X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/2728e49797bd42f623228fe493854ceaaefd7082..9a41b5fa634b7df7f823f57c4b2a3e27874df28f:/src/surf/network.c

diff --git a/src/surf/network.c b/src/surf/network.c
index dc854770e7..9a59eaf1b1 100644
--- a/src/surf/network.c
+++ b/src/surf/network.c
@@ -1,72 +1,221 @@
-/* Authors: Arnaud Legrand                                                  */
+/* 	$Id$	 */
+
+/* Copyright (c) 2004 Arnaud Legrand. 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. */
+ * under the terms of the license (GNU LGPL) which comes with this package. */
 
 #include "network_private.h"
-#include "xbt/dict.h"
 
-XBT_LOG_NEW_DEFAULT_SUBCATEGORY(network, surf ,"Logging specific to the SURF network module");
+#define SG_TCP_CTE_GAMMA 20000.0
+
+XBT_LOG_NEW_DEFAULT_SUBCATEGORY(network, surf,
+				"Logging specific to the SURF network module");
 
 surf_network_resource_t surf_network_resource = NULL;
 
-static xbt_dict_t network_set = NULL;
+static xbt_dict_t network_link_set = NULL;
+xbt_dict_t network_card_set = NULL;
 
+static int card_number = 0;
+static network_link_t **routing_table = NULL;
+static int *routing_table_size = NULL;
 
-static void *route_new(const char *src, const char* dst)
+#define ROUTE(i,j) routing_table[(i)+(j)*card_number]
+#define ROUTE_SIZE(i,j) routing_table_size[(i)+(j)*card_number]
+
+static void create_routing_table(void)
 {
-  return NULL;
+  routing_table = xbt_new0(network_link_t *, card_number * card_number);
+  routing_table_size = xbt_new0(int, card_number * card_number);
 }
 
-/*  
-   Semantic:  name       scale     initial     power     initial     state
-                                    power      trace      state      trace
-   
-   Token:   TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD
-   Type:     string      float      float      string     ON/OFF     string
-*/
+static void network_link_free(void *nw_link)
+{
+  xbt_free(((network_link_t)nw_link)->name);
+  xbt_free(nw_link);
+}
 
-static void parse_route(void)
+static network_link_t network_link_new(char *name,
+				       double bw_initial,
+				       tmgr_trace_t bw_trace,
+				       double lat_initial,
+				       tmgr_trace_t lat_trace,
+				       e_surf_network_link_state_t
+				       state_initial,
+				       tmgr_trace_t state_trace)
 {
-  route_new(NULL,NULL);
+  network_link_t nw_link = xbt_new0(s_network_link_t, 1);
+
+
+  nw_link->resource = (surf_resource_t) surf_network_resource;
+  nw_link->name = name;
+  nw_link->bw_current = bw_initial;
+  if (bw_trace)
+    nw_link->bw_event =
+	tmgr_history_add_trace(history, bw_trace, 0.0, 0, nw_link);
+  nw_link->lat_current = lat_initial;
+  if (lat_trace)
+    nw_link->lat_event =
+	tmgr_history_add_trace(history, lat_trace, 0.0, 0, nw_link);
+  nw_link->state_current = state_initial;
+  if (state_trace)
+    nw_link->state_event =
+	tmgr_history_add_trace(history, state_trace, 0.0, 0, nw_link);
+
+  nw_link->constraint =
+      lmm_constraint_new(maxmin_system, nw_link, nw_link->bw_current);
+
+  xbt_dict_set(network_link_set, name, nw_link, network_link_free);
+
+  return nw_link;
 }
 
-static void parse_file(const char *file)
+static void network_card_free(void *nw_card)
+{
+  xbt_free(((network_card_t)nw_card)->name);
+  xbt_free(nw_card);
+}
+
+static int network_card_new(const char *card_name)
 {
-  e_surf_token_t token;
+  network_card_t card = NULL;
 
-  find_section(file,"NETWORK");
+  xbt_dict_get(network_card_set, card_name, (void *) &card);
 
-  while(1) {
-    token=surf_parse();
+  if (!card) {
+    card = xbt_new0(s_network_card_t, 1);
+    card->name = xbt_strdup(card_name);
+    card->id = card_number++;
+    xbt_dict_set(network_card_set, card_name, card, network_card_free);
+  }
+  return card->id;
+}
 
