X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/1de0605ac65310f01fd7e86562216bab56b6b780..5fb26c655edc451b9d500be9a443128dc8e5e732:/examples/msg/actions/actions.c

diff --git a/examples/msg/actions/actions.c b/examples/msg/actions/actions.c
index 0a92faf118..b8eb96aa0c 100644
--- a/examples/msg/actions/actions.c
+++ b/examples/msg/actions/actions.c
@@ -1,6 +1,5 @@
-/* 	$Id$	 */
-
-/* Copyright (c) 2009. The SimGrid team. All rights reserved.               */
+/* Copyright (c) 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. */
@@ -8,104 +7,128 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include "msg/msg.h"            /* Yeah! If you want to use msg, you need to include msg/msg.h */
+#include "simix/simix.h"        /* semaphores for the barrier */
 #include "xbt.h"                /* calloc, printf */
 #include "simgrid_config.h"     /* getline */
 
-XBT_LOG_NEW_DEFAULT_CATEGORY(msg_test,
-                 "Messages specific for this msg example");
-int communicator_size=0;
+XBT_LOG_NEW_DEFAULT_CATEGORY(actions,
+                             "Messages specific for this msg example");
+int communicator_size = 0;
 
-typedef struct coll_ctr_t{
+typedef struct coll_ctr_t {
   int bcast_counter;
   int reduce_counter;
   int allReduce_counter;
 } *coll_ctr;
 
 /* Helper function */
-static double parse_double(const char *string) {
+static double parse_double(const char *string)
+{
   double value;
   char *endptr;
 
-  value=strtod(string, &endptr);
+  value = strtod(string, &endptr);
   if (*endptr != '\0')
-	  THROW1(unknown_error, 0, "%s is not a double", string);
+    THROW1(unknown_error, 0, "%s is not a double", string);
   return value;
 }
 
 
 /* My actions */
-static void send(xbt_dynar_t action)
+static void action_send(xbt_dynar_t action)
 {
-  char *name = xbt_str_join(action, " ");
-  char *to = xbt_dynar_get_as(action, 2, char *);
+  char *name = NULL;
+  char to[250];
   char *size = xbt_dynar_get_as(action, 3, char *);
   double clock = MSG_get_clock();
+  sprintf(to, "%s_%s", MSG_process_get_name(MSG_process_self()),
+          xbt_dynar_get_as(action, 2, char *));
+  //  char *to =  xbt_dynar_get_as(action, 2, char *);
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    name = xbt_str_join(action, " ");
+
   DEBUG2("Entering Send: %s (size: %lg)", name, parse_double(size));
   MSG_task_send(MSG_task_create(name, 0, parse_double(size), NULL), to);
-  INFO2("%s %f", name, MSG_get_clock()-clock);
-  free(name);
+  VERB2("%s %f", name, MSG_get_clock() - clock);
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    free(name);
 }
 
 
 static int spawned_send(int argc, char *argv[])
 {
-  DEBUG3("%s: Sending %s on %s", MSG_process_self()->name, 
-	argv[1],argv[0]);
-  MSG_task_send(MSG_task_create(argv[0], 0, parse_double(argv[1]), NULL), 
-		argv[0]);
+  DEBUG3("%s: Sending %s on %s", MSG_process_get_name(MSG_process_self()),
+         argv[1], argv[0]);
+  MSG_task_send(MSG_task_create(argv[0], 0, parse_double(argv[1]), NULL),
+                argv[0]);
   return 0;
 }
 
 static void Isend(xbt_dynar_t action)
 {
   char spawn_name[80];
-  char *to = xbt_dynar_get_as(action, 2, char *);
+  char to[250];
+  //  char *to = xbt_dynar_get_as(action, 2, char *);
   char *size = xbt_dynar_get_as(action, 3, char *);
   char **myargv;
   m_process_t comm_helper;
   double clock = MSG_get_clock();
-  DEBUG1("Isend on %s: spawn process ", 
-	 MSG_process_get_name(MSG_process_self()));
+  DEBUG1("Isend on %s: spawn process ",
+         MSG_process_get_name(MSG_process_self()));
+
+  sprintf(to, "%s_%s", MSG_process_get_name(MSG_process_self()),
+          xbt_dynar_get_as(action, 2, char *));
+  myargv = (char **) calloc(3, sizeof(char *));
 
