X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/504b4d20dd2db9ea1eaa9c4b390b2a412d7c9779..64c0a3e0d8f5518e5f61a8043844c770280787f0:/include/gras/process.h

diff --git a/include/gras/process.h b/include/gras/process.h
index 335a9c11d2..5f4f2cac8d 100644
--- a/include/gras/process.h
+++ b/include/gras/process.h
@@ -10,14 +10,15 @@
 #ifndef GRAS_PROCESS_H
 #define GRAS_PROCESS_H
 
-#include "xbt/misc.h"  /* SG_BEGIN_DECL */
+#include "xbt/misc.h"           /* SG_BEGIN_DECL */
 #include "xbt/dict.h"
 
 SG_BEGIN_DECL()
 
-void gras_agent_spawn(const char *name, void *data, xbt_main_func_t code, int argc, char *argv[], xbt_dict_t properties);
-  
-  
+     void gras_agent_spawn(const char *name, void *data, xbt_main_func_t code,
+                           int argc, char *argv[], xbt_dict_t properties);
+
+
 /****************************************************************************/
 /* Manipulating User Data                                                   */
 /****************************************************************************/
@@ -32,7 +33,11 @@ void gras_agent_spawn(const char *name, void *data, xbt_main_func_t code, int ar
  * 
  * 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
- * retrieve a reference to it. 
+ * retrieve a reference to it.
+ * 
+ * 
+ * For more info on this, you may want to check the relevant lesson of the GRAS tutorial:
+ * \ref GRAS_tut_tour_globals
  */
 /* @{ */
 
@@ -40,19 +45,25 @@ void gras_agent_spawn(const char *name, void *data, xbt_main_func_t code, int ar
  * \brief Get the data associated with the current process.
  * \ingroup GRAS_globals
  */
-XBT_PUBLIC(void*) gras_userdata_get(void);
+XBT_PUBLIC(void *) gras_userdata_get(void);
 
 /**
  * \brief Set the data associated with the current process.
  * \ingroup GRAS_globals
  */
-XBT_PUBLIC(void) gras_userdata_set(void *ud);
+XBT_PUBLIC(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())
+/** \brief Malloc and set the data associated with the current process.
+ *
+ * @warning gras_userdata_new() expects the pointed type, not the
+ * pointer type. We know it'a a bit troublesome, but it seems like
+ * the only solution since this macro has to compute the size to
+ * malloc and should thus know the pointed type. 
+ *
+ * You'll find an example in the tutorial:  \ref GRAS_tut_tour_globals
+ */
+#define gras_userdata_new(type) ((type*)gras_userdata_set(xbt_new0(type,1)))
 /* @} */
 
 SG_END_DECL()
-
 #endif /* GRAS_PROCESS_H */
-