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Please compile with enable_compile_warnings=on. Missing some prototypes.
[simgrid.git] / src / bindings / lua / simgrid_lua.c
index 7c395d2..81cb592 100644 (file)
@@ -1,33 +1,39 @@
 /* SimGrid Lua bindings                                                     */
 
-/* Copyright (c) 2010, the SimGrid team. All right reserved.                */
+/* Copyright (c) 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. */
 
 #include <stdio.h>
-#include <lua5.1/lauxlib.h>
-#include <lua5.1/lualib.h>
-
+#include <lauxlib.h>
+#include <lualib.h>
 #include "msg/msg.h"
 #include "xbt.h"
 
 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua,bindings,"Lua Bindings");
 
 #define TASK_MODULE_NAME "simgrid.Task"
+#define HOST_MODULE_NAME "simgrid.Host"
+// Surf ( bypass XML )
+#define LINK_MODULE_NAME "simgrid.Link"
+#define ROUTE_MODULE_NAME "simgrid.Route"
+#undef BYPASS_MODEL
 
 /* ********************************************************************************* */
 /*                            helper functions                                       */
 /* ********************************************************************************* */
 
-static void stackDump (lua_State *L) {
+static void stackDump (const char *msg, lua_State *L) {
   char buff[2048];
   char *p=buff;
   int i;
   int top = lua_gettop(L);
-  void *ptr;
+
   fflush(stdout);
   p+=sprintf(p,"STACK(top=%d): ",top);
+
   for (i = 1; i <= top; i++) {  /* repeat for each level */
     int t = lua_type(L, i);
     switch (t) {
@@ -44,101 +50,161 @@ static void stackDump (lua_State *L) {
       p+=sprintf(p,"%g", lua_tonumber(L, i));
       break;
 
+    case LUA_TTABLE:
+      p+=sprintf(p, "Table");
+      break;
+
     default:  /* other values */
-      if ((ptr = luaL_checkudata(L,i,TASK_MODULE_NAME))) {
+      p+=sprintf(p, "???");
+/*      if ((ptr = luaL_checkudata(L,i,TASK_MODULE_NAME))) {
         p+=sprintf(p,"task");
       } else {
         p+=printf(p,"%s", lua_typename(L, t));
-      }
+      }*/
       break;
 
     }
     p+=sprintf(p,"  ");  /* put a separator */
   }
-  INFO1("%s",buff);
+  INFO2("%s%s",msg,buff);
 }
 
 /** @brief ensures that a userdata on the stack is a task and returns the pointer inside the userdata */
 static m_task_t checkTask (lua_State *L,int index) {
   m_task_t *pi,tk;
-  luaL_checktype(L,index,LUA_TUSERDATA);
-  pi = (m_task_t*)luaL_checkudata(L,index,TASK_MODULE_NAME);
+  luaL_checktype(L,index,LUA_TTABLE);
+  lua_getfield(L,index,"__simgrid_task");
+  pi = (m_task_t*)luaL_checkudata(L,-1,TASK_MODULE_NAME);
   if(pi == NULL)
-    luaL_typerror(L,index,TASK_MODULE_NAME);
+        luaL_typerror(L,index,TASK_MODULE_NAME);
   tk = *pi;
   if(!tk)
-    luaL_error(L,"null Task");
+        luaL_error(L,"null Task");
+  lua_pop(L,1);
   return  tk;
 }
-
-/** @brief leaves a new userdata on top of the stack, sets its metatable, and sets the Task pointer inside the userdata */
-static m_task_t *pushTask (lua_State *L,m_task_t tk) {
-  m_task_t *pi = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
-  *pi=tk;
-  luaL_getmetatable(L,TASK_MODULE_NAME);
-  lua_setmetatable(L,-2);
-  return pi;
-
-}
-
-
 /* ********************************************************************************* */
 /*                           wrapper functions                                       */
 /* ********************************************************************************* */
 
