diff options
| author | Tatsuo Ishii <ishii@postgresql.org> | 2003-02-06 00:00:24 +0000 |
|---|---|---|
| committer | Tatsuo Ishii <ishii@postgresql.org> | 2003-02-06 00:00:24 +0000 |
| commit | de42a5f53d9bb2fda1e6be9746023e56946c8b1f (patch) | |
| tree | 74407f15da2d732c38f56f5edb41d10634288cce /src/backend/regex/regcomp.c | |
| parent | 47729caf2d9a88a6aa5f0f7b609b95bf149c105b (diff) | |
Fix regexp slowness reported by Wade Klaver.
Diffstat (limited to 'src/backend/regex/regcomp.c')
| -rw-r--r-- | src/backend/regex/regcomp.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/backend/regex/regcomp.c b/src/backend/regex/regcomp.c index 71e69dea618..06c99139770 100644 --- a/src/backend/regex/regcomp.c +++ b/src/backend/regex/regcomp.c @@ -178,6 +178,9 @@ pg_regcomp(regex_t *preg, const char *pattern, int cflags) int i; size_t len; pg_wchar *wcp; + size_t csetsize; + + csetsize = (pg_database_encoding_max_length() == 1)?(SCHAR_MAX - SCHAR_MIN + 1):NC; if (cclasses == NULL) cclasses = cclass_init(); @@ -211,7 +214,7 @@ pg_regcomp(regex_t *preg, const char *pattern, int cflags) /* do the mallocs early so failure handling is easy */ g = (struct re_guts *) malloc(sizeof(struct re_guts) + - (NC - 1) * sizeof(cat_t)); + (csetsize - 1) * sizeof(cat_t)); if (g == NULL) return REG_ESPACE; p->ssize = len / (size_t) 2 *(size_t) 3 + (size_t) 1; /* ugh */ @@ -235,7 +238,7 @@ pg_regcomp(regex_t *preg, const char *pattern, int cflags) p->pbegin[i] = 0; p->pend[i] = 0; } - g->csetsize = NC; + g->csetsize = csetsize; g->sets = NULL; g->setbits = NULL; g->ncsets = 0; @@ -248,7 +251,7 @@ pg_regcomp(regex_t *preg, const char *pattern, int cflags) g->nsub = 0; g->ncategories = 1; /* category 0 is "everything else" */ g->categories = &g->catspace[-(CHAR_MIN)]; - memset((char *) g->catspace, 0, NC * sizeof(cat_t)); + memset((char *) g->catspace, 0, csetsize * sizeof(cat_t)); g->backrefs = 0; /* do it */ |