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InnoDB cleanup: Remove unused code for online backup

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This commit is contained in:
marko@hundin.mysql.fi 2004-05-26 10:45:37 +03:00
parent 92c15122da
commit 9a5dafba83
6 changed files with 8 additions and 351 deletions
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35
innobase/include/log0log.h
View File

@ -114,20 +114,6 @@ dulint
log_get_lsn(void);
/*=============*/
/* out: current lsn */
/****************************************************************************
Gets the online backup lsn. */
UNIV_INLINE
dulint
log_get_online_backup_lsn_low(void);
/*===============================*/
/****************************************************************************
Gets the online backup state. */
UNIV_INLINE
ibool
log_get_online_backup_state_low(void);
/*=================================*/
/* out: online backup state, the caller must
own the log_sys mutex */
/**********************************************************
Initializes the log. */
@ -326,20 +312,6 @@ log_archived_file_name_gen(
char* buf, /* in: buffer where to write */
ulint id, /* in: group id */
ulint file_no);/* in: file number */
/**********************************************************
Switches the database to the online backup state. */
ulint
log_switch_backup_state_on(void);
/*============================*/
/* out: DB_SUCCESS or DB_ERROR */
/**********************************************************
Switches the online backup state off. */
ulint
log_switch_backup_state_off(void);
/*=============================*/
/* out: DB_SUCCESS or DB_ERROR */
/************************************************************************
Checks that there is enough free space in the log to start a new query step.
Flushes the log buffer or makes a new checkpoint if necessary. NOTE: this
@ -871,13 +843,6 @@ struct log_struct{
os_event_t archiving_on; /* if archiving has been stopped,
a thread can wait for this event to
become signaled */
/* Fields involved in online backups */
ibool online_backup_state;
/* TRUE if the database is in the
online backup state */
dulint online_backup_lsn;
/* lsn when the state was changed to
the online backup state */
};
#define LOG_ARCH_ON 71

36
innobase/include/log0log.ic
View File

@ -318,8 +318,7 @@ log_reserve_and_write_fast(
data_len = len + log->buf_free % OS_FILE_LOG_BLOCK_SIZE;
if (log->online_backup_state
|| (data_len >= OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE)) {
if (data_len >= OS_FILE_LOG_BLOCK_SIZE - LOG_BLOCK_TRL_SIZE) {
/* The string does not fit within the current log block
or the log block would become full */
@ -403,36 +402,3 @@ log_free_check(void)
log_check_margins();
}
}
/****************************************************************************
Gets the online backup lsn. */
UNIV_INLINE
dulint
log_get_online_backup_lsn_low(void)
/*===============================*/
/* out: online_backup_lsn, the caller must
own the log_sys mutex */
{
#ifdef UNIV_SYNC_DEBUG
ut_ad(mutex_own(&(log_sys->mutex)));
#endif /* UNIV_SYNC_DEBUG */
ut_ad(log_sys->online_backup_state);
return(log_sys->online_backup_lsn);
}
/****************************************************************************
Gets the online backup state. */
UNIV_INLINE
ibool
log_get_online_backup_state_low(void)
/*=================================*/
/* out: online backup state, the caller must
own the log_sys mutex */
{
#ifdef UNIV_SYNC_DEBUG
ut_ad(mutex_own(&(log_sys->mutex)));
#endif /* UNIV_SYNC_DEBUG */
return(log_sys->online_backup_state);
}

12
innobase/include/mtr0mtr.h
View File

@ -82,7 +82,7 @@ flag value must give the length also! */
predefined minimum record */
#define MLOG_IBUF_BITMAP_INIT ((byte)27) /* initialize an ibuf bitmap
page */
#define MLOG_FULL_PAGE ((byte)28) /* full contents of a page */
/*#define MLOG_FULL_PAGE ((byte)28) full contents of a page */
#define MLOG_INIT_FILE_PAGE ((byte)29) /* this means that a file page
is taken into use and the prior
contents of the page should be
@ -230,16 +230,6 @@ mtr_memo_release(
mtr_t* mtr, /* in: mtr */
void* object, /* in: object */
ulint type); /* in: object type: MTR_MEMO_S_LOCK, ... */
/****************************************************************
Parses a log record which contains the full contents of a page. */
byte*
mtr_log_parse_full_page(
/*====================*/
/* out: end of log record or NULL */
byte* ptr, /* in: buffer */
byte* end_ptr,/* in: buffer end */
page_t* page); /* in: page or NULL */
/**************************************************************
Checks if memo contains the given item. */
UNIV_INLINE

