src/bindings/lua/simgrid_lua.c

   1 /* SimGrid Lua bindings                                                     */
   2
   3 /* Copyright (c) 2010. The SimGrid Team.
   4  * All rights reserved.                                                     */
   5
   6 /* This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the license (GNU LGPL) which comes with this package. */
   8
   9 #include <stdio.h>
  10 #include <lauxlib.h>
  11 #include <lualib.h>
  12 #include "msg/msg.h"
  13 #include "simdag/simdag.h"
  14 #include <gras.h>
  15 #include "xbt.h"
  16 #include "lua_stub_generator.h"
  17
  18 XBT_LOG_NEW_DEFAULT_SUBCATEGORY(lua,bindings,"Lua Bindings");
  19
  20 #define TASK_MODULE_NAME "simgrid.Task"
  21 #define HOST_MODULE_NAME "simgrid.Host"
  22 // Surf ( bypass XML )
  23 #define LINK_MODULE_NAME "simgrid.Link"
  24 #define ROUTE_MODULE_NAME "simgrid.Route"
  25
  26 /* ********************************************************************************* */
  27 /*                            helper functions                                       */
  28 /* ********************************************************************************* */
  29 static void stackDump (const char *msg, lua_State *L) {
  30   char buff[2048];
  31   char *p=buff;
  32   int i;
  33   int top = lua_gettop(L);
  34
  35   fflush(stdout);
  36   p+=sprintf(p,"STACK(top=%d): ",top);
  37
  38   for (i = 1; i <= top; i++) {  /* repeat for each level */
  39     int t = lua_type(L, i);
  40     switch (t) {
  41
  42     case LUA_TSTRING:  /* strings */
  43       p+=sprintf(p,"`%s'", lua_tostring(L, i));
  44       break;
  45
  46     case LUA_TBOOLEAN:  /* booleans */
  47       p+=sprintf(p,lua_toboolean(L, i) ? "true" : "false");
  48       break;
  49
  50     case LUA_TNUMBER:  /* numbers */
  51       p+=sprintf(p,"%g", lua_tonumber(L, i));
  52       break;
  53
  54     case LUA_TTABLE:
  55       p+=sprintf(p, "Table");
  56       break;
  57
  58     default:  /* other values */
  59       p+=sprintf(p, "???");
  60 /*      if ((ptr = luaL_checkudata(L,i,TASK_MODULE_NAME))) {
  61         p+=sprintf(p,"task");
  62       } else {
  63         p+=printf(p,"%s", lua_typename(L, t));
  64       }*/
  65       break;
  66
  67     }
  68     p+=sprintf(p,"  ");  /* put a separator */
  69   }
  70   INFO2("%s%s",msg,buff);
  71 }
  72
  73 /** @brief ensures that a userdata on the stack is a task and returns the pointer inside the userdata */
  74 static m_task_t checkTask (lua_State *L,int index) {
  75   m_task_t *pi,tk;
  76   luaL_checktype(L,index,LUA_TTABLE);
  77   lua_getfield(L,index,"__simgrid_task");
  78   pi = (m_task_t*)luaL_checkudata(L,-1,TASK_MODULE_NAME);
  79   if(pi == NULL)
  80          luaL_typerror(L,index,TASK_MODULE_NAME);
  81   tk = *pi;
  82   if(!tk)
  83          luaL_error(L,"null Task");
  84   lua_pop(L,1);
  85   return  tk;
  86 }
  87 /* ********************************************************************************* */
  88 /*                           wrapper functions                                       */
  89 /* ********************************************************************************* */
  90
  91 /**
  92  * A task is either something to compute somewhere, or something to exchange between two hosts (or both).
  93  * It is defined by a computing amount and a message size.
  94  *
  95  */
  96
  97 /* *              * *
  98  * * Constructors * *
  99  * *              * */
 100 /**
 101  * Construct an new task with the specified processing amount and amount
 102  * of data needed.
 103  *
 104  * @param name  Task's name
 105  *
 106  * @param computeDuration       A value of the processing amount (in flop) needed to process the task.
 107  *                              If 0, then it cannot be executed with the execute() method.
 108  *                              This value has to be >= 0.
 109  *
 110  * @param messageSize           A value of amount of data (in bytes) needed to transfert this task.
 111  *                              If 0, then it cannot be transfered with the get() and put() methods.
 112  *                              This value has to be >= 0.
