X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e7a324dffea686936a8e66d8f30fb88883f696ca..eb06cc6409cdd8e1e9955e4455d104ca0cf437b3:/examples/smpi/mc/mutual_exclusion.c

diff --git a/examples/smpi/mc/mutual_exclusion.c b/examples/smpi/mc/mutual_exclusion.c
index 7ed894bb60..d71f41ba9a 100644
--- a/examples/smpi/mc/mutual_exclusion.c
+++ b/examples/smpi/mc/mutual_exclusion.c
@@ -13,15 +13,14 @@
 #define RELEASE_TAG 2
 
 int main(int argc, char **argv){
-
-  int err, size, rank;
+  int size;
+  int rank;
   int recv_buff;
   MPI_Status status;
-  int CS_used = 0;
   xbt_dynar_t requests = xbt_dynar_new(sizeof(int), NULL);
-  
+
   /* Initialize MPI */
-  err = MPI_Init(&argc, &argv);
+  int err = MPI_Init(&argc, &argv);
   if(err !=  MPI_SUCCESS){
     printf("MPI initialization failed !\n");
     exit(1);
@@ -35,6 +34,7 @@ int main(int argc, char **argv){
   MPI_Comm_rank(MPI_COMM_WORLD, &rank);
 
   if(rank == 0){ /* Coordinator */
+    int CS_used = 0;
     while(1){
       MPI_Recv(&recv_buff, 1, MPI_INT, MPI_ANY_SOURCE, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
       if(status.MPI_TAG == REQUEST_TAG){
@@ -48,8 +48,7 @@ int main(int argc, char **argv){
         }
       }else{
         if(!xbt_dynar_is_empty(requests)){
-          printf("CS release. Grant to queued requests (queue size: %lu)",
-              xbt_dynar_length(requests));
+          printf("CS release. Grant to queued requests (queue size: %lu)", xbt_dynar_length(requests));
           xbt_dynar_shift(requests, &recv_buff);
           MPI_Send(&rank, 1, MPI_INT, recv_buff, GRANT_TAG, MPI_COMM_WORLD);
           CS_used = 1;
@@ -63,12 +62,11 @@ int main(int argc, char **argv){
     while(1){
       printf("%d asks the request.\n", rank);
       MPI_Send(&rank, 1, MPI_INT, 0, REQUEST_TAG, MPI_COMM_WORLD);
-    
+
       MPI_Recv(&recv_buff, 1, MPI_INT, 0, MPI_ANY_TAG, MPI_COMM_WORLD, &status);
-    
+
       printf("%d got the answer. Release it.\n", rank);
       MPI_Send(&rank, 1, MPI_INT, 0, RELEASE_TAG, MPI_COMM_WORLD);
-    
     }
   }