+/**
+ * A task is either something to compute somewhere, or something to exchange between two hosts (or both).
+ * It is defined by a computing amount and a message size.
+ *
+ */
+
+/* *              * *
+ * * Constructors * *
+ * *              * */
+/**
+ * Construct an new task with the specified processing amount and amount
+ * of data needed.
+ *
+ * @param name Task's name
+ *
+ * @param computeDuration      A value of the processing amount (in flop) needed to process the task.
+ *                             If 0, then it cannot be executed with the execute() method.
+ *                             This value has to be >= 0.
+ *
+ * @param messageSize          A value of amount of data (in bytes) needed to transfert this task.
+ *                             If 0, then it cannot be transfered with the get() and put() methods.
+ *                             This value has to be >= 0.
+ */
 static int Task_new(lua_State* L) {
-  const char *name=luaL_checkstring(L,1);
-  int comp_size = luaL_checkint(L,2);
-  int msg_size = luaL_checkint(L,3);
-  // FIXME: data shouldn't be NULL I guess
-  pushTask(L,MSG_task_create(name,comp_size,msg_size,NULL));
-  INFO0("Created task");
-  return 1;
+         const char *name=luaL_checkstring(L,1);
+         int comp_size = luaL_checkint(L,2);
+         int msg_size = luaL_checkint(L,3);
+         m_task_t msg_task = MSG_task_create(name,comp_size,msg_size,NULL);
+         lua_newtable (L); /* create a table, put the userdata on top of it */
+         m_task_t *lua_task = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
+         *lua_task = msg_task;
+         luaL_getmetatable(L,TASK_MODULE_NAME);
+         lua_setmetatable(L,-2);
+         lua_setfield (L, -2, "__simgrid_task"); /* put the userdata as field of the table */
+         /* remove the args from the stack */
+         lua_remove(L,1);
+         lua_remove(L,1);
+         lua_remove(L,1);
+         return 1;
 }
 
 static int Task_get_name(lua_State *L) {
-  m_task_t tk = checkTask(L,1);
+  m_task_t tk = checkTask(L,-1);
   lua_pushstring(L,MSG_task_get_name(tk));
   return 1;
 }
 
 static int Task_computation_duration(lua_State *L){
-  m_task_t tk = checkTask(L,1);
+  m_task_t tk = checkTask(L,-1);
   lua_pushnumber(L,MSG_task_get_compute_duration (tk));
   return 1;
 }
 
 static int Task_execute(lua_State *L){
-  m_task_t tk = checkTask(L,1);
+  m_task_t tk = checkTask(L,-1);
   int res = MSG_task_execute(tk);
   lua_pushnumber(L,res);
   return 1;
 }
 
 static int Task_destroy(lua_State *L) {
-  m_task_t tk = checkTask(L,1);
+  m_task_t tk = checkTask(L,-1);
   int res = MSG_task_destroy(tk);
   lua_pushnumber(L,res);
   return 1;
 }
+
 static int Task_send(lua_State *L)  {
-  m_task_t tk = checkTask(L,1);
-  const char *mailbox = luaL_checkstring(L,2);
-  stackDump(L);fflush(stdout);fflush(stderr);
-  int res = MSG_task_send(tk,mailbox);
-  res++;//FIXME: check it instead of avoiding the warning
-  stackDump(L);
+  //stackDump("send ",L);
+  m_task_t tk = checkTask(L,-2);
+  const char *mailbox = luaL_checkstring(L,-1);
+  lua_pop(L,1); // remove the string so that the task is on top of it
+  MSG_task_set_data(tk,L); // Copy my stack into the task, so that the receiver can copy the lua task directly
+  MSG_error_t res = MSG_task_send(tk,mailbox);
+  while (MSG_task_get_data(tk)!=NULL) // Don't mess up with my stack: the receiver didn't copy the data yet
+    MSG_process_sleep(0); // yield
+
+  if (res != MSG_OK) switch(res) {
+    case MSG_TIMEOUT :
+      ERROR0("MSG_task_send failed : Timeout");
+      break;
+    case MSG_TRANSFER_FAILURE :
+      ERROR0("MSG_task_send failed : Transfer Failure");
+      break;
+    case MSG_HOST_FAILURE :
+      ERROR0("MSG_task_send failed : Host Failure ");
+      break;
+    default :
+      ERROR0("MSG_task_send failed : Unexpected error , please report this bug");
+      break;
+    }
   return 0;
 }
+
 static int Task_recv(lua_State *L)  {
   m_task_t tk = NULL;
-  //stackDump(L);
-  const char *mailbox = luaL_checkstring(L,1);
-  int res = MSG_task_receive(&tk,mailbox);
-  res++;//FIXME: check it instead of avoiding the warning
-  INFO1("Task Name : >>>%s",MSG_task_get_name(tk));
-  pushTask(L,tk);
-  //  stackDump(L);
+  const char *mailbox = luaL_checkstring(L,-1);
+  MSG_error_t res = MSG_task_receive(&tk,mailbox);
+
+  lua_State *sender_stack = MSG_task_get_data(tk);
+  lua_xmove(sender_stack,L,1); // copy the data directly from sender's stack
+  MSG_task_set_data(tk,NULL);
+
+  if(res != MSG_OK) switch(res){
+         case MSG_TIMEOUT :
+                 ERROR0("MSG_task_receive failed : Timeout");
+                 break;
+         case MSG_TRANSFER_FAILURE :
+                 ERROR0("MSG_task_receive failed : Transfer Failure");
+                 break;
+         case MSG_HOST_FAILURE :
+                 ERROR0("MSG_task_receive failed : Host Failure ");
+                 break;
+         default :
+                 ERROR0("MSG_task_receive failed : Unexpected error , please report this bug");
+                 break;
+                 }
+
   return 1;
 }
 