-    if(token==TOKEN_END_SECTION) break;
-    if(token==TOKEN_NEWLINE) continue;
-    
-    if(token==TOKEN_WORD) parse_route();
-    else {CRITICAL1("Parse error line %d\n",line_pos);xbt_abort();}
+static void route_new(int src_id, int dst_id, char **links, int nb_link)
+{
+  network_link_t *link_list = NULL;
+  int i;
+
+  ROUTE_SIZE(src_id, dst_id) = nb_link;
+  link_list = (ROUTE(src_id, dst_id) = xbt_new0(network_link_t, nb_link));
+  for (i = 0; i < nb_link; i++) {
+    xbt_dict_get(network_link_set, links[i], (void *) &(link_list[i]));
+    xbt_free(links[i]);
   }
+  xbt_free(links);
+}
+
+static void parse_network_link(void)
+{
+  char *name;
+  double bw_initial;
+  tmgr_trace_t bw_trace;
+  double lat_initial;
+  tmgr_trace_t lat_trace;
+  e_surf_network_link_state_t state_initial = SURF_NETWORK_LINK_ON;
+  tmgr_trace_t state_trace;
+
+  name = xbt_strdup(A_network_link_name);
+  surf_parse_get_double(&bw_initial,A_network_link_bandwidth);
+  surf_parse_get_trace(&bw_trace, A_network_link_bandwidth_file);
+  surf_parse_get_double(&lat_initial,A_network_link_latency);
+  surf_parse_get_trace(&lat_trace, A_network_link_latency_file);
+
+  xbt_assert0((A_network_link_state==A_network_link_state_ON)||
+	      (A_network_link_state==A_network_link_state_OFF),
+	      "Invalid state")
+  if (A_network_link_state==A_network_link_state_ON) 
+    state_initial = SURF_NETWORK_LINK_ON;
+  if (A_network_link_state==A_network_link_state_OFF) 
+    state_initial = SURF_NETWORK_LINK_OFF;
+  surf_parse_get_trace(&state_trace,A_network_link_state_file);
+
+  network_link_new(name, bw_initial, bw_trace,
+		   lat_initial, lat_trace, state_initial, state_trace);
+}
+
+static int nb_link = 0;
+static char **link_name = NULL;
+static int src_id = -1;
+static int dst_id = -1;
+
+static void parse_route_set_endpoints(void)
+{
+  src_id = network_card_new(A_route_src);
+  dst_id = network_card_new(A_route_dst);
+  nb_link = 0;
+  link_name = NULL;
+}
+
+static void parse_route_elem(void)
+{
+  nb_link++;
+  link_name = xbt_realloc(link_name, (nb_link) * sizeof(char *));
+  link_name[(nb_link) - 1] = xbt_strdup(A_route_element_name);
+}
 
-  close_section("NETWORK");  
+static void parse_route_set_route(void)
+{
+  route_new(src_id, dst_id, link_name, nb_link);
+}
+
+static void parse_file(const char *file)
+{
+  /* Figuring out the network links */
+  surf_parse_reset_parser();
+  ETag_network_link_fun=parse_network_link;
+  surf_parse_open(file);
+  xbt_assert1((!surf_parse()),"Parse error in %s",file);
+  surf_parse_close();
+
+  /* Figuring out the network cards used */
+  surf_parse_reset_parser();
+  STag_route_fun=parse_route_set_endpoints;
+  surf_parse_open(file);
+  xbt_assert1((!surf_parse()),"Parse error in %s",file);
+  surf_parse_close();
+
+  create_routing_table();
+
+  /* Building the routes */
+  surf_parse_reset_parser();
+  STag_route_fun=parse_route_set_endpoints;
+  ETag_route_element_fun=parse_route_elem;
+  ETag_route_fun=parse_route_set_route;
+  surf_parse_open(file);
+  xbt_assert1((!surf_parse()),"Parse error in %s",file);
+  surf_parse_close();
 }
 
 static void *name_service(const char *name)
 {
-  return NULL;
+  network_card_t card = NULL;
+
+  xbt_dict_get(network_card_set, name, (void *) &card);
+
+  return card;
 }
 
 static const char *get_resource_name(void *resource_id)
 {
-  return NULL;
+  return ((network_card_t) resource_id)->name;
 }
 
 static int resource_used(void *resource_id)
 {
-  return 0;
+  return lmm_constraint_used(maxmin_system,
+			     ((network_link_t) resource_id)->constraint);
 }
 
 static void action_free(surf_action_t action)
 {
+  surf_action_network_t Action = (surf_action_network_t) action;
+
+  xbt_swag_remove(action, action->state_set);
+  lmm_variable_free(maxmin_system, Action->variable);
+  xbt_free(action);
+
   return;
 }
 
@@ -80,81 +229,310 @@ static void action_recycle(surf_action_t action)
   return;
 }
 
