X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/3d630a8a0429ae6e380bf1e002a6e55c21cd078f..0ee6fdb41d9ba663184bdd4d48f79ef28a0e6fbb:/include/gras/process.h

diff --git a/include/gras/process.h b/include/gras/process.h
index 130960f248..ca99daceb8 100644
--- a/include/gras/process.h
+++ b/include/gras/process.h
@@ -10,9 +10,10 @@
 #ifndef GRAS_PROCESS_H
 #define GRAS_PROCESS_H
 
-#include "xbt/misc.h" /* BEGIN_DECL */
+#include "xbt/misc.h"  /* BEGIN_DECL */
+#include "xbt/error.h" /* xbt_error_t */
 
-BEGIN_DECL
+BEGIN_DECL()
 
 /* **************************************************************************
  * Initializing the processes
@@ -34,29 +35,38 @@ xbt_error_t gras_process_exit(void);
 /****************************************************************************/
 /* Manipulating User Data                                                   */
 /****************************************************************************/
-/**
- * gras_userdata_get:
- *
- * Get the data associated with the current process.
+
+/** \addtogroup GRAS_globals
+ *  \brief Handling global variables so that it works on simulator (Virtualization).
+ * 
+ * In GRAS, using globals is forbidden since the "processes" will
+ * sometimes run as a thread inside the same process (namely, in
+ * simulation mode). So, you have to put all globals in a structure, and
+ * let GRAS handle it.
+ * 
+ * Use the \ref gras_userdata_new macro to create a new user data (or malloc it
+ * and use \ref gras_userdata_set yourself), and \ref gras_userdata_get to
+ * retrive a reference to it. 
  */
-void *gras_userdata_get(void);
+/* @{ */
 
 /**
- * gras_userdata_set:
- *
- * Set the data associated with the current process.
+ * \brief Get the data associated with the current process.
+ * \ingroup GRAS_globals
  */
-void gras_userdata_set(void *ud);
+void *gras_userdata_get(void);
 
 /**
- * gras_userdata_new:
- *
- * Malloc and set the data associated with the current process.
+ * \brief Set the data associated with the current process.
+ * \ingroup GRAS_globals
  */
+void gras_userdata_set(void *ud);
 
+/** \brief Malloc and set the data associated with the current process. */
 #define gras_userdata_new(type) (gras_userdata_set(xbt_new0(type,1)),gras_userdata_get())
+/* @} */
 
-END_DECL
+END_DECL()
 
 #endif /* GRAS_PROCESS_H */