X-Git-Url: http://info.iut-bm.univ-fcomte.fr/pub/gitweb/simgrid.git/blobdiff_plain/2728e49797bd42f623228fe493854ceaaefd7082..8c354c48ec90c997cc7213ce96ca97d882934166:/src/surf/network.c

diff --git a/src/surf/network.c b/src/surf/network.c
index dc854770e7..f8eacea1ec 100644
--- a/src/surf/network.c
+++ b/src/surf/network.c
@@ -1,72 +1,278 @@
-/* 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;
+static 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;
+
+#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)
+{
+  routing_table = xbt_new0(network_link_t *,card_number*card_number);
+  routing_table_size = xbt_new0(int,card_number*card_number);
+}
+
+static void network_link_free(void *nw_link)
+{
+  xbt_free(nw_link);
+}
+
+static network_link_t network_link_new(const char *name,
+				       xbt_maxmin_float_t bw_initial,
+				       tmgr_trace_t bw_trace,
+				       xbt_maxmin_float_t lat_initial,
+				       tmgr_trace_t lat_trace,
+				       e_surf_network_link_state_t state_initial,
+				       tmgr_trace_t state_trace)
+{
+  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 int network_card_new(const char *card_name)
+{
+  network_card_t card = NULL;
 
+  xbt_dict_get(network_card_set, card_name, (void *) &card);
 
-static void *route_new(const char *src, const char* dst)
+  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, NULL);
+  } 
+  return card->id;
+}
+
+static void route_new(int src_id, int dst_id,
+		      char* *links, int nb_link)
 {
-  return NULL;
+  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);  
 }
 
 /*  
-   Semantic:  name       scale     initial     power     initial     state
-                                    power      trace      state      trace
+   Semantic:  name       initial   bandwidth   initial   latency    initial     state
+                        bandwidth    trace     latency    trace      state      trace
    
-   Token:   TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD
-   Type:     string      float      float      string     ON/OFF     string
+   Token:   TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD TOKEN_WORD
+   Type:     string       float      string    float      string     ON/OFF     string
 */
-
-static void parse_route(void)
+static void parse_network_link(void)
 {
-  route_new(NULL,NULL);
+  e_surf_token_t token;
+  char *name;
+  xbt_maxmin_float_t bw_initial;
+  tmgr_trace_t bw_trace;
+  xbt_maxmin_float_t lat_initial;
+  tmgr_trace_t lat_trace;
+  e_surf_network_link_state_t state_initial;
+  tmgr_trace_t state_trace;
+
+  name = xbt_strdup(surf_parse_text);
+
+  surf_parse_float(&bw_initial);
+  surf_parse_trace(&bw_trace);
+  surf_parse_float(&lat_initial);
+  surf_parse_trace(&lat_trace);
+
+  token = surf_parse();		/* state_initial */
+  xbt_assert1((token == TOKEN_WORD), "Parse error line %d", line_pos);
+  if (strcmp(surf_parse_text, "ON") == 0)
+    state_initial = SURF_NETWORK_LINK_ON;
+  else if (strcmp(surf_parse_text, "OFF") == 0)
+    state_initial = SURF_NETWORK_LINK_OFF;
+  else {
+    CRITICAL2("Invalid cpu state (line %d): %s neq ON or OFF\n", line_pos,
+	      surf_parse_text);
+    xbt_abort();
+  }
+
+  surf_parse_trace(&state_trace);
+
+  network_link_new(name, bw_initial, bw_trace, 
+		   lat_initial, lat_trace,
+		   state_initial, state_trace);  
 }
 
-static void parse_file(const char *file)
+/*  
+   Semantic:  source   destination           network
+                                              links
+   
+   Token:   TOKEN_WORD TOKEN_WORD TOKEN_LP TOKEN_WORD* TOKEN_RP
+   Type:     string       string             string
+*/
+static void parse_route(int fake)
 {
+  int src_id = -1;
+  int dst_id = -1;
+  int nb_link = 0;
+  char **link_name = NULL;
   e_surf_token_t token;
 
-  find_section(file,"NETWORK");
+  src_id = network_card_new(surf_parse_text);
 
-  while(1) {
-    token=surf_parse();
+  token = surf_parse();
+  xbt_assert1((token == TOKEN_WORD), "Parse error line %d", line_pos);  
+  dst_id = network_card_new(surf_parse_text);
 
-    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();}
+  token = surf_parse();
+  xbt_assert1((token == TOKEN_LP), "Parse error line %d", line_pos);  
+  
+  while((token = surf_parse())==TOKEN_WORD) {
+    if(!fake) {
+      nb_link++;
+      link_name=xbt_realloc(link_name, (nb_link) * sizeof(char*));
+      link_name[(nb_link)-1]=xbt_strdup(surf_parse_text);
+    }
   }
+  xbt_assert1((token == TOKEN_RP), "Parse error line %d", line_pos);  
+
+  if(!fake) route_new(src_id,dst_id,link_name, nb_link);
+}
+
+static void parse_file(const char *file)
+{
+  e_surf_token_t token;
 