 113  */
 114 static int Task_new(lua_State* L) {
 115           const char *name=luaL_checkstring(L,1);
 116           int comp_size = luaL_checkint(L,2);
 117           int msg_size = luaL_checkint(L,3);
 118           m_task_t msg_task = MSG_task_create(name,comp_size,msg_size,NULL);
 119           lua_newtable (L); /* create a table, put the userdata on top of it */
 120           m_task_t *lua_task = (m_task_t*)lua_newuserdata(L,sizeof(m_task_t));
 121           *lua_task = msg_task;
 122           luaL_getmetatable(L,TASK_MODULE_NAME);
 123           lua_setmetatable(L,-2);
 124           lua_setfield (L, -2, "__simgrid_task"); /* put the userdata as field of the table */
 125           /* remove the args from the stack */
 126           lua_remove(L,1);
 127           lua_remove(L,1);
 128           lua_remove(L,1);
 129           return 1;
 130 }
 131
 132 static int Task_get_name(lua_State *L) {
 133   m_task_t tk = checkTask(L,-1);
 134   lua_pushstring(L,MSG_task_get_name(tk));
 135   return 1;
 136 }
 137
 138 static int Task_computation_duration(lua_State *L){
 139   m_task_t tk = checkTask(L,-1);
 140   lua_pushnumber(L,MSG_task_get_compute_duration (tk));
 141   return 1;
 142 }
 143
 144 static int Task_execute(lua_State *L){
 145   m_task_t tk = checkTask(L,-1);
 146   int res = MSG_task_execute(tk);
 147   lua_pushnumber(L,res);
 148   return 1;
 149 }
 150
 151 static int Task_destroy(lua_State *L) {
 152   m_task_t tk = checkTask(L,-1);
 153   int res = MSG_task_destroy(tk);
 154   lua_pushnumber(L,res);
 155   return 1;
 156 }
 157
 158 static int Task_send(lua_State *L)  {
 159   //stackDump("send ",L);
 160   m_task_t tk = checkTask(L,-2);
 161   const char *mailbox = luaL_checkstring(L,-1);
 162   lua_pop(L,1); // remove the string so that the task is on top of it
 163   MSG_task_set_data(tk,L); // Copy my stack into the task, so that the receiver can copy the lua task directly
 164   MSG_error_t res = MSG_task_send(tk,mailbox);
 165   while (MSG_task_get_data(tk)!=NULL) // Don't mess up with my stack: the receiver didn't copy the data yet
 166     MSG_process_sleep(0); // yield
 167
 168   if (res != MSG_OK) switch(res) {
 169     case MSG_TIMEOUT :
 170       ERROR0("MSG_task_send failed : Timeout");
 171       break;
 172     case MSG_TRANSFER_FAILURE :
 173       ERROR0("MSG_task_send failed : Transfer Failure");
 174       break;
 175     case MSG_HOST_FAILURE :
 176       ERROR0("MSG_task_send failed : Host Failure ");
 177       break;
 178     default :
 179       ERROR0("MSG_task_send failed : Unexpected error , please report this bug");
 180       break;
 181     }
 182   return 0;
 183 }
 184
 185 static int Task_recv(lua_State *L)  {
 186   m_task_t tk = NULL;
 187   const char *mailbox = luaL_checkstring(L,-1);
 188   MSG_error_t res = MSG_task_receive(&tk,mailbox);
 189
 190   lua_State *sender_stack = MSG_task_get_data(tk);
 191   lua_xmove(sender_stack,L,1); // copy the data directly from sender's stack
 192   MSG_task_set_data(tk,NULL);
 193
 194   if(res != MSG_OK) switch(res){
 195           case MSG_TIMEOUT :
 196                   ERROR0("MSG_task_receive failed : Timeout");
 197                   break;
 198           case MSG_TRANSFER_FAILURE :
 199                   ERROR0("MSG_task_receive failed : Transfer Failure");
 200                   break;
 201           case MSG_HOST_FAILURE :
 202                   ERROR0("MSG_task_receive failed : Host Failure ");
 203                   break;
 204           default :
 205                   ERROR0("MSG_task_receive failed : Unexpected error , please report this bug");
 206                   break;
 207                   }
 208
 209   return 1;
 210 }
 211
 212 static const luaL_reg Task_methods[] = {
 213     {"new",   Task_new},
 214     {"name",  Task_get_name},
 215     {"computation_duration",  Task_computation_duration},
 216     {"execute", Task_execute},
 217     {"destroy", Task_destroy},
 218     {"send",    Task_send},
 219     {"recv",    Task_recv},
 220     {0,0}
 221 };
 222 static int Task_gc(lua_State *L) {
 223   m_task_t tk=checkTask(L,-1);
 224   if (tk) MSG_task_destroy(tk);
 225   return 0;
 226 }
 227
 228 static int Task_tostring(lua_State *L) {
 229   lua_pushfstring(L, "Task :%p",lua_touserdata(L,1));
 230   return 1;
 231 }
 232
 233 static const luaL_reg Task_meta[] = {
 234     {"__gc",  Task_gc},
 235     {"__tostring",  Task_tostring},
 236     {0,0}
 237 };
 238
 239 /**
 240  * Host
 241  */
 242 static m_host_t checkHost (lua_State *L,int index) {
 243   m_host_t *pi,ht;
 244   luaL_checktype(L,index,LUA_TTABLE);
 245   lua_getfield(L,index,"__simgrid_host");
 246   pi = (m_host_t*)luaL_checkudata(L,-1,HOST_MODULE_NAME);
 247   if(pi == NULL)
 248          luaL_typerror(L,index,HOST_MODULE_NAME);
 249   ht = *pi;
 250   if(!ht)
 251          luaL_error(L,"null Host");
 252   lua_pop(L,1);
 253   return  ht;
 254 }
 255
 256 static int Host_get_by_name(lua_State *L)
 257 {
 258         const char *name=luaL_checkstring(L,1);
 259         DEBUG0("Getting Host from name...");
 260         m_host_t msg_host = MSG_get_host_by_name(name);
 261         if (!msg_host)
 262                 {
 263                 luaL_error(L,"null Host : MSG_get_host_by_name failled");
 264                 }
 265     lua_newtable (L); /* create a table, put the userdata on top of it */
 266         m_host_t *lua_host = (m_host_t*)lua_newuserdata(L,sizeof(m_host_t));
 267         *lua_host = msg_host;
 268         luaL_getmetatable(L,HOST_MODULE_NAME);
 269         lua_setmetatable(L,-2);
 270         lua_setfield (L, -2, "__simgrid_host"); /* put the userdata as field of the table */
 271         /* remove the args from the stack */
 272         lua_remove(L,1);
 273         return 1;
 274 }
 275
 276
 277 static int Host_get_name(lua_State *L) {
 278   m_host_t ht = checkHost(L,-1);
 279   lua_pushstring(L,MSG_host_get_name(ht));
 280   return 1;
 281 }
 282
 283 static int Host_number(lua_State *L) {
 284   lua_pushnumber(L,MSG_get_host_number());
