@@ -146,9 +146,12 @@ static bool MtmDetectGlobalDeadLock(PGPROC* proc);
146146static void MtmAddSubtransactions (MtmTransState * ts ,TransactionId * subxids ,int nSubxids );
147147static char const * MtmGetName (void );
148148static size_t MtmGetTransactionStateSize (void );
149- static void MtmSerializeTransactionState (void * ctx );
150- static void MtmDeserializeTransactionState (void * ctx );
151- static void MtmInitializeSequence (int64 * start ,int64 * step );
149+ static void MtmSerializeTransactionState (void * ctx );
150+ static void MtmDeserializeTransactionState (void * ctx );
151+ static void MtmInitializeSequence (int64 * start ,int64 * step );
152+ static void * MtmCreateSavepointContext (void );
153+ static void MtmRestoreSavepointContext (void * ctx );
154+ static void MtmReleaseSavepointContext (void * ctx );
152155
153156static void MtmCheckClusterLock (void );
154157static void MtmCheckSlots (void );
@@ -197,7 +200,10 @@ static TransactionManager MtmTM =
197200MtmGetTransactionStateSize ,
198201MtmSerializeTransactionState ,
199202MtmDeserializeTransactionState ,
200- MtmInitializeSequence
203+ MtmInitializeSequence ,
204+ MtmCreateSavepointContext ,
205+ MtmRestoreSavepointContext ,
206+ MtmReleaseSavepointContext
201207};
202208
203209char const * const MtmNodeStatusMnem []=
@@ -467,6 +473,20 @@ MtmInitializeSequence(int64* start, int64* step)
467473}
468474}
469475
476+ static void * MtmCreateSavepointContext (void )
477+ {
478+ return (void * )(size_t )MtmTx .containsDML ;
479+ }
480+
481+ static void MtmRestoreSavepointContext (void * ctx )
482+ {
483+ MtmTx .containsDML = ctx != NULL ;
484+ }
485+
486+ static void MtmReleaseSavepointContext (void * ctx )
487+ {
488+ }
489+
470490
471491/*
472492 * -------------------------------------------