X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/8f47d235ddc4c9e9d4ca548fc157fbf28f93a7a9..b38d5c15755a98cc7ef99a0a9c4936357dbedce3:/src/simix/smx_network.c

diff --git a/src/simix/smx_network.c b/src/simix/smx_network.c
index 573cabd16b..c8c5ac9363 100644
--- a/src/simix/smx_network.c
+++ b/src/simix/smx_network.c
@@ -362,7 +362,7 @@ void SIMIX_network_copy_data(smx_comm_t comm)
   size_t buff_size = comm->src_buff_size;
 
   /* If there is no data to be copy then return */
-  if(!comm->src_buff || !comm->dst_buff)
+  if(!comm->src_buff || !comm->dst_buff || comm->copied == 1)
     return;
 
   DEBUG6("Copying comm %p data from %s (%p) -> %s (%p) (%zu bytes)",
@@ -383,10 +383,9 @@ void SIMIX_network_copy_data(smx_comm_t comm)
     return;
   (*SIMIX_network_copy_data_callback)(comm, buff_size);
 
-  /* Set the buffers to null so we copy data only once */
+  /* Set the copied flag so we copy data only once */
   /* (this function might be called from both communication ends)*/
-  comm->src_buff = NULL;
-  comm->dst_buff = NULL;
+  comm->copied = 1;
   
   /* pimple to display the message sizes */
   {