 285   return 1;
 286 }
 287
 288 static int Host_at(lua_State *L)
 289 {
 290         int index = luaL_checkinteger(L,1);
 291         m_host_t host = MSG_get_host_table()[index-1]; // lua indexing start by 1 (lua[1] <=> C[0])
 292         lua_newtable (L); /* create a table, put the userdata on top of it */
 293         m_host_t *lua_host = (m_host_t*)lua_newuserdata(L,sizeof(m_host_t));
 294         *lua_host = host;
 295         luaL_getmetatable(L,HOST_MODULE_NAME);
 296         lua_setmetatable(L,-2);
 297         lua_setfield (L, -2, "__simgrid_host"); /* put the userdata as field of the table */
 298         return 1;
 299
 300 }
 301
 302 /*****************************************************************************************
 303                                                              * BYPASS XML SURF Methods *
 304                                                                  ***************************
 305                                                                  ***************************
 306 ******************************************************************************************/
 307 #include "surf/surfxml_parse.h" /* to override surf_parse and bypass the parser */
 308 #include "surf/surf_private.h"
 309 typedef struct t_host_attr
 310 {
 311         //platform attribute
 312         // Mandatory attributes
 313         const char* id;
 314         double power_peak;
 315         // Optional attributes
 316         double power_scale;
 317         const char *power_trace;
 318         int state_initial;
 319         const char *state_trace;
 320         //deployment attribute
 321         const char* function;
 322         xbt_dynar_t args_list;
 323 }host_attr,*p_host_attr;
 324
 325 typedef struct t_link_attr
 326 {
 327         //mandatory attributes
 328         const char* id;
 329         double bandwidth;
 330         double latency;
 331         // Optional attributes
 332         const char* bandwidth_trace;
 333         const char* latency_trace;
 334         const char*     state_trace;
 335         int state_initial;
 336         int policy;
 337 }link_attr,*p_link_attr;
 338
 339 typedef struct t_route_attr
 340 {
 341         const char *src_id;
 342         const char *dest_id;
 343         xbt_dynar_t links_id;
 344
 345 }route_attr,*p_route_attr;
 346
 347 //using xbt_dynar_t :
 348 static xbt_dynar_t host_list_d ;
 349 static xbt_dynar_t link_list_d ;
 350 static xbt_dynar_t route_list_d ;
 351
 352
 353 /**
 354  * create host resource via CPU model [for MSG]
 355  */
 356
 357 static void create_host(const char* id,double power_peak,double power_sc,
 358                                                 const char* power_tr,int state_init,
 359                                                 const char* state_tr)
 360 {
 361
 362         double power_scale = 1.0;
 363         tmgr_trace_t power_trace = NULL;
 364         e_surf_resource_state_t state_initial;
 365         tmgr_trace_t state_trace;
 366         if(power_sc) // !=0
 367                 power_scale = power_sc;
 368         if (state_init == -1)
 369                 state_initial = SURF_RESOURCE_OFF;
 370         else
 371                 state_initial = SURF_RESOURCE_ON;
 372         if(power_tr)
 373                 power_trace = tmgr_trace_new(power_tr);
 374         else
 375                 power_trace = tmgr_trace_new("");
 376         if(state_tr)
 377                 state_trace = tmgr_trace_new(state_tr);
 378         else
 379                 state_trace = tmgr_trace_new("");
 380         current_property_set = xbt_dict_new();
 381         surf_host_create_resource(xbt_strdup(id), power_peak, power_scale,
 382                                                power_trace, state_initial, state_trace, current_property_set);
 383
 384 }
 385
 386 /**
 387  * create link resource via network model
 388  */
 389 static void create_link(const char *name,
 390         double bw_initial,const char *trace,double lat_initial,
 391         const char* latency_trace,int state_init, const char* state_trace,int policy)
 392 {
 393         tmgr_trace_t bw_trace;
 394         tmgr_trace_t lat_trace;
 395         e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
 396         e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 397         tmgr_trace_t st_trace;
 398         if(trace)
 399                 bw_trace = tmgr_trace_new(trace);
 400         else
 401                 bw_trace = tmgr_trace_new("");
 402
 403         if(latency_trace)
 404                 lat_trace = tmgr_trace_new(latency_trace);
 405         else
 406                 lat_trace = tmgr_trace_new("");
 407
 408         if(state_trace)
 409                 st_trace = tmgr_trace_new(state_trace);
 410         else
 411                 st_trace = tmgr_trace_new("");
 412
 413         if(state_init == -1)
 414                 state_initial_link = SURF_RESOURCE_OFF;
 415         if(policy == -1)
 416                 policy_initial_link = SURF_LINK_FATPIPE;
 417
 418         surf_link_create_resource(xbt_strdup(name), bw_initial, bw_trace,
 419                    lat_initial, lat_trace, state_initial_link, st_trace,
 420                    policy_initial_link, xbt_dict_new());
 421 }
 422
 423
 424 /*
 425  *create host resource via workstation_ptask_L07 model [for SimDag]
 426  */
 427 static void create_host_wsL07(const char* id,double power_peak,double power_sc,
 428                                                 const char* power_tr,int state_init,
 429                                                 const char* state_tr)
 430 {
 431         double power_scale = 1.0;
 432         tmgr_trace_t power_trace = NULL;
 433         e_surf_resource_state_t state_initial;
 434         tmgr_trace_t state_trace;
 435         if(power_sc) // !=0
 436                 power_scale = power_sc;
 437         if (state_init == -1)
 438                 state_initial = SURF_RESOURCE_OFF;
 439         else
 440                 state_initial = SURF_RESOURCE_ON;
 441         if(power_tr)
