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Added support for X/Open XA prepare, recover, commit and rollback.

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innobase/include/trx0roll.h:
  Changed prototype of the function trx_rollback_or_clean_all_without_sess
  because this function is executed in a background thread.
innobase/include/trx0trx.h:
  Added support for X/Open XA prepare, recover and search by X/Open XA XID.
innobase/include/trx0undo.h:
  Added support for X/Open XA prepare and recover. We need to store X/Open XA XID
  to the undo log header for recovery.
innobase/log/log0recv.c:
  Create a thread to run trx_rollback_or_clean_all_without_sess function
  to rollback the uncommitted transactions which have no user session.
innobase/row/row0ins.c:
  Remove unnecessary variables.
innobase/trx/trx0roll.c:
  Changed so that trx_rollback_or_clean_all_without_sess is executed
  in a background thread. We should also leave all prepared transactions
  active to wait for commit or abort from MySQL.
innobase/trx/trx0sys.c:
  Only those rows which belong to the active transaction in crash recovery
  are undone.
innobase/trx/trx0trx.c:
  Added support for X/Open XA prepare and recover. We need to store X/Open XA
  XID to trx structure and left prepared transactions to wait for a
  commit or abort from MySQL. This requires also that we add TRX_PREPARED
  state to the transaction and TRX_UNDO_PREPARED state for undo logs.
innobase/trx/trx0undo.c:
  Added support for X/Open XA prepare and recover. We need to store X/Open XA
  XID to undo log header for recovery of distributed transactions.
sql/ha_innodb.h:
  Added prototypes for X/Open XA prepare, recover, commit and rollback.
sql/handler.h:
  Added definition for X/Open XA XID structure.
This commit is contained in:
unknown
2004-11-30 11:45:02 +02:00
parent f4110834a3
commit df0e057a52
13 changed files with 1029 additions and 48 deletions
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35
sql/handler.h
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@ -193,6 +193,41 @@ typedef struct st_thd_trans {
void *ndb_tid;
} THD_TRANS;
#ifndef XIDDATASIZE /* no xa.h included */
/* XXX - may be we should disable xa completely in this case ? */
#define XIDDATASIZE 128
#define MAXGTRIDSIZE 64
#define MAXBQUALSIZE 64
struct xid_t {
long formatID;
long gtrid_length;
long bqual_length;
char data[XIDDATASIZE];
};
typedef struct xid_t XID;
#endif
typedef struct
{
byte slot;
uint savepoint_offset;
int (*close_connection)(THD *thd);
int (*savepoint_set)(THD *thd, void *sv);
int (*savepoint_rollback)(THD *thd, void *sv);
int (*savepoint_release)(THD *thd, void *sv);
int (*commit)(THD *thd, bool all);
int (*rollback)(THD *thd, bool all);
int (*prepare)(THD *thd, bool all);
int (*recover)(XID *xid_list, uint len);
int (*commit_by_xid)(XID *xid);
int (*rollback_by_xid)(XID *xid);
} handlerton;
enum enum_tx_isolation { ISO_READ_UNCOMMITTED, ISO_READ_COMMITTED,
ISO_REPEATABLE_READ, ISO_SERIALIZABLE};