database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-01-06 05:22:24 +03:00
Code Activity

Merge mysql.com:/home/cps/mysql/trees/mysql-4.1

Browse Source 
into  mysql.com:/home/cps/mysql/trees/mysql-5.0-virgin
This commit is contained in:
petr@mysql.com
2005-11-08 01:27:15 +03:00
parent ef415ceb14 03674968b3
commit 0f373f9501
4 changed files with 96 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

22
sql/examples/ha_tina.cc
View File

@@ -82,12 +82,16 @@ handlerton tina_hton= {
** TINA tables
*****************************************************************************/
/*
Used for sorting chains.
/*
Used for sorting chains with qsort().
*/
int sort_set (tina_set *a, tina_set *b)
{
return ( a->begin > b->begin ? 1 : ( a->begin < b->begin ? -1 : 0 ) );
/*
We assume that intervals do not intersect. So, it is enought to compare
any two points. Here we take start of intervals for comparison.
*/
return ( a->begin > b->begin ? -1 : ( a->begin < b->begin ? 1 : 0 ) );
}
static byte* tina_get_key(TINA_SHARE *share,uint *length,
@@ -186,7 +190,8 @@ static TINA_SHARE *get_share(const char *table_name, TABLE *table)
thr_lock_init(&share->lock);
pthread_mutex_init(&share->mutex,MY_MUTEX_INIT_FAST);
if ((share->data_file= my_open(data_file_name, O_RDWR, MYF(0))) == -1)
if ((share->data_file= my_open(data_file_name, O_RDWR|O_APPEND,
MYF(0))) == -1)
goto error2;
/* We only use share->data_file for writing, so we scan to the end to append */
@@ -797,13 +802,8 @@ int ha_tina::rnd_end()
qsort(chain, (size_t)(chain_ptr - chain), sizeof(tina_set), (qsort_cmp)sort_set);
for (ptr= chain; ptr < chain_ptr; ptr++)
{
/* We peek a head to see if this is the last chain */
if (ptr+1 == chain_ptr)
memmove(share->mapped_file + ptr->begin, share->mapped_file + ptr->end,
length - (size_t)ptr->end);
else
memmove((caddr_t)share->mapped_file + ptr->begin, (caddr_t)share->mapped_file + ptr->end,
(size_t)((ptr++)->begin - ptr->end));
memmove(share->mapped_file + ptr->begin, share->mapped_file + ptr->end,
length - (size_t)ptr->end);
length= length - (size_t)(ptr->end - ptr->begin);
}