Add a MSG_task_set_data() function

[simgrid.git] / src / msg / task.c

diff --git a/src/msg/task.c b/src/msg/task.c
index b14d7c8..6d4bbbf 100644 (file)
--- a/src/msg/task.c
+++ b/src/msg/task.c
@@ -73,15 +73,18 @@ m_task_t MSG_task_create(const char *name, double compute_duration,
   simdata->comp_amount = NULL;
   simdata->comm_amount = NULL;
 
-  CINFO2(root,"Created task %p: %s",task,name);
-
   return task;
 }
 
+/** prevent the task from being destroyed too quickly (but also prevent it from being sent). Mainly useful in bindings */
+void MSG_task_ref(m_task_t t) {
+  t->simdata->refcount++;
+}
+
 /** \ingroup m_task_management
  * \brief Return the user data of a #m_task_t.
  *
- * This functions checks whether \a task is a valid pointer or not and return
+ * This function checks whether \a task is a valid pointer or not and return
    the user data associated to \a task if it is possible.
  */
 void *MSG_task_get_data(m_task_t task)
@@ -91,6 +94,19 @@ void *MSG_task_get_data(m_task_t task)
   return (task->data);
 }
 
+/** \ingroup m_task_management
+ * \brief Sets the user data of a #m_task_t.
+ *
+ * This function allows to associate a new pointer to
+   the user data associated of \a task.
+ */
+void MSG_task_set_data(m_task_t task,void *data)
+{
+  xbt_assert0((task != NULL), "Invalid parameter");
+
+  task->data = data;
+}
+
 /** \ingroup m_task_management
  * \brief Return the sender of a #m_task_t.
  *
@@ -180,8 +196,7 @@ MSG_error_t MSG_task_cancel(m_task_t task)
     SIMIX_communication_cancel(task->simdata->comm);
     return MSG_OK;
   }
-
-  return MSG_FATAL;
+  THROW_IMPOSSIBLE;
 }
 
 /** \ingroup m_task_management