-  myargv = (char**) calloc (3, sizeof (char*));
-  
   myargv[0] = xbt_strdup(to);
   myargv[1] = xbt_strdup(size);
   myargv[2] = NULL;
 
-  sprintf(spawn_name,"%s_wait",MSG_process_get_name(MSG_process_self()));
+  //    sprintf(spawn_name,"%s_wait",MSG_process_get_name(MSG_process_self()));
+  sprintf(spawn_name, "%s_wait", to);
   comm_helper =
-    MSG_process_create_with_arguments(spawn_name, spawned_send, 
-				      NULL, MSG_host_self(), 2, myargv);
-  INFO2("%s %f",xbt_str_join(action, " "), MSG_get_clock()-clock);
+      MSG_process_create_with_arguments(spawn_name, spawned_send,
+                                        NULL, MSG_host_self(), 2, myargv);
+  VERB2("%s %f", xbt_str_join(action, " "), MSG_get_clock() - clock);
 }
 
 
-static void recv(xbt_dynar_t action)
+static void action_recv(xbt_dynar_t action)
 {
-  char *name = xbt_str_join(action, " ");
+  char *name = NULL;
+  char mailbox_name[250];
   m_task_t task = NULL;
   double clock = MSG_get_clock();
   //FIXME: argument of action ignored so far; semantic not clear
   //char *from=xbt_dynar_get_as(action,2,char*);
+  sprintf(mailbox_name, "%s_%s", xbt_dynar_get_as(action, 2, char *),
+          MSG_process_get_name(MSG_process_self()));
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    name = xbt_str_join(action, " ");
 
   DEBUG1("Receiving: %s", name);
-  MSG_task_receive(&task, MSG_process_get_name(MSG_process_self()));
-  INFO2("%s %f", name, MSG_get_clock()-clock);
+  MSG_task_receive(&task, mailbox_name);
+  //  MSG_task_receive(&task, MSG_process_get_name(MSG_process_self()));
+  VERB2("%s %f", name, MSG_get_clock() - clock);
   MSG_task_destroy(task);
-  free(name);
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    free(name);
 }
 
 static int spawned_recv(int argc, char *argv[])
 {
   m_task_t task = NULL;
-  char* name = (char *) MSG_process_get_data(MSG_process_self());
-  DEBUG1("Receiving on %s", name);
-  MSG_task_receive(&task, name);
+  DEBUG1("Receiving on %s", argv[0]);
+  MSG_task_receive(&task, argv[0]);
   DEBUG1("Received %s", MSG_task_get_name(task));
   DEBUG1("waiter on %s", MSG_process_get_name(MSG_process_self()));
-  MSG_task_send(MSG_task_create("waiter",0,0,NULL),MSG_process_get_name(MSG_process_self())); 
-  
+  MSG_task_send(MSG_task_create("waiter", 0, 0, NULL),
+                MSG_process_get_name(MSG_process_self()));
+
   MSG_task_destroy(task);
   return 0;
 }
@@ -113,46 +136,76 @@ static int spawned_recv(int argc, char *argv[])
 
 static void Irecv(xbt_dynar_t action)
 {
-  char *name = xbt_str_join(action, " ");
+  char *name;
   m_process_t comm_helper;
+  char mailbox_name[250];
+  char **myargv;
   double clock = MSG_get_clock();
-  DEBUG1("Irecv on %s: spawn process ", 
-	 MSG_process_get_name(MSG_process_self()));
+  DEBUG1("Irecv on %s: spawn process ",
+         MSG_process_get_name(MSG_process_self()));
+
+  sprintf(mailbox_name, "%s_%s", xbt_dynar_get_as(action, 2, char *),
+          MSG_process_get_name(MSG_process_self()));
+  name = bprintf("%s_wait", MSG_process_get_name(MSG_process_self()));
+  myargv = (char **) calloc(2, sizeof(char *));
+
+  myargv[0] = xbt_strdup(mailbox_name);
+  myargv[1] = NULL;
+  comm_helper = MSG_process_create_with_arguments(name, spawned_recv,
+                                                  NULL, MSG_host_self(),
+                                                  1, myargv);
 