 442                 power_trace = tmgr_trace_new(power_tr);
 443         else
 444                 power_trace = tmgr_trace_new("");
 445         if(state_tr)
 446                 state_trace = tmgr_trace_new(state_tr);
 447         else
 448                 state_trace = tmgr_trace_new("");
 449         current_property_set = xbt_dict_new();
 450         surf_wsL07_host_create_resource(xbt_strdup(id), power_peak, power_scale,
 451                                                power_trace, state_initial, state_trace, current_property_set);
 452
 453 }
 454
 455 /**
 456  * create link resource via workstation_ptask_L07 model [for SimDag]
 457  */
 458
 459 static void create_link_wsL07(const char *name,
 460         double bw_initial,const char *trace,double lat_initial,
 461         const char* latency_trace,int state_init, const char* state_trace,int policy)
 462 {
 463         tmgr_trace_t bw_trace;
 464         tmgr_trace_t lat_trace;
 465         e_surf_resource_state_t state_initial_link = SURF_RESOURCE_ON;
 466         e_surf_link_sharing_policy_t policy_initial_link = SURF_LINK_SHARED;
 467         tmgr_trace_t st_trace;
 468         if(trace)
 469                 bw_trace = tmgr_trace_new(trace);
 470         else
 471                 bw_trace = tmgr_trace_new("");
 472
 473         if(latency_trace)
 474                 lat_trace = tmgr_trace_new(latency_trace);
 475         else
 476                 lat_trace = tmgr_trace_new("");
 477
 478         if(state_trace)
 479                 st_trace = tmgr_trace_new(state_trace);
 480         else
 481                 st_trace = tmgr_trace_new("");
 482
 483         if(state_init == -1)
 484                 state_initial_link = SURF_RESOURCE_OFF;
 485         if(policy == -1)
 486                 policy_initial_link = SURF_LINK_FATPIPE;
 487
 488         surf_wsL07_link_create_resource(xbt_strdup(name), bw_initial, bw_trace,
 489                    lat_initial, lat_trace, state_initial_link, st_trace,
 490                    policy_initial_link, xbt_dict_new());
 491 }
 492
 493 /*
 494  * add new host to platform hosts list
 495  */
 496 static int Host_new(lua_State *L)
 497 {
 498
 499         if(xbt_dynar_is_empty(host_list_d))
 500                 host_list_d = xbt_dynar_new(sizeof(p_host_attr), &xbt_free_ref);
 501
 502         p_host_attr host;
 503         const char * id;
 504         const char *power_trace;
 505         const char *state_trace;
 506         double power,power_scale;
 507         int state_initial;
 508         //get values from the table passed as argument
 509     if (lua_istable(L,-1)) {
 510
 511             // get Id Value
 512             lua_pushstring(L,"id");
 513             lua_gettable(L, -2 );
 514             id = lua_tostring(L,-1);
 515             lua_pop(L,1);
 516
 517             // get power value
 518             lua_pushstring(L,"power");
 519             lua_gettable(L, -2 );
 520             power = lua_tonumber(L,-1);
 521             lua_pop(L,1);
 522
 523             //get power_scale
 524             lua_pushstring(L,"power_scale");
 525             lua_gettable(L, -2 );
 526             power_scale = lua_tonumber(L,-1);
 527             lua_pop(L,1);
 528
 529             //get power_trace
 530             lua_pushstring(L,"power_trace");
 531             lua_gettable(L, -2 );
 532             power_trace = lua_tostring(L,-1);
 533             lua_pop(L,1);
 534
 535             //get state initial
 536             lua_pushstring(L,"state_initial");
 537             lua_gettable(L, -2 );
 538             state_initial = lua_tonumber(L,-1);
 539             lua_pop(L,1);
 540
 541             //get trace state
 542             lua_pushstring(L,"state_trace");
 543             lua_gettable(L, -2 );
 544             state_trace = lua_tostring(L,-1);
 545             lua_pop(L,1);
 546
 547     } else {
 548             ERROR0("Bad Arguments to create host, Should be a table with named arguments");
 549             return -1;
 550     }
 551
 552             host = malloc(sizeof(host_attr));
 553                 host->id = id;
 554                 host->power_peak = power;
 555                 host->power_scale = power_scale;
 556                 host->power_trace = power_trace;
 557                 host->state_initial = state_initial;
 558                 host->state_trace = state_trace;
 559                 host->function = NULL;
 560                 xbt_dynar_push(host_list_d, &host);
 561
 562     return 0;
 563 }
 564
 565 /**
 566  * add link to platform links list
 567  */
 568 static int Link_new(lua_State *L) // (id,bandwidth,latency)
 569 {
 570         if(xbt_dynar_is_empty(link_list_d))
 571                 link_list_d = xbt_dynar_new(sizeof(p_link_attr), &xbt_free_ref);
 572
 573         const char* id;
 574         double bandwidth,latency;
 575         const char* bandwidth_trace;
 576         const char* latency_trace;
 577         const char* state_trace;
 578         int state_initial,policy;
 579
 580         //get values from the table passed as argument
 581         if (lua_istable(L,-1)) {
 582                     // get Id Value
 583                     lua_pushstring(L,"id");
 584                     lua_gettable(L, -2 );
 585                     id = lua_tostring(L,-1);
 586                     lua_pop(L,1);
 587
 588                     // get bandwidth value
 589                     lua_pushstring(L,"bandwidth");
 590                     lua_gettable(L, -2 );
 591                     bandwidth = lua_tonumber(L,-1);
 592                     lua_pop(L,1);
 593
 594                     //get latency value
 595                     lua_pushstring(L,"latency");
 596                     lua_gettable(L, -2 );
 597                     latency = lua_tonumber(L,-1);
 598                     lua_pop(L,1);
 599
 600                     /*Optional Arguments  */
 601
 602                     //get bandwidth_trace value
 603                     lua_pushstring(L,"bandwidth_trace");
 604                     lua_gettable(L, -2 );
