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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include <stdlib.h>
#include "mpitest.h"
/*
static char MTEST_Descrip[] = "Test of various receive cancel calls, with multiple requests to cancel";
*/
int main(int argc, char *argv[])
{
int errs = 0;
int rank, size, source, dest;
MPI_Comm comm;
MPI_Status status;
MPI_Request req[4];
static int bufsizes[4] = { 1, 100, 10000, 1000000 };
char *bufs[4];
int flag, i;
MTest_Init(&argc, &argv);
comm = MPI_COMM_WORLD;
MPI_Comm_rank(comm, &rank);
MPI_Comm_size(comm, &size);
source = 0;
dest = size - 1;
if (rank == source) {
MPI_Send(MPI_BOTTOM, 0, MPI_CHAR, dest, 1, MPI_COMM_WORLD);
} else if (rank == dest) {
/* Create 3 requests to cancel, plus one to use.
* Then receive one message and exit */
for (i = 0; i < 4; i++) {
bufs[i] = (char *) malloc(bufsizes[i]);
MPI_Irecv(bufs[i], bufsizes[i], MPI_CHAR, source, i, MPI_COMM_WORLD, &req[i]);
}
/* Now, cancel them in a more interesting order, to ensure that the
* queue operation work properly */
MPI_Cancel(&req[2]);
MPI_Wait(&req[2], &status);
MTestPrintfMsg(1, "Completed wait on irecv[2]\n");
MPI_Test_cancelled(&status, &flag);
if (!flag) {
errs++;
printf("Failed to cancel a Irecv[2] request\n");
fflush(stdout);
}
MPI_Cancel(&req[3]);
MPI_Wait(&req[3], &status);
MTestPrintfMsg(1, "Completed wait on irecv[3]\n");
MPI_Test_cancelled(&status, &flag);
if (!flag) {
errs++;
printf("Failed to cancel a Irecv[3] request\n");
fflush(stdout);
}
MPI_Cancel(&req[0]);
MPI_Wait(&req[0], &status);
MTestPrintfMsg(1, "Completed wait on irecv[0]\n");
MPI_Test_cancelled(&status, &flag);
if (!flag) {
errs++;
printf("Failed to cancel a Irecv[0] request\n");
fflush(stdout);
}
MPI_Wait(&req[1], &status);
MPI_Test_cancelled(&status, &flag);
if (flag) {
errs++;
printf("Incorrectly cancelled Irecv[1]\n");
fflush(stdout);
}
for (i = 0; i < 4; i++) {
free(bufs[i]);
}
}
MTest_Finalize(errs);
return MTestReturnValue(errs);
}
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