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remove the call to dns_name_getlabel(), since the dns_name_toregion() macro

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is faster.
This commit is contained in:
Brian Wellington
2001-01-23 02:19:48 +00:00
parent 668eb43f1f
commit 5d18f1205a
1 changed files with 15 additions and 5 deletions
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20
lib/dns/compress.c
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@@ -15,7 +15,7 @@
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/ */
/* $Id: compress.c,v 1.43 2001/01/09 21:50:42 bwelling Exp $ */ /* $Id: compress.c,v 1.44 2001/01/23 02:19:48 bwelling Exp $ */
#define DNS_NAME_USEINLINE 1 #define DNS_NAME_USEINLINE 1
@@ -149,17 +149,26 @@ dns_compress_findglobal(dns_compress_t *cctx, dns_name_t *name,
return (ISC_TRUE); return (ISC_TRUE);
} }
static inline unsigned int
name_length(dns_name_t *name) {
isc_region_t r;
dns_name_toregion(name, &r);
return (r.length);
}
void void
dns_compress_add(dns_compress_t *cctx, dns_name_t *name, dns_name_t *prefix, dns_compress_add(dns_compress_t *cctx, dns_name_t *name, dns_name_t *prefix,
isc_uint16_t offset) isc_uint16_t offset)
{ {
dns_name_t tname, nname; dns_name_t tname, nname;
dns_label_t label;
unsigned int start; unsigned int start;
unsigned int n; unsigned int n;
unsigned int count; unsigned int count;
unsigned int hash; unsigned int hash;
dns_compressnode_t *node; dns_compressnode_t *node;
unsigned int length;
unsigned int tlength;
isc_uint16_t toffset;
REQUIRE(VALID_CCTX(cctx)); REQUIRE(VALID_CCTX(cctx));
REQUIRE(dns_name_isabsolute(name)); REQUIRE(dns_name_isabsolute(name));
@@ -172,12 +181,15 @@ dns_compress_add(dns_compress_t *cctx, dns_name_t *name, dns_name_t *prefix,
if (dns_name_isabsolute(prefix)) if (dns_name_isabsolute(prefix))
count--; count--;
start = 0; start = 0;
length = name_length(name);
while (count > 0) { while (count > 0) {
if (offset >= 0x4000) if (offset >= 0x4000)
break; break;
dns_name_getlabelsequence(name, start, n, &tname); dns_name_getlabelsequence(name, start, n, &tname);
hash = dns_name_hash(&tname, ISC_FALSE) % hash = dns_name_hash(&tname, ISC_FALSE) %
DNS_COMPRESS_TABLESIZE; DNS_COMPRESS_TABLESIZE;
tlength = name_length(&tname);
toffset = (isc_uint16_t)(offset + (length - tlength));
/* /*
* Look for the name in the hash bucket. If it's there, * Look for the name in the hash bucket. If it's there,
* we're done. * we're done.
@@ -200,12 +212,10 @@ dns_compress_add(dns_compress_t *cctx, dns_name_t *name, dns_name_t *prefix,
return; return;
} }
node->count = cctx->count++; node->count = cctx->count++;
node->offset = offset; node->offset = toffset;
dns_name_toregion(&tname, &node->r); dns_name_toregion(&tname, &node->r);
node->next = cctx->table[hash]; node->next = cctx->table[hash];
cctx->table[hash] = node; cctx->table[hash] = node;
dns_name_getlabel(&tname, 0, &label);
offset += label.length;
start++; start++;
n--; n--;
count--; count--;