-  sprintf(name,"%s_wait",MSG_process_get_name(MSG_process_self()));
-  comm_helper = MSG_process_create(name,spawned_recv,
-                 (void *) MSG_process_get_name(MSG_process_self()),
-                 MSG_host_self());
+  VERB2("%s %f", xbt_str_join(action, " "), MSG_get_clock() - clock);
 
-  INFO2("%s %f",  xbt_str_join(action, " "), 
-	MSG_get_clock()-clock);
- 
   free(name);
 }
 
 
-static void wait(xbt_dynar_t action)
+static void action_wait(xbt_dynar_t action)
 {
-  char *name = xbt_str_join(action, " ");
+  char *name = NULL;
   char task_name[80];
   m_task_t task = NULL;
   double clock = MSG_get_clock();
-  
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    name = xbt_str_join(action, " ");
+
   DEBUG1("Entering %s", name);
-  sprintf(task_name,"%s_wait",MSG_process_get_name(MSG_process_self()));
-  MSG_task_receive(&task,task_name);
+  sprintf(task_name, "%s_wait", MSG_process_get_name(MSG_process_self()));
+  DEBUG1("wait: %s", task_name);
+  MSG_task_receive(&task, task_name);
   MSG_task_destroy(task);
-  INFO2("%s %f", name,	MSG_get_clock()-clock);
-  free(name);
+  VERB2("%s %f", name, MSG_get_clock() - clock);
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    free(name);
 }
 
-static void barrier (xbt_dynar_t action)
+/* FIXME: that's a poor man's implementation: we should take the message exchanges into account */
+smx_sem_t barrier_semaphore = NULL;
+static void barrier(xbt_dynar_t action)
 {
-  char *name = xbt_str_join(action, " ");
-  INFO1("barrier: %s", name);
-  
+  char *name = NULL;
 
-  free(name);
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    name = xbt_str_join(action, " ");
+
+  if (barrier_semaphore == NULL)        // first arriving on the barrier
+    barrier_semaphore = SIMIX_sem_init(0);
+  DEBUG2("Entering barrier: %s (capacity: %d)", name,SIMIX_sem_get_capacity(barrier_semaphore));
+
+  if (SIMIX_sem_get_capacity(barrier_semaphore) == -communicator_size + 1) {    // last arriving
+    SIMIX_sem_release_forever(barrier_semaphore);
+    SIMIX_sem_destroy(barrier_semaphore);
+    barrier_semaphore = NULL;
+  } else {                      // not last
+    SIMIX_sem_acquire(barrier_semaphore);
+  }
+
+  DEBUG1("Exiting barrier: %s", name);
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    free(name);
 
 }
 
@@ -162,138 +215,152 @@ static void reduce(xbt_dynar_t action)
   char *name;
   char task_name[80];
   char spawn_name[80];
+  char **myargv;
   char *comm_size = xbt_dynar_get_as(action, 2, char *);
   char *comp_size = xbt_dynar_get_as(action, 3, char *);
-  m_process_t comm_helper=NULL;
-  m_task_t task=NULL, comp_task=NULL;
-  const char* process_name;
+  m_process_t comm_helper = NULL;
+  m_task_t task = NULL, comp_task = NULL;
+  const char *process_name;
   double clock = MSG_get_clock();
-  
-  coll_ctr counters =  (coll_ctr) MSG_process_get_data(MSG_process_self());
+
+  coll_ctr counters = (coll_ctr) MSG_process_get_data(MSG_process_self());
 
   xbt_assert0(communicator_size, "Size of Communicator is not defined"
-	      ", can't use collective operations");
+              ", can't use collective operations");
 
   process_name = MSG_process_get_name(MSG_process_self());
 
-  if (!counters){
+  if (!counters) {
     DEBUG0("Initialize the counters");
-    counters = (coll_ctr) calloc (1, sizeof(struct coll_ctr_t));
+    counters = (coll_ctr) calloc(1, sizeof(struct coll_ctr_t));
   }
 
   name = bprintf("reduce_%d", counters->reduce_counter++);
 