-static void action_change_state(surf_action_t action, e_surf_action_state_t state)
+static void action_change_state(surf_action_t action,
+				e_surf_action_state_t state)
 {
+  surf_action_change_state(action, state);
   return;
 }
 
-static xbt_heap_float_t share_resources(xbt_heap_float_t now)
+static double share_resources(double now)
 {
-  return -1.0;
+  s_surf_action_network_t s_action;
+  surf_action_network_t action = NULL;
+  xbt_swag_t running_actions = surf_network_resource->common_public->states.running_action_set;
+  double min = generic_maxmin_share_resources(running_actions,
+					      xbt_swag_offset(s_action, variable));
+
+  xbt_swag_foreach(action, running_actions) {
+    if(action->latency>0) {
+      if(min<0) min = action->latency;
+      else if (action->latency<min) min = action->latency;
+    }
+  }
+
+  return min;
 }
 
-static void update_actions_state(xbt_heap_float_t now,
-				 xbt_heap_float_t delta)
+
+static void update_actions_state(double now, double delta)
 {
+  double deltap = 0.0;
+  surf_action_network_t action = NULL;
+  surf_action_network_t next_action = NULL;
+  xbt_swag_t running_actions =
+      surf_network_resource->common_public->states.running_action_set;
+  xbt_swag_t failed_actions =
+      surf_network_resource->common_public->states.failed_action_set;
+
+  xbt_swag_foreach_safe(action, next_action, running_actions) {
+    deltap = delta;
+    if (action->latency > 0) {
+      if (action->latency > deltap) {
+	surf_double_update(&(action->latency),deltap);
+	deltap = 0.0;
+      } else {
+	surf_double_update(&(deltap), action->latency);
+	action->latency = 0.0;
+      }
+      if ((action->latency == 0.0) && !(action->suspended)) 
+	lmm_update_variable_weight(maxmin_system, action->variable, 1.0);
+    }
+    surf_double_update(&(action->generic_action.remains),
+	lmm_variable_getvalue(action->variable) * deltap);
+    if (action->generic_action.max_duration != NO_MAX_DURATION)
+      surf_double_update(&(action->generic_action.max_duration), delta);
+
+    /*   if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
+
+    if (action->generic_action.remains <= 0) {
+      action->generic_action.finish = surf_get_clock();
+      action_change_state((surf_action_t) action, SURF_ACTION_DONE);
+    } else if ((action->generic_action.max_duration != NO_MAX_DURATION) &&
+	       (action->generic_action.max_duration <= 0)) {
+      action->generic_action.finish = surf_get_clock();
+      action_change_state((surf_action_t) action, SURF_ACTION_DONE);
+    } else {			/* Need to check that none of the resource has failed */
+      lmm_constraint_t cnst = NULL;
+      int i = 0;
+      network_link_t nw_link = NULL;
+
+      while ((cnst =
+	      lmm_get_cnst_from_var(maxmin_system, action->variable,
+				    i++))) {
+	nw_link = lmm_constraint_id(cnst);
+	if (nw_link->state_current == SURF_NETWORK_LINK_OFF) {
+	  action->generic_action.finish = surf_get_clock();
+	  action_change_state((surf_action_t) action, SURF_ACTION_FAILED);
+	  break;
+	}
+      }
+    }
+  }
+
+  xbt_swag_foreach_safe(action, next_action, failed_actions) {
+    lmm_variable_disable(maxmin_system, action->variable);
+  }
+
   return;
 }
 
 static void update_resource_state(void *id,
-				  tmgr_trace_event_t event_type, 
-				  xbt_maxmin_float_t value)
+				  tmgr_trace_event_t event_type,
+				  double value)
 {
+  network_link_t nw_link = id;
+  /*   printf("[" "%lg" "] Asking to update network card \"%s\" with value " */
+  /* 	 "%lg" " for event %p\n", surf_get_clock(), nw_link->name, */
+  /* 	 value, event_type); */
+
+  if (event_type == nw_link->bw_event) {
+    nw_link->bw_current = value;
+    lmm_update_constraint_bound(maxmin_system, nw_link->constraint,
+				nw_link->bw_current);
+  } else if (event_type == nw_link->lat_event) {
+    double delta = value - nw_link->lat_current;
+    lmm_variable_t var = NULL;
+    surf_action_network_t action = NULL;
+
+    nw_link->lat_current = value;
+    while (lmm_get_var_from_cnst(maxmin_system, nw_link->constraint, &var)) {
+      action = lmm_variable_id(var);
+      action->lat_current += delta;
+      if(action->rate<0)
+	lmm_update_variable_bound(maxmin_system, action->variable,
+				  SG_TCP_CTE_GAMMA / action->lat_current);
+      else 
+	lmm_update_variable_bound(maxmin_system, action->variable,
+				  min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
+    }
+  } else if (event_type == nw_link->state_event) {
+    if (value > 0)
+      nw_link->state_current = SURF_NETWORK_LINK_ON;
+    else
+      nw_link->state_current = SURF_NETWORK_LINK_OFF;
+  } else {
+    CRITICAL0("Unknown event ! \n");
+    xbt_abort();
+  }
+
   return;
 }
 
