE1_JIT

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Carlo Marcelo Arenas Belón 2019-08-25 11:22:23 -07:00 committed by Junio C Hamano
parent 8991da6a38
commit ff61681b46
2 changed files with 10 additions and 15 deletions
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16
grep.c
View File

@ -374,6 +374,7 @@ static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt)
const char *error;
int erroffset;
int options = PCRE_MULTILINE;
int study_options = 0;
if (opt->ignore_case) {
if (!opt->ignore_locale && has_non_ascii(p->pattern))
@ -388,15 +389,18 @@ static void compile_pcre1_regexp(struct grep_pat *p, const struct grep_opt *opt)
if (!p->pcre1_regexp)
compile_regexp_failed(p, error);
p->pcre1_extra_info = pcre_study(p->pcre1_regexp, GIT_PCRE_STUDY_JIT_COMPILE, &error);
if (!p->pcre1_extra_info && error)
die("%s", error);
#ifdef GIT_PCRE1_USE_JIT
#if defined(PCRE_CONFIG_JIT) && !defined(NO_LIBPCRE1_JIT)
pcre_config(PCRE_CONFIG_JIT, &p->pcre1_jit_on);
if (opt->debug)
fprintf(stderr, "pcre1_jit_on=%d\n", p->pcre1_jit_on);
if (p->pcre1_jit_on)
study_options = PCRE_STUDY_JIT_COMPILE;
#endif
p->pcre1_extra_info = pcre_study(p->pcre1_regexp, study_options, &error);
if (!p->pcre1_extra_info && error)
die("%s", error);
}
static int pcre1match(struct grep_pat *p, const char *line, const char *eol,
@ -425,7 +429,7 @@ static int pcre1match(struct grep_pat *p, const char *line, const char *eol,
static void free_pcre1_regexp(struct grep_pat *p)
{
pcre_free(p->pcre1_regexp);
#ifdef GIT_PCRE1_USE_JIT
#ifdef PCRE_CONFIG_JIT
if (p->pcre1_jit_on)
pcre_free_study(p->pcre1_extra_info);
else

9
grep.h
View File

@ -3,15 +3,6 @@
#include "color.h"
#ifdef USE_LIBPCRE1
#include <pcre.h>
#ifndef NO_LIBPCRE1_JIT
#ifdef PCRE_CONFIG_JIT
#define GIT_PCRE1_USE_JIT
#define GIT_PCRE_STUDY_JIT_COMPILE PCRE_STUDY_JIT_COMPILE
#endif
#endif
#ifndef GIT_PCRE_STUDY_JIT_COMPILE
#define GIT_PCRE_STUDY_JIT_COMPILE 0
#endif
#else
typedef int pcre;
typedef int pcre_extra;