-  if (!strcmp(process_name, "process0")){
-    DEBUG2("%s: %s is the Root",name, process_name);
-    for(i=1;i<communicator_size;i++){
-      sprintf(spawn_name,"%s_process%d", name, i);
-      sprintf(task_name,"%s_wait", spawn_name);
-      comm_helper = 
-	MSG_process_create(task_name, spawned_recv, 
-			   (void *) xbt_strdup(spawn_name),
-			   MSG_host_self());      
+  if (!strcmp(process_name, "p0")) {
+    DEBUG2("%s: %s is the Root", name, process_name);
+    for (i = 1; i < communicator_size; i++) {
+      sprintf(spawn_name, "%s_p%d_%s", name, i,
+              MSG_process_get_name(MSG_process_self()));
+      sprintf(task_name, "%s_wait", spawn_name);
+      myargv = (char **) calloc(2, sizeof(char *));
+
+      myargv[0] = xbt_strdup(spawn_name);
+      myargv[1] = NULL;
+
+      comm_helper =
+          MSG_process_create_with_arguments(task_name, spawned_recv,
+                                            NULL, MSG_host_self(),
+                                            1, myargv);
     }
 
-    for(i=1;i<communicator_size;i++){
-      sprintf(task_name,"%s_process%d_wait", name, i);
-      MSG_task_receive(&task,task_name);
+    for (i = 1; i < communicator_size; i++) {
+      sprintf(task_name, "%s_p%d_p0_wait", name, i);
+      MSG_task_receive(&task, task_name);
       MSG_task_destroy(task);
-      task=NULL;
+      task = NULL;
     }
 
-    comp_task = 
-      MSG_task_create("reduce_comp", parse_double(comp_size), 0, NULL);
+    comp_task =
+        MSG_task_create("reduce_comp", parse_double(comp_size), 0, NULL);
     DEBUG1("%s: computing 'reduce_comp'", name);
     MSG_task_execute(comp_task);
     MSG_task_destroy(comp_task);
     DEBUG1("%s: computed", name);
   } else {
     DEBUG2("%s: %s sends", name, process_name);
-    sprintf(task_name,"%s_%s", name, process_name);
+    sprintf(task_name, "%s_%s_p0", name, process_name);
     DEBUG1("put on %s", task_name);
     MSG_task_send(MSG_task_create(name, 0, parse_double(comm_size), NULL),
-		  task_name);
+                  task_name);
   }
 
-  MSG_process_set_data(MSG_process_self(), (void*)counters);
-  INFO2("%s %f", xbt_str_join(action, " "), MSG_get_clock()-clock);
+  MSG_process_set_data(MSG_process_self(), (void *) counters);
+  VERB2("%s %f", xbt_str_join(action, " "), MSG_get_clock() - clock);
   free(name);
 }
 
-static void bcast (xbt_dynar_t action)
+static void bcast(xbt_dynar_t action)
 {
   int i;
   char *name;
-  const char* process_name;
+  const char *process_name;
   char task_name[80];
   char spawn_name[80];
   char **myargv;
-  m_process_t comm_helper=NULL;
-  m_task_t task=NULL;
+  m_process_t comm_helper = NULL;
+  m_task_t task = NULL;
   char *size = xbt_dynar_get_as(action, 2, char *);
-  coll_ctr counters =  (coll_ctr) MSG_process_get_data(MSG_process_self());
+  coll_ctr counters = (coll_ctr) MSG_process_get_data(MSG_process_self());
   double clock = MSG_get_clock();
-  
+
   xbt_assert0(communicator_size, "Size of Communicator is not defined"
-	      ", can't use collective operations");
+              ", can't use collective operations");
 
 
   process_name = MSG_process_get_name(MSG_process_self());
-  if (!counters){
+  if (!counters) {
     DEBUG0("Initialize the counters");
-    counters = (coll_ctr) calloc (1, sizeof(struct coll_ctr_t));
+    counters = (coll_ctr) calloc(1, sizeof(struct coll_ctr_t));
   }
 
   name = bprintf("bcast_%d", counters->bcast_counter++);
-  if (!strcmp(process_name, "process0")){
-    DEBUG2("%s: %s is the Root",name, process_name);
+  if (!strcmp(process_name, "p0")) {
+    DEBUG2("%s: %s is the Root", name, process_name);
 
