model-checker : new files forgotten

[simgrid.git] / examples / smpi / mc / non_termination4.c

diff --git a/examples/smpi/mc/non_termination4.c b/examples/smpi/mc/non_termination4.c
new file mode 100644 (file)
index 0000000..4e03da5
--- /dev/null
+++ b/examples/smpi/mc/non_termination4.c
@@ -0,0 +1,39 @@
+#include <stdio.h>
+#include <mpi.h>
+#include <simgrid/modelchecker.h>
+
+int x = 20;
+
+int main(int argc, char **argv) {
+  
+       int recv_x, size, rank;
+  MPI_Status status;
+
+  MPI_Init(&argc, &argv);
+  
+  MPI_Comm_size(MPI_COMM_WORLD, &size);   /* Get nr of tasks */
+  MPI_Comm_rank(MPI_COMM_WORLD, &rank);   /* Get id of this process */
+  
+  MC_ignore(&(status.count), sizeof(status.count));
+
+  if(rank==0){
+    while (recv_x>=0) {
+      MPI_Recv(&recv_x, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
+    }
+  }else{
+    
+    while (x >= 0) {
+      if (MC_random(0,1) == 0) {
+        x -= 1;
+      } else {
+        x += 1;
+      }
+      printf("x=%d\n", x);
+      MPI_Send(&x, 1, MPI_INT, 0, 42, MPI_COMM_WORLD);
+    }
+  }
+
+  MPI_Finalize();
+  
+       return 0;
+}