X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/710e7c0ce3fce936637636f544019e89e8ef023d..2fad952ef4a63aedf6c8b2dc4e371de849f1e163:/src/msg/task.c
diff --git a/src/msg/task.c b/src/msg/task.c
index d0f600166c..80a7c72692 100644
--- a/src/msg/task.c
+++ b/src/msg/task.c
@@ -13,6 +13,18 @@ XBT_LOG_NEW_DEFAULT_SUBCATEGORY(task, msg,
static char sprint_buffer[64];
+/** \defgroup m_task_management Managing functions of Tasks
+ * \brief This section describes the task structure of MSG
+ * (#m_task_t) and the functions for managing it.
+ *
+ * Since most scheduling algorithms rely on a concept of task
+ * that can be either computed locally or
+ * transferred on another processor, it seems to be the
+ * right level of abstraction for our purposes. A task
+ * may then be defined by a computing amount, a
+ * message size and some private data.
+ */
+
/********************************* Task **************************************/
/** \ingroup m_task_management
* \brief Creates a new #m_task_t.
@@ -48,9 +60,11 @@ m_task_t MSG_task_create(const char *name, long double compute_duration,
simdata->sleeping = xbt_dynar_new(sizeof(m_process_t),NULL);
simdata->computation_amount = compute_duration;
simdata->message_size = message_size;
+ simdata->rate = -1.0;
simdata->using = 1;
simdata->sender = NULL;
+
return task;
}
@@ -67,6 +81,18 @@ void *MSG_task_get_data(m_task_t task)
return (task->data);
}
+/** \ingroup m_task_management
+ * \brief Return the sender of a #m_task_t.
+ *
+ * This functions returns the #m_process_t which sent this task
+ */
+m_process_t MSG_task_get_sender(m_task_t task)
+{
+ xbt_assert0(task, "Invalid parameters");
+ return ((simdata_task_t) task->simdata)->sender;
+}
+
+
/** \ingroup m_task_management
* \brief Destroy a #m_task_t.
*
@@ -80,12 +106,13 @@ MSG_error_t MSG_task_destroy(m_task_t task)
int i;
xbt_assert0((task != NULL), "Invalid parameter");
- xbt_assert0((xbt_dynar_length(task->simdata->sleeping)==0),
- "Task still used. Cannot destroy it now!");
task->simdata->using--;
if(task->simdata->using>0) return MSG_OK;
+ xbt_assert0((xbt_dynar_length(task->simdata->sleeping)==0),
+ "Task still used. There is a problem. Cannot destroy it now!");
+
if(task->name) xbt_free(task->name);
xbt_dynar_free(&(task->simdata->sleeping));
@@ -154,13 +181,20 @@ MSG_error_t MSG_task_destroy(m_task_t task)
MSG_error_t __MSG_task_wait_event(m_process_t process, m_task_t task)
{
+ int _cursor;
+ m_process_t proc = NULL;
+
xbt_assert0(((task != NULL)
&& (task->simdata != NULL)), "Invalid parameters");
- xbt_dynar_push(task->simdata->sleeping, process);
+ xbt_dynar_push(task->simdata->sleeping, &process);
process->simdata->waiting_task = task;
- xbt_context_yield(process->simdata->context);
+ xbt_context_yield();
process->simdata->waiting_task = NULL;
+ xbt_dynar_foreach(task->simdata->sleeping,_cursor,proc) {
+ if(proc==process)
+ xbt_dynar_remove_at(task->simdata->sleeping,_cursor,&proc);
+ }
return MSG_OK;
}