 605                     bandwidth_trace = lua_tostring(L,-1);
 606                     lua_pop(L,1);
 607
 608                     //get latency_trace value
 609                     lua_pushstring(L,"latency_trace");
 610                     lua_gettable(L, -2 );
 611                     latency_trace = lua_tostring(L,-1);
 612                     lua_pop(L,1);
 613
 614                     //get state_trace value
 615                     lua_pushstring(L,"state_trace");
 616                     lua_gettable(L, -2 );
 617                     state_trace = lua_tostring(L,-1);
 618                     lua_pop(L,1);
 619
 620                                 //get state_initial value
 621                     lua_pushstring(L,"state_initial");
 622                     lua_gettable(L, -2 );
 623                     state_initial = lua_tonumber(L,-1);
 624                     lua_pop(L,1);
 625
 626
 627                                 //get policy value
 628                     lua_pushstring(L,"policy");
 629                     lua_gettable(L, -2 );
 630                     policy = lua_tonumber(L,-1);
 631                     lua_pop(L,1);
 632
 633             } else {
 634                     ERROR0("Bad Arguments to create link, Should be a table with named arguments");
 635                     return -1;
 636             }
 637
 638         p_link_attr link = malloc(sizeof(link_attr));
 639         link->id = id;
 640         link->bandwidth = bandwidth;
 641         link->latency = latency;
 642         link->bandwidth_trace = bandwidth_trace;
 643         link->latency_trace = latency_trace;
 644         link->state_trace = state_trace;
 645         link->state_initial= state_initial;
 646         link->policy = policy;
 647         xbt_dynar_push(link_list_d,&link);
 648         return 0;
 649 }
 650
 651 /**
 652  * add route to platform routes list
 653  */
 654 static int Route_new(lua_State *L) // (src_id,dest_id,links_number,link_table)
 655 {
 656         if(xbt_dynar_is_empty(route_list_d))
 657                 route_list_d = xbt_dynar_new(sizeof(p_route_attr), &xbt_free_ref);
 658         const char * link_id;
 659         p_route_attr route = malloc(sizeof(route_attr));
 660         route->src_id = luaL_checkstring(L,1);
 661         route->dest_id = luaL_checkstring(L,2);
 662         route->links_id = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 663         lua_pushnil(L);
 664         while (lua_next(L,3) != 0) {
 665                 link_id = lua_tostring(L, -1);
 666                 xbt_dynar_push(route->links_id, &link_id);
 667             DEBUG2("index = %f , Link_id = %s \n",lua_tonumber(L, -2),lua_tostring(L, -1));
 668             lua_pop(L, 1);
 669         }
 670         lua_pop(L, 1);
 671
 672         //add route to platform's route list
 673         xbt_dynar_push(route_list_d,&route);
 674         return 0;
 675 }
 676
 677 /**
 678  * set function to process
 679  */
 680 static int Host_set_function(lua_State *L) //(host,function,nb_args,list_args)
 681 {
 682         // look for the index of host in host_list
 683         const char *host_id = luaL_checkstring(L,1);
 684         const char* argument;
 685         unsigned int i;
 686         p_host_attr p_host;
 687
 688         xbt_dynar_foreach(host_list_d,i,p_host)
 689         {
 690                 if(p_host->id == host_id)
 691                 {
 692                         p_host->function = luaL_checkstring(L,2);
 693                         if(lua_istable(L,3))
 694                         {
 695                                 p_host->args_list = xbt_dynar_new(sizeof(char *), &xbt_free_ref);
 696                                 // fill the args list
 697                                 lua_pushnil(L);
 698                                 int j = 0;
 699                                 while (lua_next(L,3) != 0) {
 700                                                 argument = lua_tostring(L, -1);
 701                                                 xbt_dynar_push(p_host->args_list, &argument);
 702                                                 DEBUG2("index = %f , Arg_id = %s \n",lua_tonumber(L, -2),lua_tostring(L, -1));
 703                                                 j++;
 704                                                 lua_pop(L, 1);
 705                                         }
 706                         }
 707                         lua_pop(L, 1);
 708                         return 0;
 709                 }
 710         }
 711         ERROR1("Host : %s Not Fount !!",host_id);
 712         return 1;
 713 }
 714
 715 /*
 716  * surf parse bypass platform
 717  * through CPU/network Models
 718  */
 719
 720 static int surf_parse_bypass_platform()
 721 {
 722         unsigned int i;
 723         p_host_attr p_host;
 724         p_link_attr p_link;
 725         p_route_attr p_route;
 726
 727         // Add Hosts
 728         xbt_dynar_foreach(host_list_d,i,p_host)
 729         {
 730                 create_host(p_host->id,p_host->power_peak,p_host->power_scale,p_host->power_trace,
 731                                         p_host->state_initial,p_host->state_trace);
 732                 //add to routing model host list
 733                 surf_route_add_host((char*)p_host->id);
 734         }
 735
 736         //add Links
 737         xbt_dynar_foreach(link_list_d,i,p_link)
 738         {
 739                 create_link(p_link->id,p_link->bandwidth,p_link->bandwidth_trace,p_link->latency,
 740                                 p_link->latency_trace,p_link->state_initial,p_link->state_trace,p_link->policy);
 741         }
 742         // add route
 743         xbt_dynar_foreach(route_list_d,i,p_route)
 744         {
 745                 surf_route_set_resource((char*)p_route->src_id,(char*)p_route->dest_id,p_route->links_id,0);
 746         }
 747         /* </platform> */
 748
 749         surf_add_host_traces();
 750         surf_set_routes();
 751         surf_add_link_traces();
 752
 753         return 0; // must return 0 ?!!
