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Fixed false assert which conrol sequental writing to disk in

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case of opening and closing loghandler without writing
 sometrhing in it.
Fixed comment (sent_to_file was renamed to sent_to disk)
Write log during shutdown in natural order.
This commit is contained in:
unknown 2008-01-30 22:12:15 +02:00
parent 211a9e72a9
commit 25bccab91c
1 changed files with 21 additions and 7 deletions
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28
storage/maria/ma_loghandler.c
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@ -250,10 +250,12 @@ struct st_translog_descriptor
LSN flushed;
/* Last LSN sent to the disk (but maybe not written yet) */
LSN sent_to_disk;
/* Horizon from which log started after initialization */
TRANSLOG_ADDRESS log_start;
TRANSLOG_ADDRESS previous_flush_horizon;
/* All what is after this address is not sent to disk yet */
TRANSLOG_ADDRESS in_buffers_only;
/* protection of sent_to_file and in_buffers_only */
/* protection of sent_to_disk and in_buffers_only */
pthread_mutex_t sent_to_disk_lock;
/*
Protect flushed (see above) and for flush serialization (will
@ -2054,13 +2056,20 @@ static void translog_set_sent_to_disk(LSN lsn, TRANSLOG_ADDRESS in_buffers)
DBUG_ENTER("translog_set_sent_to_disk");
pthread_mutex_lock(&log_descriptor.sent_to_disk_lock);
DBUG_PRINT("enter", ("lsn: (%lu,0x%lx) in_buffers: (%lu,0x%lx) "
"in_buffers_only: (%lu,0x%lx) "
"in_buffers_only: (%lu,0x%lx) start: (%lu,0x%lx) "
"sent_to_disk: (%lu,0x%lx)",
LSN_IN_PARTS(lsn),
LSN_IN_PARTS(in_buffers),
LSN_IN_PARTS(log_descriptor.log_start),
LSN_IN_PARTS(log_descriptor.in_buffers_only),
LSN_IN_PARTS(log_descriptor.sent_to_disk)));
DBUG_ASSERT(cmp_translog_addr(lsn, log_descriptor.sent_to_disk) >= 0);
/*
We write sequentially (first part of following assert) but we rewrite
the same page in case we started mysql and shut it down immediately
(second part of the following assert)
*/
DBUG_ASSERT(cmp_translog_addr(lsn, log_descriptor.sent_to_disk) >= 0 ||
cmp_translog_addr(lsn, log_descriptor.log_start) < 0);
log_descriptor.sent_to_disk= lsn;
/* LSN_IMPOSSIBLE == 0 => it will work for very first time */
if (cmp_translog_addr(in_buffers, log_descriptor.in_buffers_only) > 0)
@ -3646,7 +3655,7 @@ my_bool translog_init_with_table(const char *directory,
}
/* all LSNs that are on disk are flushed */
log_descriptor.sent_to_disk=
log_descriptor.log_start= log_descriptor.sent_to_disk=
log_descriptor.flushed= log_descriptor.horizon;
log_descriptor.in_buffers_only= log_descriptor.bc.buffer->offset;
log_descriptor.max_lsn= LSN_IMPOSSIBLE; /* set to 0 */
@ -3780,7 +3789,7 @@ my_bool translog_init_with_table(const char *directory,
"reading record header: (%lu,0x%lx) len: %d",
LSN_IN_PARTS(last_lsn), len));
if (readonly)
log_descriptor.horizon= last_lsn;
log_descriptor.log_start= log_descriptor.horizon= last_lsn;
else if (translog_truncate_log(last_lsn))
{
translog_free_record_header(&rec);
@ -3805,7 +3814,8 @@ my_bool translog_init_with_table(const char *directory,
LSN_IN_PARTS(rec.lsn),
len));
if (readonly)
log_descriptor.horizon= last_lsn;
log_descriptor.log_start= log_descriptor.horizon= last_lsn;
else if (translog_truncate_log(last_lsn))
{
translog_free_record_header(&rec);
@ -3869,11 +3879,13 @@ void translog_destroy()
{
TRANSLOG_FILE **file;
uint i;
uint8 current_buffer;
DBUG_ENTER("translog_destroy");
DBUG_ASSERT(translog_status == TRANSLOG_OK ||
translog_status == TRANSLOG_READONLY);
translog_lock();
current_buffer= log_descriptor.bc.buffer_no;
translog_status= (translog_status == TRANSLOG_READONLY ?
TRANSLOG_UNINITED :
TRANSLOG_SHUTDOWN);
@ -3883,7 +3895,9 @@ void translog_destroy()
for (i= 0; i < TRANSLOG_BUFFERS_NO; i++)
{
struct st_translog_buffer *buffer= log_descriptor.buffers + i;
struct st_translog_buffer *buffer= (log_descriptor.buffers +
((i + current_buffer + 1) %
TRANSLOG_BUFFERS_NO));
translog_buffer_destroy(buffer);
}
translog_status= TRANSLOG_UNINITED;