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WL 2826: Step 10

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New methods to read/write/initialise table log
This commit is contained in:
mikron@c-9c0ae253.1238-1-64736c10.cust.bredbandsbolaget.se 2006-02-06 21:47:03 +01:00
parent a886da98da
commit 83890afeb2
2 changed files with 133 additions and 6 deletions
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19
sql/mysql_priv.h
View file

@ -1158,7 +1158,24 @@ typedef struct st_lock_param_type
void mem_alloc_error(size_t size);
bool write_table_log(ALTER_PARTITION_PARAM_TYPE *lpt);
typedef struct st_table_log_entry
{
const char *name;
const char *from_name;
const char *handler_type;
char action_type;
} TABLE_LOG_ENTRY;
bool write_table_log_entry(TABLE_LOG_ENTRY *table_log_entry,
uint next_entry,
uint *entry_written);
bool write_execute_table_log_entry(uint first_entry, uint *exec_entry);
uint read_table_log_header();
bool read_table_log_entry(uint read_entry, TABLE_LOG_ENTRY *table_log_entry);
bool init_table_log();
void release_table_log();
bool write_log_shadow_frm(ALTER_PARTITION_PARAM_TYPE *lpt, bool install_flag);
bool write_log_drop_partition(ALTER_PARTITION_PARAM_TYPE *lpt);
bool write_log_add_partition(ALTER_PARTITION_PARAM_TYPE *lpt);

120
sql/sql_table.cc
View file

@ -247,11 +247,12 @@ static int mysql_copy_key_list(List<Key> *orig_key,
/*
SYNOPSIS
write_table_log()
lpt Struct carrying parameters to the function
write_table_log_entry()
table_log_entry Information about log entry
out:entry_written Entry information written into
RETURN VALUES
TRUE Failure in writing the log
TRUE Error
FALSE Success
DESCRIPTION
@ -260,13 +261,122 @@ static int mysql_copy_key_list(List<Key> *orig_key,
*/
bool
write_table_log(ALTER_PARTITION_PARAM_TYPE *lpt)
write_table_log_entry(TABLE_LOG_ENTRY *table_log_entry,
uint next_entry,
uint *entry_written)
{
DBUG_ENTER("write_table_log");
DBUG_ENTER("write_table_log_entry");
DBUG_RETURN(FALSE);
}
/*
Write final entry in the table log
SYNOPSIS
write_execute_table_log_entry()
first_entry First entry in linked list of entries
to execute, if 0 = NULL it means that
the entry is removed and the entries
are put into the free list.
in:out:exec_entry Entry to execute, 0 = NULL if the entry
is written first time and needs to be
returned. In this case the entry written
is returned in this parameter
RETURN VALUES
TRUE Error
FALSE Success
DESCRIPTION
This is the last write in the table log. The previous log entries have
already been written but not yet synched to disk.
*/
bool
write_execute_table_log_entry(uint first_entry, uint *exec_entry)
{
DBUG_ENTER("write_execute_table_log_entry");
DBUG_RETURN(FALSE);
}
/*
Read header of table log file
SYNOPSIS
read_table_log_header()
RETURN VALUES
> 0 Last entry in table log
0 No entries in table log
DESCRIPTION
When we read the table log header we get information about maximum sizes
of names in the table log and we also get information about the number
of entries in the table log.
*/
uint
read_table_log_header()
{
DBUG_ENTER("read_table_log_header");
DBUG_RETURN(0);
}
/*
Read a table log entry
SYNOPSIS
read_table_log_entry()
read_entry Number of entry to read
out:entry_info Information from entry
RETURN VALUES
TRUE Error
FALSE Success
DESCRIPTION
Read a specified entry in the table log
*/
bool
read_table_log_entry(uint read_entry, TABLE_LOG_ENTRY *table_log_entry)
{
DBUG_ENTER("read_table_log_entry");
DBUG_RETURN(FALSE);
}
/*
Initialise table log
SYNOPSIS
init_table_log()
RETURN VALUES
TRUE Error
FALSE Success
DESCRIPTION
Write the header of the table log file and length of names. Also set
number of entries to zero.
*/
bool
init_table_log()
{
DBUG_ENTER("init_table_log");
DBUG_RETURN(FALSE);
}
/*
Release all memory allocated to the table log
SYNOPSIS
release_table_log()
RETURN VALUES
NONE
*/
void
release_table_log()
{
DBUG_ENTER("release_table_log");
DBUG_RETURN_VOID;
}
/*
SYNOPSIS
mysql_write_frm()