-  close_section("NETWORK");  
+  /* Figuring out the network links in the system */
+  find_section(file, "NETWORK");
+  while (1) {
+    token = surf_parse();
+
+    if (token == TOKEN_END_SECTION)
+      break;
+    if (token == TOKEN_NEWLINE)
+      continue;
+
+    if (token == TOKEN_WORD)
+      parse_network_link();
+    else {
+      CRITICAL1("Parse error line %d\n", line_pos);
+      xbt_abort();
+    }
+  }
+  close_section("NETWORK");
+
+  /* Figuring out the network cards used */
+  find_section(file, "ROUTE");
+  while (1) {
+    token = surf_parse();
+
+    if (token == TOKEN_END_SECTION)
+      break;
+    if (token == TOKEN_NEWLINE)
+      continue;
+
+    if (token == TOKEN_WORD)
+      parse_route(1);
+    else {
+      CRITICAL1("Parse error line %d\n", line_pos);
+      xbt_abort();
+    }
+  }
+  close_section("ROUTE");
+
+  create_routing_table();
+
+  /* Building the routes */
+  find_section(file, "ROUTE");
+  while (1) {
+    token = surf_parse();
+
+    if (token == TOKEN_END_SECTION)
+      break;
+    if (token == TOKEN_NEWLINE)
+      continue;
+
+    if (token == TOKEN_WORD)
+      parse_route(0);
+    else {
+      CRITICAL1("Parse error line %d\n", line_pos);
+      xbt_abort();
+    }
+  }
+  close_section("ROUTE");
 }
 
 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;
 }
 
@@ -80,80 +286,241 @@ 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)
 {
-  return -1.0;
+  surf_action_network_t action = NULL;
+  xbt_swag_t running_actions =
+      surf_network_resource->common_public->states.running_action_set;
+  xbt_maxmin_float_t min = -1;
+  xbt_maxmin_float_t value = -1;
+  lmm_solve(maxmin_system);
+
+  action = xbt_swag_getFirst(running_actions);
+  if (!action)
+    return -1.0;
+  value = lmm_variable_getvalue(action->variable);
+  min = action->generic_action.remains / value;
+
+  xbt_swag_foreach(action, running_actions) {
+    value = action->latency + (action->generic_action.remains /
+	lmm_variable_getvalue(action->variable));
+    if (value < min)
+      min = value;
+  }
+
+  return min;
 }
 
+
 static void update_actions_state(xbt_heap_float_t now,
 				 xbt_heap_float_t delta)
 {
+  xbt_heap_float_t 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) {
+	action->latency-=deltap;
+	deltap = 0.0;
+      } else {
+	deltap -= action->latency;
+	action->latency = 0.0;
+      }
+    }
+    action->generic_action.remains -=
+      lmm_variable_getvalue(action->variable) * deltap;
+
+/*     if(action->generic_action.remains<.00001) action->generic_action.remains=0; */
+
+    if (action->generic_action.remains <= 0) {
+      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_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, 
+				  tmgr_trace_event_t event_type,
 				  xbt_maxmin_float_t value)
 {
+  network_link_t nw_link = id;
+
+/*   printf("[" XBT_HEAP_FLOAT_T "] Asking to update network card \"%s\" with value " */
+/* 	 XBT_MAXMIN_FLOAT_T " 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) {
+    xbt_maxmin_float_t 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;
+      lmm_update_variable_bound(maxmin_system, var, 
+				1/(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,
+				 xbt_maxmin_float_t size)
 {
-  return NULL;
+  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.start = -1.0;
+  action->generic_action.finish = -1.0;
+  action->generic_action.callback = NULL;
+  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->variable = lmm_variable_new(maxmin_system, action, 1.0, -1.0, 
+				      route_size);
+  for(i=0; i<route_size; i++)
+    lmm_expand(maxmin_system, route[i]->constraint, action->variable,
+	       1.0);
+
+  action->latency = 0.0;
+  for(i=0; i<route_size; i++)
+    action->latency += route[i]->lat_current;
+  action->lat_current = action->latency;
+  lmm_update_variable_bound(maxmin_system, action->variable, 
+			    SG_TCP_CTE_GAMMA/action->lat_current);
+
+  return (surf_action_t) action;
 }
 
 static void finalize(void)
 {
+  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;
 }
 
 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 = xbt_new0(s_surf_network_resource_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_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->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_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->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)
+void surf_network_resource_init(const char *filename)
 {
   surf_network_resource_init_internal();
   parse_file(filename);