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Merge damien-katzs-computer.local:/Users/dkatz/mysql50

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into  damien-katzs-computer.local:/Users/dkatz/mysql51


sql/filesort.cc:
  Auto merged
storage/myisam/sort.c:
  Auto merged
This commit is contained in:
unknown 2007-05-17 16:18:35 -04:00
commit 4684399a30
2 changed files with 17 additions and 7 deletions
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21
sql/filesort.cc
View file

@ -255,7 +255,8 @@ ha_rows filesort(THD *thd, TABLE *table, SORT_FIELD *sortorder, uint s_length,
open_cached_file(outfile,mysql_tmpdir,TEMP_PREFIX,READ_RECORD_BUFFER,
MYF(MY_WME)))
goto err;
reinit_io_cache(outfile,WRITE_CACHE,0L,0,0);
if (reinit_io_cache(outfile,WRITE_CACHE,0L,0,0))
goto err;
/*
Use also the space previously used by string pointers in sort_buffer
@ -375,6 +376,8 @@ static BUFFPEK *read_buffpek_from_file(IO_CACHE *buffpek_pointers, uint count)
ulong length;
BUFFPEK *tmp;
DBUG_ENTER("read_buffpek_from_file");
if (count > ULONG_MAX/sizeof(BUFFPEK))
return 0; /* sizeof(BUFFPEK)*count will overflow */
tmp=(BUFFPEK*) my_malloc(length=sizeof(BUFFPEK)*count, MYF(MY_WME));
if (tmp)
{
@ -625,6 +628,9 @@ write_keys(SORTPARAM *param, register uchar **sort_keys, uint count,
open_cached_file(tempfile, mysql_tmpdir, TEMP_PREFIX, DISK_BUFFER_SIZE,
MYF(MY_WME)))
goto err; /* purecov: inspected */
/* check we won't have more buffpeks than we can possibly keep in memory */
if (my_b_tell(buffpek_pointers) + sizeof(BUFFPEK) > (ulonglong)ULONG_MAX)
goto err;
buffpek.file_pos= my_b_tell(tempfile);
if ((ha_rows) count > param->max_rows)
count=(uint) param->max_rows; /* purecov: inspected */
@ -983,7 +989,7 @@ static bool save_index(SORTPARAM *param, uchar **sort_keys, uint count,
int merge_many_buff(SORTPARAM *param, uchar *sort_buffer,
BUFFPEK *buffpek, uint *maxbuffer, IO_CACHE *t_file)
{
register int i;
register uint i;
IO_CACHE t_file2,*from_file,*to_file,*temp;
BUFFPEK *lastbuff;
DBUG_ENTER("merge_many_buff");
@ -998,14 +1004,16 @@ int merge_many_buff(SORTPARAM *param, uchar *sort_buffer,
from_file= t_file ; to_file= &t_file2;
while (*maxbuffer >= MERGEBUFF2)
{
reinit_io_cache(from_file,READ_CACHE,0L,0,0);
reinit_io_cache(to_file,WRITE_CACHE,0L,0,0);
if (reinit_io_cache(from_file,READ_CACHE,0L,0,0))
goto cleanup;
if (reinit_io_cache(to_file,WRITE_CACHE,0L,0,0))
goto cleanup;
lastbuff=buffpek;
for (i=0 ; i <= (int) *maxbuffer-MERGEBUFF*3/2 ; i+=MERGEBUFF)
for (i=0 ; i <= *maxbuffer-MERGEBUFF*3/2 ; i+=MERGEBUFF)
{
if (merge_buffers(param,from_file,to_file,sort_buffer,lastbuff++,
buffpek+i,buffpek+i+MERGEBUFF-1,0))
break; /* purecov: inspected */
goto cleanup;
}
if (merge_buffers(param,from_file,to_file,sort_buffer,lastbuff++,
buffpek+i,buffpek+ *maxbuffer,0))
@ -1017,6 +1025,7 @@ int merge_many_buff(SORTPARAM *param, uchar *sort_buffer,
setup_io_cache(to_file);
*maxbuffer= (uint) (lastbuff-buffpek)-1;
}
cleanup:
close_cached_file(to_file); // This holds old result
if (to_file == t_file)
{

3
storage/myisam/sort.c
View file

@ -773,7 +773,7 @@ static int NEAR_F merge_many_buff(MI_SORT_PARAM *info, uint keys,
{
if (merge_buffers(info,keys,from_file,to_file,sort_keys,lastbuff++,
buffpek+i,buffpek+i+MERGEBUFF-1))
break; /* purecov: inspected */
goto cleanup;
}
if (merge_buffers(info,keys,from_file,to_file,sort_keys,lastbuff++,
buffpek+i,buffpek+ *maxbuffer))
@ -783,6 +783,7 @@ static int NEAR_F merge_many_buff(MI_SORT_PARAM *info, uint keys,
temp=from_file; from_file=to_file; to_file=temp;
*maxbuffer= (int) (lastbuff-buffpek)-1;
}
cleanup:
close_cached_file(to_file); /* This holds old result */
if (to_file == t_file)
*t_file=t_file2; /* Copy result file */