X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/6f04e042bc53b073be4592ad529adb45ac59b777..82904dcc37f75453c571a1a74e67c1ba282ebe23:/src/msg/task.c

diff --git a/src/msg/task.c b/src/msg/task.c
index 62bcdac519..b0df136d09 100644
--- a/src/msg/task.c
+++ b/src/msg/task.c
@@ -1,8 +1,5 @@
-/*     $Id$      */
-
-/* Copyright (c) 2002-2007 Arnaud Legrand.                                  */
-/* Copyright (c) 2007 Bruno Donassolo.                                      */
-/* All rights reserved.                                                     */
+/* Copyright (c) 2004, 2005, 2006, 2007, 2008, 2009, 2010. The SimGrid Team.
+ * All rights reserved.                                                     */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
@@ -26,6 +23,9 @@
  *  <em>message size</em> and some <em>private data</em>.
  */
 
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_task, msg,
+                                "Logging specific to MSG (task)");
+
 /********************************* Task **************************************/
 /** \ingroup m_task_management
  * \brief Creates a new #m_task_t.
@@ -47,7 +47,7 @@
  * \return The new corresponding object.
  */
 m_task_t MSG_task_create(const char *name, double compute_duration,
-			 double message_size, void *data)
+                         double message_size, void *data)
 {
   m_task_t task = xbt_new(s_m_task_t, 1);
   simdata_task_t simdata = xbt_new(s_simdata_task_t, 1);
@@ -57,21 +57,23 @@ m_task_t MSG_task_create(const char *name, double compute_duration,
   task->data = data;
 
   /* Simulator Data */
+  simdata->host_nb = 0;
   simdata->computation_amount = compute_duration;
   simdata->message_size = message_size;
   simdata->rate = -1.0;
   simdata->priority = 1.0;
-  simdata->using = 1;
+  simdata->isused = 0;
   simdata->sender = NULL;
   simdata->receiver = NULL;
-  simdata->cond = SIMIX_cond_init();
-  simdata->mutex = SIMIX_mutex_init();
   simdata->compute = NULL;
   simdata->comm = NULL;
 
   simdata->host_list = NULL;
   simdata->comp_amount = NULL;
   simdata->comm_amount = NULL;
+#ifdef HAVE_TRACING
+  TRACE_msg_task_create(task);
+#endif
 
   return task;
 }
@@ -79,16 +81,29 @@ m_task_t MSG_task_create(const char *name, double compute_duration,
 /** \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)
 {
-  xbt_assert0((task != NULL), "Invalid parameter");
+  xbt_assert((task != NULL), "Invalid parameter");
 
   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_assert((task != NULL), "Invalid parameter");
+
+  task->data = data;
+}
+
 /** \ingroup m_task_management
  * \brief Return the sender of a #m_task_t.
  *
@@ -96,7 +111,7 @@ void *MSG_task_get_data(m_task_t task)
  */
 m_process_t MSG_task_get_sender(m_task_t task)
 {
-  xbt_assert0(task, "Invalid parameters");
+  xbt_assert(task, "Invalid parameters");
   return ((simdata_task_t) task->simdata)->sender;
 }
 
@@ -107,7 +122,7 @@ m_process_t MSG_task_get_sender(m_task_t task)
  */
 m_host_t MSG_task_get_source(m_task_t task)
 {
-  xbt_assert0(task, "Invalid parameters");
+  xbt_assert(task, "Invalid parameters");
   return ((simdata_task_t) task->simdata)->source;
 }
 
@@ -118,10 +133,20 @@ m_host_t MSG_task_get_source(m_task_t task)
  */
 const char *MSG_task_get_name(m_task_t task)
 {
-  xbt_assert0(task, "Invalid parameters");
+  xbt_assert(task, "Invalid parameters");
   return task->name;
 }
 
+/** \ingroup m_task_management
+ * \brief Return the name of a #m_task_t.
+ *
+ * This functions allows to associate a name to a task
+ */
+void MSG_task_set_name(m_task_t task, const char *name)
+{
+  xbt_assert(task, "Invalid parameters");
+  task->name = xbt_strdup(name);
+}
 
 /** \ingroup m_task_management
  * \brief Destroy a #m_task_t.
@@ -132,28 +157,24 @@ const char *MSG_task_get_name(m_task_t task)
 MSG_error_t MSG_task_destroy(m_task_t task)
 {
   smx_action_t action = NULL;
-  xbt_assert0((task != NULL), "Invalid parameter");
+  xbt_assert((task != NULL), "Invalid parameter");
 
-  /* why? if somebody is using, then you can't free! ok... but will return MSG_OK? when this task will be destroyed? isn't the user code wrong? */
-  task->simdata->using--;
-  if (task->simdata->using > 0)
-    return MSG_OK;
-
-  if (task->name)
-    free(task->name);
+  if (task->simdata->isused) {
+    /* the task is still being used, it may be an unfinished dsend */
+    MSG_task_cancel(task);
+  }
+#ifdef HAVE_TRACING
+  TRACE_msg_task_destroy(task);
+#endif
 
-  SIMIX_cond_destroy(task->simdata->cond);
-  SIMIX_mutex_destroy(task->simdata->mutex);
+  xbt_free(task->name);
 
   action = task->simdata->compute;
   if (action)
-    SIMIX_action_destroy(action);
-  action = task->simdata->comm;
-  if (action)
-    SIMIX_action_destroy(action);
+    SIMIX_req_host_execution_destroy(action);
+
   /* parallel tasks only */
-  if (task->simdata->host_list)
-    xbt_free(task->simdata->host_list);
+  xbt_free(task->simdata->host_list);
 
