--- /dev/null
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ * (C) 2001 by Argonne National Laboratory.
+ * See COPYRIGHT in top-level directory.
+ */
+#include "mpi.h"
+#include <stdio.h>
+#include <stdlib.h>
+#include "mpitest.h"
+#include "mpitestconf.h"
+#ifdef HAVE_STRING_H
+#include <string.h>
+#endif
+
+/*
+ * This is a simple program that tests bsend. It may be run as a single
+ * process to simplify debugging; in addition, bsend allows send-to-self
+ * programs.
+ */
+int main( int argc, char *argv[] )
+{
+ MPI_Comm comm = MPI_COMM_WORLD;
+ int dest = 0, src = 0, tag = 1;
+ int s1, s2, s3;
+ char *buf, *bbuf;
+ char msg1[7], msg3[17];
+ double msg2[2];
+ char rmsg1[64], rmsg3[64];
+ double rmsg2[64];
+ int errs = 0, rank;
+ int bufsize, bsize;
+
+ MTest_Init( &argc, &argv );
+ MPI_Comm_rank( MPI_COMM_WORLD, &rank );
+
+ /* According to the standard, we must use the PACK_SIZE length of each
+ message in the computation of the message buffer size */
+ MPI_Pack_size( 7, MPI_CHAR, comm, &s1 );
+ MPI_Pack_size( 2, MPI_DOUBLE, comm, &s2 );
+ MPI_Pack_size( 17, MPI_CHAR, comm, &s3 );
+ bufsize = 3 * MPI_BSEND_OVERHEAD + s1 + s2 + s3;
+ buf = (char *)malloc( bufsize );
+ MPI_Buffer_attach( buf, bufsize );
+
+ strncpy( msg1, "012345", 7 );
+ strncpy( msg3, "0123401234012341", 17 );
+ msg2[0] = 1.23; msg2[1] = 3.21;
+
+ if (rank == src) {
+ /* These message sizes are chosen to expose any alignment problems */
+ MPI_Bsend( msg1, 7, MPI_CHAR, dest, tag, comm );
+ MPI_Bsend( msg2, 2, MPI_DOUBLE, dest, tag, comm );
+ MPI_Bsend( msg3, 17, MPI_CHAR, dest, tag, comm );
+ }
+
+ if (rank == dest) {
+ MPI_Recv( rmsg1, 7, MPI_CHAR, src, tag, comm, MPI_STATUS_IGNORE );
+ MPI_Recv( rmsg2, 10, MPI_DOUBLE, src, tag, comm, MPI_STATUS_IGNORE );
+ MPI_Recv( rmsg3, 17, MPI_CHAR, src, tag, comm, MPI_STATUS_IGNORE );
+
+ if (strcmp( rmsg1, msg1 ) != 0) {
+ errs++;
+ fprintf( stderr, "message 1 (%s) should be %s\n", rmsg1, msg1 );
+ }
+ if (rmsg2[0] != msg2[0] || rmsg2[1] != msg2[1]) {
+ errs++;
+ fprintf( stderr,
+ "message 2 incorrect, values are (%f,%f) but should be (%f,%f)\n",
+ rmsg2[0], rmsg2[1], msg2[0], msg2[1] );
+ }
+ if (strcmp( rmsg3, msg3 ) != 0) {
+ errs++;
+ fprintf( stderr, "message 3 (%s) should be %s\n", rmsg3, msg3 );
+ }
+ }
+
+ /* We can't guarantee that messages arrive until the detach */
+ MPI_Buffer_detach( &bbuf, &bsize );
+
+ MTest_Finalize( errs );
+
+ MPI_Finalize();
+ return 0;
+}