X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/cd9affe6152d6bbec19a72ea6fe26ab9407b51b7..fff5fbf696a8eaf8a7f230c4e15c763db690bcc3:/teshsuite/smpi/isp/umpire/waitany-deadlock.c

diff --git a/teshsuite/smpi/isp/umpire/waitany-deadlock.c b/teshsuite/smpi/isp/umpire/waitany-deadlock.c
new file mode 100644
index 0000000000..76dcb1bd21
--- /dev/null
+++ b/teshsuite/smpi/isp/umpire/waitany-deadlock.c
@@ -0,0 +1,72 @@
+/* -*- Mode: C; -*- */
+/* Creator: Bronis R. de Supinski (bronis@llnl.gov) Fri Mar  17 2000 */
+/* waitany-deadlock.c -- deadlock involving MPI_Waitany call */
+
+#include <stdio.h>
+#include <assert.h>
+#include "mpi.h"
+
+#define buf_size 128
+
+int
+main (int argc, char **argv)
+{
+  int nprocs = -1;
+  int rank = -1;
+  char processor_name[128];
+  int namelen = 128;
+  int buf0[buf_size];
+  int buf1[buf_size];
+  int buf2[buf_size];
+  int i, flipbit, done;
+  MPI_Status status;
+
+  /* init */
+  MPI_Init (&argc, &argv);
+  MPI_Comm_size (MPI_COMM_WORLD, &nprocs);
+  MPI_Comm_rank (MPI_COMM_WORLD, &rank);
+  MPI_Get_processor_name (processor_name, &namelen);
+  printf ("(%d) is alive on %s\n", rank, processor_name);
+  fflush (stdout);
+
+  MPI_Barrier (MPI_COMM_WORLD);
+
+  if (nprocs < 2)
+    {
+      printf ("not enough tasks\n");
+    }
+  else if (rank == 0)
+    {
+      MPI_Request reqs[3];
+
+      MPI_Irecv (buf0, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD, &reqs[0]);
+      MPI_Irecv (buf1, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD, &reqs[1]);
+      MPI_Irecv (buf2, buf_size, MPI_INT, 1, 0, MPI_COMM_WORLD, &reqs[2]);
+
+      for (i = 3; i > 0; i--) {
+	MPI_Waitany (i, reqs, &done, &status);
+
+	assert (done == (i - 1));
+
+	/* don't let next one start until after waitany call... */
+	MPI_Send (&flipbit, 1, MPI_INT, 1, i, MPI_COMM_WORLD);
+      }
+    }
+  else if (rank == 1)
+    {
+      memset (buf0, 1, buf_size);
+
+      for (i = 3; i > 0; i--) {
+	MPI_Recv (&flipbit, 1, MPI_INT, 0, i, MPI_COMM_WORLD, &status);
+	
+	MPI_Send (buf0, buf_size, MPI_INT, 0, 0, MPI_COMM_WORLD);
+      }
+    }
+
+  MPI_Barrier (MPI_COMM_WORLD);
+
+  MPI_Finalize ();
+  printf ("(%d) Finished normally\n", rank);
+}
+
+/* EOF */