@@ -153,9 +219,8 @@ static const luaL_reg Task_methods[] = {
     {0,0}
 };
 static int Task_gc(lua_State *L) {
-  m_task_t tk=checkTask(L,1);
+  m_task_t tk=checkTask(L,-1);
   if (tk) MSG_task_destroy(tk);
-  //printf("GoodBye Task(%p)\n",lua_touserdata(L,1));
   return 0;
 }
 
@@ -164,34 +229,584 @@ static int Task_tostring(lua_State *L) {
   return 1;
 }
 
-
 static const luaL_reg Task_meta[] = {
     {"__gc",  Task_gc},
     {"__tostring",  Task_tostring},
     {0,0}
 };
 
+/**
+ * Host
+ */
+static m_host_t checkHost (lua_State *L,int index) {
+  m_host_t *pi,ht;
+  luaL_checktype(L,index,LUA_TTABLE);
+  lua_getfield(L,index,"__simgrid_host");
+  pi = (m_host_t*)luaL_checkudata(L,-1,HOST_MODULE_NAME);
+  if(pi == NULL)
+        luaL_typerror(L,index,HOST_MODULE_NAME);
+  ht = *pi;
+  if(!ht)
+        luaL_error(L,"null Host");
+  lua_pop(L,1);
+  return  ht;
+}
+
+static int Host_get_by_name(lua_State *L)
+{
+       const char *name=luaL_checkstring(L,1);
+       DEBUG0("Getting Host from name...");
+       m_host_t msg_host = MSG_get_host_by_name(name);
+       if (!msg_host)
+               {
+               luaL_error(L,"null Host : MSG_get_host_by_name failled");
+               }
+    lua_newtable (L); /* create a table, put the userdata on top of it */
+       m_host_t *lua_host = (m_host_t*)lua_newuserdata(L,sizeof(m_host_t));
+       *lua_host = msg_host;
+       luaL_getmetatable(L,HOST_MODULE_NAME);
+       lua_setmetatable(L,-2);
+       lua_setfield (L, -2, "__simgrid_host"); /* put the userdata as field of the table */
+       /* remove the args from the stack */
+       lua_remove(L,1);
+       return 1;
+}
+
+
+static int Host_get_name(lua_State *L) {
+  m_host_t ht = checkHost(L,-1);
+  lua_pushstring(L,MSG_host_get_name(ht));
+  return 1;
+}
+
+static int Host_number(lua_State *L) {
+  lua_pushnumber(L,MSG_get_host_number());
+  return 1;
+}
+
+static int Host_at(lua_State *L)
+{
+       int index = luaL_checkinteger(L,1);
+       m_host_t host = MSG_get_host_table()[index-1]; // lua indexing start by 1 (lua[1] <=> C[0])
+       lua_newtable (L); /* create a table, put the userdata on top of it */
+       m_host_t *lua_host = (m_host_t*)lua_newuserdata(L,sizeof(m_host_t));
+       *lua_host = host;
+       luaL_getmetatable(L,HOST_MODULE_NAME);
+       lua_setmetatable(L,-2);
+       lua_setfield (L, -2, "__simgrid_host"); /* put the userdata as field of the table */
+       return 1;
+
+}
+
+/*****************************************************************************************
+                                                            * BYPASS XML SURF Methods *
+                                                                ***************************
+                                                                ***************************
+******************************************************************************************/
+#include "surf/surfxml_parse.h" /* to override surf_parse and bypass the parser */
+#include "surf/surf_private.h"
+typedef struct t_host_attr
+{
+       //platform attribute
+       // Mandatory attributes
+       const char* id;
+       double power_peak;
+       // Optional attributes
+       double power_scale;
+       const char *power_trace;
+       int state_initial;
+       const char *state_trace;
+       //deployment attribute
+       const char* function;
+       xbt_dynar_t args_list;
+}host_attr,*p_host_attr;
+
+typedef struct t_link_attr
+{
+       const char* id;
+       double bandwidth;
+       double latency;
+}link_attr,*p_link_attr;
+
+typedef struct t_route_attr
+{
+       const char *src_id;
+       const char *dest_id;
+       xbt_dynar_t links_id;
+
+}route_attr,*p_route_attr;
+
+//using xbt_dynar_t :
+static xbt_dynar_t host_list_d ;
+static xbt_dynar_t link_list_d ;
+static xbt_dynar_t route_list_d ;
+
+
+//create resource
+
+/*FIXME : still have to use a dictionary as argument make it possible to
+consider some arguments as optional and removes the importance of the
+parameter order */
+
+static void create_host(const char* id,double power_peak,double power_sc,
+                                               const char* power_tr,int state_init,
+                                               const char* state_tr)
+{
+
+       double power_scale = 1.0;
+       tmgr_trace_t power_trace = NULL;
+       e_surf_resource_state_t state_initial;
+       tmgr_trace_t state_trace;
+       if(power_sc) // !=0
+               power_scale = power_sc;
+       if (state_init == 1)
+               state_initial = SURF_RESOURCE_ON;
+       else
+               state_init = SURF_RESOURCE_OFF;
+       if(power_tr)
+               power_trace = tmgr_trace_new(power_tr);
+       else
+               power_trace = tmgr_trace_new("");
+       if(state_tr)
+               state_trace = tmgr_trace_new(state_tr);
