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WL#3023 (RBR: Use locks in a statement-like manner):

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Adaptions to make it work with NDB.
This commit is contained in:
mats@mysql.com
2006-02-24 16:19:55 +01:00
parent 43bc3c4068
commit 101edab125
53 changed files with 647 additions and 503 deletions
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74
sql/rpl_injector.h
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@ -159,6 +159,24 @@ public:
return *this;
}
/*
DESCRIPTION
Register table for use within the transaction. All tables
that are going to be used need to be registered before being
used below. The member function will fail with an error if
use_table() is called after any *_row() function has been
called for the transaction.
RETURN VALUE
0 All OK
>0 Failure
*/
int use_table(server_id_type sid, table tbl);
/*
Add a 'write row' entry to the transaction.
*/
@ -219,6 +237,62 @@ public:
}
}
enum enum_state
{
START_STATE, /* Start state */
TABLE_STATE, /* At least one table has been registered */
ROW_STATE, /* At least one row has been registered */
STATE_COUNT /* State count and sink state */
} m_state;
/*
Check and update the state.
PARAMETER(S)
target_state
The state we are moving to: TABLE_STATE if we are
writing a table and ROW_STATE if we are writing a row.
DESCRIPTION
The internal state will be updated to the target state if
and only if it is a legal move. The only legal moves are:
START_STATE -> START_STATE
START_STATE -> TABLE_STATE
TABLE_STATE -> TABLE_STATE
TABLE_STATE -> ROW_STATE
That is:
- It is not possible to write any row before having written at
least one table
- It is not possible to write a table after at least one row
has been written
RETURN VALUE
0 All OK
-1 Incorrect call sequence
*/
int check_state(enum_state const target_state)
{
static char const *state_name[] = {
"START_STATE", "TABLE_STATE", "ROW_STATE", "STATE_COUNT"
};
DBUG_ASSERT(0 <= target_state && target_state <= STATE_COUNT);
DBUG_PRINT("info", ("In state %s", state_name[m_state]));
if (m_state <= target_state && target_state <= m_state + 1 &&
m_state < STATE_COUNT)
m_state= target_state;
else
m_state= STATE_COUNT;
return m_state == STATE_COUNT ? 1 : 0;
}
binlog_pos m_start_pos;
THD *m_thd;
};