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# lrt_tpscmt

Transaction Handling Functions

Sets when the lrt_tpcommit should return.

int lrt_tpscmt( long flags );

flags | Define how lrt_tpcommit should behave with respect to returning control to its caller. Two possible values:TP_CMT_LOGGED - indicates that lrt_tpcommit should return after the commit decision has been logged by the first phase of the two-phased commit protocol, but before the second phase has completed.TP_CMT_COMPLETE - indicates that lrt_tpcommit should return after the two-phase commit protocol has finished completely.

The lrt_tpscmt function is used in conjunction with lrt_tpcommit to set when the lrt_tpcommit should return.

## Return Values

If the function succeeds, it returns the previous value of the TP_COMMIT_CONTROL characteristic. If it fails, it returns -1 and sets tperrno to indicate the error condition.

## Parameterization

You cannot use standard parameterization for any arguments in this function.

## Example

In the following example , the lrt_tpscmtfunctionsets lrt_tpcommit to return after the protocol is completed.

Copy code

    int tpresult_int;
        /* Begin a new transaction with a timeout of 30 seconds*/
        tpresult_int = lrt_tpbegin(30, 0);
        lrt_abort_on_error();
        /* Set lrt_tpcommit to return after the two-phase commit     protocol has finished completely. */
        lrt_tpscmt (TP_CMT_COMPLETE);
        lrt_tpcommit(0);

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