+       else
+               state_trace = tmgr_trace_new("");
+       current_property_set = xbt_dict_new();
+       surf_host_create_resource(xbt_strdup(id), power_peak, power_scale,
+                                              power_trace, state_initial, state_trace, current_property_set);
+
+}
+
+static int Host_new(lua_State *L)
+{
+
+       if(xbt_dynar_is_empty(host_list_d))
+               host_list_d = xbt_dynar_new(sizeof(p_host_attr), &xbt_free_ref);
+
+       p_host_attr host;
+       const char * id;
+       const char *power_trace;
+       const char *state_trace;
+       double power,power_scale;
+       int state_initial;
+       //get values from the table passed as argument
+    if (lua_istable(L,-1)) {
+
+            // get Id Value
+            lua_pushstring(L,"id");
+            lua_gettable(L, -2 );
+            id = lua_tostring(L,-1);
+            lua_pop(L,1);
+
+            // get power value
+            lua_pushstring(L,"power");
+            lua_gettable(L, -2 );
+            power = lua_tonumber(L,-1);
+            lua_pop(L,1);
+
+            //get power_scale
+            lua_pushstring(L,"power_scale");
+            lua_gettable(L, -2 );
+            power_scale = lua_tonumber(L,-1);
+            lua_pop(L,1);
+
+            //get power_trace
+            lua_pushstring(L,"power_trace");
+            lua_gettable(L, -2 );
+            power_trace = lua_tostring(L,-1);
+            lua_pop(L,1);
+
+            //get state initial
+            lua_pushstring(L,"state_initial");
+            lua_gettable(L, -2 );
+            state_initial = lua_tonumber(L,-1);
+            lua_pop(L,1);
+
+            //get trace state
+            lua_pushstring(L,"state_trace");
+            lua_gettable(L, -2 );
+            state_trace = lua_tostring(L,-1);
+            lua_pop(L,1);
+
+    } else {
+            ERROR0("Bad Arguments to create host, Should be a table with named arguments");
+            return -1;
+    }
+
+           host = malloc(sizeof(host_attr));
+               host->id = id;
+               host->power_peak = power;
+               host->power_scale = power_scale;
+               host->power_trace = power_trace;
+               host->state_initial = state_initial;
+               host->state_trace = state_trace;
+               host->function = NULL;
+               xbt_dynar_push(host_list_d, &host);
+
+    return 0;
+
+}
+
+
+static int Link_new(lua_State *L) // (id,bandwidth,latency)
+{
+       if(xbt_dynar_is_empty(link_list_d))
+               link_list_d = xbt_dynar_new(sizeof(p_link_attr), &xbt_free_ref);
+
+       const char* id;
+       double bandwidth,latency;
+       //get values from the table passed as argument
+       if (lua_istable(L,-1)) {
+                   // get Id Value
+                   lua_pushstring(L,"id");
+                   lua_gettable(L, -2 );
+                   id = lua_tostring(L,-1);
+                   lua_pop(L,1);
+
+                   // get bandwidth value
+                   lua_pushstring(L,"bandwidth");
+                   lua_gettable(L, -2 );
+                   bandwidth = lua_tonumber(L,-1);
+                   lua_pop(L,1);
+
+                   //get latency value
+                   lua_pushstring(L,"latency");
+                   lua_gettable(L, -2 );
+                   latency = lua_tonumber(L,-1);
+                   lua_pop(L,1);
+
+           } else {
+                   ERROR0("Bad Arguments to create link, Should be a table with named arguments");
+                   return -1;
+           }
+
+       p_link_attr link = malloc(sizeof(link_attr));
+       link->id = id;
+       link->bandwidth = bandwidth;
+       link->latency = latency;
+       xbt_dynar_push(link_list_d,&link);
+       return 0;
+}
+
+static int Route_new(lua_State *L) // (src_id,dest_id,links_number,link_table)
+{
+       if(xbt_dynar_is_empty(route_list_d))
+               route_list_d = xbt_dynar_new(sizeof(p_route_attr), &xbt_free_ref);
+       const char * link_id;
+       p_route_attr route = malloc(sizeof(route_attr));
+       route->src_id = luaL_checkstring(L,1);
+       route->dest_id = luaL_checkstring(L,2);
+       route->links_id = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
+       lua_pushnil(L);
+       while (lua_next(L,3) != 0) {
+               link_id = lua_tostring(L, -1);
+               xbt_dynar_push(route->links_id, &link_id);
+           DEBUG2("index = %f , Link_id = %s \n",lua_tonumber(L, -2),lua_tostring(L, -1));
+           lua_pop(L, 1);
+       }
+       lua_pop(L, 1);
+
+       //add route to platform's route list
+       xbt_dynar_push(route_list_d,&route);
+       return 0;
+}
+
+static int Host_set_function(lua_State *L) //(host,function,nb_args,list_args)
+{
+       // look for the index of host in host_list
