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who would have guessed that the % operator in findtoken would show up so prominently in a code profile?

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This commit is contained in:
Enno Rehling 2006-01-24 21:44:20 +00:00
parent 10f53b6ae8
commit 779c790f6d
1 changed files with 25 additions and 2 deletions
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23
src/common/util/umlaut.c
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@ -36,6 +36,21 @@ typedef struct tref {
#define LEAF 1 /* leaf node for a word. always matches */
#define SHARED 2 /* at least two words share the node */
#if NODEHASHSIZE == 7
/* lookup table, making c % 7 faster for chars. is this sick or what? */
static int divc7[256] = {
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,0,1,2,3,4,5,6,
0,1,2,3 };
#endif
void
addtoken(tnode * root, const char* str, variant id)
{
@ -60,7 +75,11 @@ addtoken(tnode * root, const char* str, variant id)
int index, i = 0;
char c = *str;
if (c<'a' || c>'z') c = (char)tolower((unsigned char)c);
#if NODEHASHSIZE == 7
index = divc7[(unsigned char)c];
#else
index = ((unsigned char)c) % NODEHASHSIZE;
#endif
next = root->next[index];
if (!(root->flags & LEAF)) root->id = id;
while (next && next->c != c) next = next->nexthash;
@ -114,7 +133,11 @@ findtoken(const tnode * tk, const char * str, variant* result)
/* if (c<'a' || c>'z') c = (char)tolower((unsigned char)c); */
#if NODEHASHSIZE == 7
index = divc7[(unsigned char)c];
#else
index = ((unsigned char)c) % NODEHASHSIZE;
#endif
ref = tk->next[index];
while (ref && ref->c!=c) ref = ref->nexthash;
++str;