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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
/*
Check that MPI_xxxx_c2f, applied to the same object several times,
yields the same handle. We do this because when MPI handles in
C are a different length than those in Fortran, care needs to
be exercised to ensure that the mapping from one to another is unique.
(Test added to test a potential problem in ROMIO for handling MPI_File
on 64-bit systems)
*/
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"
int main(int argc, char *argv[])
{
MPI_Fint handleA, handleB;
int rc;
int errs = 0;
int buf[1];
MPI_Request cRequest;
MPI_Status st;
int tFlag;
MTest_Init(&argc, &argv);
/* Request */
rc = MPI_Irecv(buf, 1, MPI_INT, 0, 0, MPI_COMM_WORLD, &cRequest);
if (rc) {
errs++;
printf("Unable to create request\n");
} else {
handleA = MPI_Request_c2f(cRequest);
handleB = MPI_Request_c2f(cRequest);
if (handleA != handleB) {
errs++;
printf("MPI_Request_c2f does not give the same handle twice on the same MPI_Request\n");
}
}
MPI_Cancel(&cRequest);
MPI_Wait(&cRequest, &st);
MPI_Test_cancelled(&st, &tFlag);
if (!tFlag) {
errs++;
printf("Unable to cancel MPI_Irecv request\n");
}
/* Using MPI_Request_free should be ok, but some MPI implementations
* object to it immediately after the cancel and that isn't essential to
* this test */
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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