 754
 755 }
 756
 757 /**
 758  *
 759  * surf parse bypass platform
 760  * through workstation_ptask_L07 Model
 761  */
 762
 763
 764 static int surf_wsL07_parse_bypass_platform()
 765 {
 766         unsigned int i;
 767         p_host_attr p_host;
 768         p_link_attr p_link;
 769         p_route_attr p_route;
 770
 771         // Add Hosts
 772         xbt_dynar_foreach(host_list_d,i,p_host)
 773         {
 774                 create_host_wsL07(p_host->id,p_host->power_peak,p_host->power_scale,p_host->power_trace,
 775                                         p_host->state_initial,p_host->state_trace);
 776                 //add to routing model host list
 777                 surf_route_add_host((char*)p_host->id);
 778         }
 779
 780         //add Links
 781         xbt_dynar_foreach(link_list_d,i,p_link)
 782         {
 783                 create_link_wsL07(p_link->id,p_link->bandwidth,p_link->bandwidth_trace,p_link->latency,
 784                                                 p_link->latency_trace,p_link->state_initial,p_link->state_trace,p_link->policy);
 785         }
 786         // add route
 787         xbt_dynar_foreach(route_list_d,i,p_route)
 788         {
 789                 surf_route_set_resource((char*)p_route->src_id,(char*)p_route->dest_id,p_route->links_id,0);
 790         }
 791         /* </platform> */
 792
 793         surf_wsL07_add_traces();
 794         surf_set_routes();
 795
 796         return 0;
 797
 798 }
 799 /*
 800  * surf parse bypass application for MSG Module
 801  */
 802 static int surf_parse_bypass_application()
 803 {
 804           unsigned int i;
 805           p_host_attr p_host;
 806           xbt_dynar_foreach(host_list_d,i,p_host)
 807                   {
 808                   if(p_host->function)
 809                           MSG_set_function(p_host->id,p_host->function,p_host->args_list);
 810                   }
 811           return 0;
 812 }
 813
 814
 815 /**
 816  *  Generate Gras Templates File from lua
 817  */
 818
 819 xbt_dict_t process_function_set;
 820 xbt_dynar_t process_list;
 821 xbt_dict_t machine_set;
 822 static s_process_t process;
 823
 824 void s_process_free(void *process)
 825 {
 826   s_process_t *p = (s_process_t *) process;
 827   int i;
 828   for (i = 0; i < p->argc; i++)
 829     free(p->argv[i]);
 830   free(p->argv);
 831   free(p->host);
 832 }
 833
 834 static int gras_add_process_function(lua_State *L)
 835 {
 836         const char * arg;
 837         const char* process_host = luaL_checkstring(L,1);
 838         const char *process_function = luaL_checkstring(L,2);
 839
 840         if(xbt_dict_is_empty(machine_set) || xbt_dict_is_empty(process_function_set)
 841                         || xbt_dynar_is_empty(process_list))
 842                 {
 843                   process_function_set = xbt_dict_new();
 844                   process_list = xbt_dynar_new(sizeof(s_process_t), s_process_free);
 845                   machine_set = xbt_dict_new();
 846                 }
 847
 848         xbt_dict_set(machine_set,process_host, NULL, NULL);
 849         xbt_dict_set(process_function_set,process_function, NULL, NULL);
 850
 851         process.argc = 1;
 852         process.argv = xbt_new(char *, 1);
 853         process.argv[0] = xbt_strdup(process_function);
 854         process.host = strdup(process_host);
 855
 856         lua_pushnil(L);
 857         while (lua_next(L,3) != 0) {
 858                 arg = lua_tostring(L, -1);
 859                 process.argc++;
 860                 process.argv = xbt_realloc(process.argv, (process.argc) * sizeof(char *));
 861                 process.argv[(process.argc) - 1] = xbt_strdup(arg);
 862
 863                 DEBUG2("index = %f , arg = %s \n",lua_tonumber(L, -2),lua_tostring(L, -1));
 864                 lua_pop(L, 1);
 865                 }
 866         lua_pop(L, 1);
 867         //add to the process list
 868         xbt_dynar_push(process_list, &process);
 869
 870         return 0;
 871
 872 }
 873
 874
 875 static int gras_generate(lua_State *L)
 876 {
 877   const char *project_name = luaL_checkstring(L,1);
 878   generate_sim(project_name);
 879   generate_rl(project_name);
 880   generate_makefile_local(project_name);
 881
 882   return 0;
 883 }
 884
 885 //***********Register Methods *******************************************//
 886 /*
 887  * Host Methods
 888  */
 889 static const luaL_reg Host_methods[] = {
 890     {"getByName",   Host_get_by_name},
 891     {"name",            Host_get_name},
 892     {"number",          Host_number},
 893     {"at",                      Host_at},
 894     // Bypass XML Methods
 895     {"new",                     Host_new},
 896     {"setFunction",     Host_set_function},
 897     {0,0}
 898 };