-static surf_action_t communicate(void *src, void *dst, xbt_maxmin_float_t size)
+static surf_action_t communicate(void *src, void *dst, double size, double rate)
+{
+  surf_action_network_t action = NULL;
+  network_card_t card_src = src;
+  network_card_t card_dst = dst;
+  int route_size = ROUTE_SIZE(card_src->id, card_dst->id);
+  network_link_t *route = ROUTE(card_src->id, card_dst->id);
+  int i;
+
+  action = xbt_new0(s_surf_action_network_t, 1);
+
+  action->generic_action.cost = size;
+  action->generic_action.remains = size;
+  action->generic_action.max_duration = NO_MAX_DURATION;
+  action->generic_action.start = -1.0;
+  action->generic_action.finish = -1.0;
+  action->generic_action.resource_type =
+      (surf_resource_t) surf_network_resource;
+
+  action->generic_action.state_set =
+      surf_network_resource->common_public->states.running_action_set;
+
+  xbt_swag_insert(action, action->generic_action.state_set);
+  action->rate = rate;
+
+  action->latency = 0.0;
+  for (i = 0; i < route_size; i++)
+    action->latency += route[i]->lat_current;
+  action->lat_current = action->latency;
+
+  if(action->latency>0)
+    action->variable = lmm_variable_new(maxmin_system, action, 0.0, -1.0,
+					route_size);
+  else 
+    action->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0,
+					route_size);
+
+  if(action->rate<0)
+    lmm_update_variable_bound(maxmin_system, action->variable,
+			      SG_TCP_CTE_GAMMA / action->lat_current);
+  else 
+    lmm_update_variable_bound(maxmin_system, action->variable,
+			      min(action->rate,SG_TCP_CTE_GAMMA / action->lat_current));
+
+  if(route_size == 0) {
+    surf_action_change_state((surf_action_t) action, SURF_ACTION_DONE);
+  }
+
+  for (i = 0; i < route_size; i++)
+    lmm_expand(maxmin_system, route[i]->constraint, action->variable, 1.0);
+
+  return (surf_action_t) action;
+}
+
+static void action_suspend(surf_action_t action)
+{
+  ((surf_action_network_t) action)->suspended = 1;
+  lmm_update_variable_weight(maxmin_system,
+			     ((surf_action_network_t) action)->variable, 0.0);
+}
+
+static void action_resume(surf_action_t action)
+{
+  lmm_update_variable_weight(maxmin_system,
+			     ((surf_action_network_t) action)->variable, 1.0);
+  ((surf_action_network_t) action)->suspended = 0;
+}
+
+static int action_is_suspended(surf_action_t action)
 {
-  return NULL;
+  return ((surf_action_network_t) action)->suspended;
 }
 
 static void finalize(void)
 {
+  int i,j;
+
+  xbt_dict_free(&network_card_set);
+  xbt_dict_free(&network_link_set);
+  xbt_swag_free(surf_network_resource->common_public->states.
+		ready_action_set);
+  xbt_swag_free(surf_network_resource->common_public->states.
+		running_action_set);
+  xbt_swag_free(surf_network_resource->common_public->states.
+		failed_action_set);
+  xbt_swag_free(surf_network_resource->common_public->states.
+		done_action_set);
+  xbt_free(surf_network_resource->common_public);
+  xbt_free(surf_network_resource->common_private);
+  xbt_free(surf_network_resource->extension_public);
+
+  xbt_free(surf_network_resource);
+  surf_network_resource = NULL;
+
+  for (i = 0; i < card_number; i++) 
+    for (j = 0; j < card_number; j++) 
+      xbt_free(ROUTE(i,j));
+  xbt_free(routing_table);
+  routing_table = NULL;
+  xbt_free(routing_table_size);
+  routing_table_size = NULL;
+  card_number = 0;
 }
 
 static void surf_network_resource_init_internal(void)
 {
   s_surf_action_t action;
 