+       const char *host_id = luaL_checkstring(L,1);
+       const char* argument;
+       unsigned int i;
+       p_host_attr p_host;
+
+       xbt_dynar_foreach(host_list_d,i,p_host)
+       {
+               if(p_host->id == host_id)
+               {
+                       p_host->function = luaL_checkstring(L,2);
+                       p_host->args_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
+                       // fill the args list
+                       lua_pushnil(L);
+                       int j = 0;
+                       while (lua_next(L,3) != 0) {
+                                       argument = lua_tostring(L, -1);
+                                       xbt_dynar_push(p_host->args_list, &argument);
+                                   DEBUG2("index = %f , Arg_id = %s \n",lua_tonumber(L, -2),lua_tostring(L, -1));
+                                   j++;
+                                   lua_pop(L, 1);
+                               }
+                       lua_pop(L, 1);
+                       return 0;
+               }
+       }
+       ERROR1("Host : %s Not Fount !!",host_id);
+       return 1;
+}
+
+/*
+ * surf parse bypass platform
+ */
+static int surf_parse_bypass_platform()
+{
+       char buffer[22];
+       unsigned int i,j;
+       char* link_id;
+
+       p_host_attr p_host;
+       p_link_attr p_link;
+       p_route_attr p_route;
+
+       static int AX_ptr = 0;
+       static int surfxml_bufferstack_size = 2048;
+
+         /* FIXME allocating memory for the buffer, I think 2kB should be enough */
+       surfxml_bufferstack = xbt_new0(char, surfxml_bufferstack_size);
+         /* <platform> */
+#ifndef BYPASS_CPU
+       SURFXML_BUFFER_SET(platform_version, "2");
+       SURFXML_START_TAG(platform);
+#endif
+
+       // Add Hosts
+       xbt_dynar_foreach(host_list_d,i,p_host)
+       {
+
+#ifdef BYPASS_MODEL
+               create_host(p_host->id,p_host->power_peak,p_host->power_scale,p_host->power_trace,
+                                       p_host->state_initial,p_host->state_trace);
+               //add to routing model host list
+               surf_route_add_host((char*)p_host->id);
+#else
+
+               SURFXML_BUFFER_SET(host_id,p_host->id);
+               sprintf(buffer,"%f",p_host->power_peak);
+               SURFXML_BUFFER_SET(host_power,buffer);
+               SURFXML_BUFFER_SET(host_availability, "1.0");
+               SURFXML_BUFFER_SET(host_availability_file, "");
+               A_surfxml_host_state = A_surfxml_host_state_ON;
+               SURFXML_BUFFER_SET(host_state_file, "");
+               SURFXML_BUFFER_SET(host_interference_send, "1.0");
+               SURFXML_BUFFER_SET(host_interference_recv, "1.0");
+               SURFXML_BUFFER_SET(host_interference_send_recv, "1.0");
+               SURFXML_BUFFER_SET(host_max_outgoing_rate, "-1.0");
+               SURFXML_START_TAG(host);
+               SURFXML_END_TAG(host);
+#endif
+       }
+
+       //add Links
+       xbt_dynar_foreach(link_list_d,i,p_link)
+       {
+#ifdef BYPASS_MODEL
+               surf_link_create_resouce((char*)p_link->id,p_link->bandwidth,p_link->latency);
+#else
+
+               SURFXML_BUFFER_SET(link_id,p_link->id);
+               sprintf(buffer,"%f",p_link->bandwidth);
+               SURFXML_BUFFER_SET(link_bandwidth,buffer);
+               SURFXML_BUFFER_SET(link_bandwidth_file, "");
+               sprintf(buffer,"%f",p_link->latency);
+               SURFXML_BUFFER_SET(link_latency,buffer);
+               SURFXML_BUFFER_SET(link_latency_file, "");
+               A_surfxml_link_state = A_surfxml_link_state_ON;
+               SURFXML_BUFFER_SET(link_state_file, "");
+               A_surfxml_link_sharing_policy = A_surfxml_link_sharing_policy_SHARED;
+               SURFXML_START_TAG(link);
+               SURFXML_END_TAG(link);
+#endif
+       }
+
+       // add route
+       xbt_dynar_foreach(route_list_d,i,p_route)
+       {
+#ifdef BYPASS_MODEL
+               surf_route_set_resource((char*)p_route->src_id,(char*)p_route->dest_id,p_route->links_id,0);
+#else
+
+               SURFXML_BUFFER_SET(route_src,p_route->src_id);
+               SURFXML_BUFFER_SET(route_dst,p_route->dest_id);
+               SURFXML_BUFFER_SET(route_impact_on_src, "0.0");
+               SURFXML_BUFFER_SET(route_impact_on_dst, "0.0");
+               SURFXML_BUFFER_SET(route_impact_on_src_with_other_recv, "0.0");
+               SURFXML_BUFFER_SET(route_impact_on_dst_with_other_send, "0.0");
+               SURFXML_START_TAG(route);
+
+               xbt_dynar_foreach(p_route->links_id,j,link_id)
+               {
+                       SURFXML_BUFFER_SET(link_c_ctn_id,link_id);
+                       SURFXML_START_TAG(link_c_ctn);
+                       SURFXML_END_TAG(link_c_ctn);
+
+               }
+
+               SURFXML_END_TAG(route);
