test_multixact.c File Reference

#include "postgres.h"
#include "access/multixact.h"
#include "access/xact.h"
#include "fmgr.h"

Include dependency graph for test_multixact.c:

Go to the source code of this file.

Functions
	PG_FUNCTION_INFO_V1 (test_create_multixact)
	PG_FUNCTION_INFO_V1 (test_read_multixact)
Datum	test_create_multixact (PG_FUNCTION_ARGS)
Datum	test_read_multixact (PG_FUNCTION_ARGS)

Function Documentation

PG_FUNCTION_INFO_V1() [1/2]

PG_FUNCTION_INFO_V1

(

test_create_multixact

)

PG_FUNCTION_INFO_V1() [2/2]

PG_FUNCTION_INFO_V1

(

test_read_multixact

)

test_create_multixact()

Datum test_create_multixact

(

PG_FUNCTION_ARGS

)

Definition at line 28 of file test_multixact.c.

{
    MultiXactId id;
 
    MultiXactIdSetOldestMember();
    id = MultiXactIdCreate(GetCurrentTransactionId(), MultiXactStatusUpdate,
                           GetCurrentTransactionId(), MultiXactStatusForShare);
    PG_RETURN_TRANSACTIONID(id);
}

References GetCurrentTransactionId(), MultiXactIdCreate(), MultiXactIdSetOldestMember(), MultiXactStatusForShare, MultiXactStatusUpdate, and PG_RETURN_TRANSACTIONID.

test_read_multixact()

Datum test_read_multixact

(

PG_FUNCTION_ARGS

)

Definition at line 42 of file test_multixact.c.

{
    MultiXactId id = PG_GETARG_TRANSACTIONID(0);
    MultiXactMember *members;
 
    /* discard caches */
    AtEOXact_MultiXact();
 
    if (GetMultiXactIdMembers(id, &members, false, false) == -1)
        elog(ERROR, "MultiXactId not found");
 
    PG_RETURN_VOID();
}

References AtEOXact_MultiXact(), elog, ERROR, GetMultiXactIdMembers(), PG_GETARG_TRANSACTIONID, and PG_RETURN_VOID.