X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/d28b8ba7485f186918726a6672472dd30fedcc40..f4a258218681d1002c99d4556ba4b21bc6a6adff:/src/msg/m_process.c

diff --git a/src/msg/m_process.c b/src/msg/m_process.c
index f43f114201..3ecbc09eec 100644
--- a/src/msg/m_process.c
+++ b/src/msg/m_process.c
@@ -5,16 +5,17 @@
 /* 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. */
 
-#include"private.h"
-#include"xbt/sysdep.h"
-#include "xbt/error.h"
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(m_process, msg,
+#include "private.h"
+#include "xbt/sysdep.h"
+#include "xbt/log.h"
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(msg_process, msg,
 				"Logging specific to MSG (process)");
 
 /** \defgroup m_process_management Management Functions of Agents
  *  \brief This section describes the agent structure of MSG
  *  (#m_process_t) and the functions for managing it.
- *
+ *    \htmlonly <!-- DOXYGEN_NAVBAR_LABEL="Agents" --> \endhtmlonly
+ * 
  *  We need to simulate many independent scheduling decisions, so
  *  the concept of <em>process</em> is at the heart of the
  *  simulator. A process may be defined as a <em>code</em>, with
@@ -50,7 +51,9 @@ static void MSG_process_cleanup(void *arg)
   xbt_fifo_remove(msg_global->process_to_run, arg);
   xbt_fifo_remove(((m_process_t) arg)->simdata->host->simdata->process_list, arg);
   free(((m_process_t) arg)->name);
+  ((m_process_t) arg)->name = NULL;
   free(((m_process_t) arg)->simdata);
+  ((m_process_t) arg)->simdata = NULL;
   free(arg);
 }
 
@@ -69,7 +72,7 @@ static void MSG_process_cleanup(void *arg)
    name contains the word get), in \ref m_task_management (to create
    or destroy some #m_task_t for example) and in \ref
    msg_gos_functions (to handle file transfers and task processing).
- * \param data a pointer to any data may want to attach to the new
+ * \param data a pointer to any data one may want to attach to the new
    object.  It is for user-level information and can be NULL. It can
    be retrieved with the function \ref MSG_process_get_data.
  * \param host the location where the new agent is executed.
@@ -111,15 +114,17 @@ m_process_t MSG_process_create_with_arguments(const char *name,
   process->simdata = simdata;
   process->data = data;
 
-  xbt_fifo_push(host->simdata->process_list, process);
+  xbt_fifo_unshift(host->simdata->process_list, process);
 
-  /* /////////////// FIX du current_process !!! ////////////// */
+  /* *************** FIX du current_process !!! *************** */
   self = msg_global->current_process;
   xbt_context_start(process->simdata->context);
   msg_global->current_process = self;
 
-  xbt_fifo_push(msg_global->process_list, process);
-  xbt_fifo_push(msg_global->process_to_run, process);
+  xbt_fifo_unshift(msg_global->process_list, process);
+  DEBUG2("Inserting %s(%s) in the to_run list",process->name,
+	 host->name);
+  xbt_fifo_unshift(msg_global->process_to_run, process);
 
   PAJE_PROCESS_NEW(process);
 
@@ -196,7 +201,7 @@ MSG_error_t MSG_process_change_host(m_process_t process, m_host_t host)
 
   xbt_fifo_remove(simdata->host->simdata->process_list,process);
   simdata->host = host;
-  xbt_fifo_push(host->simdata->process_list,process);
+  xbt_fifo_unshift(host->simdata->process_list,process);
 
   return MSG_OK;
 }
@@ -344,11 +349,12 @@ MSG_error_t MSG_process_suspend(m_process_t process)
 {
   simdata_process_t simdata = NULL;
   simdata_task_t simdata_task = NULL;
-  int i;
+
+  XBT_IN2("(%p(%s))", process, process->name);
 
   xbt_assert0(((process) && (process->simdata)), "Invalid parameters");
 
-  PAJE_PROCESS_PUSH_STATE(process,"S");
+  PAJE_PROCESS_PUSH_STATE(process,"S",NULL);
 
   if(process!=MSG_process_self()) {
     simdata = process->simdata;
@@ -358,7 +364,10 @@ MSG_error_t MSG_process_suspend(m_process_t process)
     simdata_task = simdata->waiting_task->simdata;
 
     simdata->suspended = 1;
-    if(simdata->blocked) return MSG_OK;
+    if(simdata->blocked) {
+      XBT_OUT;
+      return MSG_OK;
+    }
 
     xbt_assert0(((simdata_task->compute)||(simdata_task->comm))&&
 		!((simdata_task->compute)&&(simdata_task->comm)),
@@ -381,6 +390,7 @@ MSG_error_t MSG_process_suspend(m_process_t process)
 