   /* free main structures */
   xbt_free(task->simdata);
@@ -165,23 +186,28 @@ MSG_error_t MSG_task_destroy(m_task_t task)
 
 /** \ingroup m_task_management
  * \brief Cancel a #m_task_t.
- * \param task the taskt to cancel. If it was executed or transfered, it 
+ * \param task the task to cancel. If it was executed or transfered, it
           stops the process that were working on it.
  */
 MSG_error_t MSG_task_cancel(m_task_t task)
 {
-  xbt_assert0((task != NULL), "Invalid parameter");
+  xbt_assert((task != NULL), "Invalid parameter");
 
   if (task->simdata->compute) {
-    SIMIX_action_cancel(task->simdata->compute);
-    return MSG_OK;
+    SIMIX_req_host_execution_cancel(task->simdata->compute);
   }
-  if (task->simdata->comm) {
-    SIMIX_action_cancel(task->simdata->comm);
-    return MSG_OK;
+  else if (task->simdata->comm) {
+    SIMIX_req_comm_cancel(task->simdata->comm);
+    task->simdata->isused = 0;
   }
-
-  return MSG_FATAL;
+  else {
+    static int warned = 0;
+    if (!warned) {
+      XBT_WARN("Cannot cancel a non-running task");
+      warned = 1;
+    }
+  }
+  return MSG_OK;
 }
 
 /** \ingroup m_task_management
@@ -190,36 +216,79 @@ MSG_error_t MSG_task_cancel(m_task_t task)
  */
 double MSG_task_get_compute_duration(m_task_t task)
 {
-  xbt_assert0((task != NULL)
-	      && (task->simdata != NULL), "Invalid parameter");
+  xbt_assert((task != NULL)
+              && (task->simdata != NULL), "Invalid parameter");
 
   return task->simdata->computation_amount;
 }
 
+
+/** \ingroup m_task_management
+ * \brief set the computation amount needed to process a task #m_task_t.
+ */
+
+void MSG_task_set_compute_duration(m_task_t task,
+                                   double computation_amount)
+{
+  xbt_assert(task, "Invalid parameter");
+  task->simdata->computation_amount = computation_amount;
+
+}
+
 /** \ingroup m_task_management
  * \brief Returns the remaining computation amount of a task #m_task_t.
  *
  */
 double MSG_task_get_remaining_computation(m_task_t task)
 {
-  xbt_assert0((task != NULL)
-	      && (task->simdata != NULL), "Invalid parameter");
+  xbt_assert((task != NULL)
+              && (task->simdata != NULL), "Invalid parameter");
 
   if (task->simdata->compute) {
-    return SIMIX_action_get_remains(task->simdata->compute);
+    return SIMIX_req_host_execution_get_remains(task->simdata->compute);
   } else {
     return task->simdata->computation_amount;
   }
 }
 
+/** \ingroup m_task_management
+ * \brief Returns the total amount received by a task #m_task_t.
+ *        If the communication does not exist it will return 0.
+ *        So, if the communication has FINISHED or FAILED it returns
+ *        zero.
+ */
+double MSG_task_get_remaining_communication(m_task_t task)
+{
+  xbt_assert((task != NULL)
+              && (task->simdata != NULL), "Invalid parameter");
+  XBT_DEBUG("calling SIMIX_req_communication_get_remains(%p)",
+         task->simdata->comm);
+  return SIMIX_req_comm_get_remains(task->simdata->comm);
+}
+
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+/** \ingroup m_task_management
+ * \brief Return 1 if communication task is limited by latency, 0 otherwise
+ *
+ */
+int MSG_task_is_latency_bounded(m_task_t task)
+{
+  xbt_assert((task != NULL)
+              && (task->simdata != NULL), "Invalid parameter");
+  XBT_DEBUG("calling SIMIX_req_communication_is_latency_bounded(%p)",
+         task->simdata->comm);
+  return SIMIX_req_comm_is_latency_bounded(task->simdata->comm);
+}
+#endif
+
 /** \ingroup m_task_management
  * \brief Returns the size of the data attached to a task #m_task_t.
  *
  */
 double MSG_task_get_data_size(m_task_t task)
 {
-  xbt_assert0((task != NULL)
-	      && (task->simdata != NULL), "Invalid parameter");
+  xbt_assert((task != NULL)
+              && (task->simdata != NULL), "Invalid parameter");
 
   return task->simdata->message_size;
 }
@@ -234,11 +303,11 @@ double MSG_task_get_data_size(m_task_t task)
  */
 void MSG_task_set_priority(m_task_t task, double priority)
 {
-  xbt_assert0((task != NULL)
-	      && (task->simdata != NULL), "Invalid parameter");
+  xbt_assert((task != NULL)
+              && (task->simdata != NULL), "Invalid parameter");
 
   task->simdata->priority = 1 / priority;
   if (task->simdata->compute)
-    SIMIX_action_set_priority(task->simdata->compute,
-			      task->simdata->priority);
+    SIMIX_req_host_execution_set_priority(task->simdata->compute,
+                                      task->simdata->priority);
 }