 899
 900 static int Host_gc(lua_State *L)
 901 {
 902   m_host_t ht = checkHost(L,-1);
 903   if (ht) ht = NULL;
 904   return 0;
 905 }
 906
 907 static int Host_tostring(lua_State *L)
 908 {
 909   lua_pushfstring(L,"Host :%p",lua_touserdata(L,1));
 910   return 1;
 911 }
 912
 913 static const luaL_reg Host_meta[] = {
 914     {"__gc",  Host_gc},
 915     {"__tostring",  Host_tostring},
 916     {0,0}
 917 };
 918
 919 /*
 920  * Link Methods
 921  */
 922 static const luaL_reg Link_methods[] = {
 923     {"new",Link_new},
 924     {0,0}
 925 };
 926 /*
 927  * Route Methods
 928  */
 929 static const luaL_reg Route_methods[] ={
 930    {"new",Route_new},
 931    {0,0}
 932 };
 933
 934 /*
 935  * Environment related
 936  */
 937
 938 extern lua_State *simgrid_lua_state;
 939
 940 static int run_lua_code(int argc,char **argv) {
 941   DEBUG1("Run lua code %s",argv[0]);
 942   lua_State *L = lua_newthread(simgrid_lua_state);
 943   int ref = luaL_ref(simgrid_lua_state, LUA_REGISTRYINDEX); // protect the thread from being garbage collected
 944   int res = 1;
 945
 946   /* Start the co-routine */
 947   lua_getglobal(L,argv[0]);
 948   xbt_assert1(lua_isfunction(L,-1),
 949       "The lua function %s does not seem to exist",argv[0]);
 950
 951   // push arguments onto the stack
 952   int i;
 953   for(i=1;i<argc;i++)
 954     lua_pushstring(L,argv[i]);
 955
 956   // Call the function (in resume)
 957   xbt_assert2(lua_pcall(L, argc-1, 1, 0) == 0,
 958     "error running function `%s': %s",argv[0], lua_tostring(L, -1));
 959
 960   /* retrieve result */
 961   if (lua_isnumber(L, -1)) {
 962     res = lua_tonumber(L, -1);
 963     lua_pop(L, 1);  /* pop returned value */
 964   }
 965   // cleanups
 966   luaL_unref(simgrid_lua_state,LUA_REGISTRYINDEX,ref );
 967   DEBUG1("Execution of lua code %s is over", (argv ? argv[0] : "(null)"));
 968   return res;
 969 }
 970 static int launch_application(lua_State *L) {
 971   const char * file = luaL_checkstring(L,1);
 972   MSG_function_register_default(run_lua_code);
 973   MSG_launch_application(file);
 974   return 0;
 975 }
 976 #include "simix/simix.h" //FIXME: KILLME when debugging on simix internals become useless
 977 static int create_environment(lua_State *L) {
 978   const char *file = luaL_checkstring(L,1);
 979   DEBUG1("Loading environment file %s",file);
 980   MSG_create_environment(file);
 981   smx_host_t *hosts = SIMIX_host_get_table();
 982   int i;
 983   for (i=0;i<SIMIX_host_get_number();i++) {
 984     DEBUG1("We have an host %s", SIMIX_host_get_name(hosts[i]));
 985   }
 986
 987   return 0;
 988 }
 989
 990 static int debug(lua_State *L) {
 991   const char *str = luaL_checkstring(L,1);
 992   DEBUG1("%s",str);
 993   return 0;
 994 }
 995 static int info(lua_State *L) {
 996   const char *str = luaL_checkstring(L,1);
 997   INFO1("%s",str);
 998   return 0;
 999 }
1000 static int run(lua_State *L) {
1001   MSG_main();
1002   return 0;
1003 }
1004 static int clean(lua_State *L) {
1005   MSG_clean();
1006   return 0;
1007 }
1008
1009 /*
1010  * Bypass XML Parser
1011  */
1012
1013 /*
1014  * Register platform for MSG
1015  */
1016 static int msg_register_platform(lua_State *L)
1017 {
1018         /* Tell Simgrid we dont wanna use its parser*/
1019         surf_parse = surf_parse_bypass_platform;
1020         MSG_create_environment(NULL);
1021         return 0;
1022 }
1023
1024 /*
1025  * Register platform for Simdag
1026  */
1027
1028 static int sd_register_platform(lua_State *L)
1029 {
1030         surf_parse = surf_wsL07_parse_bypass_platform;
1031         SD_create_environment(NULL);
1032         return 0;
1033 }
1034 /*
1035  * Register platform for gras
1036  */
1037 static int gras_register_platform(lua_State *L)
1038 {
1039         /* Tell Simgrid we dont wanna use surf parser*/
1040         surf_parse = surf_parse_bypass_platform;
1041         gras_create_environment(NULL);
1042         return 0;
1043 }
1044
1045 /**
1046  * Register applicaiton for MSG
1047  */
1048 static int msg_register_application(lua_State *L)
1049 {
1050          MSG_function_register_default(run_lua_code);
1051          surf_parse = surf_parse_bypass_application;
1052          MSG_launch_application(NULL);
1053          return 0;
1054 }
1055
1056 /*
1057  * Register application for gras
1058  */
1059 static int gras_register_application(lua_State *L)
1060 {
1061         gras_function_register_default(run_lua_code);
1062         surf_parse = surf_parse_bypass_application;
1063         gras_launch_application(NULL);
1064         return 0;
1065 }
1066 static const luaL_Reg simgrid_funcs[] = {
1067     { "create_environment", create_environment},
1068     { "launch_application", launch_application},
1069     { "debug", debug},