64
innobase/log/log0log.c
View File

@ -793,11 +793,7 @@ log_init(void)
log_sys->archiving_on = os_event_create(NULL);
/*----------------------------*/
log_sys->online_backup_state = FALSE;
/*----------------------------*/
log_block_init(log_sys->buf, log_sys->lsn);
log_block_set_first_rec_group(log_sys->buf, LOG_BLOCK_HDR_SIZE);
@ -2973,66 +2969,6 @@ loop:
mutex_exit(&(log_sys->mutex));
}
/**********************************************************
Switches the database to the online backup state. */
ulint
log_switch_backup_state_on(void)
/*============================*/
/* out: DB_SUCCESS or DB_ERROR */
{
dulint backup_lsn;
mutex_enter(&(log_sys->mutex));
if (log_sys->online_backup_state) {
/* The database is already in that state */
mutex_exit(&(log_sys->mutex));
return(DB_ERROR);
}
log_sys->online_backup_state = TRUE;
backup_lsn = log_sys->lsn;
log_sys->online_backup_lsn = backup_lsn;
mutex_exit(&(log_sys->mutex));
/* log_checkpoint_and_mark_file_spaces(); */
return(DB_SUCCESS);
}
/**********************************************************
Switches the online backup state off. */
ulint
log_switch_backup_state_off(void)
/*=============================*/
/* out: DB_SUCCESS or DB_ERROR */
{
mutex_enter(&(log_sys->mutex));
if (!log_sys->online_backup_state) {
/* The database is already in that state */
mutex_exit(&(log_sys->mutex));
return(DB_ERROR);
}
log_sys->online_backup_state = FALSE;
mutex_exit(&(log_sys->mutex));
return(DB_SUCCESS);
}
/********************************************************************
Makes a checkpoint at the latest lsn and writes it to first page of each
data file in the database, so that we know that the file spaces contain

13
innobase/log/log0recv.c
View File

@ -790,9 +790,6 @@ recv_parse_or_apply_log_rec_body(
} else if (type == MLOG_IBUF_BITMAP_INIT) {
new_ptr = ibuf_parse_bitmap_init(ptr, end_ptr, page, mtr);
} else if (type == MLOG_FULL_PAGE) {
new_ptr = mtr_log_parse_full_page(ptr, end_ptr, page);
} else if (type == MLOG_INIT_FILE_PAGE) {
new_ptr = fsp_parse_init_file_page(ptr, end_ptr, page);
@ -1093,15 +1090,7 @@ recv_recover_page(
buf = ((byte*)(recv->data)) + sizeof(recv_data_t);
}
if (recv->type == MLOG_INIT_FILE_PAGE
|| recv->type == MLOG_FULL_PAGE) {
/* A new file page may have been taken into use,
or we have stored the full contents of the page:
in this case it may be that the original log record
type was MLOG_INIT_FILE_PAGE, and we replaced it
with MLOG_FULL_PAGE, thus we have to apply
any record of type MLOG_FULL_PAGE */
if (recv->type == MLOG_INIT_FILE_PAGE) {
page_lsn = page_newest_lsn;
mach_write_to_8(page + UNIV_PAGE_SIZE