-    for(i=1;i<communicator_size;i++){
-      myargv = (char**) calloc (3, sizeof (char*));
+    for (i = 1; i < communicator_size; i++) {
+      myargv = (char **) calloc(3, sizeof(char *));
       myargv[0] = xbt_strdup(name);
       myargv[1] = xbt_strdup(size);
       myargv[2] = NULL;
 
-      sprintf(spawn_name,"%s_%d", myargv[0], i);
-      comm_helper = 
-	MSG_process_create_with_arguments(spawn_name, spawned_send, 
-					  NULL, MSG_host_self(), 2, myargv);
+      sprintf(spawn_name, "%s_%d", myargv[0], i);
+      comm_helper =
+          MSG_process_create_with_arguments(spawn_name, spawned_send,
+                                            NULL, MSG_host_self(), 2,
+                                            myargv);
     }
-    
-    for(i=1;i<communicator_size;i++){
-      sprintf(task_name,"process%d_wait", i);
+
+    for (i = 1; i < communicator_size; i++) {
+      sprintf(task_name, "p%d_wait", i);
       DEBUG1("get on %s", task_name);
-      MSG_task_receive(&task,task_name);      
+      MSG_task_receive(&task, task_name);
       MSG_task_destroy(task);
-      task=NULL;
+      task = NULL;
     }
     DEBUG2("%s: all messages sent by %s have been received",
-	  name, process_name);
+           name, process_name);
   } else {
     DEBUG2("%s: %s receives", name, process_name);
     MSG_task_receive(&task, name);
     MSG_task_destroy(task);
-    DEBUG2("%s: %s has received", name,process_name);
-    sprintf(task_name,"%s_wait", process_name);
+    DEBUG2("%s: %s has received", name, process_name);
+    sprintf(task_name, "%s_wait", process_name);
     DEBUG1("put on %s", task_name);
-    MSG_task_send(MSG_task_create("waiter",0,0,NULL),task_name);
+    MSG_task_send(MSG_task_create("waiter", 0, 0, NULL), task_name);
   }
 
-  MSG_process_set_data(MSG_process_self(), (void*)counters);
-  INFO2("%s %f", xbt_str_join(action, " "), MSG_get_clock()-clock);
+  MSG_process_set_data(MSG_process_self(), (void *) counters);
+  VERB2("%s %f", xbt_str_join(action, " "), MSG_get_clock() - clock);
   free(name);
 }
 
 
-static void sleep(xbt_dynar_t action)
+static void action_sleep(xbt_dynar_t action)
 {
-  char *name = xbt_str_join(action, " ");
+  char *name = NULL;
   char *duration = xbt_dynar_get_as(action, 2, char *);
   double clock = MSG_get_clock();
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    name = xbt_str_join(action, " ");
+
   DEBUG1("Entering %s", name);
   MSG_process_sleep(parse_double(duration));
-  INFO2("%s %f ", name, MSG_get_clock()-clock);
-  free(name);
+  VERB2("%s %f ", name, MSG_get_clock() - clock);
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    free(name);
 }
 
 static void allReduce(xbt_dynar_t action)
@@ -305,124 +372,148 @@ static void allReduce(xbt_dynar_t action)
   char **myargv;
   char *comm_size = xbt_dynar_get_as(action, 2, char *);
   char *comp_size = xbt_dynar_get_as(action, 3, char *);
-  m_process_t comm_helper=NULL;
-  m_task_t task=NULL, comp_task=NULL;
-  const char* process_name;
+  m_process_t comm_helper = NULL;
+  m_task_t task = NULL, comp_task = NULL;
+  const char *process_name;
   double clock = MSG_get_clock();
- 
-  coll_ctr counters =  (coll_ctr) MSG_process_get_data(MSG_process_self());
+
+  coll_ctr counters = (coll_ctr) MSG_process_get_data(MSG_process_self());
 
   xbt_assert0(communicator_size, "Size of Communicator is not defined"
-	      ", can't use collective operations");
+              ", can't use collective operations");
 
   process_name = MSG_process_get_name(MSG_process_self());
 