+#endif
+       }
+       /* </platform> */
+#ifndef BYPASS_MODEL
+       SURFXML_END_TAG(platform);
+#endif
+
+       free(surfxml_bufferstack);
+       return 0; // must return 0 ?!!
+
+}
+/*
+ * surf parse bypass application
+ */
+static int surf_parse_bypass_application()
+{
+         unsigned int i,j;
+         p_host_attr p_host;
+         char * arg;
+         static int AX_ptr;
+         static int surfxml_bufferstack_size = 2048;
+         /* FIXME ( should be manual )allocating memory to the buffer, I think 2MB should be enough */
+         surfxml_bufferstack = xbt_new0(char, surfxml_bufferstack_size);
+
+#ifdef BYPASS_MODEL
+         xbt_dynar_foreach(host_list_d,i,p_host)
+                 {
+                 if(p_host->function)
+                         MSG_set_function(p_host->id,p_host->function,p_host->args_list);
+                 }
+#else
+
+         /* <platform> */
+         SURFXML_BUFFER_SET(platform_version, "2");
+         SURFXML_START_TAG(platform);
+         xbt_dynar_foreach(host_list_d,i,p_host)
+         {
+                 if(p_host->function)
+                 {
+                         SURFXML_BUFFER_SET(process_host, p_host->id);
+                         SURFXML_BUFFER_SET(process_function, p_host->function);
+                         SURFXML_BUFFER_SET(process_start_time, "-1.0");
+                         SURFXML_BUFFER_SET(process_kill_time, "-1.0");
+                         SURFXML_START_TAG(process);
+                         //args
+                         xbt_dynar_foreach(p_host->args_list,j,arg)
+                         {
+                                 SURFXML_BUFFER_SET(argument_value,arg);
+                                 SURFXML_START_TAG(argument);
+                                 SURFXML_END_TAG(argument);
+                         }
+                         SURFXML_END_TAG(process);
+                 }
+         }
+         /* </platform> */
+         SURFXML_END_TAG(platform);
+#endif
+         free(surfxml_bufferstack);
+         return 0;
+}
+
+//***********Register Methods *******************************************//
+/*
+ * Host Methods
+ */
+static const luaL_reg Host_methods[] = {
+    {"getByName",   Host_get_by_name},
+    {"name",           Host_get_name},
+    {"number",         Host_number},
+    {"at",                     Host_at},
+    // Bypass XML Methods
+    {"new",                    Host_new},
+    {"setFunction",    Host_set_function},
+    {0,0}
+};
+
+static int Host_gc(lua_State *L)
+{
+  m_host_t ht = checkHost(L,-1);
+  if (ht) ht = NULL;
+  return 0;
+}
+
+static int Host_tostring(lua_State *L)
+{
+  lua_pushfstring(L,"Host :%p",lua_touserdata(L,1));
+  return 1;
+}
+
+static const luaL_reg Host_meta[] = {
+    {"__gc",  Host_gc},
+    {"__tostring",  Host_tostring},
+    {0,0}
+};
+
+/*
+ * Link Methods
+ */
+static const luaL_reg Link_methods[] = {
+    {"new",Link_new},
+    {0,0}
+};
+/*
+ * Route Methods
+ */
+static const luaL_reg Route_methods[] ={
+   {"new",Route_new},
+   {0,0}
+};
+
 /*
  * Environment related
  */
+
+extern lua_State *simgrid_lua_state;
+
+static int run_lua_code(int argc,char **argv) {
+  DEBUG1("Run lua code %s",argv[0]);
+  lua_State *L = lua_newthread(simgrid_lua_state);
+  int ref = luaL_ref(simgrid_lua_state, LUA_REGISTRYINDEX); // protect the thread from being garbage collected
+  int res = 1;
+
+  /* Start the co-routine */
+  lua_getglobal(L,argv[0]);
+  xbt_assert1(lua_isfunction(L,-1),
+      "The lua function %s does not seem to exist",argv[0]);
+
+  // push arguments onto the stack
+  int i;
+  for(i=1;i<argc;i++)
+    lua_pushstring(L,argv[i]);
+
+  // Call the function (in resume)
+  xbt_assert2(lua_pcall(L, argc-1, 1, 0) == 0,
+    "error running function `%s': %s",argv[0], lua_tostring(L, -1));
+
+  /* retrieve result */
+  if (lua_isnumber(L, -1)) {
+    res = lua_tonumber(L, -1);
+    lua_pop(L, 1);  /* pop returned value */
+  }
+
+  // cleanups
+  luaL_unref(simgrid_lua_state,LUA_REGISTRYINDEX,ref );
+  DEBUG1("Execution of lua code %s is over", (argv ? argv[0] : "(null)"));
+  return res;
+}
 static int launch_application(lua_State *L) {
   const char * file = luaL_checkstring(L,1);
+  MSG_function_register_default(run_lua_code);
   MSG_launch_application(file);
   return 0;
 }
 #include "simix/simix.h" //FIXME: KILLME when debugging on simix internals become useless
 static int create_environment(lua_State *L) {
   const char *file = luaL_checkstring(L,1);
-  INFO1("Loading environment file %s",file);
+  DEBUG1("Loading environment file %s",file);
   MSG_create_environment(file);
   smx_host_t *hosts = SIMIX_host_get_table();
   int i;
   for (i=0;i<SIMIX_host_get_number();i++) {
-    INFO1("We have an host %s", SIMIX_host_get_name(hosts[i]));
+    DEBUG1("We have an host %s", SIMIX_host_get_name(hosts[i]));
   }
 
