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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include "mpitestconf.h"
#ifdef HAVE_IOSTREAM
// Not all C++ compilers have iostream instead of iostream.h
#include <iostream>
#ifdef HAVE_NAMESPACE_STD
// Those that do often need the std namespace; otherwise, a bare "cout"
// is likely to fail to compile
using namespace std;
#endif
#else
#include <iostream.h>
#endif
#include <stdio.h>
#include "mpitestcxx.h"
#ifdef HAVE_STRING_H
#include <string.h>
#endif
static char MTestDescrip[] = "Test freeing keyvals while still attached to \
a communicator, then make sure that the keyval delete and copy code are still \
executed";
/* Copy increments the attribute value */
int copy_fn(const MPI::Comm & oldcomm, int keyval, void *extra_state,
void *attribute_val_in, void *attribute_val_out, bool & flag)
{
/* Copy the address of the attribute */
*(void **) attribute_val_out = attribute_val_in;
/* Change the value */
*(int *) attribute_val_in = *(int *) attribute_val_in + 1;
/* set flag to 1 to tell comm dup to insert this attribute
* into the new communicator */
flag = 1;
return MPI::SUCCESS;
}
/* Delete decrements the attribute value */
int delete_fn(MPI::Comm & comm, int keyval, void *attribute_val, void *extra_state)
{
*(int *) attribute_val = *(int *) attribute_val - 1;
return MPI::SUCCESS;
}
int main(int argc, char *argv[])
{
int errs = 0;
int attrval;
int i, key[32], keyval, saveKeyval;
MPI::Intracomm comm, dupcomm;
MTest_Init();
while (MTestGetIntracomm(comm, 1)) {
if (comm == MPI::COMM_NULL)
continue;
keyval = MPI::Comm::Create_keyval(copy_fn, delete_fn, (void *) 0);
saveKeyval = keyval; /* in case we need to free explicitly */
attrval = 1;
comm.Set_attr(keyval, &attrval);
/* See MPI-1, 5.7.1. Freeing the keyval does not remove it if it
* is in use in an attribute */
MPI::Comm::Free_keyval(keyval);
/* We create some dummy keyvals here in case the same keyval
* is reused */
for (i = 0; i < 32; i++) {
key[i] = MPI::Comm::Create_keyval(MPI::Comm::NULL_COPY_FN,
MPI::Comm::NULL_DELETE_FN, (void *) 0);
}
dupcomm = comm.Dup();
/* Check that the attribute was copied */
if (attrval != 2) {
errs++;
cout << "Attribute not incremented when comm dup'ed, attrval = " <<
attrval << " should be 2 in communicator " << MTestGetIntracommName() << "\n";
}
dupcomm.Free();
if (attrval != 1) {
errs++;
cout << "Attribute not decremented when comm dup'ed, attrval = " <<
attrval << " should be 1 in communicator " << MTestGetIntracommName() << "\n";
}
/* Check that the attribute was freed in the dupcomm */
if (comm != MPI::COMM_WORLD && comm != MPI::COMM_SELF) {
comm.Free();
/* Check that the original attribute was freed */
if (attrval != 0) {
errs++;
printf("Attribute not decremented when comm %s freed\n", MTestGetIntracommName());
}
} else {
/* Explicitly delete the attributes from world and self */
comm.Delete_attr(saveKeyval);
}
/* Free those other keyvals */
for (i = 0; i < 32; i++) {
MPI::Comm::Free_keyval(key[i]);
}
}
MTest_Finalize(errs);
/* The attributes on comm self and world were deleted by finalize
* (see separate test) */
return 0;
}
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