1070     { "info", info},
1071     { "run", run},
1072     { "clean", clean},
1073     /* short names */
1074     { "platform", create_environment},
1075     { "application", launch_application},
1076     /* methods to bypass XML parser*/
1077     { "msg_register_platform",msg_register_platform},
1078     { "sd_register_platform",sd_register_platform},
1079     { "msg_register_application",msg_register_application},
1080     { "gras_register_platform",gras_register_platform},
1081     { "gras_register_application",gras_register_application},
1082     /* gras sub generator method*/
1083     {"gras_set_process_function",gras_add_process_function},
1084     {"gras_generate",gras_generate},
1085     { NULL, NULL }
1086 };
1087
1088 /* ********************************************************************************* */
1089 /*                       module management functions                                 */
1090 /* ********************************************************************************* */
1091
1092 extern const char*xbt_ctx_factory_to_use; /*Hack: let msg load directly the right factory */
1093
1094 #define LUA_MAX_ARGS_COUNT 10 /* maximum amount of arguments we can get from lua on command line */
1095 #define TEST
1096 int luaopen_simgrid(lua_State* L); // Fuck gcc: we don't need that prototype
1097 int luaopen_simgrid(lua_State* L) {
1098
1099   //xbt_ctx_factory_to_use = "lua";
1100   char **argv=malloc(sizeof(char*)*LUA_MAX_ARGS_COUNT);
1101   int argc=1;
1102   argv[0] = (char*)"/usr/bin/lua"; /* Lie on the argv[0] so that the stack dumping facilities find the right binary. FIXME: what if lua is not in that location? */
1103   /* Get the command line arguments from the lua interpreter */
1104   lua_getglobal(L,"arg");
1105   /* if arg is a null value, it means we use lua only as a script to init platform
1106    * else it should be a table and then take arg in consideration
1107    */
1108   if(lua_istable(L,-1))
1109   {
1110           int done=0;
1111           while (!done) {
1112                 argc++;
1113                 lua_pushinteger(L,argc-2);
1114                 lua_gettable(L,-2);
1115                 if (lua_isnil(L,-1)) {
1116                   done = 1;
1117                 } else {
1118                   xbt_assert1(lua_isstring(L,-1),"argv[%d] got from lua is no string",argc-1);
1119                   xbt_assert2(argc<LUA_MAX_ARGS_COUNT,
1120                            "Too many arguments, please increase LUA_MAX_ARGS_COUNT in %s before recompiling SimGrid if you insist on having more than %d args on command line",
1121                            __FILE__,LUA_MAX_ARGS_COUNT-1);
1122                   argv[argc-1] = (char*)luaL_checkstring(L,-1);
1123                   lua_pop(L,1);
1124                   DEBUG1("Got command line argument %s from lua",argv[argc-1]);
1125                 }
1126           }
1127           argv[argc--]=NULL;
1128
1129           /* Initialize the MSG core */
1130           MSG_global_init(&argc,argv);
1131           DEBUG1("Still %d arguments on command line",argc); // FIXME: update the lua's arg table to reflect the changes from SimGrid
1132  }
1133   /* register the core C functions to lua */
1134   luaL_register(L, "simgrid", simgrid_funcs);
1135   /* register the task methods to lua */
1136   luaL_openlib(L,TASK_MODULE_NAME,Task_methods,0); //create methods table,add it to the globals
1137   luaL_newmetatable(L,TASK_MODULE_NAME); //create metatable for Task,add it to the Lua registry
1138   luaL_openlib(L,0,Task_meta,0);// fill metatable
1139   lua_pushliteral(L,"__index");
1140   lua_pushvalue(L,-3);  //dup methods table
1141   lua_rawset(L,-3); //matatable.__index = methods
1142   lua_pushliteral(L,"__metatable");
1143   lua_pushvalue(L,-3);  //dup methods table
1144   lua_rawset(L,-3); //hide metatable:metatable.__metatable = methods
1145   lua_pop(L,1);   //drop metatable
1146
1147   /* register the hosts methods to lua*/
1148   luaL_openlib(L,HOST_MODULE_NAME,Host_methods,0);
1149   luaL_newmetatable(L,HOST_MODULE_NAME);
1150   luaL_openlib(L,0,Host_meta,0);
1151   lua_pushliteral(L,"__index");
1152   lua_pushvalue(L,-3);
1153   lua_rawset(L,-3);
1154   lua_pushliteral(L,"__metatable");
1155   lua_pushvalue(L,-3);
1156   lua_rawset(L,-3);
1157   lua_pop(L,1);
1158
1159   /* register the links methods to lua*/
1160   luaL_openlib(L,LINK_MODULE_NAME,Link_methods,0);
1161   luaL_newmetatable(L,LINK_MODULE_NAME);
1162   lua_pop(L,1);
1163
1164   /*register the routes methods to lua*/
1165   luaL_openlib(L,ROUTE_MODULE_NAME,Route_methods,0);
1166   luaL_newmetatable(L,LINK_MODULE_NAME);
1167   lua_pop(L,1);
1168
1169   /* Keep the context mechanism informed of our lua world today */
1170   simgrid_lua_state = L;
1171   return 1;
1172 }