     MSG_task_destroy(dummy);
   }
+  XBT_OUT;
   return MSG_OK;
 }
 
@@ -394,23 +404,30 @@ MSG_error_t MSG_process_resume(m_process_t process)
 {
   simdata_process_t simdata = NULL;
   simdata_task_t simdata_task = NULL;
-  int i;
 
   xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
   CHECK_HOST();
 
-  simdata = process->simdata;
+  XBT_IN2("(%p(%s))", process, process->name);
 
+  if(process == MSG_process_self()) {
+    XBT_OUT;
+    MSG_RETURN(MSG_OK);
+  }
+
+  simdata = process->simdata;
 
   if(simdata->blocked) {
     PAJE_PROCESS_POP_STATE(process);
 
     simdata->suspended = 0; /* He'll wake up by itself */
+    XBT_OUT;
     MSG_RETURN(MSG_OK);
   }
 
   if(!(simdata->waiting_task)) {
     xbt_assert0(0,"Process not waiting for anything else. Weird !");
+    XBT_OUT;
     return MSG_WARNING;
   }
   simdata_task = simdata->waiting_task->simdata;
@@ -425,6 +442,7 @@ MSG_error_t MSG_process_resume(m_process_t process)
     surf_workstation_resource->common_public->resume(simdata_task->comm);
   }
 
+  XBT_OUT;
   MSG_RETURN(MSG_OK);
 }
 
@@ -434,48 +452,61 @@ MSG_error_t MSG_process_resume(m_process_t process)
  * This checks whether a process is suspended or not by inspecting the
  * task on which it was waiting for the completion.
  */
-int MSG_process_isSuspended(m_process_t process)
+int MSG_process_is_suspended(m_process_t process)
 {
   xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
 
   return (process->simdata->suspended);
 }
 
-MSG_error_t __MSG_process_block(void)
+int __MSG_process_block(double max_duration, const char *info)
 {
   m_process_t process = MSG_process_self();
-
   m_task_t dummy = MSG_TASK_UNINITIALIZED;
-  dummy = MSG_task_create("blocked", 0.0, 0, NULL);
+  char blocked_name[512];
+  snprintf(blocked_name,512,"blocked [%s] (%s:%s)",
+	  info, process->name, process->simdata->host->name);
+
+  XBT_IN1(": max_duration=%g",max_duration);
+
+  dummy = MSG_task_create(blocked_name, 0.0, 0, NULL);
   
-  PAJE_PROCESS_PUSH_STATE(process,"B");
+  PAJE_PROCESS_PUSH_STATE(process,"B",NULL);
 
   process->simdata->blocked=1;
   __MSG_task_execute(process,dummy);
   surf_workstation_resource->common_public->suspend(dummy->simdata->compute);
+  if(max_duration>=0)
+    surf_workstation_resource->common_public->set_max_duration(dummy->simdata->compute, 
+							       max_duration);
   __MSG_wait_for_computation(process,dummy);
+  MSG_task_destroy(dummy);
   process->simdata->blocked=0;
 
-  if(process->simdata->suspended)
+  if(process->simdata->suspended) {
+    DEBUG0("I've been suspended in the meantime");    
     MSG_process_suspend(process);
-  
-  MSG_task_destroy(dummy);
+    DEBUG0("I've been resumed, let's keep going");    
+  }
 
-  return MSG_OK;
+  XBT_OUT;
+  return 1;
 }
 
 MSG_error_t __MSG_process_unblock(m_process_t process)
 {
   simdata_process_t simdata = NULL;
   simdata_task_t simdata_task = NULL;
-  int i;
 
   xbt_assert0(((process != NULL) && (process->simdata)), "Invalid parameters");
   CHECK_HOST();
 
+  XBT_IN2(": %s unblocking %s", MSG_process_self()->name,process->name);
+
   simdata = process->simdata;
   if(!(simdata->waiting_task)) {
     xbt_assert0(0,"Process not waiting for anything else. Weird !");
+    XBT_OUT;
     return MSG_WARNING;
   }
   simdata_task = simdata->waiting_task->simdata;
@@ -486,6 +517,8 @@ MSG_error_t __MSG_process_unblock(m_process_t process)
 
   PAJE_PROCESS_POP_STATE(process);
 
+  XBT_OUT;
+
   MSG_RETURN(MSG_OK);
 }