-  surf_network_resource = xbt_new0(s_surf_network_resource_t,1);
-  
-  surf_network_resource->common_private = xbt_new0(s_surf_resource_private_t,1);
-  surf_network_resource->common_public = xbt_new0(s_surf_resource_public_t,1);
-/*   surf_network_resource->extension_private = xbt_new0(s_surf_network_resource_extension_private_t,1); */
-  surf_network_resource->extension_public = xbt_new0(s_surf_network_resource_extension_public_t,1);
-
-  surf_network_resource->common_public->states.ready_action_set=
-    xbt_swag_new(xbt_swag_offset(action,state_hookup));
-  surf_network_resource->common_public->states.running_action_set=
-    xbt_swag_new(xbt_swag_offset(action,state_hookup));
-  surf_network_resource->common_public->states.failed_action_set=
-    xbt_swag_new(xbt_swag_offset(action,state_hookup));
-  surf_network_resource->common_public->states.done_action_set=
-    xbt_swag_new(xbt_swag_offset(action,state_hookup));
+  surf_network_resource = xbt_new0(s_surf_network_resource_t, 1);
+
+  surf_network_resource->common_private =
+      xbt_new0(s_surf_resource_private_t, 1);
+  surf_network_resource->common_public =
+      xbt_new0(s_surf_resource_public_t, 1);
+  surf_network_resource->extension_public =
+      xbt_new0(s_surf_network_resource_extension_public_t, 1);
+
+  surf_network_resource->common_public->states.ready_action_set =
+      xbt_swag_new(xbt_swag_offset(action, state_hookup));
+  surf_network_resource->common_public->states.running_action_set =
+      xbt_swag_new(xbt_swag_offset(action, state_hookup));
+  surf_network_resource->common_public->states.failed_action_set =
+      xbt_swag_new(xbt_swag_offset(action, state_hookup));
+  surf_network_resource->common_public->states.done_action_set =
+      xbt_swag_new(xbt_swag_offset(action, state_hookup));
 
   surf_network_resource->common_public->name_service = name_service;
-  surf_network_resource->common_public->get_resource_name = get_resource_name;
-  surf_network_resource->common_public->resource_used = resource_used;
-  surf_network_resource->common_public->action_get_state=surf_action_get_state;
+  surf_network_resource->common_public->get_resource_name =
+      get_resource_name;
+  surf_network_resource->common_public->action_get_state =
+      surf_action_get_state;
   surf_network_resource->common_public->action_free = action_free;
   surf_network_resource->common_public->action_cancel = action_cancel;
   surf_network_resource->common_public->action_recycle = action_recycle;
-  surf_network_resource->common_public->action_change_state = action_change_state;
+  surf_network_resource->common_public->action_change_state =
+      action_change_state;
+  surf_network_resource->common_public->action_set_data = surf_action_set_data;
+  surf_network_resource->common_public->name = "network";
 
+  surf_network_resource->common_private->resource_used = resource_used;
   surf_network_resource->common_private->share_resources = share_resources;
-  surf_network_resource->common_private->update_actions_state = update_actions_state;
-  surf_network_resource->common_private->update_resource_state = update_resource_state;
+  surf_network_resource->common_private->update_actions_state =
+      update_actions_state;
+  surf_network_resource->common_private->update_resource_state =
+      update_resource_state;
   surf_network_resource->common_private->finalize = finalize;
 
+  surf_network_resource->common_public->suspend = action_suspend;
+  surf_network_resource->common_public->resume = action_resume;
+  surf_network_resource->common_public->is_suspended = action_is_suspended;
+
   surf_network_resource->extension_public->communicate = communicate;
 
-  network_set = xbt_dict_new();
+  network_link_set = xbt_dict_new();
+  network_card_set = xbt_dict_new();
 
-  xbt_assert0(maxmin_system,"surf_init has to be called first!");
+  xbt_assert0(maxmin_system, "surf_init has to be called first!");
 }
 
-void surf_network_resource_init(const char* filename)
+/***************************************************************************/
+/* The nice TCP sharing model designed by Loris Marchal and Henri Casanova */
+/***************************************************************************/
+/* @TechReport{      rr-lip2002-40, */
+/*   author        = {Henri Casanova and Loris Marchal}, */
+/*   institution   = {LIP}, */
+/*   title         = {A Network Model for Simulation of Grid Application}, */
+/*   number        = {2002-40}, */
+/*   month         = {oct}, */
+/*   year          = {2002} */
+/* } */
+void surf_network_resource_init_CM02(const char *filename)
 {
+  if (surf_network_resource)
+    return;
   surf_network_resource_init_internal();
   parse_file(filename);
   xbt_dynar_push(resource_list, &surf_network_resource);