199
innobase/mtr/mtr0mtr.c
View File

@ -105,179 +105,6 @@ mtr_memo_pop_all(
}
}
/****************************************************************
Writes to the log the contents of a full page. This is called when the
database is in the online backup state. */
static
void
mtr_log_write_full_page(
/*====================*/
page_t* page, /* in: page to write */
ulint i, /* in: i'th page for mtr */
ulint n_pages,/* in: total number of pages for mtr */
mtr_t* mtr) /* in: mtr */
{
byte* buf;
byte* ptr;
ulint len;
buf = mem_alloc(UNIV_PAGE_SIZE + 50);
ptr = mlog_write_initial_log_record_fast(page, MLOG_FULL_PAGE, buf,
mtr);
ut_memcpy(ptr, page, UNIV_PAGE_SIZE);
len = (ptr - buf) + UNIV_PAGE_SIZE;
if (i == n_pages - 1) {
if (n_pages > 1) {
*(buf + len) = MLOG_MULTI_REC_END;
len++;
} else {
*buf = (byte)((ulint)*buf | MLOG_SINGLE_REC_FLAG);
}
}
ut_ad(len < UNIV_PAGE_SIZE + 50);
log_write_low(buf, len);
mem_free(buf);
}
/****************************************************************
Parses a log record which contains the full contents of a page. */
byte*
mtr_log_parse_full_page(
/*====================*/
/* out: end of log record or NULL */
byte* ptr, /* in: buffer */
byte* end_ptr,/* in: buffer end */
page_t* page) /* in: page or NULL */
{
if (end_ptr < ptr + UNIV_PAGE_SIZE) {
return(NULL);
}
if (page) {
ut_memcpy(page, ptr, UNIV_PAGE_SIZE);
}
return(ptr + UNIV_PAGE_SIZE);
}
/****************************************************************
Writes to the database log the full contents of the pages that this mtr has
modified. */
static
void
mtr_log_write_backup_full_pages(
/*============================*/
mtr_t* mtr, /* in: mini-transaction */
ulint n_pages)/* in: number of pages modified by mtr */
{
mtr_memo_slot_t* slot;
dyn_array_t* memo;
buf_block_t* block;
ulint offset;
ulint type;
ulint i;
ut_ad(mtr);
ut_ad(mtr->magic_n == MTR_MAGIC_N);
ut_ad(mtr->state == MTR_COMMITTING);
/* Open the database log for log_write_low */
mtr->start_lsn = log_reserve_and_open(n_pages * (UNIV_PAGE_SIZE + 50));
memo = &(mtr->memo);
offset = dyn_array_get_data_size(memo);
i = 0;
while (offset > 0) {
offset -= sizeof(mtr_memo_slot_t);
slot = dyn_array_get_element(memo, offset);
block = slot->object;
type = slot->type;
if ((block != NULL) && (type == MTR_MEMO_PAGE_X_FIX)) {
mtr_log_write_full_page(block->frame, i, n_pages, mtr);
i++;
}
}
ut_ad(i == n_pages);
}
/****************************************************************
Checks if mtr is the first to modify any page after online_backup_lsn. */
static
ibool
mtr_first_to_modify_page_after_backup(
/*==================================*/
/* out: TRUE if first for a page */
mtr_t* mtr, /* in: mini-transaction */
ulint* n_pages) /* out: number of modified pages (all modified
pages, backup_lsn does not matter here) */
{
mtr_memo_slot_t* slot;
dyn_array_t* memo;
ulint offset;
buf_block_t* block;
ulint type;
dulint backup_lsn;
ibool ret = FALSE;
ut_ad(mtr);
ut_ad(mtr->magic_n == MTR_MAGIC_N);
ut_ad(mtr->state == MTR_COMMITTING);
backup_lsn = log_get_online_backup_lsn_low();
memo = &(mtr->memo);
offset = dyn_array_get_data_size(memo);
*n_pages = 0;
while (offset > 0) {
offset -= sizeof(mtr_memo_slot_t);
slot = dyn_array_get_element(memo, offset);
block = slot->object;
type = slot->type;
if ((block != NULL) && (type == MTR_MEMO_PAGE_X_FIX)) {
*n_pages = *n_pages + 1;
if (ut_dulint_cmp(buf_frame_get_newest_modification(
block->frame),
backup_lsn) <= 0) {
fprintf(stderr,
"Page %lu newest %lu backup %lu\n",
block->offset,
ut_dulint_get_low(
buf_frame_get_newest_modification(
block->frame)),
ut_dulint_get_low(backup_lsn));
ret = TRUE;
}
}
}
return(ret);
}
/****************************************************************
Writes the contents of a mini-transaction log, if any, to the database log. */
static
@ -291,7 +118,6 @@ mtr_log_reserve_and_write(
ulint data_size;
ibool success;
byte* first_data;
ulint n_modified_pages;
ut_ad(mtr);
@ -322,27 +148,12 @@ mtr_log_reserve_and_write(
if (mtr->log_mode == MTR_LOG_ALL) {
if (log_get_online_backup_state_low()
&& mtr_first_to_modify_page_after_backup(mtr,
&n_modified_pages)) {
/* The database is in the online backup state: write
to the log the full contents of all the pages if this
mtr is the first to modify any page in the buffer pool
after online_backup_lsn */
block = mlog;
log_close();
log_release();
mtr_log_write_backup_full_pages(mtr, n_modified_pages);
} else {
block = mlog;
while (block != NULL) {
log_write_low(dyn_block_get_data(block),
dyn_block_get_used(block));
block = dyn_array_get_next_block(mlog, block);
}
while (block != NULL) {
log_write_low(dyn_block_get_data(block),
dyn_block_get_used(block));
block = dyn_array_get_next_block(mlog, block);
}
} else {
ut_ad(mtr->log_mode == MTR_LOG_NONE);