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Custom number parser to speed up config parsing

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The glibc's generic parser is slow due to its versatility. Specialized
parsers for base-10 and base-16 are much faster and we don't use other
bases.
This commit is contained in:
Maria Matejka
2019-02-25 23:28:36 +01:00
parent 99911873a1
commit 2915e711f7
5 changed files with 74 additions and 9 deletions
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14
conf/cf-lex.l
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@@ -168,7 +168,7 @@ WHITE [ \t]
char *e;
errno = 0;
l = strtoul(yytext, &e, 10);
l = bstrtoul(yytext, &e, 10);
if (e && (*e != ':') || (errno == ERANGE) || (l >> 32))
cf_error("ASN out of range");
@@ -186,7 +186,7 @@ WHITE [ \t]
}
errno = 0;
l = strtoul(e+1, &e, 10);
l = bstrtoul(e+1, &e, 10);
if (e && *e || (errno == ERANGE) || (l >> len2))
cf_error("Number out of range");
cf_lval.i64 |= l;
@@ -213,13 +213,13 @@ WHITE [ \t]
}
errno = 0;
l = strtoul(yytext+2, &e, 10);
l = bstrtoul(yytext+2, &e, 10);
if (e && (*e != ':') || (errno == ERANGE) || (l >> len1))
cf_error("ASN out of range");
cf_lval.i64 |= ((u64) l) << len2;
errno = 0;
l = strtoul(e+1, &e, 10);
l = bstrtoul(e+1, &e, 10);
if (e && *e || (errno == ERANGE) || (l >> len2))
cf_error("Number out of range");
cf_lval.i64 |= l;
@@ -241,7 +241,7 @@ WHITE [ \t]
cf_lval.i64 |= ((u64) ip4_to_u32(ip4)) << 16;
errno = 0;
l = strtoul(e, &e, 10);
l = bstrtoul(e, &e, 10);
if (e && *e || (errno == ERANGE) || (l >> 16))
cf_error("Number out of range");
cf_lval.i64 |= l;
@@ -265,7 +265,7 @@ WHITE [ \t]
char *e;
unsigned long int l;
errno = 0;
l = strtoul(yytext+2, &e, 16);
l = bstrtoul(yytext+2, &e, 16);
if (e && *e || errno == ERANGE || (unsigned long int)(unsigned int) l != l)
cf_error("Number out of range");
cf_lval.i = l;
@@ -276,7 +276,7 @@ WHITE [ \t]
char *e;
unsigned long int l;
errno = 0;
l = strtoul(yytext, &e, 10);
l = bstrtoul(yytext, &e, 10);
if (e && *e || errno == ERANGE || (unsigned long int)(unsigned int) l != l)
cf_error("Number out of range");
cf_lval.i = l;