Merge tag 'v3_9_90' into hypervisor

[simgrid.git] / src / surf / maxmin.c

diff --git a/src/surf/maxmin.c b/src/surf/maxmin.c
index 052b382..00d24c4 100644 (file)
--- a/src/surf/maxmin.c
+++ b/src/surf/maxmin.c
@@ -1,4 +1,4 @@
-/* Copyright (c) 2004-2011. The SimGrid Team.
+/* Copyright (c) 2004-2013. The SimGrid Team.
  * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
@@ -973,3 +973,30 @@ static void lmm_remove_all_modified_set(lmm_system_t sys)
   }
   xbt_swag_reset(&sys->modified_constraint_set);
 }
+
+/**
+ *  Returns total resource load
+ *
+ *  \param cnst the lmm_constraint_t associated to the resource
+ *
+ */
+double lmm_constraint_get_usage(lmm_constraint_t cnst) {
+   double usage = 0.0;
+   xbt_swag_t elem_list = &(cnst->element_set);
+   lmm_element_t elem = NULL;
+
+   xbt_swag_foreach(elem, elem_list) {
+     /* 0-weighted elements (ie, sleep actions) are at the end of the swag and we don't want to consider them */
+     if (elem->variable->weight <= 0)
+       break;
+     if ((elem->value > 0)) {
+       if (cnst->shared)
+         usage += elem->value * elem->variable->value;
+       else if (usage < elem->value * elem->variable->value)
+         usage = elem->value * elem->variable->value;
+     }
+   }
+  return usage;
+}
+
+