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Small optimization to use the already opened master lookup index.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@9586 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Miika Pekkarinen 2006-04-09 20:00:49 +00:00
parent bd39c25586
commit 93ed0a7bb0
1 changed files with 6 additions and 22 deletions
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26
apps/tagcache.c
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@ -382,9 +382,7 @@ static bool check_against_clause(long numeric, const char *str,
static bool build_lookup_list(struct tagcache_search *tcs)
{
struct tagcache_header header;
struct index_entry entry;
int masterfd;
int i;
tcs->seek_list_count = 0;
@ -399,6 +397,7 @@ static bool build_lookup_list(struct tagcache_search *tcs)
if (tcs->seek_list_count == SEEK_LIST_SIZE)
break ;
/* Go through all filters.. */
for (j = 0; j < tcs->filter_count; j++)
{
if (hdr->indices[i].tag_seek[tcs->filter_tag[j]] !=
@ -409,6 +408,7 @@ static bool build_lookup_list(struct tagcache_search *tcs)
if (j < tcs->filter_count)
continue ;
/* Go through all conditional clauses. */
for (j = 0; j < tcs->clause_count; j++)
{
int seek = hdr->indices[i].tag_seek[tcs->clause[j]->tag];
@ -450,31 +450,16 @@ static bool build_lookup_list(struct tagcache_search *tcs)
}
#endif
masterfd = open(TAGCACHE_FILE_MASTER, O_RDONLY);
if (masterfd < 0)
{
logf("cannot open master index");
return false;
}
/* Load the header. */
if (read(masterfd, &header, sizeof(struct tagcache_header)) !=
sizeof(struct tagcache_header) || header.magic != TAGCACHE_MAGIC)
{
logf("read error");
close(masterfd);
return false;
}
lseek(masterfd, tcs->seek_pos * sizeof(struct index_entry) +
lseek(tcs->masterfd, tcs->seek_pos * sizeof(struct index_entry) +
sizeof(struct tagcache_header), SEEK_SET);
while (read(masterfd, &entry, sizeof(struct index_entry)) ==
while (read(tcs->masterfd, &entry, sizeof(struct index_entry)) ==
sizeof(struct index_entry))
{
if (tcs->seek_list_count == SEEK_LIST_SIZE)
break ;
/* Go through all filters.. */
for (i = 0; i < tcs->filter_count; i++)
{
if (entry.tag_seek[tcs->filter_tag[i]] != tcs->filter_seek[i])
@ -531,7 +516,6 @@ static bool build_lookup_list(struct tagcache_search *tcs)
}
}
close(masterfd);
return tcs->seek_list_count > 0;
}