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fixed mistypings in comments and spaces

pull/374/head
unknown 19 years ago
parent
d4512b20ec
commit
486fd0a22a
2 changed files with 26 additions and 27 deletions
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  1. 31
      storage/maria/ma_blockrec.c
  2. 4
      storage/maria/ma_loghandler.c

31
storage/maria/ma_blockrec.c
View File

@ -16,7 +16,7 @@
/*
Storage of records in block
Some clarifactions about the abbrev used:
Some clarifications about the abbrev used:
NULL fields -> Fields that may have contain a NULL value.
Not null fields -> Fields that may not contain a NULL value.
@ -57,20 +57,20 @@
NO 1 byte Number of row/tail entries on page
empty space 2 bytes Empty space on page
The upmost bit in PAGE_TYPE is set to 1 if the data on the page
The most significant bit in PAGE_TYPE is set to 1 if the data on the page
can be compacted to get more space. (PAGE_CAN_BE_COMPACTED)
Row data
Row directory of NO entries, that consist of the following for each row
(in reverse order; ie, first record is stored last):
(in reverse order; i.e., first record is stored last):
Position 2 bytes Position of row on page
Length 2 bytes Length of entry
For Position and Length, the 1 upmost bit of the position and the 1
upmost bit of the length could be used for some states of the row (in
other words, we should try to keep these reserved)
For Position and Length, the 1 most significant bit of the position and
the 1 most significant bit of the length could be used for some states of
the row (in other words, we should try to keep these reserved)
eof flag 1 byte Reserved for full page read testing. (Ie, did the
previous write get the whole block on disk.
@ -167,7 +167,7 @@
efficiently. On update and delete we would add TRANSID (if it was an old
committed row) and VER_PTR to
the row. On row page compaction we can easily detect rows where
TRANSID was committed before the the longest running transaction
TRANSID was committed before the longest running transaction
started and we can then delete TRANSID and VER_PTR from the row to
gain more space.
@ -279,12 +279,12 @@ typedef struct st_maria_extent_cursor
my_off_t page;
/* How many pages in the page region */
uint page_count;
/* Total number of extents (ie, entries in the 'extent' slot) */
/* Total number of extents (i.e., entries in the 'extent' slot) */
uint extent_count;
/* <> 0 if current extent is a tail page; Set while using cursor */
uint tail;
/*
<> 1 if we are working on the first extent (ie, the one that is store in
<> 1 if we are working on the first extent (i.e., the one that is store in
the row header, not an extent that is stored as part of the row data).
*/
my_bool first_extent;
@ -809,7 +809,7 @@ static void compact_page(byte *buff, uint block_size, uint rownr,
uint length= (next_free_pos - start_of_found_block);
/*
There was empty space before this and prev block
Check if we have to move prevous block up to page start
Check if we have to move previous block up to page start
*/
if (page_pos != start_of_found_block)
{
@ -817,7 +817,7 @@ static void compact_page(byte *buff, uint block_size, uint rownr,
memmove(buff + page_pos, buff + start_of_found_block, length);
}
page_pos+= length;
/* next continous block starts here */
/* next continuous block starts here */
start_of_found_block= offset;
diff= offset - page_pos;
}
@ -858,7 +858,7 @@ static void compact_page(byte *buff, uint block_size, uint rownr,
memmove(buff + page_pos - length, buff + next_free_pos, length);
}
page_pos-= length;
/* next continous block starts here */
/* next continuous block starts here */
end_of_found_block= row_end;
diff= page_pos - row_end;
}
@ -952,7 +952,7 @@ static my_bool get_head_or_tail_page(MARIA_HA *info,
res->data= (buff + PAGE_HEADER_SIZE);
res->dir= res->data + res->length;
res->offset= 0;
/* Store poistion to the first row */
/* Store position to the first row */
int2store(res->dir, PAGE_HEADER_SIZE);
DBUG_ASSERT(length <= res->length);
}
@ -1487,7 +1487,7 @@ static my_bool write_block_record(MARIA_HA *info, const byte *record,
for (end_block= block + block->sub_blocks; block < end_block; block++)
{
/*
Set only a bit, to not cause bitmap code to belive a block is full
Set only a bit, to not cause bitmap code to believe a block is full
when there is still a lot of entries in it
*/
block->used|= BLOCKUSED_USED;
@ -1535,7 +1535,7 @@ static my_bool write_block_record(MARIA_HA *info, const byte *record,
end_block= head_block + head_block->sub_blocks;
/*
Loop until we have find a block bigger than we need or
we find the the empty page block.
we find the empty page block.
*/
while (data_length >= (length= (cur_block->page_count *
FULL_PAGE_SIZE(block_size))) &&
@ -1585,7 +1585,6 @@ static my_bool write_block_record(MARIA_HA *info, const byte *record,
TODO:
If there is enough space on the following tail block, use
this instead of creating a new tail block.
*/
DBUG_ASSERT(cur_block[1].page_count == 0);
if (cur_block->page_count == 1)

4
storage/maria/ma_loghandler.c
View File

@ -424,7 +424,7 @@ static File open_logfile_by_number_no_cache(uint32 file_no)
char path[FN_REFLEN];
DBUG_ENTER("open_logfile_by_number_no_cache");
/* Todo: add O_DIRECT to open flags (when buffer is aligned) */
/* TODO: add O_DIRECT to open flags (when buffer is aligned) */
if ((file= my_open(translog_filename_by_fileno(file_no, path),
O_CREAT | O_BINARY | O_RDWR,
MYF(MY_WME))) < 0)
@ -3180,7 +3180,7 @@ static byte *translog_get_LSN_from_diff(LSN base_lsn, byte *src, byte *dst)
(ulong) LSN_OFFSET(base_lsn),
(ulong) src, (ulong) dst));
first_byte= *((uint8*) src);
code= first_byte >> 6; /* Length in 2 upmost bits */
code= first_byte >> 6; /* Length is in 2 most significant bits */
first_byte&= 0x3F;
src++; /* Skip length + encode */
file_no= LSN_FILE_NO(base_lsn); /* Assume relative */

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