-  if (!counters){
+  if (!counters) {
     DEBUG0("Initialize the counters");
-    counters = (coll_ctr) calloc (1, sizeof(struct coll_ctr_t));
+    counters = (coll_ctr) calloc(1, sizeof(struct coll_ctr_t));
   }
 
   name = bprintf("allReduce_%d", counters->allReduce_counter++);
 
-  if (!strcmp(process_name, "process0")){
-    DEBUG2("%s: %s is the Root",name, process_name);
-    for(i=1;i<communicator_size;i++){
-      sprintf(spawn_name,"%s_process%d", name, i);
-      sprintf(task_name,"%s_wait", spawn_name);
-      comm_helper = 
-	MSG_process_create(task_name, spawned_recv, 
-			   (void *) xbt_strdup(spawn_name),
-			   MSG_host_self());      
+  if (!strcmp(process_name, "p0")) {
+    DEBUG2("%s: %s is the Root", name, process_name);
+    for (i = 1; i < communicator_size; i++) {
+      sprintf(spawn_name, "%s_p%d_%s", name, i,
+              MSG_process_get_name(MSG_process_self()));
+      sprintf(task_name, "%s_wait", spawn_name);
+      myargv = (char **) calloc(2, sizeof(char *));
+
+      myargv[0] = xbt_strdup(spawn_name);
+      myargv[1] = NULL;
+
+      comm_helper =
+          MSG_process_create_with_arguments(task_name, spawned_recv,
+                                            NULL, MSG_host_self(),
+                                            1, myargv);
     }
 
-    for(i=1;i<communicator_size;i++){
-      sprintf(task_name,"%s_process%d_wait", name, i);
-      MSG_task_receive(&task,task_name);
+    for (i = 1; i < communicator_size; i++) {
+      sprintf(task_name, "%s_p%d_p0_wait", name, i);
+      MSG_task_receive(&task, task_name);
       MSG_task_destroy(task);
-      task=NULL;
+      task = NULL;
     }
 
-    comp_task = 
-      MSG_task_create("allReduce_comp", parse_double(comp_size), 0, NULL);
+    comp_task =
+        MSG_task_create("allReduce_comp", parse_double(comp_size), 0,
+                        NULL);
     DEBUG1("%s: computing 'reduce_comp'", name);
     MSG_task_execute(comp_task);
     MSG_task_destroy(comp_task);
     DEBUG1("%s: computed", name);
 
-    for(i=1;i<communicator_size;i++){
-      myargv = (char**) calloc (3, sizeof (char*));
+    for (i = 1; i < communicator_size; i++) {
+      myargv = (char **) calloc(3, sizeof(char *));
       myargv[0] = xbt_strdup(name);
       myargv[1] = xbt_strdup(comm_size);
       myargv[2] = NULL;
 
-      sprintf(spawn_name,"%s_%d", myargv[0], i);
-      comm_helper = 
-	MSG_process_create_with_arguments(spawn_name, spawned_send, 
-					  NULL, MSG_host_self(), 2, myargv);
+      sprintf(spawn_name, "%s_%d", myargv[0], i);
+      comm_helper =
+          MSG_process_create_with_arguments(spawn_name, spawned_send,
+                                            NULL, MSG_host_self(), 2,
+                                            myargv);
     }
-    
-    for(i=1;i<communicator_size;i++){
-      sprintf(task_name,"process%d_wait", i);
+
+    for (i = 1; i < communicator_size; i++) {
+      sprintf(task_name, "p%d_wait", i);
       DEBUG1("get on %s", task_name);
-      MSG_task_receive(&task,task_name);      
+      MSG_task_receive(&task, task_name);
       MSG_task_destroy(task);
-      task=NULL;
+      task = NULL;
     }
     DEBUG2("%s: all messages sent by %s have been received",
-	  name, process_name);
+           name, process_name);
 
   } else {
     DEBUG2("%s: %s sends", name, process_name);
-    sprintf(task_name,"%s_%s", name, process_name);
+    sprintf(task_name, "%s_%s_p0", name, process_name);
     DEBUG1("put on %s", task_name);
     MSG_task_send(MSG_task_create(name, 0, parse_double(comm_size), NULL),
-		  task_name);
+                  task_name);
 
