X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/e6692e68ddfe1ef3234cacab53edb44277ae4405..d0088c5ca40d4af018ea5f874550e1405fef9a93:/include/gras/process.h

diff --git a/include/gras/process.h b/include/gras/process.h
index d318c9a0f6..5ffcad6fc6 100644
--- a/include/gras/process.h
+++ b/include/gras/process.h
@@ -34,27 +34,36 @@ 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()