X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/2db530ae7af2f2d5b9b80877117816279279d7c3..7fdb9c9ac44fba9f76a3b45d032561995bec2e0d:/src/surf/sg_platf.c

diff --git a/src/surf/sg_platf.c b/src/surf/sg_platf.c
index 5cdf39b4bc..d836e9fd93 100644
--- a/src/surf/sg_platf.c
+++ b/src/surf/sg_platf.c
@@ -8,6 +8,7 @@
 #include "xbt/log.h"
 #include "xbt/str.h"
 #include "xbt/dict.h"
+#include "xbt/RngStream.h"
 #include "simgrid/platf_interface.h"
 
 XBT_LOG_EXTERNAL_DEFAULT_CATEGORY(surf_parse);
@@ -27,6 +28,8 @@ xbt_dynar_t sg_platf_mount_cb_list = NULL; // of sg_platf_storage_cb_t
 
 static int surf_parse_models_setup_already_called;
 
+/* one RngStream for the platform, to respect some statistic rules */
+static RngStream sg_platf_rng_stream = NULL;
 
 /** Module management function: creates all internal data structures */
 void sg_platf_init(void) {
@@ -140,7 +143,7 @@ void sg_platf_end() {
 
 static int surf_parse_models_setup_already_called = 0;
 
-void sg_platf_new_AS_begin(const char *id, const char *routing) {
+void sg_platf_new_AS_begin(const char *id, int routing) {
   unsigned int iterator;
   sg_platf_AS_begin_cb_t fun;
 
@@ -211,3 +214,20 @@ void sg_platf_mstorage_add_cb(sg_platf_mstorage_cb_t fct) {
 void sg_platf_mount_add_cb(sg_platf_mount_cb_t fct) {
   xbt_dynar_push(sg_platf_mount_cb_list, &fct);
 }
+
+
+void sg_platf_rng_stream_init(unsigned long seed[6]) {
+  RngStream_SetPackageSeed(seed);
+  sg_platf_rng_stream = RngStream_CreateStream(NULL);
+}
+
+RngStream sg_platf_rng_stream_get(const char* id) {
+  RngStream stream = NULL;
+  unsigned int id_hash;
+  
+  stream = RngStream_CopyStream(sg_platf_rng_stream);
+  id_hash = xbt_str_hash(id);
+  RngStream_AdvanceState(stream, 0, (long)id_hash);
+  
+  return stream;
+}