X-Git-Url: http://bilbo.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/aac4ba41ea27fe8168bebed009abebd7e5c3f006..4cdc0f888550cbaefe6094ae801230336d005337:/teshsuite/smpi/mpich3-test/rma/lock_nested.c

diff --git a/teshsuite/smpi/mpich3-test/rma/lock_nested.c b/teshsuite/smpi/mpich3-test/rma/lock_nested.c
new file mode 100644
index 0000000000..58d03fa76f
--- /dev/null
+++ b/teshsuite/smpi/mpich3-test/rma/lock_nested.c
@@ -0,0 +1,52 @@
+/* -*- Mode: C; c-basic-offset:4 ; -*- */
+/*
+ * (C) 2016 by Argonne National Laboratory.
+ *     See COPYRIGHT in top-level directory.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <mpi.h>
+
+#define BUFSIZE 4
+
+/* This program tests nested lock. Process 0 locks the other processes
+ * one by one, then unlock each of them.*/
+
+int main(int argc, char *argv[])
+{
+    int rank = 0, nprocs = 0, dst = 0;
+    int winbuf[BUFSIZE];
+    MPI_Win win = MPI_WIN_NULL;
+
+    MPI_Init(&argc, &argv);
+    MPI_Comm_rank(MPI_COMM_WORLD, &rank);
+    MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
+
+    memset(winbuf, 0, sizeof(int) * BUFSIZE);
+    MPI_Win_create(winbuf, sizeof(int) * BUFSIZE, sizeof(int), MPI_INFO_NULL, MPI_COMM_WORLD, &win);
+
+    if (rank == 0) {
+        /* lock each process */
+        for (dst = 0; dst < nprocs; dst++) {
+            MPI_Win_lock(MPI_LOCK_SHARED, dst, 0, win);
+        }
+
+        /* unlock each process */
+        for (dst = nprocs - 1; dst >= 0; dst--) {
+            MPI_Win_unlock(dst, win);
+        }
+    }
+
+    MPI_Barrier(MPI_COMM_WORLD);
+    MPI_Win_free(&win);
+
+    if (rank == 0) {
+        fprintf(stdout, " No Errors\n");
+        fflush(stdout);
+    }
+
+    MPI_Finalize();
+    return 0;
+}