     MSG_task_receive(&task, name);
     MSG_task_destroy(task);
-    DEBUG2("%s: %s has received", name,process_name);
-    sprintf(task_name,"%s_wait", process_name);
+    DEBUG2("%s: %s has received", name, process_name);
+    sprintf(task_name, "%s_wait", process_name);
     DEBUG1("put on %s", task_name);
-    MSG_task_send(MSG_task_create("waiter",0,0,NULL),task_name);
+    MSG_task_send(MSG_task_create("waiter", 0, 0, NULL), task_name);
 
   }
 
-  MSG_process_set_data(MSG_process_self(), (void*)counters);
-  INFO2("%s %f", xbt_str_join(action, " "), MSG_get_clock()-clock);
+  MSG_process_set_data(MSG_process_self(), (void *) counters);
+  VERB2("%s %f", xbt_str_join(action, " "), MSG_get_clock() - clock);
   free(name);
 }
 
 static void comm_size(xbt_dynar_t action)
 {
+  char *name = NULL;
   char *size = xbt_dynar_get_as(action, 2, char *);
+  double clock = MSG_get_clock();
+
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    name = xbt_str_join(action, " ");
   communicator_size = parse_double(size);
+  VERB2("%s %f", name, MSG_get_clock() - clock);
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    free(name);
 }
 
 static void compute(xbt_dynar_t action)
 {
-  char *name = xbt_str_join(action, " ");
+  char *name = NULL;
   char *amout = xbt_dynar_get_as(action, 2, char *);
   m_task_t task = MSG_task_create(name, parse_double(amout), 0, NULL);
   double clock = MSG_get_clock();
 
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    name = xbt_str_join(action, " ");
   DEBUG1("Entering %s", name);
   MSG_task_execute(task);
   MSG_task_destroy(task);
-  INFO2("%s %f", name, MSG_get_clock()-clock);
-  free(name);
+  VERB2("%s %f", name, MSG_get_clock() - clock);
+  if (XBT_LOG_ISENABLED(actions, xbt_log_priority_verbose))
+    free(name);
 }
 
 /** Main function */
 int main(int argc, char *argv[])
 {
   MSG_error_t res = MSG_OK;
-  
+
   /* Check the given arguments */
   MSG_global_init(&argc, argv);
-  if (argc < 4) {
-    printf("Usage: %s platform_file deployment_file action_files\n", argv[0]);
-    printf("example: %s msg_platform.xml msg_deployment.xml actions\n",
+  if (argc < 3) {
+    printf("Usage: %s platform_file deployment_file [action_files]\n",
            argv[0]);
+    printf
+        ("example: %s msg_platform.xml msg_deployment.xml actions # if all actions are in the same file\n",
+         argv[0]);
+    printf
+        ("example: %s msg_platform.xml msg_deployment.xml # if actions are in separate files, specified in deployment\n",
+         argv[0]);
     exit(1);
   }
 
@@ -434,21 +525,21 @@ int main(int argc, char *argv[])
 
   /*   Action registration */
   MSG_action_register("comm_size", comm_size);
-  MSG_action_register("send", send);
+  MSG_action_register("send", action_send);
   MSG_action_register("Isend", Isend);
-  MSG_action_register("recv", recv);
+  MSG_action_register("recv", action_recv);
   MSG_action_register("Irecv", Irecv);
-  MSG_action_register("wait", wait);
+  MSG_action_register("wait", action_wait);
   MSG_action_register("barrier", barrier);
   MSG_action_register("bcast", bcast);
   MSG_action_register("reduce", reduce);
   MSG_action_register("allReduce", allReduce);
-  MSG_action_register("sleep", sleep);
+  MSG_action_register("sleep", action_sleep);
   MSG_action_register("compute", compute);
 
 
   /* Actually do the simulation using MSG_action_trace_run */
-  res = MSG_action_trace_run(argv[3]);
+  res = MSG_action_trace_run(argv[3]);  // it's ok to pass a NULL argument here
 
   INFO1("Simulation time %g", MSG_get_clock());
   MSG_clean();