   return 0;
 }
+
 static int debug(lua_State *L) {
   const char *str = luaL_checkstring(L,1);
   DEBUG1("%s",str);
@@ -210,6 +825,26 @@ static int clean(lua_State *L) {
   MSG_clean();
   return 0;
 }
+
+/*
+ * Bypass XML Pareser
+ */
+static int register_platform(lua_State *L)
+{
+       /* Tell Simgrid we dont wanna use its parser*/
+       surf_parse = surf_parse_bypass_platform;
+       MSG_create_environment(NULL);
+       return 0;
+}
+
+static int register_application(lua_State *L)
+{
+        MSG_function_register_default(run_lua_code);
+        surf_parse = surf_parse_bypass_application;
+        MSG_launch_application(NULL);
+        return 0;
+}
+
 static const luaL_Reg simgrid_funcs[] = {
     { "create_environment", create_environment},
     { "launch_application", launch_application},
@@ -220,6 +855,9 @@ static const luaL_Reg simgrid_funcs[] = {
     /* short names */
     { "platform", create_environment},
     { "application", launch_application},
+    /* methods to bypass XML parser*/
+    { "register_platform",register_platform},
+    { "register_application",register_application},
     { NULL, NULL }
 };
 
@@ -227,14 +865,13 @@ static const luaL_Reg simgrid_funcs[] = {
 /*                       module management functions                                 */
 /* ********************************************************************************* */
 
-void SIMIX_ctx_lua_factory_set_state(void *state);/* Hack: pass the L to our factory */
 extern const char*xbt_ctx_factory_to_use; /*Hack: let msg load directly the right factory */
 
 #define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
 
 int luaopen_simgrid(lua_State* L); // Fuck gcc: we don't need that prototype
 int luaopen_simgrid(lua_State* L) {
-  xbt_ctx_factory_to_use = "lua";
+  //xbt_ctx_factory_to_use = "lua";
 
   char **argv=malloc(sizeof(char*)*LUA_MAX_ARGS_COUNT);
   int argc=1;
@@ -256,18 +893,18 @@ int luaopen_simgrid(lua_State* L) {
            __FILE__,LUA_MAX_ARGS_COUNT-1);
       argv[argc-1] = (char*)luaL_checkstring(L,-1);
       lua_pop(L,1);
-      INFO1("Got command line argument %s from lua",argv[argc-1]);
+      DEBUG1("Got command line argument %s from lua",argv[argc-1]);
     }
   }
   argv[argc--]=NULL;
 
   /* Initialize the MSG core */
   MSG_global_init(&argc,argv);
-  INFO1("Still %d arguments on command line",argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
+  DEBUG1("Still %d arguments on command line",argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
 
   /* register the core C functions to lua */
   luaL_register(L, "simgrid", simgrid_funcs);
-  /* register the tasks to lua */
+  /* register the task methods to lua */
   luaL_openlib(L,TASK_MODULE_NAME,Task_methods,0); //create methods table,add it to the globals
   luaL_newmetatable(L,TASK_MODULE_NAME); //create metatable for Task,add it to the Lua registry
   luaL_openlib(L,0,Task_meta,0);// fill metatable
@@ -279,8 +916,29 @@ int luaopen_simgrid(lua_State* L) {
   lua_rawset(L,-3); //hide metatable:metatable.__metatable = methods
   lua_pop(L,1);   //drop metatable
 
-  /* Keep the context mechanism informed of our lua world today */
-  SIMIX_ctx_lua_factory_set_state(L);
+  /* register the hosts methods to lua*/
+  luaL_openlib(L,HOST_MODULE_NAME,Host_methods,0);
+  luaL_newmetatable(L,HOST_MODULE_NAME);
+  luaL_openlib(L,0,Host_meta,0);
+  lua_pushliteral(L,"__index");
+  lua_pushvalue(L,-3);
+  lua_rawset(L,-3);
+  lua_pushliteral(L,"__metatable");
+  lua_pushvalue(L,-3);
+  lua_rawset(L,-3);
+  lua_pop(L,1);
 
+  /* register the links methods to lua*/
+  luaL_openlib(L,LINK_MODULE_NAME,Link_methods,0);
+  luaL_newmetatable(L,LINK_MODULE_NAME);
+  lua_pop(L,1);
+
+  /*register the routes methods to lua*/
+  luaL_openlib(L,ROUTE_MODULE_NAME,Route_methods,0);
+  luaL_newmetatable(L,LINK_MODULE_NAME);
+  lua_pop(L,1);
+
+  /* Keep the context mechanism informed of our lua world today */
+  simgrid_lua_state = L;
   return 1;
 }